17-7. FORWARD CLUTCH AND TURBINE SHAFT REPAIR (3L80) (Cont'd)
All transmission parts must be lubricated with clean transmission
fluid before assembly. Foreign material will cause transmission
For general assembly instructions, refer to para. 2-16.
Install clutch piston apply ring (3) in clutch piston (5).
Install air seal (7.1) on clutch housing (8). Be sure lip on air seal (7.1) faces up.
Install plain seal (6) and outer seal (7) on clutch piston (5). Ensure lips on seals (6) and (7)
face away from spring guides (4).
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.
Install clutch piston (5) in clutch housing (8).
Install sixteen release springs (2) and spring retainer (1) on clutch piston (5).
Place clutch housing (8) in press.
Using clutch spring compressor and clutch spring compressor adapter, compress spring retainer (1).
Install snapring (9) securing spring retainer (1) to clutch housing (8).
Install forward clutch hub thrust washer (13) on forward clutch hub (12) and retain with
Install clutch hub (12) in clutch housing (8).
Install five steel clutch plates (14) and five clutch disks (15) in clutch housing (8). Start with steel
clutch plate (14) then alternate clutch disks (15) and steel clutch plates (14).
Install direct clutch hub (11) in clutch housing (8) with snapring (10).
Install forward clutch housing (8) on oil pump (17).
Air pressure must not exceed 50 psi (345 kPa) when air checking
clutch piston, or injury to personnel or damage to equipment may
Direct clutch hub must move up and down freely when air
pressure is applied.
Apply air pressure to forward clutch oil passage (16) to check operation of clutch piston.