GMC T Series 1994 Repair Manual page 729

502 SHAFT, TURBINE
504 HOUSING ASSEMBLY, OVERRUN CLUTCH
514 CARRIER ASSEMBLY, OVERDRIVE
522 RING, SNAP (TURBINE SHAFT/CARRIER)
_____________________________________________________ RH0154-4L80-E
Figure 59 Overdrive Unit Assembly
OVERRUN CLUTCH ASSEMBLY
F ig u re s 6 0 th ro u g h 6 3
Tools Required:
J 38729 Piston Seal Protector
J 8001 Dial Indicator Set
J 23327 Clutch Piston Compressor
J 38734 Adapter
|<$»| Disassemble
F ig u re 6 0
1. Snap ring (511).
2. Backing plate (510).
3. Clutch plates (508 and 509) (three steel and three
fiber).
4. Compress spring and retainer assembly (506)
using J 23327 and J 38734 adapter.
Snap ring (507).
5.
6. Remove tools.
Spring and retainer assembly (506).
7.
8. Piston (505).
505 PISTON ASSEMBLY, OVERRUN CLUTCH
506 SPRING AND RETAINER ASSEMBLY
507 RING, SNAP RETAINER
508 PLATE, OVERRUN CLUTCH
509 PLATE ASSEMBLY, OVERRUN CLUTCH
510 PLATE, OVERRUN CLUTCH BACKING
511 RING, SNAP
Figure 60 Overrun Clutch Assembly
p y | Clean
• All components.
• Piston (505) should not be cleaned with solvent.
| y | Inspect
1. Clutch plates (508 and 509) for:
Burning.
•
• Scoring.
• Raking.
• Pitting.
• Wear.
2. Spring and retainer assembly (506) for:
• Collapsed coils.
• Distortion.
RH0155-4L80-E