506 BRAKE SYSTEM 3. INSPECTION 3.1 VISUAL INSPECTION (a) Brake shoe/liner inspection: Before replacing or removing brake shoes, visually inspect the brake liner as follows: (i) Hoist the vehicle. (ii) Remove rubber/plastic plug frombrake back plate as shown by arrow. (iii) Through hole of back plate, visually check for thickness of brake shoe lining. If thickness is found less than specified wear limit, replace brake shoes with new one. (b) TMC inspection Check for cracked TMC casting or brake fluid around TMC. Leaks are indicated only if there is brake oil belowmin. level. Brake shoe inspection grommet TMCAssembly 2.3 PARKING BRAKE ADJUSTMENT : Before parking brake cable adjustment, confirm the following conditions: (i) Bleeding should be completed. (i.e. there should not be air trapped in the brake system) (ii) Confirmpedal travel by depressing the brake pedal for few times. (iii) Check the lining condition of the rear brake it should not have been worn out beyond limit. (iv) Parking brake lever has been pulled up a few times with about 20 kg force. After confirming all the above points start adjusting the parking brake as follows: (a) Keep the parking brake lever in “0th” notch position. (b) Ensure that wheels are free to rotate. (c) Start tightening parking brake adjustment nut (11± 3 mm from the threaded end) in such a way that by applying a force of 20 kg on the lever, travel should not exceed “5th” notch position. 1. Parking brake lever 2. Parking brake cable 3. Parking brake cable adjustment nut 1 2 2 3 “a” = 5 to 6 notches (When lever is pulled up at 20 - 25 kg force) (d) Put the parking brake lever in “0th” notch (e) Ensure that wheels are totally free to rotate without any wheel grabbing. NOTE: After adjustment check for dragging of rear brake drum. a
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