Diesel Engine - Service and Component Updates
Bulletin No. T 83-118File In Group 6A
Number 42
Date Aug. '83
5.7L DIESEL ENGINE UPDATE
1. CYLINDER HEAD REPLACEMENT - GM - GOODWRENCH 5.7L DIESEL ENGINE
Two new cylinder heads have been released for servicing the GM-Goodwrench 5.7L diesel engine. The new cylinder heads (P/N 22523637 and P/N 22523638), refer to DSIB 83-I-26, have different dowel pin locations than the cylinder heads previously released.
The previously released cylinder heads may be used on the 5.7L GM-Goodwrench diesel engine by installing the dowel pins in the correct dowel pin holes in the block to match the dowel pin holes in the cylinder heads. DO NOT install the cylinder heads without the dowel pins.
2. REAR MAIN SEAL INSTALLATION - 5.7L DIESEL ENGINE
The following is a revised rear main seal installation procedure for all Cadillacs equipped with a 5.7L diesel engine.
1. Clean the seal groove in the block and/or cap as necessary.
2. Apply a THIN, even coat (about two drops) of bonding adhesive (P/N 1052621) or equivalent over the entire seal surface of the groove.
3. Within one minute, install the seal using the procedure listed in the 1983 Cadillac Service Information Manual, pages 6B1-21 and 6B1-22. (After one minute, the adhesive begins to cure and loses its bonding ability.)