Check front wheel bearing for looseness before face runout measurement. The control of the braking surface finish is necessary to avoid pulls and erratic performance. It will also help in extending pad life. B. REAR BRAKE MAINTAINANCE To maintain the efficiency of the brake system, preventive maintenance is essential and the following recommendations should be observed at the intervals stated. At specified interval remove the brake drums • and check the lining for wear. The linings should not be allowed to wear less than 1 mm from the shoe rim. At specified interval clean the back plate and • lubricate the tips of the shoe platforms and the moving parts of the adjuster. Keep the grease away from the shoe linings and all hydraulic parts. 1. BRAKE HOSES Replace Brake hoses at specified interval. 2. DRUM INSPECTION Inspect the drum for cleanliness. Check for crack, scores etc. Check braking surface for its wear by measuring the inside diameter. Whenever brake drums are removed, they should be thoroughly cleaned and inspected for cracks, scores, deep groove etc. Visual inspection of wheel cylinder for brake fluid leakage is to be performed. Drum to be discarded, if found cracked, scored badly or grooved. Do not to weld a cracked drum. It is unsafe and must be replaced. Brake drum inside dia. Standard Service limit 200 202 BRAKE (MR) 25
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