Service and repair of the brake caliper starts with boot removal using a screwdriver followed by the insertion of cloth between piston and caliper before piston extraction with compressed air while keeping fingers safe from harm. Proceed by removing brake cylinder piston seals with a screwdriver before moving onto the sliding pin and pin boot and sliding bushing while keeping the screwdriver tip taped. Insert the sliding pin featuring the sliding bushing into the lower section while placing the sliding pin alone into the upper part. The pad lining needs inspection through ruler measurement to check its thickness against standard 12.0 mm (0.472 inch) but should be replaced if it reaches minimum 1.0 mm (0.039 inch) or exhibits uneven wear. Use a micrometer on the disc after attaching it with the hub nuts to check its thickness. The standard disc dimension is 18.0 mm (0.709 inch) yet it should never drop below 16.0 mm (0.611 inch). Replace or grind the disc if it is below the minimum or presents scoring or uneven wear. Check disc runout using a dial indicator that measures 10 mm (0.39 inch) from the outside edge to ensure no more than 0.1 mm (0.0040 inch) maximum runout; if over this value exists then inspect bearing play and axle hub runout while performing required disc adjustment or grinding operations. Malevolence should be addressed by removing the torque plate and hub nuts followed by disc installation shifted by 1/5 of a turn and hub nut tightening to 103 Nm (1,050 kgf-cm, 76 ft. lbs.). The runout should be remeasured until minimum indicators drop below 0.1 mm (0.0040 inch) before disc replacement. The procedure ends with torque plate installation and tightening the 2 bolts to 103 Nm (1,050 kgf-cm, 76 ft. lbs.) followed by assembling everything backwards as disassembled while applying lithium soap base glycol grease to specified parts.