Assembly

1. Clamp caliper in soft jawed vise. Do not apply excessive vise pressure; caliper damage will result.
2. Immerse new piston seal in clean brake fluid, then install in piston bore groove.
3. Coat new piston boot with clean brake fluid, then position boot over piston and install piston in caliper bore. Apply uniform force when pressing piston into bore.
4. Position dust boot in caliper piston counterbore, then drive boot into counterbore using piston caliper boot installer tool No. C-4689 and handle tool No. C-4171, or equivalents.
5. Install guide pin sleeve bushings as follows:
a. Fold bushing in half lengthwise at solid middle section, then carefully insert bushing into caliper assembly.
b. Using fingers or a suitable soft dowel, unfold bushing to seat in caliper assembly. Ensure flanges are seated evenly on both sides of bushing hole.
6. Gently press guide pin sleeves through bushings until bushings seat in seal grooves, then ensure bushings and sleeves are installed properly by sliding each back and forth. Sleeves should slide easily and bushings should remain seated in grooves.
7. Install caliper as outlined under Brake Pad/Service and Repair.