TM-9-2320-280-34

TRUCK, UTILITY: M998 SERIES

TECHNICAL MANUAL; DIRECT SUPPORT AND GENERAL SUPPORT MAINTENANCE

JANUARY 1996
TM-9-2320-280-34

  TM-9-2320-280-34 - Page 884 of 1258

TM 9-2320-280-34
1 7 - 1 0 0
Change 1
1 7 - 2 2 . F O RWARD CLUTCH ASSEMBLY REPAIR (4L80-E)
This task covers:
a. Disassembly
c.
Inspection
b. Cleaning
d.
Assembly
NOT E
Work area should be well-ventilated, clean, and free from
blowing dirt and dust.
1.
Remove snapring (1) and direct clutch driving hub (2) from forward clutch housing (7).
2.
Remove forward clutch hub (4), thrust washer (3), and bearing washer (4.1) from direct clutch
driving hub (2).
3.
Remove five clutch plates (8), clutch plate assemblies (5), and dished clutch plate (6) (1995-1996
transmission only) from forward clutch housing (7).
4.
Using spring compressor, adapter, and clutch spring adapter, compress spring and retainer
assembly (10) and remove snapring (9) from forward clutch housing (7).
5.
Remove spring and retainer assembly (10) from forward clutch housing (7).
NOTE
Perform steps 6, 7, and 8 for 1995-1996 transmissions only.
6.
Remove piston (11) from forward clutch housing (7).
7.
Remove inner and outer seals (12) and (13) from piston (11). Discard seals (12) and (13).
8.
Remove center seal (14) from clutch housing (7). Discard center seal (14).
Clean all forward clutch components in accordance with para. 2-13.
NOT E
For general inspection instructions, refer to para. 2-14.
1.
Inspect five clutch plates (8) for signs of burning, scoring, or cracks. Replace any that are burned,
scored, or cracked.
c. Inspection
b. Cleaning
a. Disassembly
INITIAL SETUP:
Applicable Models
M997A2, M1025A2, M1035A2,
M1043A2, M1045A2, M1097A2, M1123
Tools
General mechanic’s tool kit:
automotive (Appendix G, Item 1)
Special Tools
Clutch compressor (Appendix G, Item 47)
Adapter (Appendix G, Item 48)
Seal protectors (Appendix G, Item 46)
Materials/Parts
Inner seal (Appendix E, Item 160)
Outer seal (Appendix E, Item 161)
Center seal (Appendix E, Item 157)
Materials/Parts (Cont’d)
Petrolatum (Appendix B, Item 38)
Transmission fluid (Appendix B, Item 24)
Manual References
TM 9-2320-280-24P
Equipment Condition
Transmission disassembled into subassemblies
(para. 17-14).
General Safety Instructions
Air pressure must not exceed 80 psi (552 kPa)
when air checking clutch piston.


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