Rear Main Seal - Revised Installation Procedure

Number 83-I-125 Section 6B Date 08/83
Subject: REVISED REAR MAIN SEAL INSTALLATION PROCEDURE - 1982 AND 1983 4.3L V-6 DIESEL ENGINE (VIN CODE T) AND 5.7L DIESEL ENGINE (VIN CODE N)
The following is a revised rear main seal installation procedure for the engines listed above.

REAR MAIN SEAL INSTALLATION

1. Clean the seal groove in the block and/or cap as necessary.

2. After cleaning the groove, apply a THIN even coat, about two drops of bonding adhesive, GM part number 1052621, Loctite 414, Fel-Pro 361 (Mighty Seal), or equivalent over the entire seal surface of the groove.

3. WITHIN ONE (1) MINUTE, install the seal using Service Manual procedures. (After one (1) minute the adhesive begins to cure and loses its bonding ability.)

It is important to remember that most adhesives have a shelf life of about one (1) year. However, the adhesive is considered usable if it flows freely from the container.

The above procedure should also be used on all PAST model Oldsmobile manufactured engines which utilize a rope-type rear main seal.