Engine - Revised Tightening Specifications

File In Section: 6 - Engine

Bulletin No.: 87-61-31

Date: October, 1998

SERVICE MANUAL UPDATE

Subject:
Section 6A - Revised Engine Mechanical and Fastener Tightening Specifications

Models:
1996-97 Buick LeSabre
1996-97 Oldsmobile Eighty Eight, LS, LSS, Regency
1996-97 Pontiac Bonneville with 3800 Engine (VINs K, 1 - RPOs L36, L67)

This bulletin is being issued to revise the following engine mechanical and fastener tightening specifications in Section 6A of the Service Manual:

ENGINE MECHANICAL SPECIFICATIONS

Cylinder Bore

Out of Round (Max.) 0.0254 mm 0.001 in.
Taper 0.0254 mm 0.001 in.

Camshaft

Journal
Diameter 47.655-46.858 mm 1.8462-1.8448 in.

FASTENER TIGHTENING SPECIFICATIONS

Ignition Control Module

ICM Assembly Nut 8 N.m 71 lb in.
ICM Bracket Bolt (VIN 1) 30 N.m 22 lb ft
ICM Bracket Nut (VIN K, 1) 50 N.m 37 lb ft
ICM Bracket Stud (VIN K) 17 N.m 13 lb ft