This procedure applies to front and rear brake discs. First, use a wrench to slightly remove the wheel lug nuts, and mechanically lift the car and position jack stands firmly under it. To service the brake disc, first, you have to take off the wheel, and then, to secure the disc and prevent from falling, use two or three lug nuts; in case you have to work on the rear disc, unscrew the parking brake. Then, remove the
Brake Caliper while keeping the brake hose connected, suspending the caliper off to the side by a piece of wire; the torque plate should then be unbolted from its position on the steering knuckle, where there will be two bolts. Check the surface for score marks and damages; light scratch and slight groove which is normal but disc scoring beyond 0.039" needs disc removal, and refinishing. If pulsating is felt when the brake is applied, one must perform the disc run test wherein a dial indicator must be placed half an inch from the outer diameter of the disc where the maximum amount recorded by the indicator should not exceed the allowable amount. In any case, it is suggested to resurface the discs in order to enhance the surface finish and at the same time eliminate jerkiness of the brake pedal. The disc should not be machined to a thickness less than the minimum allowed thickness: this can be measured easily with a micrometer. To take off the disc simple undo the lug nuts that are used to secure the disc; on the other hand if the disc is tightly fixed you can thread on bolts on the provided holes and when you tighten one bolt the other should be loosened until the disc is out. For installation, locate the disc over four threaded studs, then fit the torque plate including the caliper, tighten the bolts in the torque plate to an appropriate torque. Last, in place the wheel, drop the car and over tighten the bolts to the exact required torque. Press down the brake pedal several times in order to contact the brake pads to the brake disc and do a much check on the brakes before operate the car.