Brake caliper piston leaking

I was changing my brake pads on the rear finished one side and forgot the mount the caliper back on. So i went and started the truck pumped the brakes to check the job. Turned off the truck walked back to the rear passenger and saw i forgot to mount the caliper back on. now the caliper piston is popped and and loose and leaking. now what are my options? I really messed up what needs to be replaced and how much will it cost.?

 

I talked to a person that is a mechanic. he said just swap them out with new ones. then after bleed the brakes is that correct. I had a question about the brake line, just unbolt and reconnect the new caliper to it? Then bleed the system.

 

Yup. It’s all pretty straightforward. Few videos on YouTube too. Just be careful of the metal lines. Good quality brake fluid is a plus.

 

Thank you TemujinNomad. HAPPY HOLIDAYS. I think you are important and honest for the response much appreciated.

 

Did you try to slide the piston back into the caliper body? I've rebuilt calipers several times and had no problems sliding the piston through the seal. Wipe the piston clean and generously lube with clean brake fluid. Make sure it is lined up square and be gentle. You may want to twist it as you are pushing it in in case you get hung up. You said the piston was still partially in the caliper, so you avoided damaging the piston by it falling to the ground and getting dinged or scratched.

This way you eliminate the risk of damaging the connecting lines when disconnecting the caliper. But of course, if you are able to get the piston back in, the bleeder will snap off when you go to bleed it.

You got nothing to lose, worst that can happen is that you have to replace the caliper, which has already been suggested.

 

good info here... May try to do this myself on the front end... I may have a seizing caliper, or maybe a bad wheel bearing...

 

I need to break down my rear passenger caliper and clean it btc its hanging. Already ordered a rebuild kit from Cool Springs. Just wonder if my small craftsman compressor has enough ass to pop out the pistons.

 

There is a video on youtube and I do believe they use a small compressor..

 

10-4 will check it out. Thanks

 

If you have one that's sticking it's probably easier to just replace it than deal with trying to get the piston out. I've taken several apart and found the corrosion to be bad enough so I doubted how long it would work for after cleaning up. Add to that those stupid pins that hold the pads in place corroding and becoming impossible to remove got me to just buy loaded ones when I replaced the rotors on my 2000 Tundra.

 

blackdemon_tt rebuilding a caliper is not hard. I think the kit from Toyota was 15 bucks and it comes with all the seals and lube. Very easy to do yourself. The hardest part is cleaning the caliper. I just rebuilt the front calipers on my tundra due to torn dust seals. Take your time and watch a few youtube videos if you have never done this before. This is not a hard job at all. My 2007 had 195,000 miles on it when I rebuilt them.

 

I'm just past you at 225k, and I'm having some grinding issues up front below 15mph, but all corners appear clear and soft with no grooves... I've seen the rebuild done, so I may just jump in and do it...

 

I would check wheel bearings. I replaced mine as well, one was still good the other was just starting to go. For anyone doing this brake job don't plan a rebuild and it's your only vehicle. Like mentioned above if you take it apart and have a bad piston with tons of corrosion you will need to replace the piston, or the whole caliper depending on condition. If this is your primary vehicle it would be smart to just buy the whole caliper and replace it.

 

This is what holds me up exactly... LOL got a special needs kid and he loves this truck, therefore any oil changes or maintenance have to be done while he is sleeping, or in school... During this pandemic has to be while he is sleeping and he doesn't get much of that either... LOL... Fuck me, right, LOL..

 

For really stuck pistons, there is an old trick of using a grease gun to get more hydraulic pressure than an air compressor can provide.

Do a web search using the terms “grease gun caliper piston”.


Greg