Ford Ranger Maintaince And Repair Manual page 992

Use extreme caution when removing the piston seal; DO NOT scratch the caliper bore
7. Carefully loosen 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:
11. Lubricate and install the bleeder valve and cap.
12. Install the new seals into the caliper bore grooves, making sure they are not twisted.
13. Lubricate the piston bore.
14. Install the pistons and boots into the bores of the calipers and push to the bottom of the bores.
15. Use a suitable driving tool to seat the boots in the housing.
Use the proper size driving tool and a mallet to properly seal the boots in the caliper housing
16. Install the caliper in the vehicle.
17. Install the wheel and tire assembly, then carefully lower the vehicle.
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