REMOVAL & INSTALLATION
With Sliding Caliper
See Figure 1
- Raise and safely support the vehicle.
- Remove the wheel and tire assembly.
- Remove the caliper from the spindle and rotor, but do not disconnect the brake hose. Suspend the caliper inside the fender housing with a length of wire. Do not let the caliper hang by the brake hose.
- Remove the grease cap from the hub and remove the cotter pin, nut retainer and adjusting nut.
- Grasp the hub/rotor assembly and pull it out far enough to loosen the washer and outer wheel bearing. Push the hub/rotor assembly back onto the spindle, then remove the washer and outer wheel bearing.
- Remove the hub/rotor assembly from the spindle.
- Inspect the rotor for scoring and wear. Replace or machine as necessary. If machining, observe the minimum thickness specification.
- If the rotor is being replaced, remove the protective coating from the new rotor with brake cleaner. Pack a new set of bearings with high-temperature wheel bearing grease and install the inner roller bearing in the inner cup. Pack grease lightly between the lips of a new seal and install the seal, using a seal installer.
- If the original rotor is being installed, make sure the grease in the hub is clean and adequate, the inner bearing and grease seal are lubricated and in good condition, and the rotor braking surfaces are clean.
- Install the hub/rotor assembly on the spindle. Keep the assembly centered on the spindle to prevent damage to the grease seal or spindle threads.
- Install the outer wheel bearing, washer and adjusting nut. Adjust the wheel bearings according to the procedure in this section, then install the nut retainer, cotter pin and grease cap.
- Install the caliper and the wheel and tire assembly. Lower the vehicle.
- Apply the brake pedal several times before moving the vehicle, to position the brake pads.
- Raise the front of the car and support it with jackstands.
In order to remove the rotor, the caliper and anchor plate must be removed from the car.
- Remove the front wheel(s).
- Loosen, but do not remove, the upper anchor plate attaching bolt with a suitable rachet and socket.
- Remove the lower anchor plate attaching bolt.
When the caliper is removed from the car it must be wired out of the way of the rotor. Also, the brake pads will fall out of the caliper if they are not held in place when the caliper is removed. You will have to insert a small piece of wood or a folded piece of heavy cardboard between the shoes to hold them in place. Have a piece of wire and a piece of wood handy before you start the next step.
- Hold the caliper in place and remove the upper anchor plate attaching bolt.
- Slide the caliper and anchor plate assembly off the rotor, inserting the block of wood between the brake pads as they become visible above the rotor.
- When the anchor plate is clear of the rotor, wire it out of the way.
- Remove the dust cap from the rotor hub by either prying it off with a small prytool or pulling it off with a pair of slip-lock pliers.
- Remove the cotter pin and nut lock from the spindle.
- Loosen the bearing adjusting nut until it is at the end of the spindle.
- Grasp the rotor with a rag and pull it outward, push it inward.
- Remove the adjusting nut and the outer bearing.
- Remove the rotor from the spindle.
- Pack the inside of the rotor hub with a moderate amount of grease, between the bearing cups. Do not overload the hub with grease.
- Apply a small amount of grease to the spindle.
- Coat the lip of a new grease seal with a small amount of grease and position it on the rotor.
- Position the rotor on the spindle
- Install the outer bearing and washer on the spindle, inside the rotor hub.
- Install the bearing adjusting nut and tighten it to 17-25 inch lbs. (2-3 Nm) while spinning the rotor. This will seat the bearing.
- Back off the adjusting nut one half turn.
- Tighten the adjusting nut to 10-15 inch lbs. (1.1-1.7 Nm).
- Install the nut lock on the adjusting nut so two of the slots align with the holes in the spindle.
- Install a new cotter pin and bend the ends back so that they will not interfere with the dust cap.
- Install the dust cap.
- Install the anchor plate assembly and caliper. The torque specifications are: Upper anchor plate mounting bolt 125 ft. lbs. (169 Nm) and lower anchor plate mounting bolt 105 ft. lbs. (142 Nm). The caliper mounting bolts 25-35 ft. lbs. (34-47).
- Install the front tires.
- Raise the vehicle until the wheel and tire clear the floor. Place safety stands under the vehicle.
- Remove the wheel cover.
- Remove the wheel and tire from the hub and disc.
- Tighten the wheel bearing adjusting nut to eliminate end-play. Check to make sure the disc can still be rotated. Use a micrometer and measure the thickness of the rotor in several places. Rotor thickness should not vary more than 0.0008 in (0.02mm) between different places on the rotor. Refer to the specifications chart at the end of this section to determine allowable thickness for the rotor.
- Hand spin the disc and visually check. If the disc appears to be out of round or if it wobbles, it needs to be machined or replaced. When complete, loosen the wheel bearing adjusting nut and retighten to specifications, in order to prevent bearing damage.
- Visually check the disc for scoring. Minor scores can be removed with fine emery cloth. If it is excessively scored, it must be machined or replaced.
- Install the wheel and tire assembly and tighten the wheel lug nuts.
- Install the wheel cover. Remove the safety stands and lower the vehicle.