NO REVERSE/NEUTRAL-125/125C DELAYED REVERSE REPAIR PROC.

Some 1980 thru 1983 THM 125/125-C transaxles may exhibit a no reverse or neutral to reverse delayed engagement condition.

To correct these conditions, two changes in the low and reverse clutch assembly (Fig. 5) were introduced in late March 1983. The low and reverse piston assembly is being produced with a third design lip seal retainer (figure 1) and an oil displacement insert (figure 2) was added to the low and reverse clutch assembly. This insert displaces oil and quickens the apply of the low and reverse clutch.

When servicing any 1980 thru 1983 THM 125/125-C transaxle for a no reverse or a neutral to reverse delayed engagement, refer to the following chart:

Type of Low and Conditon Reverse Clutch Asm. Correction --------- ------------------- ---------- No reverse - Lip Seal Replace the low and re- Retainer has separated verse clutch assembly from the low and reverse First Design with Service Package piston assembly (Figure 3) #8653915. Also add the oil displacement insert (part number 8643490)

Neutral to Reverse First Design Replace the low and re- Delayed Engagement (Figure 3) verse clutch assembly with Service Package #8653915. Also add the oil displacement insert (part number 8643490)

No Reverse - Lip Seal Replace the second de- Retainer has separated sign low and reverse from low and reverse Second Design piston with a third piston assembly (Figure 4) design low and reverse piston (part no. 8653916)

Neutral to Reverse Second Design Add the oil displacement Delayed Engagement (Figure 4) insert (part No. 8643490) to the low and reverse clutch assembly

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.