Front Timing Chain Cover - Removal and Reinstallation
86chevy13Number: 86-121
Section: 6A
Date: JULY, 1986
Subject: FRONT TIMING CHAIN COVER
REMOVAL AND REINSTALLATION
Model and Year: PASSENGER CARS AND TRUCKS 1986 MODELS WITH 4.3L (VIN CODE N OR Z) 5.0L (VIN CODE F,G,H. OR Y) 5.7L (VIN CODE 6,8,K,L OR M)
TO: ALL CHEVROLET DEALERS
The 1986 Service Manuals state that the front timing chain cover can be removed and reinstalled (R and R) without the removal of the oil pan or oil pan gasket. Due to a change in the oil pan gasket, the oil pan and gasket must now be removed in order to "R and R" the front timing chain cover. If the oil pan and gasket are not removed, it can result in an oil leak at the front of the oil pan.
Use the oil pan "R and R" procedures listed in the appropriate section of the 1986 Service Manual when removal of the front timing chain cover becomes necessary.