The rear disc brake system in your Honda Accord is equipped with an actuator-style caliper that contains a mechanism that controls the parking brake system. Compressing the piston into the caliper, when replacing rear brake pads, requires a special tool available at most large auto parts chains. The average home mechanic should have no problem doing this with the proper tool, and it will only add a few minutes to the repair time.
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Things you need
- Caliper piston tool
- Wrench set
- Adjustable wrench
Select the caliper piston adaptor, supplied with the tool, that is the same diameter as the caliper piston. Snap the adaptor onto the square end of the tool. Turn the centre bolt of the tool counterclockwise until the tool fits into the caliper. Rotate the adaptor until the pins on its face engage with the slots in the face of the caliper piston then twist the large outer nut of the tool until the tool expands against the caliper housing.
Rotate the piston with the tool by turning the large nut counterclockwise with an adjustable wrench while turning the centre bolt of the tool clockwise with a 15mm wrench. This will expand the tool and force the piston into the caliper while simultaneously rotating the piston to screw it into the actuator.
Line up the slot in the face of the piston with the small pin on the back of the pad by using the tool to rotate the piston. There are four slots on the piston so you will only need to rotate the piston 1/4 turn to align the piston with the pad.