FLUID LEAKS FROM OIL PUMP BODY NEW SEAL ASSY.&RETAINER AVAIL.

1982-86 PARISIENNE AND FIREBIRD MODELS WITH THM 700-R4 (MD8)

Date of Production Change: (Refer to Figure 1.) ------------------------- October 10, 1985, Julian Date 283, A new front pump seal assembly. January 6, 1986, Julian Date 006, A machined step in the oil pump body. February 11, 1986, Julian Date 042, A new front pump seal retainer.

Service Action:

To service a 1982-84 (before Julian Date 180) THM 700-R4 transmission, refer to the latest WDDGM Parts Catalog.

To service a 1984 (after Julian Date 180) through 1986 THM 700-R4 transmission use the pump body assembly. The new seal assembly and retainer are included with the pump body assembly or are available separately.

Service Parts Information: (Refer to Figure 2.) ------------------------- 8649950 Pump Body Assembly 8648394 Seal Assembly 8654491 Seal Retainer

Service Manual Reference:

Refer to the THM 700-R4 Automatic Transmission Repair table of contents for Oil Pump Assembly.

Service Notes: (Refer to Figure 3.) ------------- Because of the stepped bore in the oil pump body, the installation procedure and tool for the pump body bushing have been changed. For the revised installation procedure use the new Kent-Moore tool J 34196-12. The removal procedure is the same as outlined in 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.