NEW SPRING DOWEL CASE COVER PINS SERVICE PROCEDURE

TRANSMISSION APPLICATIONS: SUBJECT:

1989 THM 125/125C HYDRA-MATIC NEW SPRING DOWEL CASE COVER PINS 3T40 (MD9)

TRANSMISSION MODELS: VEHICLE APPLICATIONS:

ALL A,J,L,N & P CARS

Bulletin Covers: (Refer to Figure 1) ---------------- New Spring Dowel Case Cover Pins (101) for the Case Cover (401) to Case (15) that are hollow in design to prevent them coming out of the case while the Case Cover is removed during service and/or reassembly of any THM 125/125C/HYDRA-MATIC 3T40.

DATE OF PRODUCTION CHANGE:

The new Spring Dowel Case Cover Pins went into production November 14, 1988 (Julian Date 319).

SERVICE ACTION: (Refer to Figures 2-3) --------------- The new Pins can be used to service all past model THM 125/125C/HYDRA-MATIC 3T40 transaxles. Do not mix new style Spring Dowel Case Cover Pins with previous style Dowel Pins.

If removal of the old Pin is necessary use the following procedure:

1. Grasp the sides of Dowel Pin, twist and pull out of Case. (Figure 2)

2. Install the new pin by squeezing the Pin together and seating in the Case. (Figure 3)

SERVICE PARTS INFORMATION:

When ordering new Spring Dowel Case Cover Pins refer to the following part number:

Part No. Package Description -------- ------------------- 8665946 2 Pins, Spring Dowel

SERVICE MANUAL REFERENCE:

Whenever service to any THM 125/125C/HYDRA-MATIC 3T4o is necessary, refer to the Unit Repair Section of your 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.