Disassemble/Assemble

Fig. 3 Exploded View Of Toyota/GM Front Brake Caliper.:

Fig. 4 Caliper Piston Installation.:

DISASSEMBLE
1. Remove two caliper slide bushings, four dust boots and spacer collars, Fig. 3.
2. Pry out caliper dust boot retaining ring and remove dust boot.
3. Place clean shop towels in caliper web to protect piston, then apply compressed air to caliper fluid inlet to force piston from bore. Keep fingers clear of caliper web when removing piston. Use only enough air pressure to ease piston out of bore, or piston may be damaged.
4. Remove piston seal from caliper bore, taking care not to mar machined surface of caliper.
5. Remove bleeder valve.
6. Clean components with alcohol and wipe dry with clean, lint free shop towels. Blow out caliper body and fluid passages with clean, filtered compressed air.
7. Inspect caliper and piston for damage, distortion, excessive wear and pitting, and replace as needed.
8. Replace mounting bolts, collars and caliper slides if they are damaged or worn.

ASSEMBLE
1. Apply lithium soap base glycol grease to components shown in Fig. 4.
2. Install piston seal in caliper, ensuring seal is squarely seated in groove.
3. Press piston into bore, ensuring piston enters bore straight.
4. Seat piston dust boot in caliper groove, then install retaining ring.
5. Install 2 collars and 4 slide bushing dust boots, Fig. 3, rotating boots as they are pressed in to ensure they are fully seated.
6. Install slide bushings through dust boots, ensuring boots remain seated in caliper grooves.