r32 skyline

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CON4PRESSION PRESSURE / BELT TENSION INSPECTION RB26DETT I RB20E DE DET / CA18 i / RB2sDE ENGTNE

Compression gauge instal lat ion . Warm up the engine and remove al l 6 spark plugs. . Attach the adapter to the Allen compression gauge and

set rt in a spark plug hole.

Compression pressure inspection ' Depress the acceleration pedalfully. Turn the ignition switch to START position and crank

the engine. Read compression pressure and the engine speed once the gauge needle stops movrng.

. When engine speed is out of specifications, check the specific gravity of the battery and perform test again if the battery is functioning properly.

. lf the compression pressure is still notstandard, inspect the components around the combustion chamber (valves, valve seat, hydraulic valve lifters, piston rings, cylinder bore, cylinder head, cylinder head gasket etc.). Correct any malfunctions and repeat compression test.

3. BELT TENSION INSPECTION AND ADJUSTMENT

Inspection The inspection should be performed when the engine cold or more than thirty minutes after the engine has been stopped.

RB26DETT / RB2ODE, DET / RB2sDE ENGINE

an.trs

Power steering belt Standard Poly-V low-

maintenance belt

I - 1 0 9 - 1 0 t c

With HICAS 8 - 1 0 1 0 - 1 2 1 6

Air corditioner compressor belt Poly-V low- maintenance belt 6 - 8 7

- 9 1 2

Fan belt Poly-V low- maintenance belt

3 - 5 4 - 6 7.5

E N - 4 3

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RB2OE ENGINE

. llew Tension limit

Power steering belt Poly-V low-

maintenance belt 8 - 1 0 9 - 1 1 1 5

Air conditioner comPressor belt Poly-V low-

maintenance belt 6 - 8 7 - 9 1 2

Fan bett Poly-V low-

maintenance belt 3 - 5 4 - 6 7 5

BELT TENSION INSPECTION & ADJUSTMENT RB26DETT / RB2OE / DE / DET / CA18 i / RB2sDE ENGINE

CA18 i ENGINE

Belt def€ction (run) lokg of force lE appfcd at tha

- V

' Po3ltionl

Adluslrnsnl Tenrlon llnit

Power steering pump bett Poly-V low-

maintenance belt I - 1 1 1 0 - 1 2

Air conditioner comPressor belt Poly-V low-

maintenance belt 6 - 8 7 - 9 1 2

Fan belt Poly-V low-

maintenance belt 4 - 5 4 .5 - 5 .5 6

Caution: .1 . When the belt is replaced with a new belt increase the tension slightly more than for the

used belt to allow for wear-in of the new belt. 2. When the belt deflection exceeds the limit, adjust to the

"Adjustment" value. 3. Make sure the pulley groove is aligned correctly when the belt is installed.

Adjustment

lTEM

PART . . . . , ,

Power steering belt Adjustment bolt in power steering pump

Air condit ioner compressor bel t Adjustment bolt in idler Pulley

Fan bel t Adiustment bolt in alternator

E N . 4 4

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VALVE CLEARANCE INSPECTION & ADJUSTI\,4ENT RB26DEi i RB2 'E DE DET i CAIB i / RB25DE ENGINE

4.VALVE CLEARANCE INSPECTION AND ADJUSTMENT Addit ional work required (remove the fol lowing parts): . Air duct . Rocker cover

Inspection . Inspect the valve clearance when the engine is cold. . Remove the air duct, ornaments and the rocker cover. . Rotate the crankshaft and align crankshaft pulley mark with the belt cover indicator. . No. 1 cylinder is at the compression stroke top dead centre when both the intake and

exhaust side cams do not move the valve lifters.

. Rotate the crankshaft one revolution (360.) and align the mark on the crankshaft pulley with the belt cover indicator. (No. 'l cylinder piston exhaust T.D.C),

INTAKE SIDE Cyl inder No. 1 , 2 , 4

EXHAUST SIDE Cylinder No. 1 , 3, 5

Fi r ing order : 1 - 5 - 3 - 6 - 2 - 4

INTAKE SIDE Cyl inder No. 3 , 5 ,6

EXHAUST SIDE Cyiinder No. 2, 4, 6

Valve clearance standard value

Caution: Always check the valves when they are cold.

i V"lu"" to be adjusted lntake side

Exhaust side

(20+t-5C)

PART INTAKE

Valve clearance (cold) mm 0 45+ ' I r r 0.38r.1' o:,

(Reference value: warm) mm 0.51 ' , " ' : 0 .44 , ' 0 03

E N . 4 5

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VALVE CLEARANCE INSPECTION & ADJUSTMENT RB26DETT / RB2OE / DE / DET / CAI B i / RB25DE ENGINE

Valve clearance measurement -

. Insert a 0.1 5 - 0.20 mm gauge (A) from spark plug side. Insert gauge (B) from opposite side. Select a gauge thickness that will reduce the clearance to 0 m.

Note: Do not use more than two gauges (B). Use JIS 1 50A25 feeler gauge.

Vatve clearance = Gauge (A) + Gauge (B) Reasons for measurement using gauge (A) and (B) : '1. The valve clearance setting is larger compared to

previous engines. 2. Large gauges cannot be placed parallel to the

measurement surface. . Thick feeler gauge have high rigidity and cannot be bent

easily, so the measurement will be incorrect. . The error factor increases if a number of thin gauges are

layered and the measurement will be incorrect.

Valve clearance adjustment . The valve clearance adjustment is performed by

selecting a shim of suitable thickness. . When the measurement valve clearance (t) is out of

soecification, measure the shim thickness (T) and replace it with a shim that will produce the standard dearance.

1. Shim thickness calculat ion method Example: When the intake valve clearance (t) is 0.50 mm: 0.50 (t) - 0.45 (specif ied value) = 0.05 mm . The valve clearance is 0.05 mm greater than the specified value. . Use a shim 0.05 mm thicker than the current shim to reduce the valve clearance.

2. Current shim thickness (T) . Measure the centre of removed shim to determine the

thickness of the current shim. Caution: Do not reuse the measured shims again

3. Shim selection Current shim thickness (T) is 2.40 mm. 2.4O F\ mm + 0.05 mm = 2.450 Select new shim with stamped mark 124 '401

I --2.440-2.455).

Select a shim within st