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 814 of 1258
TM 9-2320-280-34
17-10.
GEAR UNIT REPAIR (3L80)
This task covers:
a.
Disassembly
b. Inspection
b.
Cleaning
d.
Assembly
INITIAL SETUP:
Applicable Models
Materials/Parts
All vehicles except: M997A2, M1025A2,
Petrolatum (Appendix B, Itein 38)
M1035A2, M1043A2, M1045A2, M1097A2
Transmission fluid (Appendix B, Item 23)
Tools
Manual References
General mechanic's tool kit:
TM 9-2320-280-24P
automotive (Appendix G, Item 1)
Equipment Condition
Special Tools
Transmission disassembled into subassemblies
Driver handle (Appendix G, Item 34)
(para. 17-3).
Bushing service set (Appendix G, Item 33)
Slide hammer adapter (Appendix G, Item 32)
Maintenance Level
Gear unit holding tool (Appendix G, Item 31)
General support
NOTE
Work area should be well ventilated, clean, and free from blowing
dirt and dust.
a. Disassembly
1.
Remove roller clutch (1) from reaction carrier (2).
2.
Remove reaction carrier (2) from output carrier (8)
NOTE
Keep all thrust bearings and races together as sets.
3.
Remove race (3), sun gear thrust bearing (9), and race (3) from sun gear shaft (4). Tag thrust
bearing (9) and races (3) for assembly.
4.
Remove sun gear shaft (4), sun gear (5), front internal gear ring (6), and reaction carrier thrust
washer (7) from output carrier (8).
5.
Turn output carrier (8) over.
6.
Remove snapring (11) from output shaft (12) and output carrier (8).
7.
Remove case thrust washer (10) and output shaft (12) from output carrier (8).
8.
Remove two races (13) and output shaft thrust bearing (18) from rear internal gear (14). Tag thrust
bearing (18) and races (13) for assembly.
9.
Remove rear internal gear (14) and mainshaft (15) from output carrier (8).
10.
Remove two races (16) and rear internal gear thrust bearing (17) from output carrier (8). Tag thrust
bearing (17) and races (16) for assembly.
11.
Remove snapring (19) and mainshaft (15) from rear internal gear (14).
b. Cleaning
Clean all gear unit components in accordance with para. 2-13.
17-36
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