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For 1990-2009 cars only
Makes 🢒 Buick 🢒 1991 🢒 Century 🢒 Bulletins 🢒 SERVICE MANUAL UPDATE SEC. 6A ROCKER COVER GASKET PROCEDURE

SERVICE MANUAL UPDATE SEC. 6A ROCKER COVER GASKET PROCEDURE

SUBJECT: SERVICE MANUAL UPDATE - SECTION 6A ENGINE MECHANICAL - VALVE COVER AND/OR GASKET REPLACEMENT PROCEDURE

MODELS AFFECTED: 1990 - '91 CENTURY MODELS EQUIPPED WITH 3300 V6 ENGINE

SERVICE MANUAL UPDATE

SECTION 6A6

The following Valve Cover and/or Gasket replacement procedure updates and replaces the current procedure found in the 1990-91 Century Service Manual - Section 6A6.

VALVE ROCKER COVER (RIGHT)

Remove or Disconnect

1. Negative battery cable 2. Serpentine belt 3. Power steering belt tensioner brace 4. Spark plug loom, wires and wire harness, set aside 5. Power steering pump retaining bolts to mounting bracket, slide pump forward 6. Retaining nuts and engine lift bracket assembly, set aside 7. Valve cover retaining bolts, valve cover and gasket

Assembly Tips

Clean the valve cover bolts of all thread locking adhesive. Apply thread lock compound, P/N 12345493 (currently available from GMSPO) or equivalent to bolt threads.

Install or Connect

1. New gasket Valve cover and retaining bolts

Tighten Bolts to 10 N.m (89 lbs. in.)

3. Engine lift bracket assembly and retaining nuts

Tighten Nuts to 30 N.m (22 lbs. ft.)

4. Power steering pump to mounting bracket and retaining bolts

Tighten Bolts to 27 N.m (20 lbs. ft.)

5. Spark plug wire harness, loom and wires to plugs 6. Power steering pump belt tensioner brace

Tighten Bolt to 26 N.m (19 lbs. ft.)

7. Serpentine belt 8. Negative battery cable


Object Number: 93356 Size: MF


Object Number: 94091 Size: MF

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.