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

NEW INPUT CARRIER THRUST WASHERS 1988 THM 125/125C (MD9)

MODELS AFFECTED 6000, SUNBIRD,GRAND AM --------------- AND FIERO MODELS

BULLETIN COVERS:

There is a 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 0.24-0.69mm (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 Number 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.