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 255 of 319
TM 9-2520-238-34
REPAIR DIFFERENTIAL RIGHT ANGLE GEARBOX — Continued
0028 00
17. Without shim installed, place bearing housing (1) on gearbox housing (2). Secure with two cap screws (3) positioned
180 degrees apart. Tighten screws to 10-25 lb-in (2 N•m) torque. Use torque wrench (WP 0033 00, Item 39).
18. Place oil seal retainer (4) on bearing housing (1). Secure with four cap screws (5) spaced 90 degrees apart. Tighten
screws to 10-25 lb-in (2 N•m) torque. Use torque wrench (WP 0033 00, Item 39).
19. Measure and record gap between retainer (4) and bearing housing (1) at four equal places around retainer and determine
the average of these readings. Peel shim (6) to this thickness or to the next laminate thinner.
20. Remove four cap screws (5) and retainer (4) from bearing housing (1).
21. Lubricate new packing (7) with grease or petrolatum. Install packing on retainer (4).
22. Clean threads of eight cap screws (5). Apply light coat of antiseize compound to threads at installation.
23. Place peeled shim (6) and retainer (4) on bearing housing (1). Secure with eight new key washers (8) and cap screws (5).
Tighten screws to 252-300 lb-in (28-34 N•m) torque. Use torque wrench (WP 0033 00, Item 41). Do not bend tabs on
key washers at this time.
0028 00-13
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