Crower Cams & Equipment Co., Inc 6180 Business Center Court

San Diego, CA. 92154 Phone: 619.690.7848 ext. 148

Fax: 619.690.7846 www.crower.com

PULL MASTER SERIES SPRINGER Installation Booklet Spring & Counter Weight Charts

1 6

BASIC INSTALLATION INSTRUCTIONSSTEP 1 Install pilot bearing in flywheel (most applications). STEP 2 Install flywheel on crankshaft. Fit should be easy slip or slightly snug. STEP 3 Install flywheel bolts and washers, making sure all threads are clean and free of oil and debris. Use red or green Locite and torque to proper specs: 1/2” - 20 bolts = 100 to 105 ft lbs. 7/16” - 20 bolts = 75 to 80 ft lbs. STEP 4 Install stands and spacers (if any) making sure flats are not overlapping facing plate. STEP 5 Install discs and floater plates in proper sequence and insert pilot shaft to line up and hold discs into position. STEP 6 Install pressure plate assembly. Line up with serial numbers on flywheel if applicable. STEP 7 Install pressure plate sleeve washers and nuts using a small amount of anti-seize. STEP 8 In a rotational cross pattern, snug pressure plate nuts enough to draw pressure plate down to within .010” of It’s final position. Use the dial indicator at each stand location (see figure 1). STEP 9 Rotate stands up to meet the pressure plate and torque: 1/2” nuts - 75 to 80 ft lbs. STEP 10 To move pressure plate, loosen nut and rotate adjusting stand up or down to achieve proper height (see figure 1). STEP 11 Now that the pressure plate is close to its final setting, use the dial indicator again to obtain the exact pressure plate height. Slip should pass zero once then make one full revolution back to zero. This is the correct installed height. Proceed to the next hole until all are zeroed and doubled checked.

CLUTCH COUNTERWEIGHTS

SIZE

5/16”

5/16”

5/16”

5/16”

5/16”

5/16”

5/16”

5/16”

5/16”

5/16”

5/16”

5/16”

1/4” X 1/2”

1/4” X 3/4”

1/4” X 1”

1/4” X 1 1/4”

1/4”

1/4”

1/4”

DESCRIPTION

Washer

Jam Nut

Full Nut

Slug

1/2” Long Bolt

3/4” Long Bolt

3/4” Long Bolt

1” Long Bolt

1 1/4” Long Bolt

1 1/4” Long Bolt

1 1/2” Long Bolt

2” Long Bolt

Bolt

Bolt

Shoulder Bolt

Shoulder Bolt

Thin Washer

Thick Washer

Jam Nut

WEIGHT

1.1g

3g

1g

8g

9g

11g

3.7g

13g

15g

5g

17.7g

22.5g

5.5g

6.5g

8.5g

9.5g

1g

2.2g

2g

MATERIAL

Steel

Steel

Aluminum

Steel

Steel

Steel

Aluminum

Steel

Steel

Aluminum

Steel

Steel

Steel

Steel

Steel

Steel

Steel

Steel

Steel

Caution!Never start the engine with only the flywheel installed.

The engine may only be started once the clutch is installed, complete (stands, pack, pressure plate) torqued etc. in ready to run condition with bell housing and transmission in place.

Failure to follow the guidelines will result in major damage to clutch, vehicle, other components, and can result in

serious injury or death.

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At this point the pressure plate should have .850” from the top cover to the donut plate (see figure 2.) and .255” between the top cover to the donut plate (see figure 3.). Note, the dial indicator is used as a reference gauge and should be checked periodically insure accuracy. Check this by setting clutch as described in figures 2 & 3, then calibrate the dial indicator by inserting it into the checking hole and resetting.

Figure 3 - Checking pressure plate height with dial calipers using the inside measuring faces. The correct measurement between the top cover and the donut plate is .225". This measurement can only be made with the bellhousing removed.

STEP 12 CLUTCH RELEASE CLEARANCEInsert dial indicator into checking hole and hold into position. Have team member depress clutch pedal. Set pedal stop so that the clutch has between .100" and .150" release clearance. Always check 2 holes 180° apart then average the number. Always use pedal stop, never allow the clutch levers to contact the pressure plate if possible.

Figure 1 - Needle will be at zero when pressure plate is at the properly installed height. Needle will pass zero once and then make one complete revolution back to zero. Make sure nut is torqued before checking with a dial indicator.

Figure 2 - Check pressure plate height with calipers, using the depth measuring blade. Correct height is .850", this measurement can be made through the inspection hole.

SPRING CHART # 5

# OF TURNS

1/2 1

1 1/2 2

2 1/2 3

3 1/2 4

4 1/2 5

5 1/2 6

6 1/2 7

7 1/2 8

8 1/2 9

9 1/2

10

10 1/2

11

11 1/2

12

TOTAL STATIC

96 lbs

184 lbs

280 lbs

376 lbs

472 lbs

568 lbs

672 lbs

768 lbs

856 lbs

960 lbs

1048 lbs

1144 lbs

1256 lbs

1352 lbs

1440 lbs

1544 lbs

1640 lbs

1736 lbs

1856 lbs

1944 lbs

2040 lbs

2144 lbs

2240 lbs

2344 lbs

# OF TURNS 0

1/2 1

1 1/2 2

2 1/2 3

3 1/2 4

4 1/2 5

5 1/2 6

6 1/2 7

7 1/2 8

8 1/2 9

9 1/2

10

Old style cups

New style cups

The hole in the cup allows you to hold the adjuster form turning by inserting a (.125” ) dia pin in the chamfered hole *.

Your base starts at 376 lbs

*

SPRING CHART # 5 W / NEW STYLE ADJUSTER

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RECOMMENDATIONS: STEP 1 Remove clutch from vehicle making sure to keep all parts such as discs and floaters in the same order they were installed. STEP 2 Wipe clutch discs clean with dry cloth. STEP 3 Clean floaters, flywheel, stands and pressure plate assembly with cleaning fluid and dry thoroughly, make sure not to mix-up stands if you remove male from female. STEP 4 Check discs for chipping, warping, glazing and discoloration. STEP 5 Check floaters for cracks, warping, worn lugs, high spots and discoloration.

STEP 1 Remove inspection covers/access plates. STEP 2 Cool clutch with electric fan. STEP 3 Check for wear with dial indicator. STEP 4 Check release clearance. STEP 5 Reset release clearance if it exceeds .020” of original setting. STEP 6 Visually inspect clutch though inspection hole making sure there is ample throw-out clearance (3/8”), all counterweight bolts and nuts are tight, no excessive wear of levers, no immediate discoloration of discs or floaters or anything else unusual. STEP 7 Always re-torque pressure plate nuts after each run regardless of whether or not readjustment is required. STEP 8 Make any clutch changes that may be required and install inspection covers.

BETWEEN ROUND PROCEDURES

BETWEEN RACE MAINTENANCE

RECOMMENDATIONS (continued): STEP 6 Check flywheel for warping. Check facing for wear, high spots, discoloration and smearing. Check stand bolts for thread damage, pilot bearing condition and of flywheel. STEP 7 Check pressure plate assembly for warping, crack, worn levers, discoloration, worn facing smearing or wearing on partial surface. STEP 8 Check throw-out bearing and associated components for wear, freedom of movement and general condition. Remember the clutch is a crucial part of a successful combination and is subjected to the worst possible abuse, therefore it is imperative that it is maintained regularly and properly for maximum performance.

PARTS AND SERVICECower offers complete service and repair on Crower clutches and Crower clutch products, as well as technical support. All Clutches and components returned for service and repair will be subject to a minimum tear-down and inspection charge. Used parts requiring machine work will be subject to a machining charge based on the prevailing rate necessary for the operation. All used parts not meeting Crower Clutch specifications will be replaced at the customer’s expense.

1. Counterweight per arm____ grams. Total grams: ____ 2. Static springs, number of turns____ grams. Total static ___ 3. Clutch release clearance___/___ with pedal stop. Typically .100 to.150 4. Your spring chart number is:_____

RECOMMENDED STARTING POINT FOR YOUR APPLICATION