Disassembling Caliper

Fig. 2 Removing caliper piston:

Fig. 3 Exploded view of disc brake caliper assembly:

1. Remove plug from caliper inlet port and drain fluid from caliper housing.
2. Position caliper on block of wood, Fig. 2.
3. Slowly and carefully apply low pressure air to caliper inlet port until piston pops out.
4. If piston is jammed or cocked and will not pop out, release air pressure and tap sharply on end of piston with soft hammer or plastic or rubber mallet to straighten piston, then apply air pressure again to remove piston.
5. Remove boot from piston and seal from caliper cylinder bore, Fig. 3.