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 806 of 1258

TM 9-2320-280-34
17-8.
DIRECT CLUTCH AND INTERMEDIATE SPRAG 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 clutch piston apply ring (3) in clutch piston (5).
2.
Install inner piston seal (6) and outer piston seal (7) on clutch piston (5). Ensure lips on piston
seals (6) and (8) face away from spring guides (4).
3.
Install center piston seal (8) on clutch housing (9). Be sure lip on piston seal (8) faces up.
NOTE
It may be necessary to use 0.015 in. (0.381 mm) feeler gauge to start
inner and outer clutch piston seals into clutch housing.
4.
Install clutch piston (5) in clutch housing (9).
5.
Install fourteen release springs (2) and spring retainer (1) on clutch piston (5).
6.
Using press, clutch spring compressor and clutch spring compressor adapter, compress spring
retainer (1).
7.
Install snapring (10) securing spring retainer (1) to clutch housing (9).
8.
Remove clutch spring compressor and clutch spring compressor adapter from clutch housing (9).
9.
Install six steel clutch plates (13) and six composition clutch plates (14) in clutch housing (9). Start
_->
with steel clutch plate (13) then alternate composition clutch plates (14) and steel clutch plates (13).
10.
Install clutch backing plate (12) on clutch housing (9) with snapring (11).
11.
Install sprag bushing (20) cup side up over inner sprag race (21).
12.
Install sprag (19) into outer sprag race (17).
CAUTION
Outer sprag race should not turn counterclockwise after installa-
tion or transmission damage will result.
NOTE
If outer sprag race turns counterclockswise, sprag is installed
upside down.
13.
Install sprag (19) and outer sprag race (17) over inner sprag race (21) with shoulder on inner cage of
sprag (19) facing down and rotate until seated on lower sprag bushing (20).
14.
Install upper sprag bushing (18) cup side down into outer sprag race (17).
15.
Install sprag retainer (16) on clutch housing (9) with snapring (15).
16.
Place clutch housing (9) on center support (23).
17-28


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