Disassembly and Assembly
DISASSEMBLY1. Remove brake pads from caliper.
2. Drain brake fluid out of caliper.
3. Take a piece of wood and pad it with one-inch thickness of shop towels. Place this piece in the outboard pad side of the caliper in front of the piston.
Padding Piston:
This will cushion and protect caliper piston during removal.
4. Remove caliper piston with short bursts of low pressure compressed air. Direct air through fluid inlet port and ease piston out of bore.
CAUTION: Do not blow the piston out of the bore with sustained air pressure. This could result in a cracked piston. Use only enough air pressure to ease the piston out.
WARNING: NEVER ATTEMPT TO CATCH THE PISTON AS IT LEAVES THE BORE. THIS MAY RESULT IN PERSONAL INJURY.
Removing Dust Boot:
5. Remove caliper piston dust boot with suitable pry tool.
Remove Piston Seal:
6. Remove caliper piston seal with wood or plastic too. Do not use metal tools as they will scratch piston bore.
Slide Bushing And Boot:
7. Remove caliper mounting bolt bushings and boots.
ASSEMBLY
CAUTION: Dirt, oil, and solvents can damage caliper seals. Insure assembly area is clean and dry.
1. Lubricate caliper piston bore, new piston seal and piston with clean brake fluid.
2. Lubricate caliper bushings and interior of bushing boots with silicone grease.
Bushings And Boots Installation:
3. Install bushing boots in caliper, then insert bushing into boot and push bushing into place.
Seal Installation:
4. Install new piston seal into seal groove with finger.
Piston And Dust Boot:
5. Install new dust boot on caliper piston and seat boot in piston groove.
Caliper Piston Installation:
6. Press piston into caliper bore by hand, use a turn and push motion to work piston into seal.
7. Press caliper piston to bottom of bore.
8. Seat dust boot in caliper with Installer Tool C-4842 and Tool Handle C-4171 .
9. Replace caliper bleed screw if removed.