Brakes - Drum Adjustment Hole Plug Removal
88pontiac13Bulletin Number: 88-5-4A
Reference Number: 835006R
Publish Date: 8/88
Subject: BRAKE DRUM ADJUSTMENT HOLE PLUG REMOVAL
Models
Affected: 1987-88 6000, SUNBIRD AND GRAND AM
"This bulletin is being revised to add the Sunbird and Grand Am models and an additional step to the service procedure."
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 o'clock or on the right hand drum at 3:00 o'clock 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 Sunbird/Grand Am Service Manual).
Warranty Information
Labor Operation: T1318
Labor Time : 0.3 Hours