BROKEN FORWARD CLUTCH HOUSING REPLACEMENT INFORMATION THM350

Models Affected: 1982 THM 350 and THM 350C Automatic Transmission

CONDITION:

Fatigue of forward clutch housing resulting in no forward or reverse operation. See Illustration.

CAUSE:

Excessive pinion pin runout in the output carrier.

RECOMMENDED REPAIR:

Inspect for and replace all worn bushings, especially the input ring gear bushing, Group 4.158, Part Number 8641117.

Replace the broken forward clutch housing, Group 4.169, Part Number 360943. Output shaft can be pressed out of old housing and reused.

In making the above repairs, the output carrier, Group 4.175, Part Number 1250023 must be replaced to eliminate the possibility of a recurrence of this condition.

General Motors bulletins are intended for use by professional technicians, not a "do-it-yourselfer". They are written to inform those technicians of conditions that may occur on some vehicles, or to provide information that could assist in the proper service of a vehicle. Properly trained technicians have the equipment, tools, safety instructions and know-how to do a job properly and safely. If a condition is described, do not assume that the bulletin applies to your vehicle, or that your vehicle will have that condition. See a General Motors dealer servicing your brand of General Motors vehicle for information on whether your vehicle may benefit from the information.