GMC T Series 1994 Repair Manual page 730

3. Piston (505) for:
• Cracks.
• Cut seal.
4. Housing (504) for:
• Wear.
• Open lube holes.
• Damaged thrust faces.
FE| Assemble
Figures 61 and 63
1. Piston seal protector J 38729 into housing (504).
2. Piston and seal assembly (505) into housing (504)
while rotating.
NOTE:
Piston must be kept level while rotating.
3. Compress spring and retainer assembly (506)
(springs facing down) using J 23327 and J 38734.
4. Place snap ring (507) on housing (504).
5. Clutch plates (508 and 509), 3 of each, backing
plate (510).
6. Snap ring (511).
|^j|| Measure
Figure 62
1. Feeler gage between backing plate and snap ring.
2. Clearance should be between 0.838 to 2.38 mm
(0.033 to 0.094 inch.)
A GAGE, FEELER
504 HOUSING ASSEMBLY, OVERRUN CLUTCH
510 PLATE, OVERRUN CLUTCH BACKING
511
RING, SNAP
Figure 62 Measuring Overrun Clutch Piston Travel
504 HOUSING ASSEMBLY, OVERRUN CLUTCH
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
RH0157-4L80-E
RH0158-4L80-E