When replacing rear pads on actuating-type calipers, the piston must be kept from spinning as the C-clamp pushes the piston back into the caliper bore.

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Actuating-type calipers, often found in vehicles with parking brake mechanisms integrated into the caliper, require the piston to be rotated (not just pushed) back into the caliper bore. A special tool is typically used for this, not a C-clamp.

When Replacing Rear Pads on Actuating-Type Calipers, the Piston Must