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 804 of 1258
TM 9-2320-280-34
17.8.
DIRECT CLUTCH AND INTERMEDIATE SPRAG REPAIR (3L80)
This task covers:
a.
Removal
b.
Installation
INITIAL SETUP:
Applicable Models
Materials/Parts (Cont'd)
All vehicles except: M997A2, M1025A2,
Outer piston seal (Appendix E, Item 130)
M1035A2, M1043A2, M1045A2, M1097A2
Center piston seal (Appendix E, Item 126)
Transmission fluid (Appendix B, Item 23)
Tools
General mechanic's tool kit:
Manual References
automotive (Appendix G, Item 1)
TM 9-2320-280-24P
Special Tools
Equipment Condition
Clutch spring compressor
Transmission disassembled into subassemblies
(Appendix G, Item 35)
(para. 17-3).
Clutch spring compressor adapter
(Appendix G. Item 36)
General Safety Instructions
Air pressure must not exceed 50 psi (345 kPa)
Materials/Parts
when air checking clutch piston.
Six composition clutch plates
(Appendix E, Item 134)
Maintenance Level
Inner piston seal (Appendix E, Item 127)
General support
NOTE
Work area should be well ventilated, clean, and free from blowing dirt and dust.
a. Disassembly
1.
Remove snapring (1), sprag retainer (2), outer race (3), bushing (4), sprag (5), and bushing (4) from
direct clutch housing (6).
2.
Remove snapring (7), backing plate (8), six composition clutch plates (10), and steel clutch plates (9)
from clutch housing (6). Discard composition clutch plates (10).
3.
Using press, clutch spring compressor, and clutch spring compressor adapter, compress spring
retainer (12).
4.
Remove snapring (11) securing spring retainer (12) to clutch housing (6).
NOTE
Keep direct clutch release springs separate from forward clutch release springs.
5.
Remove spring retainer (12), fourteen release springs (13), and clutch piston (15) from clutch
housing (6).
6.
Remove inner piston seal (16) and outer piston seal (17) from clutch piston (15). Discard seals (16) and (17).
7.
Remove center piston seal (18) from clutch housing (6). Discard seal (18).
8.
Remove clutch piston apply ring (14) from clutch piston (15).
b. Cleaning
Clean all direct clutch and intermediate sprag components in accordance with para. 2-13.
c. Inspection
NOTE
For general inspection instructions, refer to para. 2-14.
1.
Inspect clutch backing plate (8) and six steel clutch plates (9) for signs of burning, scoring, or cracks.
.
Replace any plate if burnt, scored, or cracked.
17-26
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