GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Oldsmobile 🢒 1998 🢒 LSS 🢒 Brakes 🢒 Drum Brakes 🢒 Brake Drum Replacement

Removal Procedure

    Important: While installing a new brake drum, do not refinish the braking surface, as it is already at the correct level of finish.

  1. Raise and suitably support the vehicle. Refer to Vehicle Lifting and Jacking in General Information.
  2. Mark the relationship of the wheel to the wheel studs in the bearing flange.
  3. Remove the wheel and the tire.
  4. Mark the relationship of the drum to the wheel studs in the bearing flange.

    5. Object Number: 142282 Size: SH

    Notice: Do not pry against the splash shield which surrounds the backing plate in an attempt to free the drum. This will bend the splash shield.

  5. Remove the brake drum. If the drum is difficult to remove, use the following procedure:
    6. 5.1. Make sure the parking brake is released.
    5.2. Back off the parking brake cable adjustment.
    5.3. Use a hammer and a small metal punch to bend in the backing plate knockout slug to provide access to the park brake lever.
    5.4. Insert the metal punch or a screwdriver through the hole and press in to push the park brake lever off its stop. This lets the shoe and linings retract slightly.
    5.5. Apply a small amount of penetrating oil around the drum pilot hole.

    Important: After the drum has been removed from the vehicle, be sure to remove the knockout slug, using pliers or vise grips. Then insert a rubber access hole plug (service part) into the hole to prevent dirt or contamination from entering the drum brake assembly.

  6. Before installing brake drum and wheel, adjust the following items:
    7. • The service brakes.
    • Refer to Drum Brake Adjustment .
    • The parking brake.
    • Refer to Park Brake Cable Inspection .

Installation Procedure

    Object Number: 142282 Size: SH
  1. Install the brake drum, aligning the marks made at the removal.
  2. Install the wheel and the tire, aligning the marks made at the removal.
  3. Lower the vehicle.

    4. Notice: Use the correct fastener in the correct location. Replacement fasteners must be the correct part number for that application. Fasteners requiring replacement or fasteners requiring the use of thread locking compound or sealant are identified in the service procedure. Do not use paints, lubricants, or corrosion inhibitors on fasteners or fastener joint surfaces unless specified. These coatings affect fastener torque and joint clamping force and may damage the fastener. Use the correct tightening sequence and specifications when installing fasteners in order to avoid damage to parts and systems.

  4. Tighten the wheel nuts.

    5. Tighten
    Tighten the wheel nuts to 140 N·m (100 lb ft).