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Home >> GMC >> 1983 >> Forward Control 5.7 M, Automatic, 475/M40 >> Repair and Diagnosis (Single Page) >> Brakes >> Mechanical - Hydraulic >> Disc & Drum >> Overhaul >> Drum Brake Shoe & Lining Replacement >> Installation

Drum Brake Shoe & Lining Replacement: Installation

  1. Lubricate fulcrum end of parking brake lever with brake lubricant. Attach lever to secondary shoe. Make sure lever moves free. Connect brake shoes together with adjuster spring.
  2. Place adjuster screw in position. Make sure spring does not contact starwheel portion of adjusting screw. Right hand thread adjusting screw should be on left side.
  3. Make sure starwheel lines up with hole in backing plate. Apply a thin coating of brake lubricant to contact surface on backing plate. Position brake shoes on backing plate.
  4. Primary shoe (short lining) is to front. Connect cable to parking brake lever. Install strut between shoes. Install actuator, return spring and actuator link. Install shoe hold down springs.
  5. Install both primary and secondary shoe springs. Measure inside diameter of brake drum with measuring gauge (J-21177). Expand brake shoes to dimension obtained on outside caliper portion of tool.
  6. Install brake drum and wheel assembly. Bleed system if any portion of hydraulic system was opened. Check fluid level in master cylinder and add as necessary.
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