NIBRON COATED INPUT CARRIER THRUST WASHERS W/125-125C

MODELS AFFECTED: ALL 1980-88 VEHICLES EQUIPPED WITH A 125/125C (MD9) TRANSAXLE

BULLETIN COVERS

New Nibron coating for Batwing and Round Washers used on Input Carrier Pinions.

DATE OF PRODUCTION CHANGE (Figure 1)

Input Carriers with the new Nibron coated Pinion Washers were built into THM 125/125C transaxles starting with Julian Date 355 (December 21, 1987).

SERVICE ACTION

The Pinion Washers (Round and Batwing) cannot be serviced individually.

The Input Carrier Assembly should be inspected for:

Pinion Damage Pinion Tilt Pinion end play - use a feeler gage - end play range 0.24-0.69m (0.009" - 0.027")

If Pinion end play is not in this range a new input carrier should be installed.

When servicing a THM 125/125C transaxle and inspection of the Input Carrier reveals any of the Input Carrier Pinion Washers are worn and/or missing, a new input carrier must be installed. This Input Carrier with new Nibron coating may be used on all past models.

SERVICE PARTS INFORMATION

When ordering a new Input Carrier Assembly use the following part number:

Part No Description ------- ----------- 8631681 Input Carrier Assembly Complete

SERVICE MANUAL REFERENCE

Refer to service information on the Input Unit Parts contained in the THM 125/125C Unit Repair Section of the Service Manual.

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.