The rear brakes you need a 3/8 standard wrench to open two bolts retaining the caliper. The piston caliper requires a special tool to "wind " it or screw it back in order to install the new brake pads. DO NOT PRESS THE CALIPER PISTON BACK. You have to "screw" or rotate it. The rear brakes you need a 3/8 standard wrench to open two bolts retaining the caliper. The piston caliper requires a special tool to "wind " it or screw it back in order to install the new brake pads. DO NOT PRESS THE CALIPER PISTON BACK. You have to "screw" or rotate it.
There is a specialty tool for this procedure. There is a metal plate that fits on the piston, then a clamp for the back of the caliper. Turning a screw will pull in the caliper. Opening the bleeder valve may be necessary.
The proper method is how it is described originally below with the removal of the cap on the back of the caliper and turning in the Allen screw which retracts the E-brake adjuster inside the caliper. There are some cars where you rotate the piston itself into the caliper, if you have that type of caliper you need a cheap tool from the parts store which has pins that locate in the holes in the piston and you put a socket on the other end to rotate it. If you use pliers on the caliper piston you will score it and screw up the seal.14yr ASE Certified Technician.AnswerThere is a small bolt in the center of the backside of the caliper. Remove that bolt and you will see a small Allen head screw inside it. Loosen that screw as you apply moderate pressure to the front of the piston.
If it is the front brake use a "C" clamp to retract piston If it is the rear and the parking brake is used by this caliper piston is threaded and a special tool (not expensive) available at Sears or auto parts to "screw" piston into caliper body
There's a little screw on the side of the caliper with a whole in the top of it. Loosen that a little bit and you should just be able to push in the caliper. They make a tool which is basically a bar and a screw so the bar pushes on the mounting part of the caliper and the screw pushes on the caliper piston.
be sure to purcahse the tool to "screw" the caliper piston in. If you try to push the piston in on rear disc brakes you will damange the caliper.
The rear brake caliper on the G6 has a screw-type piston setup. The piston must be screwed back down into seated position, not pressed. Special caliper screw-in tools are available at local auto part stores and tool supply centers. Better kits will come with several size fittings for several caliper sizes.
screw it in turn the piston clockwise and screw it in , only for rear brakes
Up to about 1999, no. Only needed a large C clamp to push the piston back in the cylinger. After 2000 some rear brakes have the the screw type piston which requires you to un-screw the caliper back to the un-used pad position.
there are 2 ways on is with the C- Clamp. when tightening the clamp loosen the bleeder valve. the second is have to use the caliper tool to screw in the piston email@example.com
There is NO adjustment screw ANY where on the caliper. When putting new pads in, the caliper piston must be pushed in so it fits over the new pads.
The piston in the rear caliper on the 2008 Grand Caravan is the "screw in" type. A special tool is required to do the job.
Use a "c" clamp (front) to slide piston into caliper body Rear piston is threaded and requires a special tool to screw piston into caliper body Tool not expensive and available at Sears or auto parts
You twist it in. use a big screw driver or big flat object to screw it in counter clockwise. You will see a big slit in the piston to do this
The piston doesn't twist it's way out. There is a ratchet screw adjustment that takes up the slack behind the piston. Screwing the piston back in resets the adjustment.
loosen the bleeder screw and use a c-clamp to depress the caliper. some technicians like to use a thin piece of wood to guide the caliper in evenly, but if you have the screw part of the c-clamp in the center of the piston you should be fine
They screw in. Unlike the front where you can press them in. There is a special tool that looks like a block and goes over the piston and sets in the groove on the piston. Screw in to press in piston. Be careful if you use pliers to screw inward. You can rip the rubber.
did you try to loosen the bleeder screw before using the c clamps You have to turn the piston clockwise in order for it to go back into the caliper.
Have noticed that Ford still uses the screw style pistons on the rear calipers. To retract the piston use either a caliper/piston tool or a set of needle nose pliers. Turn the piston clockwise to get it back in but take note of the position of the grooves as they normally need to align so that a imaginary straight line through the grooves points to the center of the caliper.
You can get a caliper piston compressor tool at most autoparts supply stores. Some even loan them for free if you buy your parts from them. Another option I've used is a thin piece of plywood [to protect the face of the piston] combined with a "C" clamp to press the piston back into the caliper. Usually, once the piston is fully returned into the caliper, the clamp and plywood can be removed without the piston moving back out. If it does, then recompress it, and just slightly "crack" open the bleeder screw [only momentarily to relieve the hydraulic pressure]. Then the piston should remain fully inside the caliper after the clamping pressure is removed. Good luck.
Use a C clamp that carpenters use to hold pieces of wood together. Put the solid part of the clamp on the back of the caliper and the screw part inside the piston and tighten the piston back into the bore.
Buy a small universal piston retractor from an auto supply shop (square in shape with strange different shapes coming out of it) find the correct side of the tool, the one that best fits the grooves on the piston. Attach the piston retractor tool to your ratchet Rotate the piston back into the caliper as you would with a bolt or screw.
If rear brake caliper is used for emergency brakes also - piston is threaded and requires a special tool (not expensive available at Sears or auto parts) to screw into caliper housing
When you are changing disc brake pads, you should use one of the old pads and a large clamp to compress the piston immediately after removing the caliper. This helps to prevent air from entering the brake lines.Use caution when positioning the clamp so that it does not put any pressure on the brake hose, bleeder valve, or anything other than the piston housing.If the piston is difficult to compress, you may have a frozen caliper and/or a leaky brake hose.
there are two ways caliper pistons are made, one you can just use a c-clamp to push the piston back into the caliper; the other piston type must be screwed into the caliper with a special tool (inexpensive and readily available at your local auto parts store), but i must warn you, this "screw type" is very annoying to deal with, sometimes you have to start screwing it in with a pair of channel lock pliers b/c the tool wont fit in the caliper until the piston is most of the way back into the caliper, but be careful not to scar the outside of the piston and not to break or tear the seal