Overhaul

To Disassemble:

1. Remove the caliper from the vehicle and place on a clean workbench.

   WARNING
   NEVER place your fingers in front of the pistons in an attempt to catch or protect the pistons when applying compressed air. This could result in personal injury!

   NOTE: Depending upon the vehicle, there are two different procedures to remove the piston from the caliper. Refer to the brake pad replacement procedure to make sure you have the correct procedure for your vehicle.

2. The first procedure is as follows:
   1. Stuff a shop towel or a block of wood into the caliper to catch the piston.
   2. Remove the caliper piston using compressed air applied into the caliper inlet hole. Inspect the piston for scoring, nicks, corrosion and/or worn or damaged chrome plating. The piston must be replaced if any of these conditions are found.

   Using compressed air to remove piston

   Removing piston from caliper bore

3. For the second procedure, you must rotate the piston to retract it from the caliper.
4. If equipped, remove the anti-rattle clip.

   Removing anti-rattle clip

5. Use a pry tool to remove the caliper boot, being careful not to scratch the housing bore.

   Prying edge of boot

   Removing boot from caliper

6. Remove the piston seals from the groove in the caliper bore.

   Removing piston seal

7. Carefully remove the brake bleeder valve cap and valve from the caliper housing.
8. Inspect the caliper bores, pistons and mounting threads for scoring or excessive wear.
9. Use crocus cloth to polish out light corrosion from the piston and bore.
10. Clean all parts with denatured alcohol and dry with compressed air.

To Assemble:

1. Lubricate and install the bleeder valve and cap.
2. Install the new seals into the caliper bore grooves, making sure they are not twisted.
3. Lubricate the piston bore.
4. Install the pistons and boots into the bores of the calipers and push to the bottom of the bores.
5. Use a suitable installer to seat the boots in the housing.

   Installing boot

6. Install the caliper in the vehicle.
7. Install the wheel and tire assembly, then carefully lower the vehicle.
8. Properly bleed the brake system.