Driven Sprocket Support Assemble

Special Tools

• J 36850  Assembly Lubricant
• J 39694  Spring Compressor

For equivalent regional tools, refer to Special Tools .

Fig 1: View Of Inspection Areas On Oil Transfer Sleeve
Courtesy of GENERAL MOTORS COMPANY
1. Inspect the driven sprocket support (418) for the following:
   • Hub nicks, burrs, or damage
   • Plugged feed holes
   • Worn or damaged splines
   • Bushings for nicks, scratches, or wear
   • The checkball for movement
   • The seal ring grooves for damage
2. Inspect the oil transfer sleeve (419) for scoring or internal damage. If damaged replace the driven sprocket support (418).
Fig 2: Identifying Exhaust Valve Spring Inspection Points
Courtesy of GENERAL MOTORS COMPANY
3. Inspect the following parts for damage:
   • The third clutch exhaust valve (427)
   • The exhaust valve spring (425)
Fig 3: Locating Inspection Points On Sealing Rings & Scavenge Tube Seal
Courtesy of GENERAL MOTORS COMPANY
4. Inspect the two sealing rings (423) and the two oil rings (422). Replace any damaged rings.
5. Inspect the scavenge tube seal (53). If the seal is damaged, replace the seal.
Fig 4: View Of Second Clutch Piston And Seal Assembly
Courtesy of GENERAL MOTORS COMPANY
6. Inspect the second clutch piston and seal assembly (430). Inspect the second clutch spring and retainer assembly (428) for damage. Replace any damaged part.
CAUTION:

Do not roll the seals when installing the second clutch piston assembly (430), or damage may occur.

7. Install the second clutch piston assembly (430). Twist and push the piston simultaneously. Use a light coating of J 36850  assembly lubricantor equivalent.
Fig 5: Compressing Second Clutch Spring
Courtesy of GENERAL MOTORS COMPANY
8. Use the J 39694  spring compressorto compress the spring and retainer assembly (428).
9. Install the snap ring (429).
Fig 6: Locating Third Clutch Exhaust Valve, Spring, And Pin
Courtesy of GENERAL MOTORS COMPANY
10. Install the following parts:
    • The third clutch exhaust valve (427)
    • The third clutch exhaust valve spring (425)
    • The spring pin (424)
Fig 7: Blowing Air Into Driven Sprocket Support
Courtesy of GENERAL MOTORS COMPANY
11. Air check the second clutch piston by applying air through the driven sprocket support (418).
Fig 8: Identifying Driven Sprocket Support
Courtesy of GENERAL MOTORS COMPANY
12. Install the driven sprocket support (418-427) over the input shaft. When seated, the support will be flush with the case line surface.