A/C - Compressor Sealing Washer Usage

9215oldsmobile01

NUMBER: 92-T-12

CORP.REF.NO: 131212R

DATE: November 1991

SECTION: 1B


SUBJECT: AIR CONDITIONING COMPRESSOR SEALING WASHER USAGE


MODELS/YEAR: 1988-91 CUTLASS SUPREME AND ALL 1992
OLDSMOBILES WITH AIR CONDITIONING


There has been a redesign of the GM Harrison A/C compressor rear head and the mating face of the attaching hose assembly. The redesign eliminates the two "O" ring seals from the compressor, replacing them with two sealing washers added to the suctional discharge hose set. Each sealing washer consists of a metal washer with an integral molded rubber seal. See the illustrations on the back of this bulletin.

THE "O" RING AND SEALING WASHER DESIGNS ARE NOT INTERCHANGEABLE. The compressor design will determine which type of washer to use.





^ Use sealing washers on compressors with suction discharge ports having a flat sealing surface.
^ Use "O" ring seals on compressors with "O" ring grooves in the suction discharge port sealing surface.

A service compressor ordered from GMSPO may be of either design. If the compressor uses the sealing washers, the washers will be included with the service compressor.

Use of improper seals may result in damage to the seals and cause leaks.

Servicing Information:
Lubrication of sealing washers is neither required nor recommended. Follow the installation instructions included with the parts kits.

When using sealing washers, there will be an intentional "gap" between the compressor rear head and the air conditioning hose assembly block (suction discharge block assembly). Do not mistake this as a loose connection or a mis-assembled joint.

Parts Information:
Seal or Gasket - A/C Compressor Sealing Washer, Service Kits:

Part Number Application

2724576 All 1988-91 Cutlass Supreme.

2724577 All 1992 compressors with 5/8" suction port openings.

2724578 All 1992 compressors with 3/4" suction port opening.

Parts are currently available from GMSPO.