TM-9-2350-238-34-1

HULL AND RELATED COMPONENTS, RECOVERY VEHICLE, FULL TRACKED: LIGHT, ARMORED, M578

TECHNICAL MANUAL; DIRECT SUPPORT AND GENERAL SUPPORT MAINTENANCE MANUAL

MARCH 1994

TM-9-2350-238-34-1 - Page 110 of 292

TM 9-2350-238-34-1

2-39. MAINTENANCE OF AUXILIARY DRIVE ASSEMBLY (CONT) .

REASSEMBLY (CONT )

5

6

7

8

9

1 0

Install two new shims (7) and new preformed packing (8) on clutch drive (9).

Install clutch drive (9) into input drive (4) and secure with three evenly spaced jacking screws.

Remove plug (10). Insert bearing gage through hole and between large end of output gear

teeth while rotating gears by hand. Reverse rotation and remove bearing gage after it has

traveled through one tooth. Install plug .

Measure flattened portion of bearing gage to determine backlash measurement. Backlas h

should measure 0.005 to 0.006 in. (0.013 to 0.015 cm).

If backlash is not correct, remove clutch drive (9) and increase or decrease number of shims

(7).

NOT E

Approximately 0.001 in. (0.003 cm) backlash change requires 0.0016 in. (0.0041 cm)

shim change (one lamination) .

Repeat steps 6 thru 9 until proper backlash is obtained.

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