DIESEL: INJ. PUMP RETAINER REPLACE - NEW RETAINER

Model and Year 1982-85 C,K,G,P - 10-30 WITH 6.2L DIESEL ENGINE

TO: ALL CHEVROLET DEALERS

A new governor weight retainer assembly, referred to as an "Elastomer Insert Drive" (EID) is available for 1982-85 model injection pumps. This drive mechanism consists of six viton rubber inserts in a self-contained drive mechanism. The assembly is interchangeable with the retainer assembly used on 1982-85 model 6.2L diesel injection pumps.

The new EID assembly offers improved durability and heat resistance, and should be used when the repair to 1982-85 pumps involves removal of the governor weight retainer assembly. Any technician trained to install a governor weight retainer ring can install an EID (the time allowance for the repair is unchanged).

NOTICE: Never clean or soak the EID in a caustic solution. If necessary to clean, use diesel fuel or calibrating fluid only.

It is imperative that pumps reworked with the EID assembly be identified to assist in future diagnosis if a pump problem is encountered. It is extremely difficult to tell the difference between the drives once they are installed in the pump. A metal tag with the letter "E" is supplied in the package. Install this metal tag under the cover screw on the right front cover of the pump. The tag should be placed between the flat washer and the star washer. The star washer should be next to the cover.

Pumps that are within the 12-month/12,000 mile warranty period that are sent to a Roosa Master Dealer will have the new EID installed UPON REQUEST. Roosa Master Dealers, in addition to the metal tag, will also stamp the body of the pump with the letter "E". This identification will be located on top of the wrench boss on the front of the pump.

PARTS INFORMATION:

Repair kits are available from either WDDGM or a Roosa Master Dealer.

WDDGM Part Number is 22529991.

* The rubber inserts are not interchangeable with the pellathane ring.

For other models and model year usage, refer to Chevrolet Dealer Service Bulletin 84-237 issue February, 1985.

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.