BRAKES 25 FITTING SHOES ASSEMBLING Lightly smear the following parts with special grease as given. Keep the grease away from the shoe linings and all hydraulic parts. 1. Tips of new shoes - High melting point grease. 2. Hand brake strut slots - Graphite grease. 3. Adjuster Pushrod Threads - Mineral oil base grease. Note: When new shoe is fitted, ensure to fit new shoe return springs also. Always fit new shoes in pairs to both the sides of the vehicle. (RLH and RRH sides) Do not polish lining with sand paper or emery paper. If lining is polished with sand paper or emery paper, hard particles of sand paper will be deposited in the lining resulting in damage of drum surface. Brake Lining Standard Service Limit Lining Thickness above the rim 5.5 mm 1.0 mm Note: The cable should just be tight without pulling the hand brake lever from the 'fully off' position. Ensure that the shoe linings (3 & 4) are free from oil and grease. During servicing of shoes/replacement, the brake dia. overshoes should be set to 253.2 to 253.6 mm by adjusting the ratchet. This is to have minimum clearance between shoes and drum. Clean the wheel mounting face on the drum with a wire brush and wipe the inside with a clean rag. Note: If the drum looks poor in condition, or is scored inside where the brake shoes contact, fit a new drum. Offer the drum to the brake and adjust the length of the adjuster until it is only just possible to fit the drum over the brake shoes. Check the pawl is in contact with the adjuster nut on the adjuster and fit the drum. Repeat procedure with the opposite rear brake and operate the foot brake through its full stroke 10 to 20 times. Check the movement of the hand brake and road test the vehicle. WHEEL CYLINDER SERVICING OVERHAULING THE WHEEL CYLINDER Wheel cylinder should be overhauled as per recommended service schedule. REMOVAL OF WHEEL CYLINDER (REAR) When removing or servicing wheel cylinders, it is necessary to drain the brake fluid from the system and remove the brake shoes. Attach a transparent (Vinyl) bleed tube to the bleed screw, having first removed its rubber dust cover. Unscrew the bleed screw 1/2 to 3/4 turn and pump out the fluid into a suitable container by operating the brake pedal. Remove the bleed tube. Remove the brake shoes as explained under “Removal of Shoes”. Remove the coupling nut from the feed port. Remove the wheel cylinder from the wheel cylinder mounting bolts and take out the wheel cylinder from the back plate.
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