50 BRAKES DISASSEMBLY (Ref. Fig.51) 1. Ensure that parking brake is in released condition. 2. Unscrew and loosen parking brake adjusting lock nut and spherical nut at rear end of front cable. 3. Take out front ends of rear cables from link by moving out cable end with button from recess provided in link. 4. Remove clips holding fronts ends of rear cables and rear end of front cable on the brackets pull out the cables and remove the cables from mounting brackets. 5. Disconnect electric connection from parking brake switch. 6. Unscrew the mounting screws of ratchet of parking brake unit inside cab. 7. Take out the front end of front cable from parking brake lever after removing split pin, spacer and clevis pin. Remove parking brake lever with ratchet. 8. Remove holder from front end sleeve of front cable. Remove front cable. 9. Only if necessary, dismantle the pawl, pawl rod, and lever from ratchet by removing split pin castle nut and bolt at, fulcrum. Remove split pin, shim and clevis pin holding pawl with lever. unscrew lock nut of knob on pawl rod. Remove knob, lock nut, spring and sleeve. Remove pawl rod with pawl. Push nut dowel sleeve with suitable punch and remove pawl. 10. Remove rear cable from the rear drum brakes by removing wheels and brake drums as explained for removal of rear brake shoes. 11. Remove the rear cable with sleeve by taking out the sleeve holders and the clip mounting screws. INSPECTION 1. Check front and rear cables for any damage. Replace the cable as an assembly if found damaged. 2. Check ratchet, pawl, lever, pawl rod and coil spring for wear/damage and replace defective parts. 3. Check other parts like plastic bushes, links etc. for damage and replace defective parts. ASSEMBLY Assemble all parts in reverse order of disassembly. Note: i. While assembling front cable, connect rear end of front cable last. Ensure that there is no twist in cable.
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