crew drill, light tank m5 series
TRANSCRIPT
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mEPARTMENT FIELD MANUAL
ARMORED
CREW DRILL,
LIGHT TANK M5 SERIES^__^> / &.-^s 9 ^~ 2- REFEREfNCE USE
ONLY
NOTTO BE TAKEN FROM LIBRARY
WAR DEPARTMENT • 24 MAY 1944 UNCLASSIFIED
PM 17-68 C l
FIELD MANUAL
ARMORED
CREW DRILL, LIGHT TANK M5 SERIES
CHANGES 1 WAR DEPARTMENT, No. 1 J WASHINGTON, 4 December 1944.
FM 17-68, 24 May 1944, is changed as follows: 5. OPERATION OF INTERPHONE AND RADIO.- *-- * * * *a. MS light tank.*****
(2) The tank commander depresses the switch on his microphone cord, and orders: CHECK INTER PHONE. NOTE: This command is * * * the interphone check.*****
(3) The gunner, bow gunner, and driver, in turn, throw their radio-interphone switches to INTER PHONE, depress their microphone switches, and re port: "Gunner check," "Bog check," "Driver check." "Upon completion of their reports, they immediately return their switches to RADIO. During this procedure, * * * the switch button.*****
(5) (Superseded). The RADIO-INT switches on all control boxes, except the tank commander's, must be set on RADIO. This is the normal position for inter phone operation. The tank commander's switch will be set at INT most of the time; he will change it to RADIO only as he desires radio communication.
AGO 154P 610604 44
FIELD MANUAL
Except in an emergency, no one but the tank commandsr may operate the RADIO-INT switch on his control box. In an emergency, a member of the tank crew may communicate with the tank commander or an other crew member by throwing his control box switch to INT; but this action will interrupt the tank com mander's radio reception. It is the duty of the tank commander to monitor his radio receiver at all times except when speaking over the interphone or trans mitting over the radio. He can monitor both the inter phone and the radio receiver with his switch set at the INT position.
AGO 154D
£ 35
. B
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OR
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."
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tank
fo
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tank
w
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light
s,
and
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ths.
si
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nnec
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ck
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ts
and
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ecto
rs;
wat
ch
acti
on
and
chec
k co
n di
tion
of
su
ppor
t ro
ll er
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shoe
s,
and
tank
susp
ensi
on
as
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m
oves
to
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.
1
Gu
nn
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Oil
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and
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Tur
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.C
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Wal
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ide
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ve
tank
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war
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tank l
engt
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ve
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.
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tow
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pass
to
Dri
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elp
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ver c
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ligh
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ck m
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un t
ri
pod
case
fo
r pi
ntle
an
d el
evat
ing
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h an
ism
.In
stal
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dio
ante
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epla
ce t
arpa
ulin
on
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ck d
rivi
ng a
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lack
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.
j£
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unne
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nt t
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onnect
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man
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EP
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in
terp
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ck).
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eive
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ow
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chin
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n cl
eani
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ck t
hat
Dri
ver'
s an
d B
og's
ha
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s ar
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osed
.C
heck
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anua
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eva
tion
, op
erat
ion
of
hand
and
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er t
rav
er
se,
and
turr
et l
ock.
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ck
reco
il
cyli
nder
oi
l.C
onnec
t bre
ak-a
way
pl
ugs.
Rep
ort
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ner
read
}'."
Rec
eive
and
sto
w r
am
mer
sta
ff.
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e m
ount
ed
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e ha
tch.
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lose
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ch.
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ugs.
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ak-a
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t b
reak
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aypl
ugs.
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ort
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rea
dy."
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ort
"Dri
ver
read
y."
NO
TE
: In
lat
er m
odel
s of
the
Lig
ht T
ank
M5A
1, t
here
is
an e
mer
genc
y ig
niti
on s
witc
h on
the
rig
ht
side
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the
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roo
f.
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s sw
itch
is
left
in
the
ON
pos
itio
n ex
cept
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emer
genc
ies,
whe
n it
isi u
sed
by th
e T
ank
Com
man
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or o
ther
per
sonn
el w
ithi
n re
ach.
o » I D E a 00 H a
FIELD MANUAL
40. RADIO.* * * * *
g. Tubes (Superseded.) Turn in defective tubes at the earliest opportunity.
* * * * *[AQ 300.7 (31 Oct44).]
BY ORDER OF THE SECRETARY OF WAR:
OFFICIAL: G. C. MAESHALL J. A. ULIO Chief of Staff Major General The Adjutant General
DISTRIBUTION:AAF(IO); AGF (10); ASF (10); T of Opns (5); Arm
& Sv Bd (2); Def C (5); Tech Sv (2); SvC (10); HD (5); PC&S (1); Gen & Sp Sv Sch (50) except Armd Sch (500); USMA (2); ROTC (1); A (10); CHQ (10); D (2) except D 2, 7, 17 (10); R 2, 17 (10); SBn 2, 17 (10); Bn 2, 17 (5); AF (2).
T/O &E: 17-2 (5); 17-17 (20); 17-20-1 (5).For explanation of symbols, see FM 21-6.
AGO 154D
WAR DEPARTMENT FIELD MANUAL
F M 17-68
This manual supersedes FM 17-68, 8 June 1943
ARMORED
CREW DRILL
LIGHT TANK M5 SERIES
WAR DEPARTMENT - 24 MAY 1944
____. DISSEMINATION OF RESTRICTED MATTER.+tbt Infor
mation contained in restricted documents and the essential characteristics
of restricted material may be given to any person known to be in the
service of the United States and to persons of undoubted loyalty and
discretion who are cooperating in Government work, but will not be
communicated to the public or to the press except by authorized military
public relations agencies. (See also par. S3o, AR 380-5,15 Mar 1944.)
United States Government Printing Office
Washington 1944
WAR DEPARTMENT, WASHINGTON 25, D. C., 24 May 1944.
FM 17-68, Armored Field Manual, Crew Drill, Light Tank M5 Series, is published for the information and guidance of all concerned.
CA. G. 300.7 (24 May 44). I]
BY OBDER OF THE SECRETARY OF WAR:
G. C. MARSHALL,Chief of Staff.
OFFICIAL:J. A. ULIO,
Major General.The Adjutant General.
DISTRIBUTION:As prescribed in paragraph 9a, FM 21-6, exceptArmd Sch (500); D 2, 7, 17 (10); R, 17 (10);Bn 2, 17 (5); 1C 17 (5), (20).1C 17: T/O & E, Hq Co, Armd Div; 17-20-1, Hqand Hq Co, Combat Comd, Armd Div (5);17-17, Light Tk Co, Tank Bn and Light TankCo, Cav Mecz Sq (20).(For explanation of symbols, see FM 21-6.)
TABLE OF CONTENTS
Paragraph Page
Section I. General ________ 1—2 1II. Crew Composition and
Formation _____ 3—4 4III. Crew Control ____ 5-6 6IV. Crew Drill ______ 7-12 10V. Service of the Piece __ 13-18 19
VI. Mounted Action __ 19-23 31VII. Dismounted Action __ 24-29 37
VIII. Evacuation of Casual ties from Tanks _ 30-33 46
I.. Inspections andMaintenance ___ 34—40 51
X. Sight Adjustment __ 41—42 68XI. Destruction of
Materiel and Equipment ____ 43—50 71
RESTRICTED
FM 17-68
WAR DEPARTMENT FIELD MANUAL
CREW DRILL LIGHT TANK M5 SERIES*
This manual supersedes FM 17-68, 8 June 1943.
Section I
GENERAL
1. PURPOSE AND SCOPE. This manual is designed to present instructional material for the platoon leader and tank commander in training members of the crew of the light tanks MS and M5A1 for combat. It is to be used as a guide to achieve orderly, disciplined, efficient exe cution of mounted and dismounted action, and pre cision, accuracy, and speed in service of the piece. It provides a logical and thorough routine for all inspec tions of the vehicle and its equipment.
2. REFERENCES. See appendix.
0 "For definition of military terms not defined in this manual see TM oft_9.nv20-205
Figure 1. Light tank M5A1, front and rear views.
Fig
ure
2.
Lig
ht
tank
M
5A1.
Section II
COMPOSITION AND FORMATIONS
3. COMPOSITION. The light tank crew is composed offour members:
Tank commander (loader or as sistant gunner and tends voice radio) _______________ LIEUTENANT
or SERGEANTGunner ________________ GUNNER Bow Gunner (assistant driver, and radio operator in tanks equipped with SCR-506) _________ BOG Driver _________________ DRIVER
Figure 3. Dismounted posts, light tank crew.
4. FORMATIONS, a. Dismounted posts. The crew forms at attention in one rank. (See figure 3). The tank com mander takes his post 2 yards in front of the right track, facing the front. The bow gunner, gunner and driver in order, take positions at the left of the tank commander at close interval.
b. Mounted posts. The crew forms mounted as follows:(1) Tank commander. In the turret, standing on the
floor, sitting or standing on the seat.(2) Bow gunner. In the bow gunner's seat.(3) Gunner. In the turret, seated at the left of the
37-mm gun with his left hand on the power traverse con trol handle, his right hand on the elevating handwheel, and his head against the headrest of the periscope.
(4) Driver. In the driver's seat.
Section III
CREW CONTROL
5. OPERATION OF INTERPHONE AND RADIO. Thecrew must practice continually with the interphone to attain its maximum value during combat. It is available for use at any time during the operation of the tank, but its use interrupts radio communication. Due to the dif ferences in location of the radio and interphone facilities of the light tank M5 and M5A1, slightly different pro cedures are necessary in crew control. For tank signals see FM 17-5.
a. M5 light tank. As standing operating procedure, af ter mounting, the radio is turned on by either the driver or gunner without command, and the headsets and microphones are tested. See Preliminary Inspection for Radio Sets SCR-508, SCR-528, and SCR-538.
(1) Each crew member (except the gunner who .has no. interphone connection) inserts the plugs of the short cords extending from his headset into the break-away plug of the headset extension cord of his interphone con trol box. The microphone (of either type, throat or lip) is adjusted in place to produce maximum clarity, and con nected to the break-away plug on the microphone cord of the control box. !
(2) The tank commander turm> lik-RADie^ft^ER- PHQNE swildtuta-IKIEBEiiQNE, depresses the switch on his microphone cord, and orders: CHECK INTER PHONE. NOTE: This command is used when the crew mounts by any other method than the formalized drills given in paragraphs 8 and 25. In those drills the "Ready" report constitutes the interphone check.
(3) The bow gunner and driver, in turn, depress their microphone switches and report: BOG CHECK, DRIVER CHECK] During this procedure, each adjusts
6
the volume control on his interphone control box to the desired level. Care is taken that the microphone switch does not remain in locked position thus burning out the dynamotor. In stowing, check to see that the suspension strap is not wrapped around the hand switch, pressing down the switch button.
(4) Interphone control box positions are located as fol lows:
(a) Driver. On wall of hull to his left.(b) Bow gunner. On wall of hull to his right.(c) Tank commander. On rear of turret roof between
the hatches. He controls his transmission by manipu lating the switch on the control box marked RADIO- INTERPHONE to the type of transmission desired.
(5")XQie RADIO-INTERPHONE switches on the trans mitter a^d on all control boxes, except the tank com mander's control box, are set on RADIO. This is the normal position for interphone operation. The tank com mander's switch is set on RADIO most of the time, he will change it to INTERPHONE only as he desires to communicate with his crew. Except in an emergency, no one but the tank commander may operate the inter phone switch on his control box. In an emergency, a member of the tank crew may break in while the tank commander is on RADIO by turning his control box switch to INTERPHONE. When the tank commander is on RADIO, turning any RADIO-INTERPHONE switch to INTERPHONE will interrupt the commander's radio communication and establish interphone communication.
(6) It is the duty of each man to check his personal in terphone equipment upon mounting the tank, see that it is properly maintained, and report any difficulties to the tank commander. Definite tank control commands and terminology are set forth in the following paragraph. The desirability and necessity of adhering to this specific language cannot be overemphasized. General conversa tion on interphones causes misunderstanding and disor der and is harmful to discipline.
b. M5A1 light tank. In this and later models, the radio is located in the turret bulge, immediately accessible to the tank commander. The gunner's interphone control box is on the roof of the turret in front of him. The tank commander's control box is on the right side of the tur ret. On mounting the M5A1 tank, the crew follows the same procedure as that prescribed for the M5 model with the following exceptions: the tank commander turns on the receiver, transmitter or amplifier, and sets the channel number button. Upon the command CHECK INTERPHONE, the gunner reports first, followed in or der by the bow gunner and driver.
NOTE: In tanks equipped with SCR-506, two mem bers of the crew (Bog and gunner) are qualified radio operators. The principal duty of the Bog is to operate this set, and interphone procedure is modified as re quired to enable him to perform his duties.
6. INTERPHONE LANGUAGE, a. Terms.Tank Commander __LIEUTENANT or SERGEANTDriver __________DRIVERGunner _________GUNNERBow Gunner ______BOGAny tank ________TANKArmored car ______ARMORED CARAny unarmored vehicle_TRUCKInfantry ________DOUGHSMachine gun ______MACHINE GUNAirplane ________PLANE
b. Commands for movement of tank. To move the tank
forward _______DRIVER MOVE OUT To halt the tank ___DRIVER STOP To reverse the tank _DRIVER REVERSE To decrease speed __DRIVER SLOW DOWN To turn right 90° ___DRIVER CLOCK 3 —
STEADY-Y-Y-Y ... ONTo turn left 60° ___DRIVER CLOCK 10—
STEADY-Y-Y-Y ... ON
8
To turn right (left) 180° _________DRIVER CLOCK 6 RIGHT
(LEFT)—STEADY-Y-Y-Y... ON
To have driver move to ward a terrain feature or reference point. The tank being headed in proper direction ___DRIVER MARCH ON WHITE
HOUSE (HILL, DEAD TREE,ETC.)
To follow in column __DRIVER FOLLOW THATTANK (DRIVER FOLLOWTANK NO B-9)
To follow on road or trail _________DRIVER RIGHT ON ROAD
(DRIVER RIGHT ON TRAIL) To start engines ___DRIVER CRANK UP To stop the engine _DRIVER CUT ENGINE To proceed at same
speed ________DRIVER STEADYc. Comands for control of turret.
To traverse the turret -GUNNER TRAVERSE LEFT(RIGHT)
To stop turret traverse _GUNNER STEADY-Y-Y-Y... ON
d. Fire orders. See FM 17-12 .
Section IV
CREW DRILL
7. DISMOUNTED DRILL, a. To form light tank crew.Being dismounted, the crew takes dismounted posts (figure 3) at the command FALL IN.
b. To break ranks. At the command FALL OUT, the crew breaks ranks. Crew members habitually fall out to the right of the tank.
c. To call off. At the command CALL OFF, the mem bers of the crew call off in turn as follows:
(1) Tank Commander ____ "SERGEANT" (or"LIEUTENANT")
(2) Bow Gunner _______ "BOG"(3) Gunner ___________ "GUNNER"(4) Driver ___.______ "DRIVER" d. To change designations and duties. (1) At the com
mand FALL OUT SERGEANT (BOG) (GUNNER) -(a) The man designated to fall out moves by the rear
to the left flank position and becomes driver.(b) The crew members on the left of the vacated
post move smartly to the right one position, ready to call off their new designations.
(c) The acting tank commander starts calling off as soon as the crew is re-formed in line.
(2) The movement is executed by having any member of the crew fall out except the driver.
(3) All movements are executed with snap and pre cision and at double time.
10
8. T
O M
OU
NT
LIG
HT
TA
NK
CR
EW
. C
rew
bei
ng a
t di
smou
nted
pos
ts (
figur
e 4)
. T
ank
Com
man
der
Gun
ner
Bow
Gun
ner
Dri
ver
Com
man
d PR
E
PAR
E to
MO
UN
T.A
bout
fac
e.C
omm
and
MO
UN
T.M
ount
to
righ
t fe
nder
.M
ount
to
righ
t sp
onso
n.E
nter
tur
ret
and
take
m
ount
ed p
ost.
Con
nect
bre
akaw
aypl
ugs.
C
omm
and
REP
OR
T.
Abo
ut f
ace.
A
bout
fac
e.
Mou
nt t
o le
ft f
ende
r. St
and
fast
.
Mou
nt t
o le
ftsp
onso
n.
Ent
er t
urre
t an
d ta
kem
ount
ed p
ost.
Tur
n on
rad
io.
Con
nect
bre
akaw
aypl
ugs.
Rep
ort
"Gun
ner
Rea
dy".
Mou
nt t
o ri
ght
fend
er.
Ent
er B
og's
hatc
han
d ta
ke m
ount
edpo
st.
Con
nect
bre
akaw
aypl
ugs.
Rep
ort
"Bog
Rea
dy"
Abo
ut f
ace.
Stan
d fa
st.
Mou
nt t
o le
ft f
ende
r.E
nter
Dri
ver's
hat
chan
d ta
ke m
ount
edpo
st.
Tur
n on
mas
ter
switc
h.
Con
nect
bre
akaw
aypl
ugs.
Rep
ort
"Dri
ver
Rea
dy".
Fig
ure
4.
Mou
ntin
g th
roug
h ha
tche
s,
light
tan
k M
5A1.
9. T
O C
LO
SE
AN
D O
PE
N H
AT
CH
ES,
a.
Cre
w b
eing
at
mou
nted
pos
ts.
TO C
LOSE
H
AT
CH
ES.
Tan
k C
omm
ande
rC
heck
, th
at t
urre
t is
in
stra
ight
ah
ead
posi
tion;
ord
er
Gun
ner
to t
rave
rse
as n
eces
sary
.C
omm
and
CLO
SE
HA
TCH
ES.
Clo
se h
atch
.R
aise
per
isco
pes.
Com
man
d R
EPO
RT.
Gun
ner
Tra
vers
e tu
rret
as
orde
red
by T
ank
Com
man
der.
Clo
se h
atch
. R
aise
per
isco
pe.
Rep
ort
"Gun
ner
Rea
dy".
Bow
G
unne
rD
rive
r
Clos
e ha
tch.
Ra
ise p
eris
cope
.Cl
ose
hatc
h.
Rai
se p
eris
cope
.
Rep
ort
"Bog
Rea
dy".
Rep
ort
»Driv
erR
eady
".b.
Cre
w b
eing
mou
nted
and
hat
ches
clo
sed,
TO
OPE
N H
ATC
HES
-T
ank
Com
man
der
Gun
ner
Bow
Gun
ner
Che
ck t
hat
turr
et i
s T
rave
rse
gun
as
in s
trai
ght
ahea
d or
dere
d by
Tan
k po
sitio
n; o
rder
C
omm
ande
r. G
unne
r to
tra
vers
e as
nec
essa
ry.
Dri
ver
Tank
Com
man
der
Com
man
d O
PEN
HA
TCH
ES.
Low
er p
eris
cope
s. O
pen
hatc
h.
Com
man
d R
EPO
RT.
Gun
ner
Ope
n ha
tch.
Rep
ort
"Gun
ner
Read
y".
Bow
Gun
ner
Low
er p
eris
cope
. O
pen
hatc
h.
Driv
er
Low
er p
eris
cope
. O
pen
hatc
h.
Rep
ort
"Bog
Rea
dy".
Rep
ort
"Driv
er
Rea
dy".
10.
TO D
ISM
OU
NT
TAN
K C
REW
. H
atch
es b
eing
ope
n, t
o di
smou
nt w
ithou
t ve
hicu
lar
wea
pons
- Ta
nk
Com
man
der
Com
man
d PR
E PA
RE
TO
DIS
MO
UN
T
Dis
conn
ect
brea
k aw
ay p
lugs
.C
omm
and
DIS
MO
UN
T.
Gun
ner
Turn
off
radi
o.
Dis
conn
ect
brea
k aw
ay p
lugs
.
Bow
Gun
ner
Dis
conn
ect
brea
k aw
ay p
lugs
.
Driv
er
Turn
off
mas
ter
switc
h.D
isco
nnec
t br
eak
away
plu
gs.
Dis
mou
nt t
o ri
ght
spon
son.
D
ism
ount
to
right
fend
er.
Take
dis
mou
nted
post
.
Dis
mou
nt t
o le
ftsp
onso
n.
Dis
mou
nt t
o le
ftfe
nder
. Ta
ke d
ism
ount
edpo
st.
Dis
mou
nt t
o rig
htfe
nder
. Ta
ke d
ism
ount
edpo
st.
Dis
mou
nt t
o le
ftfe
nder
. Ta
ke d
ism
ount
edpo
st.
11. T
O D
ISM
OU
NT
THR
OU
GH
ESC
APE
HA
TCH
. (A
pplic
able
onl
y to
M5A
1 an
d la
ter
mod
els
equi
pped
with
esc
ape
hatc
h.)
Cre
w b
eing
at m
ount
ed p
osts,
to
dism
ount
with
out
vehi
cula
r w
eapo
ns.
Tank
C
omm
ande
rCo
mm
and
THR
OU
GH
ES
CAPE
H
ATC
H,
PREP
ARE
TO
D
ISM
OU
NT.
Dis
conn
ect
brea
k aw
ay p
lugs
.
Gun
ner
Bow
Gun
ner
Driv
er
Turn
off
radi
o.
Dis
conn
ect
brea
k aw
ay p
lugs
.R
aise
rec
oil
guar
d.El
evat
e br
eech
of
gun.
Dis
conn
ect
brea
k aw
ay p
lugs
.U
ncla
mp
spar
e pa
rts
box
from
esc
ape
hatc
h do
or a
nd
open
th
e do
or.
Turn
off
mas
ter
switc
h.D
isco
nnec
t br
eak
away
plu
gs.
Tan
k C
omm
ande
r
Com
man
d D
ISM
OU
NT.
Ent
er B
og's
com
part
m
ent,
feet
firs
t.D
ism
ount
thr
ough
es
cape
hat
ch.
Cra
wl
from
und
er
tank
; ta
ke d
is
mou
nted
pos
t.
Gun
ner
Mov
e to
rig
ht s
ide
of
turr
et.
Bow
Gun
ner
Dri
ver
Dis
mou
nt t
hrou
gh
esca
pe h
atch
.
Ent
er B
og's
com
part-
C
raw
l fr
om u
nder
m
ent
feet
firs
t. ta
nk;
take
dis
-D
ism
ount
thr
ough
m
ount
ed
post
, es
cape
hat
ch.
Cra
wl
from
und
er
tank
; ta
ke d
is
mou
nted
pos
t.
Ent
er B
og's
com
pa
rtm
ent.
Dis
mou
nt t
hrou
gh
esca
pe h
atch
.C
raw
l fr
om u
nder
ta
nk;
take
dis
m
ount
ed
post
.
NO
TE
: In
som
e m
odel
s of
the
lig
ht t
ank
the
Dri
ver
cann
ot c
ross
the
tra
nsm
issi
on i
nto
the
Bog
's co
mpa
rtm
ent.
In s
uch
case
s he
dis
mou
nts
by p
assi
ng t
hrou
gh t
he t
urre
t co
m
part
men
t. (T
he G
unne
r m
ust
mov
e an
am
mun
ition
box
fr
om t
he t
urre
t op
enin
g be
fore
this
can
be
done
.)
12. PEP DRILL. To maintain the interest of crew mem bers, frequent and unexpected periods of pep drill are interspersed in the crew drill and simulated firing rou tines. Pep drill is a series of precision movements exe cuted at high speed and terminating at the position of attention, either mounted or dismounted. For example, the crews being dismounted, the platoon commander may suddenly command, IN FRONT OF YOUR TANKS, FALL IN; MOUNT: DISMOUNT; ON THE LEFT OF YOUR TANKS, FALL IN; FORWARD, MARCH; BY THE LEFT FLANK, MARCH; TO THE REAR, MARCH; MOUNT! (figure 5). Preparatory com mands for mounting and dismounting are eliminated in this drill. The posts of all crew members are changed frequently. Pep drill freshens the interest of the crews, trains them to be agile in and around the tank, and in creases their coordination and physical development.
17
(a) DISMOUNT; on the left of your tanks, FALL IN.
(b) MOUNT.
Figure 5. Pep drill.
18
Section V
SERVICE OF THE PIECE
13. GUN CREW. a. The gun crew, 37-mm tank gun, consists of the gunner who aims and fires the piece and the assistant gunner (tank commander) who loads the piece when not observing, and controls and adjusts fire.
b. Training in service of the piece must stress rapidity and precision of movement and teamwork.
14. POSITIONS OF GUN CREW. Positions of the gun crew are as prescribed in paragraph 4b.
15. OPERATION OF GUN. a. To open the breech.Grasp the T-handle of the crank under the breechblock and pull down until the breechblock is locked in the open position.
b. To close the breech. The insertion of a round in the gun trips the extractors and causes the breechblock to close automatically. For this reason use care in clos ing the breech manually as follows:
(1) Insert an empty cartridge case in the breech, base foremost, and trip the extractors. The breechblock will close, pushing the cartridge case upward.
(2) If an empty cartridge case is not available a block of wood of the proper size may be used.
(3) If necessary, the extractors may be tripped by using the fingers. This is done by pulling down on the T-han dle and overcoming the tension of the closing spring. Then push the extractor lips forward with the fingers of the free hand and allow the breechblock to rise slow ly. Utmost caution must be exercised if this method is used.
19
K)
OPA
RAL
LEL
SIG
HT
LIN
KA
GE
SIG
HTI
NG
PER
ISCO
PE A
M
PER
ISC
OPE
H
EA
D
RES1
STAB
ILIZ
ER
CO
NTR
OL
BO
X
TELE
SCO
PIC
SIG
HT
M54
FIR
ING
M
EC
HA
NIS
M
BRAC
KET
ASSE
MBL
Y "—
—
37-M
M S
OLE
NO
ID
37.M
M G
UN
FI
RIN
G S
WIT
CH
.30
CAL
IBER
MG
FI
RIN
G S
WIT
CH
POW
ER T
RAV
ERSE
C
ON
TRO
L H
AN
DLE
TURR
ET F
RIC
TIO
N C
LAM
P
ELE
VA
TIN
G
HA
ND
WH
EE
L K
NO
B
TR
AV
EL
ING
LO
CK
AU
XIL
IAR
Y P
OW
ER
TRAV
ERSE
CO
NTR
OL
HA
ND
LE
OB
SE
RV
ATI
ON
PER
ISCO
PS
GY
RO
CO
NTR
OL
UN
IT
CO
AX
IAL
MA
CH
INE
GU
N
BREE
CH R
ING
.30
CAL
IBER
MG
S
OLE
NO
ID
BREE
CH
OP
ER
ATI
NG
M
EC
HA
NIS
M
BREE
CH (
REC
OIL
) G
UA
RD
TURR
ET L
OC
K
Fig
ure
6.
Tur
ret
and
gun
cont
rols
on
co
mbi
nati
on
gun
mou
nt
M44
, in
lig
ht t
ank
M5A
1.
Figure 7.
Left rear view
of turret trainer for light tank gun crews.
Fig
ure
8.
Dri
ver'
s co
mpa
rtm
ent,
light
ta
nk
M5.
1. Tr
aver
se h
and
cran
k 3.
Gun
ner's
sea
t2.
Pow
er t
rave
rse
clut
ch
4. R
adio
le
ver
Fig
ure
9.
Tur
ret
bask
et,
left
sid
e, l
ight
tan
k M
5.
Fig
ure
10.
Tur
ret
bask
et,
righ
t si
de,
tank
co
mm
ande
r's
seat
, li
ght
tank
MS.
c. To load. (1) Open breech by pulling down on T- handle until breechblock is locked in the open position.
(2) Grasp projectile at the base with left hand, turn nose of projectile to the front, swing arm toward the breech and insert round into recess of breech ring. After nose of projectile is aligned in chamber, shove round forward sharply with the thumb on the base, following through with the arm moving upward to clear the clos ing breechlock. Keep arm above gun to avoid the path of recoil, and tap gunner on the back.
d. To lay the gun. Locate target through the periscope. Turn the power traverse (pistol grip) control handle, or traverse with hand crank (figure 11) in the proper di rection until the vertical line of range dots (or dashes) is on the target, or the proper lead is taken. Make the final traversing motion against the greatest resistance, such as might be caused by cant in the tank. Then ele vate gun until the proper range marking is on the tar get (see FM 17-12).
e. To fire the gun. Squeeze the safety trigger 011 the power traverse control handle and press the 37-mm gun switch simultaneously (figures 5 and 6). If the round fails to fire, proceed as in paragraphs 17 and 18. The gun can be fired manually with the firing button in the hub of the elevating handwheel.
f. To unload an unfired round. To unload an unfired round, pull down the T-handle and the round will be ejected into the spent case bag. The round is then re turned to the rack.
g. To unload a stuck round. Whenever possible, rounds are removed from guns by shooting them out. When an unfired round is stuck in the gun and cannot be dislodged from the breech by using the rim of an empty cartridge case to pry it out, the gunner, under di rect supervision of an officer, or the tank commander, if no officer is present, inserts the rammer in the muzzle of the gun, pushes it through the bore until it meets the round, and then shoves the round out of the gun. DO
25
1. Periscope headrest2. Recoil adjuster knob3. Stiffness adjuster knob4. Firing switches for
• 37-mm gun and co axial machine gun
5. Power traverse (pistol grip) control handle
6. Safety trigger
7. Elevating handwheel8. T-handle9. Machine gun solenoid
10. Gyro control unit.11. Periscopic sight M4,
w/telescope M4012. Worm and sector gear13. Oil reservoir (filler
gauge)
Figure 11. Gunner's controls, combination gun mount M23.
26
NOT STRIKE THE ROUND WITH THE RAMMER. If pressure will not dislodge a round, tap the end of the rammer staff lightly with a block of wood, alternat ing tapping and pressure.
h. For further malfunctions and their remedies see paragraph 17.
16. SAFETY PRECAUTIONS, a. Before firing, and dur ing lulls in firing, inspect the gun to see that there are no obstructions in the bore.
b. In loading the gun, take care not to dent or burr the projectile by striking it against the breech ring. Clean ammunition before loading,. Never attempt to disassemble a round.
c. The gunner fires the gun only when the loader (tank commander) has tapped him on the back to signal that the gun is loaded and ready.
d. The 37-mm gun is fired only when the tank en gine^) are running or when at least one of the turret hatches is open to carry off the powder fumes.
e. Any individual who observes a condition which makes firing dangerous will immediately call or signal "CEASE FIRING".
f. Firing will cease immediately at the command or signal "CEASE FIRING", regardless of the source of the command.
g. Before loading, the solenoid firing devices are checked to insure that they are not stuck.
h. Tank weapons, except AA gun, are fired only when the Driver's and Bog's hatches are closed.
17. MALFUNCTIONS AND REMEDIES. Malfunctions of the gun are divided into three general classes: failure to fire, failure to load, and failure to extract. The most likely malfunctions are failures to fire. Malfunctions which are not the result of broken or worn parts are
enerally due to carelessness and improper cleaning of e parts and ammunition.
27
$
a. Failure of gun to fire. Cause
1. Safety lever on "Safe".2. Gun out of battery.
3. Defective firing mech anism.
4. Defective ammunition.5. Broken or defective fir
ing pin.6. Broken cocking lever.7. Broken cocking fork.8. Broken cocking lugs on
the percussion mechan ism.
9. Weak firing spring.
b. Failure of gun to load. Cause
1. Dirty round.
2. Dirty chamber.
3. Bulged round.4. Dirty breechblock
recess.5. Worn or broken
extractor lips.6. Bent or undersize rim
of round.7. Defective closing
mechanism.8. Burrs on bearing sur
faces of breechblock and breech ring.
9. Gun out of battery.
10. Weak closing spring.
28
Remedy1. Put lever on "Fire".2. Push gun into battery;
paragraph 18.3. Repair or replace.
4. Use a new round.5. Replace.
6. Replace.7. Replace.8. Replace.
9. Replace.
Remedy1. Remove round and
clean.2. Remove round and
clean chamber.3. Use a new round.4. Clean.
5. Replace.
6. Use a new round.
7. Repair or replace.
8. Report to Ordnance.
9. Put gun in battery, see paragraph 18.
10. Replace.
c. Failure of gun to extract.
Cause Remedy1. Broken extractor lips. 1. Pry or ram out empty
case and replace ex tractors.
2. Undersize or bent rim 2. Pry or ram out. of round.
3. Broken operating 3. Pry or ram out empty crank. case. Replace crank.
4. Broken operating lug. 4. Pry or ram out emptyround. Replace oper ating crank.
18. IMMEDIATE ACTION. The sequence following (trouble shooting) is done immediately after the gun fails to fire during combat, and repair or replacement of parts cannot be effected immediately, as can be done in gar rison.
a. Gun out of battery. (1) Push gun into battery by hand, relay, and fire.
(2) If gun still fails to fire, recock by hand (use board if necessary) and attempt to fire two times. If it does not fire, remove round to determine the cause of mis fire. (See AR 750-10)
(3) If gun will not go into battery by hand, fully depress muzzle. Slowly unscrew rear recoil drain plug, being careful not to remove it entirely. An excessive amount of oil might escape if the gun suddenly started back into battery. Allow oil to drain from around the plug until it will no longer flow from cylinder, then tighten filler plug and push gun back into battery by hand.
(4) If gun will not go into battery after checking recoil cylinder, check for dirt, burrs, and lack of lubri cation between the bearing surfaces of the recoil cylinder slides (rails) and sleigh guides. Clean, remove burrs, lubricate, reload, relay, and fire. (For a thor ough cleaning and inspection of these parts, unscrew
29
coupler key nut and remove coupler key; then pull barrel assembly to rear.) NOTE: It may be possible to continue gun in action by pushing it into battery each time. However, at the first opportunity the gun should be checked and repaired.
b. Gun in battery. (1) Breechblock not closed.(a) Close it manually, relay, and fire.(b) If it will not close, see if ammunition is seated.
If ammunition will not seat, remove round, reload, relay and fire. If ammunition still will not seat, clean chamber, reload, relay, and fire.
c. Ammunition is seated. Check for broken or worn extractor and closing spring, replacing if necessary. Clean and lubricate bearing surfaces of breechblock if necessary.
(1) Breechblock is closed.(a) Recock piece. If cocking action shows that piece
is still cocked (indicated by no resistance other than the cocking lever plunger spring), examine for bent or broken trigger arm, and for malfunction of trigger actua tor mechanism. Replace parts if possible, relay and fire. If trigger mechanism is not defective, remove firing spring retainer and check for weak or broken firing spring.
(b) If cocking action indicates that the sear lug has been released from the sear shoulder (indicated by heavy resistance to cocking action), relay and fire. If gun still fails to fire after twice repeating this action, remove percussion mechanism; clean, lubricate, replace defect ive parts, recock, relay, and fire.
(c) If gun fails to fire, unload, load with a new round, relay and fire.
(d) If cocking action shows that the sear lug will not remain engaged on the sear shoulder, disassemble breechblock, clean and replace defective parts.
30
Sect
ion
VI
MO
UN
TE
D A
CT
ION
19.
PR
EP
AR
E T
O F
IRE
. Th
e cr
ew b
eing
at
mou
nted
pos
ts, w
ith h
atch
es o
pen.
Tan
k C
omm
ande
rC
omm
and
PREP
AR
E TO
FIR
E.In
spec
t bo
re a
nd
cham
ber
of 3
7-m
m.
Hal
f-lo
ad
coax
ial
mac
hine
gun
.U
nloc
k tu
rret
tra
ve
rse
lock
.
Cle
an e
xter
ior
of
Gun
ner's
and
Tan
k C
omm
ande
r's
sight
s.
Gun
ner
Bow
Gun
ner
Che
ck s
olen
oids
and
Cl
ose
hatc
h; r
aise
man
ual
firin
g co
n-
and
clea
n pe
ri-tro
ls.
Hel
p lo
ad c
oaxi
alm
achi
ne
gun.
U
nloc
k gu
n tra
vel-
ing
lock
and
tur
ret
fric
tion
clam
p.
Wip
e of
f sig
hts.
Mak
e fie
ld c
heck
of
sigh
ts (
see
Par
41).
scop
e.
Rep
ort
"Rog
's ha
tch
clos
ed".
Unl
ock
bow
gun
tra
velin
g lo
ck.
Dri
ver
Clos
e ha
tch;
rai
se
and
clea
n pe
ri sc
ope.
Rep
ort
"Driv
er's
hatc
h cl
osed
".
Star
t au
xilia
ry
gene
rato
r.
toT
ank
Com
man
der
Com
man
d R
EPO
RT.
Gun
ner
Che
ck m
anua
l tra
ve
rse;
eng
age
pow
er t
rave
rse.
Turn
sta
biliz
er o
n if
situ
atio
n w
arra
nts.
Clos
e ha
tch.
Rep
ort
"Gun
ner
Rea
dy".
Bow
Gun
ner
Hal
f-lo
ad b
ow g
un.
Dri
ver
Rep
ort
"Bog
Rea
dy".
20.
DU
TIE
S IN
FIR
ING
. Ta
nk p
repa
red
to f
ire w
ith g
uns
load
ed.
Tan
k C
omm
ande
r G
unne
r B
ow G
unne
rG
ive
fire
orde
r as
pr
escr
ibed
in
FM 1
7-12
.R
eloa
d 37
-mm
gun
(e
xcep
t w
hen
ob
serv
ing
from
ope
n tu
rret
hat
ch).
Insp
ect
all
roun
ds
Fire
on
targ
ets
as
orde
red
by T
ank
Com
man
der.
Rel
oad
37-m
m g
un i
f
Fire
on
desi
gnat
ed
targ
ets
and
on e
m
erge
ncy
targ
ets
that
app
ear.
Whe
n no
t fir
ing,
ob
serv
e
Rep
ort
"Driv
er
Rea
dy". Dri
ver
Afte
r fir
e or
der
is is
sued
, av
oid
chan
ging
co
urse
an
d m
aint
ain
con
stan
t sp
eed
if m
ov
ing.
(S
teer
onl
y to
befo
re
load
ing,
an
d w
ipe
off
if ne
cess
ary.
03 w
Sign
al r
eady
by
tap
ping
.G
unne
r on
ba
ck.
Whe
n gu
nner
cal
ls
MIS
FIR
E,
chec
k th
at b
reec
h is
clos
ed a
nd g
un i
s in
bat
tery
. H
elp
Gun
ner
re-
cock
gun
.
Tan
k C
omm
ande
r is
obse
rvin
g fr
om
open
hat
ch,
or i
f he
is
in p
ositi
on
whe
re h
e ca
nnot
lo
ad.
in
assi
gned
se
ctor
.
If n
eces
sary
, ch
ange
re
coil
knob
set
ting.
Cal
l M
ISFI
RE
if
37-
mm
fai
ls
to f
ire.
Rec
ock
gun
and
fire.
If g
un f
ails
to
fire
afte
r tw
ice
repe
at
ing
this
act
ion,
see
Pa
r. 17
.
avoi
d ob
stac
les,
or
if ch
ange
of
dire
c tio
n is
orde
red;
av
oid
exce
ss s
teer
in
g or
sm
all
chan
ges)
. W
arn
Gun
ner
if ab
out
to p
ass
over
ro
ugh
grou
nd o
r if
abou
t to
cha
nge
cour
se b
y ca
lling
R
OU
GH
, or
C
HA
NG
ING
C
OU
RSE
.Se
lect
spe
ed w
hich
ca
n be
mai
ntai
ned
over
the
par
ticul
ar
terr
ain.
Whe
n ta
nk f
ires
from
st
atio
nary
pos
ition
, co
ntin
ue t
o ru
n en
gi
nes
unle
ss o
rd
ered
oth
erw
ise.
jjf
Tan
k C
omm
ande
r W
hen
Gun
ner
calls
ST
OPP
AG
E, r
e du
ce s
topp
age
in
coax
ial
mac
hine
gu
n.
Fire
coa
xial
m
achi
ne g
un a
t G
unne
r's c
omm
and
if so
leno
id f
ails
to
oper
ate.
Fi
re a
nti
airc
raft
mac
hine
gu
n. C
ontr
ol D
rive
r ov
er i
nter
phon
e.
Gun
ner
Cal
l ST
OPP
AG
E if
coax
ial
mac
hine
gu
n fa
ils t
o fir
e.
Not
ify T
ank
Com
m
ande
r w
hen
to
fire
coax
ial
ma
chin
e gu
n in
cas
e so
leno
id f
ails
to
oper
ate.
Dur
ing
lulls
in
firin
g,
obse
rve
in a
ssig
ned
sect
or.
Bow
Gun
ner
Dri
ver
21.
TO
SE
CU
RE
GU
NS.
Gun
ner
Tan
k C
omm
ande
rC
omm
and
CEA
SEFI
RIN
G,
SECU
REG
UN
S.
Cle
ar c
oaxi
al M
G,
unlo
ad 3
7-m
m g
un,
fron
t.in
spec
t bo
re a
nd
Tur
n of
f fir
ing
clos
e br
eech
. L
ower
pe
risco
pes,
open
hat
ch.
Bow
Gun
ner
Tra
vers
e tu
rret
to
Cle
ar B
ow M
G.
switc
h.T
urn
off
pow
er t
ra
vers
e, e
ngag
e
Lock
bow
gun
tra
ve
ling
lock
.Lo
wer
per
isco
pe,
open
hat
ch.
Dri
ver
Tur
n of
f au
xilia
ryge
nera
tor.
Low
er
peri
scop
e,op
en h
atch
. R
aise
sea
t to
con
voy
posi
tion.
Ref
ill 3
7-m
m r
eady
ra
cks.
Dis
pose
of
empt
y ca
rtri
dge
case
s.Lo
ck t
urre
t tr
a ve
rsin
g lo
ck.
If
situ
atio
n pe
rmits
, or
der
Bog
to
swab
bo
re.
man
ual
trave
rse.
T
urn
off
stab
ilize
r;en
gage
man
ual
ele
vatin
g ge
ar.
Ope
n ha
tch.
H
elp
refil
l 37
-mm
read
y ra
cks.
Hel
p di
spos
e of
empt
y ca
rtri
dge
case
s.Lo
ck f
rictio
n cl
amp.
Lo
ck g
un t
rave
ling
lock
. M
ake
field
che
ck o
fsi
ghts
.
Dis
pose
of
empt
y ca
rtri
dge
case
s.
Com
man
d R
EPO
RT.
Rep
ort
"Gun
ner
Rea
dy".
If s
o or
dere
d, d
is-
Put
on t
ape
mou
nt,
swab
bor
e,
muz
zle
cove
rs.
and
rem
ount
. Pu
t on
bow
mac
hine
gun
tape
muz
zle
cove
r.
Rep
ort
"Bog
Rea
dy".
Rep
ort
"Dri
ver
Rea
dy"
22. TO LOAD AMMUNITION. Wipe off, load and stow 37-mm gun ammunition with great care to avoid burring the rotating band, or denting the case. (See TM 9-1900). Different lots should be segregated. During periods between firing, ammunition is restowed to the most accessible racks. Test each round of ammunition by loading in gun.
23. TO LOAD ALL WEAPONS, a. The tank gun is loaded on order; this is normally the fire order, but some types of action will dictate loading prior to the appearance of the target. Machine guns are clear until the command PREPARE TO FIRE, when they are half-loaded. When the fire order is given, however, or the unit is deployed for combat, all machine guns are fully loaded. This does not necessarily apply to the AA gun, which is elevated and half-loaded as the tactical situation demands.
b. When the tank commander is not in a position to load (observing from the top of the turret), he com mands LOAD SHOT (HE). At the command the gun ner loads as directed.
36
Sec
tion
VII
DIS
MO
UN
TE
D A
CT
ION
24.
TO
FIG
HT
ON
FO
OT
TH
RO
UG
H H
AT
CH
ES,
a.
C
rew
bei
ng
at m
ount
ed
post
s,
hatc
hes
open
.N
OTE
: In
al
l dr
ills
whi
ch
incl
ude
man
ning
of
subm
achi
ne g
un,
it is
assu
med
tha
t th
e ta
nk i
s eq
uipp
ed w
ith f
our
subm
achi
ne
guns
M3.
The
refo
re,
whe
n th
e ca
l .3
0 M
G
is no
t di
smou
nted
to
figh
t on
foo
t, al
l cr
ew m
embe
rs w
ill d
ism
ount
with
sub
mac
hine
gun
M
3, p
lus
a su
bmac
hine
am
mun
ition
cas
e co
ntai
ning
six
30-
roun
d cl
ips.
Tan
k C
omm
and
er
Gu
nn
erC
omm
and
PREP
AR
E TO
FIG
HT
ON
FO
OT
.O
rder
dis
trib
utio
n of
Pro
cure
gr
enad
es
as
gren
ades
. or
dere
d.D
isco
nnec
t br
eak-
D
isco
nnec
t br
eak
away
plu
gs.
away
plu
gs.
Secu
re s
ubm
achi
ne
gun
and
amm
uni
tion
carr
ying
cas
e.
Bow
Gu
nn
er
Proc
ure
gren
ades
or
dere
d.D
isco
nnec
t br
eak
away
plu
gs.
Cle
ar b
ow g
un (
if lo
aded
).
Dri
ver
as
00T
ank
Com
man
der
Com
man
d D
IS
MO
UN
T.D
ism
ount
with
sub
m
achi
ne g
un a
m
mun
ition
and
bi
nocu
lars
.
Dis
mou
nt tr
ipod
8, la
y in
fro
nt o
f ta
nk.
Pick
up
two
boxe
s ca
l .3
0 am
mun
i tio
n.Le
ad c
rew
to
MG
po
sitio
n.
Gun
ner
Dis
mou
nt t
o re
ceiv
e sp
are
parts
rol
l an
d sp
are
bolt
as
sem
bly
from
dr
iver
.R
ecei
ve t
hree
box
es
cal
.30
amm
uni
tion;
pla
ce i
n fr
ont
of t
ank.
Rec
eive
bow
MG
fr
om B
og.
Bow
Gun
ner
Dri
ver
Pass
thr
ee b
oxes
cal
.3
0 am
mun
ition
to
Gun
ner.
Dis
mou
nt b
ow g
un
and
pass
it
to
Gun
ner.
Dis
mou
nt f
rom
tan
k,
pick
up
tripo
d an
d on
e bo
x ca
l .3
0 am
mun
ition
.
Pass
spa
re p
arts
rol
l an
d sp
are
bolt
as
sem
bly
to G
unne
r.
Rem
ain
in ta
nk;
driv
e it
to c
once
alm
ent.
Dis
conn
ect
brea
k aw
ay p
lugs
.M
ove
to t
urre
t; co
n ne
ct
brea
kaw
ay
plug
s to
Tan
k C
omm
ande
r's c
on
trol
box.
Mai
ntai
n co
ntac
t w
ith P
lato
on
Lead
er.
Supe
rvis
e fir
ing
of
Mou
nt g
un.
Mou
nt t
ripod
. M
an A
A o
r 37
-mm
M
G;
cove
r gu
n gu
n fr
om t
urre
t, as
cr
ew w
ith s
ub-
situ
atio
n de
man
ds,
mac
hine
gun
.M
an g
un a
s #2
. M
an g
un a
s #1
.°M
ake
sure
pin
tle a
nd e
leva
ting
mec
hani
sm a
re i
n tr
ipod
cas
e.If
not
, B
og o
btai
ns t
hem
fro
m s
pare
par
ts b
ox a
nd p
asse
s to
Gun
ner.
b. T
he d
ism
ount
ed c
rew
mov
es t
o th
e po
sitio
n in
dica
ted
by t
he t
ank
com
man
der,
or
in d
rill
as i
ndic
ated
in
figur
es 1
2 an
d 13
. Th
e cr
ew
mem
bers
ta
ke
post
s an
d pe
rfor
m
dutie
s of
the
cre
w o
f a
grou
nd m
ount
ed m
achi
ne
gun
as
pres
crib
ed
for
gun
drill
in
FM
23-
55.
c. In
com
bat
it is
assu
med
tha
t th
e ta
nk w
ill b
e m
oved
to
a co
ncea
led
posi
tion
if po
s si
ble,
bef
ore
the
crew
dis
mou
nts.
T
he d
rive
r re
mai
ns i
n th
e ta
nk,
mov
es i
t to
con
ceal
m
ent,
and
man
s th
e an
tiair
craf
t m
achi
ne g
un o
r ta
nk c
anno
n as
the
situ
atio
n de
man
ds.
25.
TO
RE
MO
UN
T F
RO
M A
CT
ION
TH
RO
UG
H H
AT
CH
ES.
Tan
k C
omm
ande
r G
unne
r B
ow G
unne
r D
rive
rC
omm
and
OU
T O
F A
CTI
ON
, M
OU
NT.
Supe
rvis
e ta
king
MG
Dis
mou
nt g
un.
Fold
tr
ipod
, la
y tri
- ou
t of
act
ion.
po
d an
d ca
l .3
0am
mun
ition
-box
in
fron
t of
tan
k.
Tan
k C
omm
ande
r
Stra
p tr
ipod
on
tank
fe
nder
.
Mou
nt t
o tu
rret
, ta
king
sub
mac
hine
gu
n an
d am
mun
i tio
n.C
onne
ct b
reak
away
pl
ugs.
Com
man
d R
EPO
RT.
Gun
ner
Pass
bow
MG
to
Bog.
Pass
sp
are
part
s ro
llan
d bo
lt as
sem
bly
to D
river
. Pa
ss 3
box
es c
al .
30am
mun
ition
to
Bog
.
Con
nect
bre
akaw
ay
plug
s.
Rep
ort
"Gun
ner
Rea
dy".
Bow
Gun
ner
Tak
e m
ount
ed p
ost.
Rec
eive
bow
MG
an
d m
ount
it.
Rec
eive
and
sto
w 3
bo
xes
cal
.30
am
mun
ition
fr
om
Gun
ner.
Con
nect
bre
akaw
ay
plug
s.
Rep
ort
"Bog
Rea
dy"
Dri
ver
Res
ume
mou
nted
po
st.
Rec
eive
and
sto
w
spar
e pa
rts
roll
and
bolt
asse
mbl
y.
Con
nect
bre
akaw
ay
plug
s.
Rep
ort
"Dri
ver
Rea
dy".
MOVES INTO TURRET, AFTER
TANK I
S CONCEALED,
GU
NN
ER—
No.
2BO
W
MAC
HIN
E G
UN
j SP
ARE
PAR
TS
RO
LL,
BOLT
ASS
EMBL
Y.
TANK
CO
MM
ANDE
RBO
W G
UNNE
R - N
o. 1
SUBM
ACH
INE
GU
N,
6 C
UP
S C
AL.
.4
5 A
MM
UN
ITIO
N;
S BO
XES,
CA
L.
.30
AM
MU
NIT
ION
; BI
NO
CU
LAR
S.M
ACH
INE
SUN
TR
IPO
D;
i BO
X C
AL.
.30
AM
MU
NIT
ION
.
Fig
ure
12.
Dis
mou
nted
act
ion,
cre
w f
orm
ed f
or d
rill
(ta
nk c
om
man
der
inst
ruct
ing)
.
Fig
ure
13.
Pos
ts o
f di
smou
nted
cre
w i
n ac
tion
.
26.
AC
TIO
N I
N C
ASE
OF
FIR
E. a
. Fi
re i
n en
gine
com
partm
ent.
The
first
cre
w m
em
ber
to d
isco
ver
the
fire
calls
EN
GIN
E F
IRE
-
Gun
ner
Bow
Gun
ner
Driv
erTa
nk
Com
man
der
Dis
conn
ect
brea
k aw
ay p
lugs
Rec
eive
"sp
eed"
w
renc
h fr
om
Bog.
Dis
mou
nt t
o re
ar o
fta
nk;
open
eng
ine
door
s w
ith w
renc
h.
Rec
eive
ext
ingu
ishe
rfr
om G
unne
r,st
and
by to
use
it in
case
fix
ed e
xtin
gu
ishe
r do
es n
otpu
t ou
t fir
e.
b. F
ire i
n tu
rret
or
driv
er c
ompa
rtmen
t. Th
e fir
st c
rew
mem
ber
to d
isco
ver
the
fire
calls
TU
RR
ET (
HU
LL)
FIR
E. T
he t
ank
is st
oppe
d an
d en
gine
s sh
ut o
ff. F
ire e
xtin
guis
h er
s ar
e pa
ssed
to
men
nea
rest
fire
and
oth
er c
rew
mem
bers
hel
p th
em i
n an
y w
ay p
os
sibl
e to
ext
ingu
ish
the
flam
e. T
he t
urre
t is
trave
rsed
in a
ny d
irect
ion
whi
ch w
ill a
id c
rew
to
rea
ch f
ire w
ith e
xtin
guis
hers
.
Pull
fixed
fire
ext
in
guis
her
cont
rol
hand
le.
Rec
eive
han
d ex
tin
guis
her
from
Bog
.R
elay
han
d ex
tin
guis
her
to T
ank
Com
man
der.
Rem
ain
at p
ost
for
furth
er o
rder
s.
Dis
conn
ect
brea
k aw
ay p
lugs
Pass
"sp
eed"
wre
nch
Stop
eng
ines
, (fr
om
tool
box
) to
Ta
nk
Com
man
der.
Pass
han
d ex
tin
guis
her
to
Gun
ner
in t
urre
t.
Dis
mou
nt;
go t
o re
ar R
emai
n at
pos
t fo
r of
tan
k an
d as
sist
furth
er o
rder
s. Ta
nk
Com
man
der.
27. TO ABANDON TANK. If it becomes necessary to abandon tank, the crew proceeds as in paragraph 10, 24, or 26, with the following changes or additions:
a. Time permitting deliberate action, the tank com mander displays the flag signal DISREGARD MY MOVEMENTS, and supervises the disabling of those weapons which remain in the tank. Backplates are re moved from machine guns and the percussion mecha nism from the tank gun. All similar spare parts are also removed. Individual weapons and maximum possible ammunition loads are carried. The driver dismounts in order with the rest of the crew.
b. Ordinarily the tank is abandoned as a result of a direct hit which either causes it to catch fire or disables it so 'that it becomes a vulnerable target. There may be a time interval of as little as five seconds in which the crew can escape without further injury. At the command ABANDON TANK, crew members throw open hatches, climb out, jump to the ground and take cover at a safe distance from the tank. It is particularly important in case of fire to hold the breath until clear of the vehicle. Inhaling the fumes and smoke of the fire may injure the lungs and will at least incapacitate the individual for a time.
28. ADVICE TO INSTRUCTORS, a. Disciplined and ef fective dismounted action requires long and arduous drill. Satisfactory results are obtained only by painstak ing repetition of each movement.
b. Training in dismounted action is undertaken in the field rather than in the tank park. Crews are required to dismount to fight on foot on all types of terrain and under every variety of simulated combat conditions with full loads of ammunition. Rough terrain compli cates the problem of dismounting from the escape hatch and develops ingenuity and physical agility not possible in tank park training.
c. Instructors explain and demonstrate to tank crews how necessary to their safety and success in combat is a
44
high state of training in dismounted action. They must point out that dismounted action from disabled tank taken under small arms fire usually is practicable only from the escape hatch, and that skill and practice in use of the escape hatch will pay dividends. The escape door is kept clean and well lubricated so that its release is immediate and positive. Frequent inspection of the mechanism is made by the tank commander to see that the locking rods are not bent.
29. PARK AND BIVOUAC PRECAUTIONS, a. Always have a guide when moving a tank in park or bivouac.
b. Keep at least 10 feet in front of tank and to one side of its path when directing the tank forward or backward in park or bivouac.
c. Walk, do not run while guiding a tank.d. Mount and dismount without using tube of gun as
a hand hold, or breech end of gun as a foot hold in en tering turret.
45
Section VIII
EVACUATION OF CASUALTIES FROM TANKS
30. GENERAL, a. The drill prescribed in the following paragraphs is for use in training crew members so that any two of them may evacuate casualties with maximum efficiency. A tank disabled by an enemy projectile may expect another hit without delay. When ammunition is ignited, evacuation must be effected in a few seconds. Therefore speed, rather than care in handling, is the primary consideration in removing a casualty from a tank.
b. Evacuation of casualties is undertaken only:(1) When the tank is disabled.(2) When the position of the casualty in the tank pre
vents the crew from functioning.(3) At the rallying point.
After evacuation, the casualty may be carried to a pro tected area where emergency first-aid is administered.
31. METHODS AND DEVICES. Not more than two men can work effectively at a single hatch opening. If the man nearest the casualty is unhurt, and tactical con siderations permit, he can help by remaining inside and improvising a sling (made up of pistol belts, waist belts, or field bag straps, see FM 17-80), or by moving the casualty to a position where he can be grasped from above and then aid in boosting him out. However, speed will usually dictate that the casualty be grasped by his clothing or by his arms for removal (figures 14 and 15). If there are injuries which will be aggravated by such methods, and time permits, some form of sling may be improvised to relieve that part from further injury (figure 16).
46
Figure 14. Evacuation of bog with arms crossed.
Figure 15. Evacuation of bog down front slope plate.
47
Figure 16. Evacuation of gunner with two pistol belts.
32. TO EVACUATE GUNNER (TANK COM MANDER). Crew being at mounted posts. (Note: The duties of No. 1 and No. 2 of evacuation team are inter changeable. The first man to realize the situation as sumes the initiative as No. 1).
No. 1 No. 2 Command EVACUATE
GUNNER (TANK COMMANDER)
Throw first-aid kit (kept in accessible spot in turret) to ground.
Mount to top of turret. Pass pistol belt to No. 1.
Mount to top of turret.
Slip pistol belt under eacharm of gunner.
Lift casualty throughhatch.
Lift casualty through hatch.
48
No. 1
Lower casualty to left sponson (or protected side, if tank is disabled).
Jump to ground; support lower portion of body as casualty is moved off tank.
Carry casualty to a pro tected area.
Report location and condi tion of casualty.
No. 2Hold body in a sitting po
sition on hatch cover.Lower casualty to left
sponson (or protected side if tank is disabled).
Jump to ground; support upper portion of body as casualty is moved off tank.
Help No. 1 carry casualty to a protected area.
33. TO EVACUATE BOG (DRIVER). Crew being at mounted posts.
No. 1Command: EVACUATE
BOG (DRIVER).Descend through turret
opening into Bog com partment, if necessary to open locked hatch cover.
Throw out first-aid kit.
No. 2
Move to Bog hatch opening.
Cross arms of casualty; pull one arm through hatch as No. 2 pulls on other arm.
Turn body to face rear ward as it is lifted out.
Straddle 37-mm gun, fac ing rearward.
Pull one arm of casualty through hatch as No. 1 pulls on other arm.
Turn body to face rear ward as it is lifted out.
Rest body in a supported position on rim of hatch opening.
49
No. 1Jump to ground in front of
tank; support trunk of body as it falls backward over forward slope of tank.
Carry casualty to a pro tected area.
Report location and condi tion of casualty.
No. 2Allow body to fall back
into No. 1's arms. Make sure legs are freed from hatch opening.
Jump to ground; support lower portion of body as it is carried to a protect ed area.
NOTE: In case a large man is to be evacuated, one man of team may have to enter vehicle and assist from the inside.
50
Section IX
INSPECTIONS AND MAINTENANCE
34. GENERAL, a. The tank commander is responsible for seeing that all inspections are made. He receives re ports from the various crew members relative to their individual inspections, and he indicates in his report anything requiring the service of maintenance person nel. In supervising first echelon maintenance he uses his discretion in delegating additional responsibilities to other crew members.
b. Inspection covers all personal equipment and wea pons, vehicle equipment and weapons and mechanical features of the vehicle. In combat it includes a check of the application of protective cream by the crew mem bers. Checks of instruments, lights, siren, track, sus pension system, and engine performance are made in accordance with provisions of the appropriate technical manual; the driver fills in his Driver's Report indicating required maintenance work. The Driver's Report should be carefully and thoroughly prepared. Any irregularity noted and entered on the report, which is not repaired before the tank is used again, should be re-entered on the report continually until it has been properly taken care of.
51
CN to35
. B
EFO
RE
OPE
RA
TIO
N I
NSP
ECTI
ON
. Ta
nk
lock
ed
and
cove
red
with
ta
rpau
lin.
(NO
TE:
For
train
ing
purp
oses
, th
e in
spec
tion
is di
vide
d in
to f
our
phas
es,
each
pha
se b
e in
g co
mpl
eted
by
all
crew
mem
bers
bef
ore
the
next
pha
se i
s be
gun.
Cre
w m
embe
rs u
se
tool
s as
nee
ded
and
repo
rt an
d co
rrec
t de
ficie
ncie
s as
fou
nd).
PH
ASE
A
Gun
ner
Tan
k C
omm
ande
r
Com
man
d FA
LL I
N:
PREP
AR
E FO
R
INSP
ECTI
ON
.In
spec
t cr
ew.
Com
man
d PE
R
FOR
M B
EFO
RE
OPE
RA
TIO
N
IN
SPEC
TIO
N.
Supe
rvis
e in
spec
tion.
H
elp
rem
ove
tar
paul
in.
Fill
out
trip
ticke
t du
ring
insp
ectio
n.In
spec
t ou
tsid
e M
ount
and
unl
ock
equi
pmen
t. ta
nk.
Bow
Gun
ner
Dri
ver
Stan
d in
spec
tion.
St
and
insp
ectio
n.
Stan
d in
spec
tion.
Hel
p re
mov
e an
d R
emov
e an
d fo
ld t
ar-
fold
tar
paul
in.
paul
in (
3' x
6')
Che
ck f
or w
ater
, fu
el L
ay t
arpa
ulin
to
and
oil
leak
s rig
ht o
f ta
nk,
arou
nd a
nd u
nder
' ta
nk.
Rec
eive
an
d as
sem
bl
e ra
mm
er s
taff
fr
om B
og a
nd M
G
clea
ning
rod
and
ra
gs f
rom
gu
nner
.
Com
man
d R
EPO
RT.
Ope
n tu
rret
hat
ches
; en
ter
turr
et.
Che
ck t
hat
turr
et
guns
are
cle
ar.
Mov
e to
Driv
er's
com
part
men
t; un
lo
ck D
river
's an
d B
og's
hatc
hes.
Pass
MG
cle
anin
g ro
d an
d ra
gs t
o T
ank
Com
man
der.
Pass
too
ls o
ut t
o D
river
.R
ecei
ve a
nd s
tow
gu
n co
vers
; cl
ear
bow
gun
s.St
ow b
reec
h co
vers
.O
pen
fuel
shu
t-off
va
lve.
Rep
ort
"Gun
ner
Rea
dy".
Che
ck r
adia
tors
and
R
emov
e ca
nnon
muz
- fu
el t
anks
for
leve
l. zl
e co
ver,
and
bow
gu
n co
ver.
Pass
ram
mer
sta
ff t
o Ta
nk
Com
man
der.
Che
ck f
inal
driv
es f
or
oil
leve
l.
Rec
eive
too
ls f
rom
G
unne
r.Pa
ss g
un c
over
s to
G
unne
r.La
y to
ols
on t
ar
paul
in a
nd c
heck
th
em.
(Fig
ure
17).
Rep
ort
"Bog
Rea
dy".
01 COR
epor
t "D
rive
r R
eady
".
Figure 17. Vehicular tools furnished each light tank (see SNLG-103). (The number and position of tools for a formal inspection
is a command decision.)
1. Bag, tool2. Bars, utility (2)3. Chisel, maehs, hand, cold4. Extension, socket wrench, plain, 10"5. Files, A.S., 6" & 8" (2)6. Fixture, track connecting and link pulling w/handle
(commonly called "track jack")7. Gun, lubr., pressure, hand8. Hammer, machs, ball peen, 32 oz9. Handle, cross extension, socket wrench, 8"
10. Handle, hinged socket wrench, 12", w/crossbar11. Handle, socket wrench, offset, dble-end12. Handle, "T", sliding, socket wrench13. Joint, universal, socket wrench14. Pliers, comb., slip-jt, 8"15. Pliers, side-cutting, fl-nose, 8"16. Ratchets, reversible, socket wrench, 9" (2)17. Screwdrivers, including one non-magnetic for Pioneer
compass (5)18. Sockets, 1/2" sq-drive, dble-hex, 7/16" to 3/8" (9)19. Wrench, adj., sgle-end, 8"20. Wrench, adj., rgle-end, 12"21. Wrench, brake, socket, w/liandle22. Wrenches, engrs, dble-hd, 5/16" to 1-3/8" (7)23. Wrenches, socket head set screws, 1/8" hex to 3/4"
hex (10)24. Wrench, trailing idler wheel nut & track adjusting25. Wrench, socket, speeder
54
PH
ASE
B
Tan
k C
omm
ande
rC
omm
and
PER
FO
RM
PH
ASE
B.
Ass
ist
Gun
ner
in
sigh
t ad
just
men
t.
Gun
ner
Mak
e si
ght
adju
st
men
t. Se
e pa
ragr
aph
42.
Swab
bor
e of
all
guns
. O
pen
gun
bree
ch.
Put
tape
muz
zle
cov-
Che
ck f
ollo
win
g:
ers
on a
ll gu
ns.
Coa
xial
and
AA
MG
and
adj
ust
head
spac
e.
37-m
m
amm
uni
tion.
Cal
.30
am
mun
i tio
n.37
-mm
and
MG
m
ount
s (c
lose
br
eech
).
Bow
Gun
ner
Che
ck w
ith D
rive
r th
at m
aste
r sw
itch
is of
f.O
pen
engi
ne c
om
part
men
t do
ors.
Che
ck f
ollo
win
g:
Tri
gger
typ
e oi
lca
n.E
ngin
e oi
l le
vels
. E
ngin
e co
mpa
rt
men
t fo
r w
ater
, oi
l an
d fu
el
leak
s.A
cces
sorie
s an
d dr
ives
for
ad
just
men
t an
d se
cu
rity.
Dri
ver
Ent
er D
river
's se
at.
Che
ck t
hat
mas
ter
switc
h is
off.
Insp
ect
and
chec
k fo
llow
ing:
B
atte
ry.
Oil
cans
and
oil
for
vehi
cle.
T
rans
fer
unit
and
diff
eren
tial
oil
leve
l. St
eerin
g le
vers
,pa
rkin
g br
akes
. Tr
ansm
issi
on a
ndtr
ansf
er l
ever
sfo
r op
erat
ion.
OI
05T
ank
Com
man
der
Com
man
d R
EPO
RT
.
Gun
ner
Tan
k C
omm
ande
r C
omm
and
PER
FO
RM
PH
ASE
C.
Insp
ect
righ
t tr
ack
and
susp
ensi
onsy
stem
. D
irec
t D
rive
r to
mov
e fo
rwar
d on
eta
nk l
engt
h.
Che
ck r
ight
sup
port
ro
llers
, bo
gie
Rep
ort
"Gun
ner
Rea
dy". Gun
ner
Bow
Gun
ner
Air
clea
ners
and
co
nnec
tions
.C
lose
eng
ine
com
pa
rtm
ent
door
s.
Rep
ort
"Bog
R
eady
".
Dri
ver
Aux
iliar
y ge
nera
tor
oil
leve
l. ..
Star
t ge
nera
tor;
ch
eck
oper
atio
n.
Rep
ort
"Driv
er
Rea
dy".
PHA
SE C
Che
ck f
ollo
win
g:
Oil
in t
urre
t re
ser
voir.
Oil
can
and
stab
ili
zer
oil.
All
firi
ng c
ontro
ls.
• B
ow G
unne
r D
rive
rN
otify
Dri
ver
to s
tart
Whe
n no
tifie
d by
en
gine
s.
Bog
, tu
rn o
n m
as
ter
switc
h.In
spec
t le
ft t
rack
and
St
art
engi
nes,
su
spen
sion*
sy
stem
. C
heck
ins
trum
ents
,w
arni
ng l
ight
s an
d si
ren.
Mov
e ta
nk a
s di
re
cted
by
T
ank
Com
man
der.
Che
ck l
eft
supp
ort
rolle
rs,
bogi
e
whe
els,
id
ler
and
spro
cket
as
tank
m
oves
for
war
d.
Insp
ect
that
par
t of
tr
ack
not
visi
ble
befo
re.
Che
ck f
or t
ight
ness
of
wed
ge n
uts
and
spro
cket
rin
g ca
p sc
rew
s.
Rep
lace
too
ls i
n ba
g an
d pa
ss b
ag t
o D
river
.
Tur
n on
turr
et m
aste
r sw
itch.
Che
ck s
tabi
lizer
op
erat
ion,
oil
rese
r vo
ir co
nnec
tions
an
d pu
mp.
whe
els,
idl
er w
heel
an
d sp
rock
et a
s ta
nk m
oves
for
w
ard.
Insp
ect
that
par
t of
tr
ack
not
visi
ble
befo
re.
Che
ck f
or t
ight
ness
of
wed
ge n
uts
and
spro
cket
rin
g ca
p sc
rew
s.
Ass
ist
Dri
ver
in
chec
king
dri
ving
an
d bl
acko
ut
light
s.C
heck
MG
tri
pod
case
for
pin
tle a
nd
elev
atin
g m
echa
n is
m.
Inst
all
radi
o an
tenn
a.R
epla
ce t
arpa
ulin
on
rear
dec
k.
Stop
eng
ines
. R
ecei
ve a
nd s
tow
tool
s. C
heck
driv
ing
and
blac
kout
lig
hts.
g
\Tan
k C
omm
ande
rPa
ss, r
amm
er s
taff
to
Bog
and
cle
anin
g ro
d to
Gun
ner.
Mou
nt t
o tu
rret
.
Ass
ist
in c
heck
ing
reco
il oi
l. C
onne
ct b
reak
away
plug
s.
Com
man
d R
EPO
RT
(int
erph
one
chec
k)
Rec
eive
and
sto
w
ram
mer
sta
ff.
hatc
h.
Gun
ner
Bow
Gun
ner
Rec
eive
and
sto
w
mac
hine
gun
cl
eani
ng r
od.
Che
ck w
ith D
rive
ran
d B
og t
hat
thei
r M
ount
and
clo
se
hatc
hes
are
clos
ed.
Che
ck m
anua
l el
eva
tion,
ope
ratio
n of
ha
nd a
nd p
ower
tr
aver
se,
and
turr
et
lock
.C
heck
rec
oil
cylin
de
r oi
l.C
onne
ct b
reak
away
pl
ugs.
Dri
ver
Clo
se h
atch
.
Con
nect
br
eaka
way
pl
ugs.
Con
nect
bre
akaw
ay
plug
s.
Rep
ort
'Gun
ner
Rea
dy".
Rep
ort
"Bog
Rea
dy".
Rep
ort
"Dri
ver
Rea
dy".
NO
TE
: In
lat
er m
odel
s of
the
Lig
ht T
ank
M5A
1, t
here
is
an e
mer
genc
y ig
niti
on s
wit
ch
on t
he r
ight
sid
e of
the
hul
l ro
of.
This
sw
itch
is le
ft
in
the
"ON
" po
sitio
n ex
cept
in
em
erge
ncie
s, w
hen
it is
used
by
the
Tan
k C
omm
ande
r or
oth
er p
erso
nnel
with
in r
each
.
PHA
SE D
Tank
Com
man
der
Com
man
d PE
R
FOR
M P
HA
SE D
.C
heck
fol
low
ing:
G
un b
ooks
, M
anua
ls,
Acc
iden
t Fo
rms,
Che
ck C
hart,
D
river
's pe
rmit,
Pe
risco
pe,
spar
e,an
d sp
are
head
. Sa
fety
bel
t.M
ake
first
ech
elon
ch
eck
of r
adio
and
in
terp
hone
sys
tem
. (S
ee P
ar.
41)
ot CD
Gun
ner
Che
ck t
rans
mis
sion
oi
l le
vels.
Not
ify D
river
to
star
t en
gine
s.
Che
ck
follo
win
g:
Safe
ty b
elt,
Hul
l co
mpa
ss,
Peris
cope
, sp
are,
spar
e he
ads,
Gre
nade
s, Pr
esen
ce o
f sp
are
parts
, to
ols
and
acce
ssor
ies
for
all
guns
.
Bow
Gun
ner
Che
ck b
ow g
un a
ndad
just
hea
dspa
ce;
put
on c
artri
dge
bag.
C
heck
fol
low
ing:
Bow
MG
am
mun
i tio
n,Pe
risco
pe,
spar
e,
and
spar
e he
ad.
Flag
set
,Fi
re e
xtin
guis
hers
,D
econ
tam
inat
ing
appa
ratu
s.V
ehic
ular
fir
st-a
id
kit,
Cre
w r
atio
ns.
Esca
pe h
atch
op
erat
ion,
Wat
er c
ans,
Can
vas
buck
et,
Dri
ver
Ope
n ha
tch.
Che
ck f
ollo
win
g:
Coo
king
sto
ve,
Peris
cope
, sp
are,
and
spar
e he
ad.
Safe
ty b
elt.
Star
t en
gine
s w
hen
notif
ied
by G
un
ner.
Con
stan
tly o
bser
ve
oper
atio
n of
en
gine
s fo
r sm
ooth
ne
ss,
sync
hron
iz
atio
n, u
nusu
al
noise
s.
OS o
Tank
Com
man
der
Com
man
d R
EPO
RT.
Gun
ner
Rep
ort
"Gun
ner
Rea
dy".
Com
plet
e tr
ip t
icke
t. R
epor
t RE
AD
Y t
o Pl
atoo
n Le
ader
.
Bow
Gun
ner
Safe
ty b
elt.
Ope
n ha
tch
Rep
ort
"Bog
Rea
dy".
Dri
ver
Rep
ort
"Driv
er
Rea
dy".
NO
TE:
The
flam
e th
row
er,
on t
anks
so
equi
pped
, is
chec
ked
in
this
ph
ase.
Th
e cr
ew m
embe
r us
ing
the
wea
pon
chec
ks i
ts co
nditi
on,
mec
hani
sm,
and
the
fuel
lev
el i
n its
tan
k in
acc
orda
nce
with
the
app
ropr
iate
pub
lishe
d gu
ide.
Whe
re i
t is
used
as
an a
lter
nate
wea
pon
to t
he b
ow m
achi
ne g
un,
it is
mou
nted
on
orde
r of
the
tan
k co
mm
ande
r.
36.
INSP
ECTI
ON
DU
RIN
G O
PER
ATI
ON
. Th
is i
s a
cont
inuo
us p
roce
ss o
f ch
ecki
ng b
y al
l cr
ew m
embe
rs.
Tank
Com
man
der
Gun
ner
Rem
ain
aler
t fo
r un
- C
heck
fol
low
ing:
us
ual
noise
s or
Se
curit
y of
tur
ret
cond
ition
s. lo
ck.
Ass
ist D
river
to a
void
Se
curit
y of
gun
.
Bow
Gun
ner
Wat
ch i
nstru
men
tsan
d w
arni
ng l
ight
s.
Lis
ten
for
unus
ual
nois
es.
Dri
ver
Che
ck a
ll in
stru
men
tsca
refu
lly.
Che
ck c
ontro
ls.
List
en f
or u
nusu
alno
ises.
obst
acle
s th
at
Stab
ilize
r op
era-
C
heck
sec
urity
of
wou
ld c
ause
inj
ury
tion.
bo
w g
un.
to t
ank
or c
rew
. C
heck
rad
io i
nter
ph
one
syste
m,
and
secu
rity
of r
adio
ante
nna.
C
heck
sec
urity
of
AA
gun,
sto
wag
e, a
ndeq
uipm
ent.
37.
INSP
ECTI
ON
AT
THE
HA
LT.
The
leng
th o
f ha
lt de
term
ines
the
ext
ent
of t
his
in
spec
tion.
Ite
ms
liste
d be
low
are
in
orde
r of
nor
mal
prio
rity.
Ta
nk C
omm
ande
r G
unne
r Bo
w G
unne
r D
rive
rC
omm
and
PER
FO
RM
HA
LT
INSP
ECTI
ON
.Su
perv
ise
halt
in-
Cle
an s
ight
s an
d pe
ri- D
isco
nnec
t br
eak-
D
isco
nnec
t br
eak-
sp
ectio
n (if
re-
sc
opes
. aw
ay p
lugs
. aw
ay p
lugs
, qu
ired
to d
ism
ount
Mak
e fie
ld c
heck
of
Dis
mou
nt a
nd c
lose
Id
le e
ngin
e 4-
5 m
in-
the
Gun
ner
mus
t si
ghts
(pa
r 41
). ha
tch.
ut
es b
efor
e st
op-
stan
d by
AA
gun
.) C
heck
fol
low
ing:
C
heck
fin
al d
rives
for
pi
ng.
Secu
rity
of g
uns
leak
s, ex
cess
ive
Che
ck e
ngin
e sy
n-
and
mou
nts.
tem
pera
ture
s.
chro
niza
tion
and
vmus
ual
noise
s.
O5
N)
Tank
Com
man
der
Stan
d by
AA
gun
.
Gun
ner
Stab
ilize
r co
nnec
tio
ns.
Turr
et m
echa
nism
. (C
heck
tha
t bo
w
hatc
hes
are
clos
ed.)
Rad
io
ante
nna.
Se
curit
y of
equ
ip
men
t in
gen
eral
.Pl
ace
gun
in t
rave
l in
g po
sitio
n.Lo
ck t
urre
t lo
ck.
Che
ck s
tow
age
of
equi
pmen
t in
tur
re
t.
Bow
Gun
ner
Che
ck u
nder
tan
k fo
rw
ater
, oi
l, or
fue
lle
aks.
Che
ck r
adia
tors
for
leve
l, le
aks.
Che
ck f
uel
tank
s fo
rle
vel
and
leak
s.
Che
ck p
rese
nce
and
secu
rity
of o
utsi
de
equi
pmen
t.C
heck
and
cle
an s
us
pens
ion
syste
m.
Che
ck p
rese
nce
and
secu
rity
of o
utsi
de
equi
pmen
t.H
elp
chec
k ai
r cl
eane
rs.
Take
mou
nted
pos
t.C
lean
per
isco
pe.
Con
nect
bre
akaw
ay
plug
s.
Dri
ver
Che
ck i
nstru
men
ts,
war
ning
lig
hts,
park
ing
brak
es.
Cut
eng
ines
, cl
ose
hatc
h an
d di
s m
ount
.O
pen
engi
ne c
om
part
men
t do
ors.
Mak
e vi
sual
che
ck o
f en
gine
com
part
men
t fo
r fu
el,
' w
ater
and
oil
leak
s, se
curit
y of
acc
es
sorie
s.C
heck
eng
ine
oil
leve
ls.Cl
ose
engi
ne c
om
partm
ent d
oors
.C
heck
air
clea
ners
.M
ount
Driv
er's
seat
.C
lean
per
isco
pe.
Con
nect
bre
akaw
ay
plug
s.
Tank
Com
man
der
Gun
ner
Bow
Gun
ner
Dri
ver
Com
man
d RE
PORT
.R
epor
t "G
unne
rRe
ady"
R
epor
t "B
og R
eady
".R
epor
t "D
rive
rR
epor
t R
EAD
Y t
o R
eady
".
Plat
oon
Lea
der.
38. A
FTE
R O
PER
AT
ION
MA
INT
EN
AN
CE
, a. A
fter
the
oper
atio
n th
e ta
nk i
s im
med
i at
ely
give
n w
hate
ver
serv
icin
g an
d m
aint
enan
ce i
s ne
eded
to
prep
are
it in
eve
ry w
ay
for
furt
her
sust
aine
d ac
tion.
Thi
s se
rvic
ing
cove
rs a
ll t
he p
oint
s li
sted
in
the
Bef
ore
Op
erat
ion
Insp
ecti
on a
nd c
over
s th
em i
n th
e sa
me
orde
r, w
ith
obvi
ous
mod
ific
atio
ns.
(For
ex
ampl
e, t
he t
ank
is lo
cked
at
the
end
of t
he i
nspe
ctio
n in
stea
d of
bei
ng u
nloc
ked
at t
he
begi
nnin
g; t
he c
heck
for
lea
ks u
nder
the
tan
k is
mor
e ef
fect
ive
afte
r it
has
stoo
d fo
r a
whi
le;
batte
ry s
witc
hes
are
turn
ed o
ff r
athe
r th
an o
n an
d on
ly a
fter
all
chec
ks r
equi
r in
g us
e of
bat
tery
pow
er;
equi
pmen
t is
cove
red
and
stow
ed r
athe
r th
an b
eing
unc
ov
ered
and
mad
e re
ady
for
use)
.b.
The
tan
k w
ill b
e co
mpl
etel
y cl
eane
d, s
ervi
ced,
and
rep
leni
shed
(fu
el,
oil—
all
type
s,
grea
se,
cool
ant,
amm
uniti
on—
all
type
s, f
irst
aid
kit,
wat
er,
and
ratio
ns).
All
spe
cial
pre
ca
utio
ns a
gain
st f
ire
wil
l be
obs
erve
d w
hile
ref
ueli
ng.
Cre
w m
embe
rs w
ill p
erfo
rm t
he
follo
win
g ad
ditio
nal
oper
atio
ns
not
cove
red
in t
he B
efor
e O
pera
tion
Insp
ectio
n.
Tank
Com
man
der
Gun
ner
Bow
Gun
ner
Dri
ver
Com
man
d PE
R
FOR
M A
FTER
O
PER
ATI
ON
M
AIN
TEN
AN
CE.
Forw
ard
com
plet
ed
trip
tic
ket
to p
la
toon
le
ader
, an
d re
port
of a
ll ne
ces
sary
2d
eche
lon
mai
nten
ance
, fu
el,
lubr
ican
ts,
amm
u ni
tion
and
ratio
ns
requ
ired.
Cle
an w
eapo
ns.
Hel
p D
river
cle
an
tank
.
Hel
p G
unne
r cl
ean
wea
pons
.
Idle
eng
ines
4 t
o 5
min
utes
bef
ore
stop
ping
.C
lean
tan
k su
spen
sio
n an
d ou
tsid
e of
ta
nk.
Hel
p G
unne
r cl
ean
wea
pons
.
39.
PER
IOD
IC A
DD
ITIO
NA
L SE
RV
ICES
. N
OTE
: In
gar
rison
the
se s
ervi
ces
are
per
form
ed w
eekl
y; o
n m
aneu
vers
or
in c
omba
t the
y ar
e pe
rfor
med
afte
r ea
ch f
ield
ope
ratio
n.
Tank
Com
man
der
Com
man
d FA
LL I
N:
PREP
AR
E FO
R
INSP
ECTI
ON
.In
spec
t cr
ew.
Gun
ner
Bow
Gun
ner
Driv
er
Stan
d in
spec
tion.
St
and
insp
ectio
n.
Stan
d in
spec
tion.
Com
man
d PE
RFO
RM
PE
RIO
DIC
IN
SPE
CT
ION
.
Insp
ect
and
supe
r vi
se w
ork
of c
rew
m
embe
rs.
Ent
er t
urre
t.
Tig
hten
al
l lo
ose
bolts
, nu
ts
and
conn
ectio
ns i
n tu
rret
.
Lub
rica
te g
un a
ndm
ount
as
need
ed.
Che
ck a
nd c
lean
part
s an
d to
ols
for
wea
pons
. D
rain
sed
imen
t fr
omfu
el t
anks
.
Tig
hten
all
wed
ge
nuts
, an
d in
spec
t tr
ack
and
susp
en
sion
sys
tem
.T
ight
en a
ll lo
ose
bolts
, nu
ts a
nd
conn
ectio
ns o
utsi
de
tank
.
VI
Cle
an f
uel
filte
r.T
ight
en a
ll lo
ose
bolts
, nu
ts,
and
conn
ectio
ns i
n co
mpa
rtm
ent.
Cle
an
com
part
men
t.C
lean
and
oil
esca
pe h
atch
.
Ent
er
Driv
er's
com
pa
rtm
ent.
Cle
an b
atte
ry a
nd
case
tho
roug
hly.
Mak
e hy
drom
eter
re
adin
g.C
heck
wat
er l
evel
.C
harg
e if
nece
ssar
y.T
ight
en a
ll lo
ose
bolts
, nu
ts a
nd
conn
ectio
ns
in
com
part
men
t.C
lean
com
part
men
t.O
pera
te a
nd c
heck
flo
or d
rain
val
ve.
O5
OS
Tank
Com
man
der
Gun
ner
Bow
Gun
ner
Com
man
d R
EPO
RT.
Hel
p pe
rfor
m 2
50-
mile
lub
ricat
ion.
Cle
an a
nd t
ouch
-up
any
rust
spo
ts i
n tu
rret
.
Rep
ort
"Gun
ner
Rea
dy".
Ope
rate
and
che
ck
floor
dra
in v
alve
.H
elp
perf
orm
250
- m
ile l
ubric
atio
n.
Driv
erD
ism
ount
; op
en
engi
ne d
oors
; cl
ean
engi
ne a
nd e
ngin
e co
mpa
rtmen
t; op
er
ate
and
chec
k en
gine
com
part
men
t dr
ain
valv
es.
Perf
orm
250
-mile
lu
bric
atio
n, r
efer
rin
g to
app
ropr
iate
gu
ide.
Clo
se e
ngin
e do
ors.
Rep
ort
"Bog
Rea
dy".
Rep
ort
"Driv
er
Rea
dy".
40. RADIO. The tank commander will make the follow ing inspection of radio sets (SCR-508, SCR-528, and SCR-538) prior to operation.
a. Cords. See that insulation and plugs are dry, un broken, and making good contact. Arrange loose cord age to prevent its entangling personnel or equipment.
b. Antenna. See that(1) Mast sections are tight. (Do not remove taped
joints.)(2) Leads at transmitter, receiver, and mast base are
tight.(3) Mast base is tight and not cracked.(4) Insulators that pass through the armor plate and
bulkheads are not broken or out of place.c. Radio set mounting, snaps, snubbers, etc. Check for
security and condition.d. Microphones, switches, headsets. Check for condi
tion and proper positions. Replace all defective head sets and microphones from spares and turn defective equipment in for repair or replacement.
e. Spare antenna sections. See that they are correctly placed in the roll and stowed to avoid being damaged.
f. Set grounding. Check connections.Ife-Tubes. See that th£y are firmly seated in the sockets.
Turn in the defective tubes at the earliest opportunity*h. Fuses. Check condition, and spare supply for num
ber and proper rating.i. Cleanliness. See that radio sets and associated equip
ment are clean.j. Battery voltage. Check with driver to see that the
battery voltage is kept up. If voltage is low, have driver start the auxiliary generator. Always have generator running when radio is used and tank engine is not.
k. Crystals. Check for number, position, and frequency. Be sure required crystals are present.
67
Section X
SIGHT ADJUSTMENT
41. FIELD CHECK OF SIGHTS. Frequent checking of the sights is vital in the field. This is done by selecting a distant aiming point as explained in paragraph 42a, and aligning the crosshairs of the coaxial telescope on it. Then check to see whether the crosshairs of the periscopic telescope coincide on the same point. If they do, the sights are assumed to be still in adjustment. If they do not, the adjustment has slipped and a new adjustment for both sights must be made.
42. SIGHT ADJUSTMENT. Sights are in adjustment when the axis of the bore is parallel to the line of sight ing of the telescope (and periscope). For practical pur poses these lines are considered parallel when they con verge on a point not less than 1500 yards distant.
a. Distant aiming point method. Select a point such as a building, telegraph pole, or smokestack at least 1500
Figure 18. Sight adjustment on distant aiming point.
68
(LIGHT TAMC USW/COMBWATION GUN MOUNT MS3)
PERISCOPE
Figure 19. Testing target for combination gun mount M23.
yards away, preferably one having distinct vertical and horizontal straight lines which intersect, and thus render the alignment of the crosshairs easier and more accur ate. Line the gun tube on this point, using the issue bore sights if they are available, or improvising cross hairs for the muzzle and sighting through the firing pin well of the closed breechblock. Then move both sights vertically and horizontally until their crosshairs coincide with the selected aiming point (figure 18). When there is a clamping device to secure this adjustment of the coaxial telescope once it is made, recheck after tighten ing to be sure that the adjustment has not been thrown off. Readings of the adjusting knob indices are re corded on all spare heads of the periscopic sights.
b. Testing target. When vision is limited by atmos pheric conditions, close country, or jungle growth, the best field check for sighting equipment is the testing target, since it requires a clearing only 80 to 120 feet
69
long. If issue testing targets are not available they may be constructed using the dimensions indicated for each gun mount in figures 19 and 20.
NOTE: Manufacturing variance frequently causes in dividual tanks to have dimensions varying widely from those used on the issue or constructed testing target. Therefore, the testing target must be carefully checked against the gun and sights which have been adjusted by the distant aiming point method on a clear day. Any discrepancies in dimensions will require that a separate testing target be constructed for use only with that tank gun.
The boresights are installed as in a, after which the crosshairs in the tube are aligned on the portion of the testing target marked "BORE". Without disturbing the gun, the sights are adjusted until the zero points in the reticles coincide with the intersection of the cross lines marked "PERISCOPE" and "TELESCOPE". Read ings of the adjusting knob indices are recorded on all spare heads of the periscopic sights.
Figure 20. Testing target for combination gun mount M44.
70
Section XI
DESTRUCTION OF MATERIEL AND EQUIPMENT
43. GENERAL, a. The destruction of materiel is a com mand decision to be implemented only on authority delegated by the division or higher commander. This is usually made a matter of standing operating pro cedure. It is ordered only after every possible measure for preservation or salvage of the materiel has' been taken, and when in the judgment of the military com mander concerned such action is necessary to prevent
(1) Its capture intact by the enemy.(2) Its use by the enemy, if captured, against our
own or allied troops.(3) Its abandonment in the combat zone.(4) Knowledge of its existence, functioning, or exact
specifications from reaching enemy intelligence.b. The principles followed are(1) Methods for the destruction of materiel subject to
capture or abandonment in the combat zone must be adequate, uniform, and easily followed in the field.
(2) Destruction is as complete as available time, equip ment, and personnel permit. If thorough destruction of all parts cannot be completed, the most important fea tures of the materiel are destroyed, and parts essential to the operation or use of the materiel and which cannot be easily duplicated, are ruined or destroyed. The same essential parts are destroyed on all like units to prevent the enemy's constructing'one complete unit from several damaged ones by "cannibalism".
c. Crews are trained in the prescribed methods of de struction. Training does not involve the actual destruc tion of materiel.
71
d. Methods. (1) The methods below are given in order of effectiveness. If method No. 1 cannot be used, de struction is accomplished by one of the other methods outlined in order of priority shown. Adhere to the sequences.
(2) Certain methods require special tools and equip ment such as TNT and incendiary grenades, which may not be items of issue normally. The issue of such special tools and materiel, the vehicles for which issued, and the conditions under which destruction will be effected are command decisions in each case, according to the tactical situation.
44. DESTRUCTION OF THE 37-MM GUN, TANK, aRemove the periscopic and telescopic sights. If evacua tion is possible, carry the sights. If evacuation is not possible, thoroughly smash the sight and all spare sights.
b. Method No. 1. (1) Open drain plug on recoil mech anism, allowing recoil fluid to drain. It is not necessary to wait for the recoil fluid to drain completely before igniting the fuse in (5) below.
(2) Remove an HE shell from a complete round and seat the shell in the chamber.
(3) Plug the bore for approximately two-thirds of its length, using a rammer staff wrapped with cloth or waste to make it fit tightly in the bore. Mud, stones, clay, or other material may be used to plug the bore in lieu of the cleaning staff.
(4) Cut down a 1/2-pound TNT block to fit snugly in the chamber behind the HE shell. Insert a tetryl non electric cap into the TNT block with approximately 3 or 4 feet of safety fuse. Close the breech as far as pos sible without damaging the safety fuse.
(5) Ignite the safety fuse and take cover. Elapsed time: 2 or 3 minutes if rammer staff is used to plug the bore and the cut-down TNT block is carried with gun; longer if other bore obstructions are used.
72
c. Method No. 2. (1) See b (1) above.(2) See b (3) above.(3) Insert one complete HE round into gun and close
breech.(4) Take cover and fire the gun, using a cord. Elapsed
time: 1 to 2 minutes using cleaning staff to plug the bore; longer if bore is plugged with mud, or other material.
d. Method No. 3. From point-blank range fire AP am munition at the gun tube until it is rendered useless.
e. Method No. 4. (Elapsed time: 2 or 3 minutes.)(1) See b (1) above.(2) Fire one HE round against a similar round jammed
in the muzzle. Take precautions prescribed in c (4) above.
45. DESTRUCTION OF THE GYRO-STABILIZER.a. Drain oil from system. b. Smash oil lines. c. Smash control box.d. Place an M14 incendiary grenade on control box
and pull pin.
46. DESTRUCTION OF CALIBER .30 MACHINE GUN. a. Method No. 1. Field strip. Use barrel as a sledge. Raise cover and smash down toward front. De form and break backplate; deform T-slot. Wedge lock frame, back down, into top of receiver between top plate and extractor cam; place chamber end of barrel over lock frame depressors and break off depressors. Insert barrel extension into back of receiver allowing the shank to protrude; knock off shank by striking with barrel from the side. Deform and crack receiver by striking with barrel at side plate corners nearest feedway. Elapsed time: 2-1/2 minutes.
b. Method No. 2. Insert bullet point of complete round into muzzle and bend case slightly, distending mouth of
73
case to permit pulling of bullet. Spill powder from case, retaining sufficient powder to cover the bottom of case to a depth of approximately 1/8-inch. Reinsert pulled bullet, point first, into the case mouth. Load and fire this round with the reduced charge; the bullet will stick in the bore. Chamber one complete round, lay weapon on ground, and fire with a 30-foot cord. Use the best avail able cover as this means of destruction may be dan gerous to the person destroying the weapon. Elapsed time: 2 to 3 minutes.
c. Small arms cannot be adequately damaged by fir ing with the barrel stuck in the ground, with or without a bullet jammed in the muzzle.
d. Machine gun tripod mount, calber .30 M2. Usemachine gun barrel as a sledge. Deform traversing dial. Fold rear legs, turn mount over on head, stand on folded rear legs, knock off traversing dial locking screw, pintle lock, and deform head assembly. Deform folded rear legs so as to prevent unfolding. Extend elevating screw and bend screw by striking with barrel; bend pintle yoke. Elapsed time: 2 minutes.
47. DESTRUCTION OF THE LIGHT TANK, M5 SER IES, a. Method No. 1. (1) Remove and empty the port able fire extinguishers. Smash radio (see paragraph 50). Puncture fuel tanks. Use fire of caliber .50 machine gun, or a cannon, or use a fragmentation grenade for this pur pose. Place TNT charges as follows:
(a) 3 pounds between engines.(b) 2 pounds against left side of transfer unit as near
differential as possible.(c) One-half pound against left fuel tank. Use only a
cap (no fuse) in this charge. Point cap end toward 3-pound charge. Insert tetryl nonelectric caps with at least 5 feet of safety fuse in each charge. Ignite the fuses and take cover. Elapsed time: 1 to 2 minutes if charges are prepared beforehand and carried in the vehicle.
74
(2) If sufficient time and materials are available, addi tional destruction of track-laying vehicles may be ac complished by placing a 2-pound TNT charge about the center of each track-laying assemblage. Detonate those charges in the same manner as the others. .
(3) If charges are prepared beforehand and carried in the vehicle, keep the caps and fuses separated from the charges until used.
b. Method No. 2. Remove and empty the portable fire extinguishers. Smash radio. Puncture fuel tanks. Fire on the vehicle using adjacent tanks, antitank or other ar tillery, or antitank rockets or grenades. Aim at the en gine, suspension, and armament in the order named. If a good fire is started, the vehicle may be considered de stroyed. Elapsed time: About 5 minutes per vehicle. Destroy the last remaining vehicle by the best means available. Danger from cannibalism is inherent in this method.
48. DESTRUCTION OF AMMUNITION, a. General.Time will not usually permit the destruction of all am munition in forward combat zones. When sufficient time and materials are available, ammunition is destroyed as indicated below. At least 30 to 60 minutes are required to destroy adequately the ammunition carried by com bat units. In general, the methods and safety precautions outlined in TM 9-1900 are followed whenever possible.
b. Unpacked complete round ammunition. (1) Stack ammunition in small piles. (Small arms ammunition may be heaped.) Stack or pile most of the available gasoline in cans and drums around the ammunition. Throw onto the pile all available inflammable material, such as rags, scrap wood, and brush. Pour the remaining gasoline over the pile. Sufficient inflammable material is used to insure a very hot fire. Ignite the gasoline and take cover.
(2) 37-mm ammunition is destroyed by sympathetic detonation, using TNT. Stack ammunition in two stacks, about three inches apart, bases toward each other. Use
75
one pound of TNT to six or seven pounds of ammuni tion. From cover detonate all TNT charges simul taneously.
c. Packed complete round ammunition. (1) Stack the boxed ammunition in small piles. Cover with all avail able inflammable materials, such as rags, scrap wood, brush, and gasoline in drums or cans. Pour other gasoline over the pile. Ignite and take cover. (Small arms ammu nition must be broken out of boxes or cartons before burning.)
(2) The destruction of packed complete round am munition by sympathetic detonation with TNT is not advocated for use in forward combat zones. To insure satisfactory destruction involves putting TNT in alter nate boxes of ammunition, a time-consuming job.
(3) In rear areas or fixed installations, sympathetic detonation may be used to destroy large ammunition supplies if destruction by burning is not feasible. Stack the boxes, placing in alternate boxes in each row suf ficient TNT blocks to insure the use of one pound per six or seven rounds of 37-mm ammunition. Place the TNT blocks at the base end of the rounds. Detonate all TNT charges simultaneously. See FM 5-25 for details of demolition planning and procedure.
d. Miscellaneous. Grenades, antitank mines, and anti tank rockets are destroyed by the methods outlined in b and c above for complete rounds. The amount of TNT necessary to detonate these munitions is considered less than that required for detonating artillery shells.
49. FIRE CONTROL EQUIPMENT. All fire control equipment including optical sights and binoculars, is difficult to replace. It is the last equipment to be de stroyed, if there is any chance of personnel being able to evacuate. If evacuation of personnel is made, all possible items of fire control equipment are carried. If evacuation is impossible, fire control equipment is thoroughly destroyed by smashing and burying.
76
50. DESTRUCTION OF RADIO EQUIPMENT, a. Books and papers. Instruction books, circuit and wiring diagrams, records of all kinds for radio equipment, code books, and registered documents are destroyed by burning.
b. Radio sets. (1) Shear off all panel knobs, dials, etc., with an axe. Break open set compartment by smashing in the panel face, then knock off the top, bottom, and sides. The object is to destroy the panel and expose the chassis.
(2) On top of the chassis strike all tubes and circuit elements with the axe head. On the underside of the chassis, if it can be reached, use the axe to shear or tear off wires and small circuit units. Break sockets and cut unit and circuit wires. Smash or cut tubes, coils, crystal holders, microphones, earphones, and batteries. Break mast sections and break mast base at the insulator.
(3) When possible, pile up smashed equipment, pour on gas or oil and set it on fire. If other inflammable material, such as wood, is available, use it to increase fire effect. Bury smashed parts whether burned or not.
77
APPENDIX
REFERENCESSee FM 21-6, List of Publications for Training, and
FM 21-7, List of Training Film Strips, and Film Bulle tins, for full list of references.FM 17-5 Armored Force Drill.FM 17-12 Tank Gunnery.FM 21-5 Military Training.FM 23-40 Thompson Submachine Gun, Cal .45,
M1928A1.FM 23-41 Submachine Gun, Cal .45, M3.FM 23-55 Browning Machine Gun, Cal .30.TM 9-250 37-mm Tank Gun M6.TM '9-732 Light Tanks M5 and M5A1.TM 9-850 Cleaning, Preserving and Lubricating
Materials.TM 11-600 Radio Sets SCR-508, SCR-528, and
SCR-538.War Department Lubrication Order No. 81.Preliminary Inspection for Radio Sets SCR-508, SCR-
528, and SCR-538.SNL G-103 Light Tank, M5 Series.SNL K-l Cleaning, Preserving, and Lubricating
Materials.SNL A-45 37-mm Gun M6.Training Tank Driving, Part II—Advanced. Film 17-576
Film Strip Cavalry Weapons — Browning Machine 2-18 Gun, Cal .30, M1919A4-Headspace
Adjustment, Care and Cleaning, Me chanical Functioning.
78
Film Strip Browning Machine Gun, Cal .30, HB, 7-60 M1919A4 (Ground). Part I.
Film Strip Browning Machine Gun, Cal .30, HB, 7-61 M1919A4 (Ground). Part II.
Film Strip Browning Machine Gun, Cal .30, M1917, 7-63 Part VIII. Section I, Stoppages and
Immediate Action.Film Strip Thompson Submachine Gun, Cal .45,
17-2 M1928Al-Mechanical Training.Film Strip Cal .45 Submachine Gun, M3. 17-32
79
INDEXParagraphs Pages
Abandon tank __————————————————— 27 44 Action:
Dismounted ____________———— 24-29 37In case of fire __——-———————— 26 43Mounted _____________————— 19-23 31
Advice to instructors ___ — ——— —— — -—— 28 44Ammunition:
Destruction ______—__——————— 48 75 Inspection before firing ___———————— 20, 35 32, 52 Loading in tank __ —— —— _ — ——— — - 22 36
Auxiliary generator:To inspect —— —— ————— _ ————— — - 35 52 To start or stop ——————————————— 19, 21 31, 34
Breechblock:To close __________________ 15 19 To open ———— —— —— — —— ———— —— 15 19
Crews:Composition __ — —— — __ —— ————— 3 4 Control ____________________ 5, 6 6, 8 Drill ______________________ 7-12 10 Formations ______—_________ 4 5To close and open hatches _______ 9 13 To dismount _ ——————___—————.— 10 14 To form ____________________ 7 10 To mount __________________ 8 11
Destruction of materiel ___________ 43—50 71Dismounted action ________________ 24-29 37 Dismounting:
Through escape hatch _________ 11 15Through hatches ______________ 10 14
Duties in firing _________________ 20, 23 32Empty cases ____________________ 21 34, 36Equipment, destruction of __________ 43—50 71Escape hatch, to dismount through _____ 11 15 Evacuation of casualties ____________ 30—33 46 Extinguishers, fire ________________ 26 43
80
Paragraphs Pages
Field check of sights ______________- 41 68 Fire:
Engine ____________________ 26 43Hull _____________________- 26 43
Fighting on foot ________________-- 24, 25 37, 39 Firing:
Duties of crew _______________ 20 32To cease _________________—— 21 34
Formations ________________————— 4 5 Gun crew:
Composition ______________ 13 19Positions ___________________ 4, 14 5, 19
Gun, 37-mm tank:Destruction _________________ 44 72Firing _____________________ 15 19Immediate action ____________ 18 29Inspections _________________ 35-39 52Laying ____ —— ____________ 15 19Loading and unloading _________ 15 19Malfunctions and remedies _______ 17 27Operation ________________ 15 19To secure __———____________ 21 34
Immediate action ——___———— —— —— — 18 29Inspections:
After operation —_____________ 38 63At the halt ————___.____———__ 37 61Before operation —————————————— 35 52During operation _______________ 36 60Periodic additional services _______ 39 64Radio _____________________ 40 67
Interphone operation —————————————— 5, 6 6, 8Maintenance after operation —————————_ 38 63Mounted action _________________ 19-23 31Mounting through hatches —————————— 8 11Muzzle covers ———————————-——___ 21, 35 34, 52Operation of gun ————————————————— 15 19Out of action ————————_-———---___ 25 39Park and bivouac precautions ———————— 29 45
81
Paragraphs Pages
Pep drill ______________________ 12 17 Posts:
Dismounted ———___ — — —— —— _—— 4 5Mounted ________________ 4 5
Prepare to fire _________————————_ 19 31Purpose and scope ——__— — — _ —— — ___ 1 1 Radio:
Destruction _________________ 50 77Inspection _ — —— ___ — — — . — —— _ 40 67Operation _________________ 5 6SCR-506 ___________________ 5 6
Ready rack, to refill _______________ 21, 22 34, 36Safety precautions ________________ 16, 29 27, 45Service of the piece ________________ 13-18 19Sight adjustment _________________ 41, 42 68Tank, destruction of -____________ 47 74Turret control ___________________ 6 8 Weapons:
Destruction ______________ 27, 44, 46 44,72,73Inspection __________________ 19, 35 31, 52To load ___________________ 23 36
RU-2032-H-Knox-6-44-21M
82