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 141 of 292

TM 9-2350-238-34-1

NOT E

To increase backlash, transfer shims

from shaft bearing housing to drive

gear bearing housing. To decreas e

backlash, transfer shims from driv e

gear bearing housing to shaft bearin g

housing. Each lamination of shim is

0.002 in. (0.005 cm) thick. Abou t

0.001 in. (0.003 cm) change in

backlash requires transfer of two

shim laminations .

28

Apply white enamel to four or five teeth o f

bevel gear set spiral gear (12) and bevel

gear set spiral pinion gear (23). Rotate

gear set shouldered shaft (13). Examin e

wear pattern on gear teeth. Wear patter n

should be about one half length and depth

of tooth and centered on tooth face (p

2-97). Correct backlash (step 27) if wear

pattern is not correct.

29

Remove three capscrews (21) and driv e

gear bearing housing (17). Using bearin g

cup replacer (item 14, appx E), install new

plain encased seal (27) with open lip

facing into drive gear bearing housing.

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