16 BRAKES Measure lining and metal pad together with a vernier and if the thickness is found less than 6 mm anywhere in the pad, it is time to replace them. Fig. 8 Caution: When removing the friction pads, mark them to ensure that the inboard and outboard pads will be reassembled in their respective places, if the pads have to be reused. Do not polish the pads with sand or emery paper as hard particles of sand or emery paper will deposit in pad & may damage disc. Note : If you find any difficulty in swinging the caliper up, after removing the sliding pin retaining bolt, it may be necessary to push the caliper piston, back along with the pad, using a screw driver, after loosening the bleed screw. But make sure to bleed the system if pedal is found spongy after replacing the pads. Always use genuine recommended pads for replacement. Do not contaminate the pad surface with grease or oil. INSPECTION : Thoroughly clean the disc. If it is scored bad enough, replacement of new pads alone do not give optimum performance and service l i fe. Hence fol low instructions as given to recondition the disc. Check for the condition of the rubber dust boots (7) of caliper pistons (6) & (4) of sliding pins (3). If there is no visible deterioration in piston rubber boots (7) and sliding pin rubber boot (4), new pads can be fitted. Check for the condition of the antirattle clips & if found ok the same clips can be reused after cleaning. INSTALLATION OF PADS : Insert both the pads in between the carrier and disc such that the friction material faces towards the disc. After inserting push both the pads (8) against the disc with both hands and swing down the caliper (1) and fit bottom retaining bolt. (2) Tighten retaining bolt (2) to a torque of 3.00 to 3.5 mkg. by holding the sliding pin. (3) Fig.9 Rotate the disc and make sure it is free to rotate. If it is not free to rotate, inspect and make sure that the pads are sitting square with the disc without any tilt. Follow same procedure for the other front wheel also. Fit wheels, jack down the vehicle & release the parking brake. Tighten wheel mounting big bolt to specified torque. CAUTION: Apply brake pedal couple of times with the engine started before taking the vehicle for a road test. Before applying an emergency brake, it is advisable to apply the brake gently several times at 50 km (30 miles) per hour to allow the brake pads to align. Heavy braking or prolonged braking should be avoided in the initial 100-150 km (60-90 miles) of run until the new pads are bedded. Fig. 8 Fig. 9
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