A/T - New Input Carrier Thrust Washers
88buick04Bulletin: 88-7125-6
Date: Mar., '88
Ref. No.: 88-107-7125
Corp. Ref. No.: 877122
SUBJECT: NEW INPUT CARRIER THRUST WASHERS
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.
FIGURE 1 - INPUT CARRIER WITH BATWING AND ROUND WASHERS:
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 0.24-0.69 mm (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.