It helps re-fit to slide it back a fraction.
Remove wheels Loosen 2 caliper mounting bolts and remove Remove Rotor (if peel off type) Resecure caliper Remove brake pads Need to get special tool to retract piston into caliper Do not retract using "C" clamp these pistons have to screw back into calpier (Clockwise) After piston retracted totally install new brake pads and reverse procedure to install DO NOT MOVE VEHICLE UNTIL BRAKE IS PUMPED TO RESET PADS TO CALIPER
Loosen wheel bolts, jack car up and support properly, remove wheel. Ok there's 2 ways you can do it, the first way is to remove the wire clip on the outside of the calliper, undo and remove the 2 slider bolts, then using a screwdriver, push the piston back into the calliper and you should be able to remove part of the calliper that holds the pads inplace. The other way which i do is after removing the road wheel, undo and remove the 2 19mm bolts that hold the calliper onto the hub assembly, push the piston back in using the screwdriver and then remove the whole calliper, now as the calliper is off and away from the disc there is a big gap between the pads(where the disc sat) and it allows you to move each pad to the centre of the calliper and out. Easy. then fit the new ones and follow instructions in reverse remembering to torque up the road wheel bolts to something like 65Lb/ft.
After changing pads? - pump brake pedal to set pads against rotor To retract to change pads? If parking brake is not connected to this caliper - compress piston into caliper body with a "C" clamp - if parking brake is installed on this unit a special tool (not expensive) is required because piston is threaded Tool is available at Sears or auto parts ========================= If you're talking about the rear disk pads, they are adjusted using a small screw (hidden behind a nother screw) on the caliper which adjusts the parking brake. You need to turn this screw to back off the calipers in order to install the new pads. Since the calipers are threaded, no amount of pushing will retract them.
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.
you have to push the brake cylinder back into the caliper using a "C" clamp
Remove the wheels. Using an appropriate sized Allen wrench or specialty GM calliper wrench, remove the upper and lower calliper bolts. Lift the callipers aside and support them using something substantial enough to hold the weight off the hydraulic lines. Most K1500's have a retaining screw or flat spring-nut to keep tension on the rotor while the wheel is off. Remove the screw or carefully work the retainer off the wheel stud so that you do not break the retainer. After the retainer is removed the rotor should come off quite easily. If the rotor is rusted on it may require a little persuasion to get it to come free. Note that when re-installing the calliper it may be necessary to spread the callipers before you will be able to get the brake pads over the rotor. Use a block and clamp or some other method to retract the piston but be careful to not damage the brake pad surfaces.
On a B6 Passat with EPB (Electric Park Brake), this can only be done using a diagnostic tool such as VCDS or similar.
cheetahs cannot retract their claws.
Remove wheels Re-install 2 lug nuts to hold rotor in place Remove caliper mounting bolts Slide caliper off rotor Fully retract piston into caliper body using a "C" clamp Install new brake pads inner and outer Re-Install caliper PUMP BRAKE PEDAL TO SET PADS AGAINST ROTOR PRIOR TO MOVING VEHICLE
Remove wheels Re-Install 2 lug nuts to hold rotor in place Remove caliper mounting bolts Slide caliper off rotor Fully retract piston into caliper using "C" clamp Install inner and outer brake pads Re-Install caliper REMEMBER TO PUMP BRAKE PEDAL TO SET PADS AGAINST ROTOR PRIOR TO MOVING VEHICLE
I had the same problem about a week ago. What you do is use a type of tool similar to the fastning key of a angle grinder.Place the tool(key) in the grooves of the piston and turn clock wise while someone pushes the piston back using a any type of device that will assist you in pushing hard enough while turning (Help will be needed). The piston will move back on turn remember to apply presure while turning. Another option is a G-clamp or similar with jaws wide enough to go on the piston and a secure point on the calliper. Winding in the clamp will slowly push the piston back in.
Correct tool to use Brake Caliper Piston Rewind Tool A lot of pistons easily go back in using a lever or pair of large oil filter pliers just take care not to damage piston seals and not to damage the caliper surface.