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DIAGNOSIS AND TESTING - DRUM BRAKE To properly test the drum brake automatic adjuster, the aide of a helper inside the vehicle to (1) Raise the vehicle. (Refer to LUBRICATION & MAINTENANCE/HOISTING - STANDARD PROCE- (2) Remove the access plug from the rear adjust- ment slot in each brake support plate. (3) Insert a thin screwdriver in the adjustment slot and push back the adjustment lever. With the (4) Remove the screwdriver from the adjustment slot. (5) Watch the star wheel through the adjustment slot, while a helper applies the brake pedal. As the If the star wheel does not move as indicated, the brake drum needs to be removed and further inspec- (6) If the star wheel is operating properly, readjust the brakes. (Refer to 5 - BRAKES/HYDRAULIC/ME- PADS/SHOES - ADJUST- MENTS). (7) Reinstall the adjustment slot access plug. BRAKE LINES DESCRIPTION - BRAKE TUBES AND HOSES The brake tubes are steel with a corrosion-resis- tant nylon coating applied to the external surfaces. OPERATION - BRAKE TUBES AND HOSES The purpose of the brake tubes and flex hoses is to transfer brake fluid pressure, developed by the mas- INSPECTION - BRAKE TUBES AND HOSES Flexible rubber hose is used at both front and rear brakes. Inspection of brake hoses should be per- The steel brake tubing should be inspected period- ically for evidence of corrosion, physical damage or BRAKE PADS/SHOES - FRONT REMOVAL NOTE: Before proceeding, (Refer to 5 - BRAKES - (1) Raise the vehicle. (Refer to LUBRICATION & MAINTENANCE/HOISTING - STANDARD PROCE- NOTE: Perform Step 2 through Step 5 on each side (2) Remove the front tire and wheel assembly. (Fig. 19). Fig. 18 Drum Brakes 1 - DUST CAP 5 - 16 BRAKES - BASE PT HYDRAULIC/MECHANICAL (Continued) |