GMC T Series 1994 Repair Manual page 727

FOURTH CLUTCH ASSEMBLY
Figures 56 through 59
Tools Required:
J 38731 Fourth Clutch Seal Protectors and
Base
J 38882 A dapter Fourth Clutch Spring
Compressor
J 23327 Base, Bolt and Nut
|*y»| Disassemble
Figure 56
1. Snap ring (523).
2. Backing plate (524) and clutch plates (525 and
526). Four of each.
3. Install tools J 38882 and J 23327, and compress
spring retainer assembly.
4. Snap ring (533) and spring retainer assembly
(532).
5. Fourth clutch piston (528) and outer seal (527).
6. Housing (529) and inner seal (531).
f g | Clean
• All components.
| y | inspect
• 4th clutch housing orifice cup plug (530). Orifice
is open approximately 0.51 mm (0.020 inch).
Assemble
Figure 57
1. 4th clutch outer seal (527) onto piston (528) and
4th clutch inner seal (531) into housing (529).
2. Place seal protector J 38731-1 onto housing (529)
through small end.
3. Place seal protector J 38731-2 onto piston (528)
through large end.
4. Place spacer J 38731-3 inside of piston (528).
5. Place housing (529) on bench resting on piston
(528) and piston spacer.
6. Push and rotate down on housing (do not force)
until piston is through housing, exposing snap
ring groove.
7. Remove housing seal protector J 38731-1.
8. Place snap ring (533), spring and retainer
assembly (532) onto piston (528).
9. Compress spring and retainer assembly using
J 38882 Adapter and J 23327.
10. Install snap ring (533).
11. Remove tools.
12. Turn assembly over and install 4 of each clutch
plates (525 and 526) alternating steel and fiber
plates. Starting with steel first. Locate steel plate
index notch opposite 4th clutch bolt hole.
13. Backing plate (524) flat side down, notch location
same as steel plates and snap ring (523).
| V | Important
• Insure snap ring (523) is properly seated in
groove.
523 RING, SNAP (4TH CLUTCH)
524 PLATE, 4TH CLUTCH BACKING
525 PLATE ASSEMBLY, 4TH CLUTCH
526 PLATE, 4TH CLUTCH
527 SEAL, 4TH CLUTCH (INNER)
528 PISTON, 4TH CLUTCH
529 HOUSING, 4TH CLUTCH
530 PLUG, ORIFICE
531 SEAL, 4TH CLUTCH (OUTER)
532 SPRING GUIDE AND RETAINER ASSEMBLY, 4TH
CLUTCH
533 RING, SNAP (SPRING AND RETAINER ASSEMBLY 4TH
CLUTCH PISTON)
RH0151-4L80-E