Direct Clutch Assembly: Inspection
- Inspect direct clutch housing bushings for damage, cracking or scoring. Inspect composition plates, steel plates and backing plate for wear, burning or scoring. Inspect apply ring, retainer and release spring assembly for damage.
- Inspect direct clutch piston for distortion, cracks or damage. Inspect clutch housing for excessive wear. If there is intermediate band failure, inspect outer surface of direct clutch. See Fig 2.
- If removal is necessary, drive check ball capsule (toward direct clutch side of housing) from housing using a 1/4" drift. Install new capsule from direct clutch side of housing, and seat with a 1/4" drift.
- If intermediate band/direct clutch is burned, remove intermediate servo cover and gasket. Remove 3rd accumulator exhaust valve and spring. Inspect 3rd accumulator exhaust valve bore for presence of valve seat and excessive seat wear.
- Plug feed and release holes in bore with petroleum jelly. Install a dual-land 3rd accumulator exhaust valve. Ensure valve is centered in seat. Pour solvent into valve bore, and check for leakage on inside of case. Small amount of seepage is okay.
- If valve leaks, replace transmission case. If valve does not leak, remove check valve, and install new conical spring onto valve (small end first). Install valve with spring into bore. Replace servo gasket and cover.
Courtesy of GENERAL MOTORS CORP.
Courtesy of GENERAL MOTORS CORP.