UPDATE-CRANKSHAFT BEARING & JOURNAL SPEC./ADDITIONAL SPECS. Buick Electra/Park Avenue 1989

MODELS AFFECTED: 1989 LESABRES AND ELECTRA/PARK AVENUE WITH 3800 (VIN CODE C) 1989 RIVIERA AND REATTA WITH 3800 (VIN CODE C)

Crankshaft bearing and journal specifications were omitted from the 1989 service manuals for LeSabre, Electra/Park Avenue and Riviera/Reatta. Specifications are as follows:

CONNECTING ROD BEARING

Journal O.D. in. 2.2487-2.2499 (mm) (57.117-57.147)

Run-out in. .0003 (mm) (.008)

Taper in. .0003 (mm) (.008)

Bearing to Journal in. .0003-.0026 Clearance (mm) .0076-.0711)

Side Clearance in. .003-.015 (mm) (.076-.381)

Connecting Rod in. 2.3738-2.3745 Large End Bore I.D. (mm) 60.295-60.312)

CRANKSHAFT MAIN BEARING

Journal O.D. in. 2.4988-2.4998 (mm) 63.470-63.495)

Journal Run-Out in. .0003 (mm) (.008)

Journal Taper in. .0003 (mm) (.008)

Bearing to Journal in. .0003-.0018 Clearance (m) (.008-.045)

End Play in. .003-.011 (mm) (.076-.279)

Main Bearing in. 2.688-2.687 Bore I.D. (mm) (68.275-68.250)

General Motors bulletins are intended for use by professional technicians, not a "do-it-yourselfer". They are written to inform those technicians of conditions that may occur on some vehicles, or to provide information that could assist in the proper service of a vehicle. Properly trained technicians have the equipment, tools, safety instructions and know-how to do a job properly and safely. If a condition is described, do not assume that the bulletin applies to your vehicle, or that your vehicle will have that condition. See a General Motors dealer servicing your brand of General Motors vehicle for information on whether your vehicle may benefit from the information.