I was replacing break rotors and just could not get one of the screws to loosen, so I asked my child to press breaks. I forgot I already took the breaks on one of the wheels and now the caliper is pressed all the way forward. I was trying to use a tool to press it back, like you would when you put new pads but it does not move back. What do I do? It's the front passenger wheel.
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Re: Break caliper pushed forward
You are talking about the piston being pushed out? #1. Put a piece of wood in the caliper and push the brake pedal again.. remove the piston all the way. clean the caliper bore, replace the seal(caliper rebuild kit usually really cheap) carefully reinstall the piston.. sounds like it is either "cocked and stuck or the caliper has a ring of rust at the top of the bore. either way clean and reinstall the piston. possibilty #2. Take a "C" Clamp and force the piston back in.. if you do this take an old pad and put it between the piston and clamp to protect the poston.
Testimonial: "I actually have a tool for pushing back the piston. I did it on the first wheel, but this seem to be too hard. In fact I can't turn the tool any more and the piston is still all the way in. At the beginning when I tried pushing it some of the break fluid dripped. I just don't want to make things worse. Shall I continue pushing. I don't see any rust. Everything looks quite clean."
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If it's been 10days, I hope you got your brakes together by now. Sorry I'm late.
I assume you are talking about retracting the pistons into the calipers, so you can get them over the rotor. If they don't go over the rotor, the piston almost certainly is not all the way in the caliper housing.
I usually do one side at a time.
Remove or loosen the cap on the brake master cylinder under the hood. This insures that when you press the piston back into the cylinder, that the brake fluid can flow back into the master cylinder.
If you have both sides apart, make sure you temporarily put one side back together or block one of the pistons with a stack of pads or wood to keep it from popping out.
The easiest way to push the piston back in is to use a C-clamp and one of the old brake pads. Place the pad on the piston, and clamp it with the C-clamp. Tighten until piston is back in.
No C-clamp? Put the old inner pad back on and slip the caliper over the rotor. You don't have to bolt it down, or maybe just start the bolts to keep the caliper from moving around. Use a large screw driver or pry bar in-between the old pad and rotor and pry the piston back in.
What you are feeling from the break pedal is that the rotors are warped a little bit. So, as the warped part of the rotor goes through the caliper its pushing the break pedal back in to your foot. Most break shops can turn your rotors for you ... the price of turning a rotor around me is about 15 dollars, plus the labor to take it off. 50 bucks should get your breaks nice and smooth again.
Remove brake caliper and then the three torx screws from factory rotor. (most replacement rotors omit the screw holes). Rotor will then pull off. If it is frozen in place, a couple of strikes to the rotor edges with a RUBBER mallett will usually break it loose.
Jack the van up, remove the tire. Then you will see the caliper. There will be 2 bolts that hold it on to the rotor. Remove the bolts and pry it off with a screw driver or what ever works. Then disconnect the break line from the caliper. After you get the new one use a c-clamp to press the piston down into the caliper and install the brake pads. Bolt the caliper back into place and install the line. Loosen up the bleed valve on the caliper 1/2 turn and have someone pump the breaks until no air bubbles come out. Once you have a smooth stream of brake fluid coming out the valve have that person pump once more and hold the pedal all the way to the floor. Then tighten the valve.
On the back ot the caliper ( holds Brake pads) there are two bolt or Screws ( usually allen heads) loosen those screws and remove them. pull off the caliper. check your rotor check for grooves and you might want to take them to get turned ( cleans the surface by taking a thin layer of metal off.
Using a C clamp or Disk brake pad tool carefully and slowly compress the piston back into the caliper....Slowly. Pace ne break pads in caliper and slide it back on to the rotor... replacing the bolts tighten them up...replace tire and you should be good to go. Remember to pump you breaks to get the pads to adjust will be soft at first. there should be no need to bleed the brakes.
on the rear calipers there is a 14m bolt on the back of the caliper beside the parking brake braket.
remove bolt on the inside there is a hex screw. as you turn it the piston gose in or out.
check calipers for damage.
When you replace the pads you have to retract the pistons into the bore. As the pads wear they stay extended from the brake caliper. The new thinkness of the pads will not allow the pads the slip over the rotors until you retract the pistons. Your pistons may be the type that have to be turned back into the bore.Good luck.