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 872 of 1258

TM 9-2320-280-34

1 7 - 8 8 . 2

Change 1

1 7 - 1 9 . GEAR UNIT AND OUTPUT ASSEMBLIES REPAIR (4L80-E)

( C o n

t ’ d )

d.1. Assembly (1997-1998)

CAUTION

All transmission parts must be lubricated with clean transmission

fluid (Dexron

®

III) before assembly. Foreign material will cause

transmission damage.

NOT E

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

1.

Install roller clutch (10) in reaction drum (11).

2.

Install main shaft (3) into rear internal gear (2) with snapring (1).

3.

Install bearing and two races (7) on rear journal of rear internal gear (2). Retain races (7) with

petrolatum.

4

.

Install output carrier assembly (9) and output shaft (6) on internal gear (2). Secure with snapring (5).

NOT E

The metal thrust washer is installed on output shaft. The plastic

thrust washer is installed in output carrier.

5.

Install thrust washer (4) on output shaft (6) and retain with petrolatum. Seat tabs in pockets of

output shaft (6).

6.

Turn partially assembled gear unit over with main shaft (3) facing up.

7.

Install bearing and two races (8) on main shaft (3).

8.

Install plastic thrust washer (15) and reaction drum (11) on output carrier assembly (9). Mesh gears.

9.

Install sun gear (14), chamfered edge first, into reaction drum (11) and output carrier (9).

10.

Install long, splined end of sun gear shaft (13) in sun gear (14).

11.

Install bearing and two races (12) with longer lip race on reaction drum (11). Retain races (12) with

petrolatum.