TM-9-2520-238-34

M113A1 FOV, M113A2 FOV, M548 AND M548A1

TECHNICAL MANUAL; DIRECT SUPPORT AND GENERAL SUPPORT MAINTENANCE MANUAL; RIGHT ANGLE DRIVE, COOLING FAN; GEARCASE, TRANSFER; DRIVE ASSEMBLY, FINAL; DIFFERENTIAL, STEERING CONTROL; BRAKE, SINGLE DISK; CYLINDER ASSEMBLY, HYDRAULIC BRAKE

TM-9-2520-238-34 - Page 128 of 319

TM 9-2520-238-34

REPLACE TRANSFER GEARCASE A, B, OR C WITH SERVICE SPARE TRANSFER

GEARCASE E — Continued

0018 00

DISASSEMBLY

CAUTION

Laminated shim and input bearing retainer are matched for bearing preload at initial assembly.

Retain shim and retainer with same gearcase. When replacing gearcase C, replace pulley

instead of retainer. Failure to comply may cause bearing failure.

NOTE

Steps 1 - 8 apply to service spare transfer gearcase E only. Steps 1 - 3 apply to removing pulley

for transfer gearcase C. When replacing gearcases A or B, start with Step 4.

1.

Straighten tabs on four key washers (1). Remove four cap screws (2), key washers, bearing retainer (3), packing (4), and

laminated shim (5) from housing cover (6). Retain retainer and laminated shim with gearcase. Discard key washers and

packing.

2.

Remove retaining ring (7) and two-grooved pulley (8) from retainer (3). Discard retaining ring.

3.

Remove encased oil seal (9) from retainer (3). Discard oil seal.

0018 00-2

Lifting or moving objects in excess of 70 pounds could injure you. Make sure to get an assistant

or use a lifting device to move heavy objects.

CAUTI

Take care to prevent damage to machined surfaces, gears, bearings, and other components

during maintenance activities.

O

WARNING

N