BRAKE SYSTEM 527 BRAKES FRONT BRAKE BACK PLATE Removal 1. Remove wheel(s) (Refer wheel removal procedure/ Wheels and tires group) 2. Attach a transparent (vinyl) bleed tube to the bleed screw having first removing its rubber dust cap. 3. Unscrew the bleed screw 1/2 to 3/4 turn and pump out the brake fluid in a suitable container by operating the brake pedal. Remove the bleed tube. 4. Disconnect the hydraulic brake line attached to wheel cylinder. 5. Remove the brake drum using brake drum puller. 6. Remove three mounting bolts and take out brake back plate along with brake shoes and wheel cylinder. 7. Remove front brake shoes and wheel cylinder. (Refer Front Brake Shoes and wheel cylinder removal procedure) and remove brake back plate. Before installation follow the procedure as given below: 1. Clean the back plate with kerosene or diesel. 2. Lubricate the tips of the shoes, the shoe platforms on the back plate and contact areas of the back plate. NOTE: Keep the grease away from the shoe linings and all hydraulic parts. Installation 1. Install brake shoes and wheel cylinder on back plate assembly. (Refer front brake shoes and wheel cylinder installation procedure) 2. Mount back plate assembly on stub axle and tighten three bolts to specified torque. TIGHTENING TORQUE FOR BACK PLATE BOLTS = 2 - 2.5 Kg-m 3. Install brake drum (Refer Front brake drum installation procedure). 4. Connect brake hydraulic line to wheel cylinder assembly. 5. Perform brake bleeding. (Refer bleeding of hydraulic system) 6. Mount wheel (s) and tighten wheel mounting bolts to specified torque. TIGHTENING TORQUE FOR WHEEL MOUNTING BOLTS = 8 - 8.3 Kg-m 7. Remove supports and lower vehicle.
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