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Brake Pads or shoes may have used asbestos, a substance that has been classified as causing cancer; therefore, it is recommended not to blow clean the brake surface(s) with compressed air and not to inhale any dust on such surfaces at all; one should use brake cleaning fluid that is commercially available. Brake shoes must be checked every 6000 miles or when the wheels are off and, if the lining thickness is worn down to the backing plate or rivet by 1/32 inch (0.76mm) the shoes must be replaced in axle sets. For removal and installation, firstly, support the vehicle and then Assemble the wheel and tire, Assemble the
Brake Drum. Disconnect the shock absorbers, springs and the other parts, lessen the
Parking Brake Cable and see whether there are signs of wear or damage on the
Wheel Cylinder. Ensure that the adjuster screw and the springs are properly placed when reconnecting the components after cleaning and lubricating where necessary. Slight adjust the brake so that the diameter is correct, then install the brake drum and the wheel, check parking brake adjustment. If there are modifications, make sure that the parking brake levers are placed properly and that the inside diameter of the brake drum is measured and the diameter of the brake shoe is adjusted before the assembling and testing of the mechanism.