You will need to remove the cover from the brake fluid reservoir on the master cylinder. Then you'll need to use what is known as a C-clamp to drive the piston back in so you can replace the brake pads. Be sure you bleed the brake system and return the brake fluid reservoir cover.
A Caliper Reset Tool is a tool used to 'reset' the brake caliper piston on calipers with an integral handbrake system. The tool spins the piston while applying pressure to compress it enough to replace the old pads with newer thicker ones.
Yes, there is such a thing as twin-piston calipers.
Why you can't push the piston back.The majority of calipers that incorporate a hand brake mechanism have an adjuster inside which compensates for pad wear. Forcing the piston back can damage this adjuster. Ideally you should use a piston wind back tool - this rotates the piston and pushes it back at the same time.You can get away without this tool, but do NOT use grips on the hydraulic surface! Most handbrake calipers require you to rotate the piston clockwise, do this a turn at a time, then push piston back gently (if you apply the handbrake lever slightly by hand - you'll feel when you've taken up the play)Saab 9000, Volvo 480 and Mazda handbrake calipers have an hex key adjuster hidden behind a bung - use a 4mm hex key to wind/adjust pistons on these type of calipers.Isn't the internet a wonderful thing when we're stuck - Mrbrakes.
with a large pear of channel locks,or a caliper compressor
Yes. Brake caliper compression tool. Ratcheting calipers
It requires a special tool to twist the piston back into the caliper.
Each of the calipers is held in place by two bolts. Remove the bolts and then the caliper. If necessary you may need to retract the caliper piston using a screwdriver or large C-clamp.
the caliper piston turns clockwise to compress,the gm w-bodys are known for bad rear calipers. gmjim
The brake pads on a 2007 Volkswagen Passat are replaced by jacking the vehicle up, removing the wheels, and unbolting the calipers. The pads can then be removed from the calipers, the caliper piston compressed, and new pads installed.
The front calipers push in with a large clamp to pliers. The rear calipers require a special tool that twists the piston while pushing it in.
Push in the piston on the caliper with your hand or a vice grips to get more clearance.
There not like the front calipers where you put a c-clamp on the piston and squeeze them in, on the rear calipers you have to get a special tool from the parts store and as you push inward you have to turn them in.