TM-9-2320-280-34

TRUCK, UTILITY: M998 SERIES

TECHNICAL MANUAL; DIRECT SUPPORT AND GENERAL SUPPORT MAINTENANCE

JANUARY 1996

TM-9-2320-280-34 - Page 798 of 1258

TM 9-2320-280-34

17 - 6.

OIL PUMP REPAIR (3L80) (Cont ’d)

d

Assembly

CAUTION

All transmission parts must be lubricated with clean transmission

fluid before assembly. Foreign material will cause transmission

damage.

NOTE

For general assembly instructions, refer to para. 2-16.

1.

Install drive gear (5) and driven gear (7) in pump body (8) with reference marks and tangs (6) on

drive gear (5) aligned face up.

2.

Install pump cover (4) on pump body (8).

NOTE

See table 17-1 for proper location of capscrews.

3.

Align pump cover (4) and pump body (8) and install five capscrews (17).

Table 17-1. Capscrew location.

Capscrew A

5/16 X 18 X 1

Capscrew B

5/16 X 18 X 1-1/2

Capscrew C

5/16 X 18 X 1-3/4

4.

Install oil pump (18) into transmission case (16) and tighten five capscrews (17) to 18 lb-ft (24 N.m).

5.

Remove oil pump (18) from transmission case (16).

6.

Install regulator valve (15), spacer(s) (14), spring retainer (13), spring (12), boost valve (11), boost

valve bushing (10), and snapring (9) in pump cover (4).

7.

Install selective washer (3) and two oil ring seals (2) on pump cover (4). Ensure lap joints on oil ring

seals (2) are properly joined.

8.

Install O-ring seal (1) on pump cover (4).

9.

Apply sealing compound to outside diameter of oil seal (19).

10.

Using oil pump seal installer, install oil seal (19) in oil pump (18).

17-20