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Brakes - Drum Adjustment Hole Plug Removal

88buick18

Bulletin 88-5-8A

Date Sept., '88

Ref. No. 88-111A-5

Corp. Ref. No. 835006R
SUBJECT: BRAKE DRUM ADJUSTMENT HOLE PLUG REMOVAL

MODELS AFFECTED: 1987-88 CENTURYS 1987-88 SKYLARKS 1987 SOMERSETS

NOTICE: This bulletin is being revised to add the Somerset/Skylark carlines and an additional step to the service procedure. Please discard original bulletin 88-5-8. Date 4/88.


Some rear brake drum adjusting hole plugs cannot be removed using a punch because of insufficient die piercing. On drums where a punch will not work, the hole plug can be removed using the following procedure:

1. Remove the rear wheel and reinstall two lug nuts backwards to hold drum in place against rear wheel bearing.

2. Locate an accessible adjusting hole plug (select a plug not covered with a balance weight).

3. Position the adjuster hole plug on the left hand drum at 10:00 or on the right hand drum at 3:00 and set the park brake.

4. Prick punch four (4) spots within the hole plug outline.

5. Drill four (4) 6 mm (1/4 inch) diameter holes within the hole plug outline.

6. File the hole opening as necessary to insert a brake adjusting tool.

7. Install rubber adjusting hole cover (see part number on Page 5C2-2 of the 1988 Skylark/Skyhawk Service Manual).

WARRANTY INFORMATION

Labor Operation: T1318
Labor Time: 0.3 Hours
Trouble Code: 92