Secret to compressing rear brake caliper piston?
#26
Re: Secret to compressing rear brake caliper piston?
I won't restate methods above, but I did my brakes last night and turning in the piston worked. Although, my passenger side was very difficult to turn. To boot, that side the rotor was very warped and the brake pad was chewed up after having been rep,aced about 15k ago. Anybody know how to identify with certainty BAD brake calipers rear (or front) to know when it is time to replace?
also if you use the correct tool you wont mark up the piston.
They sell the a cheap tool that can go on a 3/8 ratchet for like 3$ at any part store.
I did my Honda rear brakes with Wagner ThermoQuets Ceramic with no problems.
make sure you use the pad with the round tab on the INSIDE...
some people use it on the outside
Eric the Car guy shows you on you tube how to do this job perfect online free
#27
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Re: Secret to compressing rear brake caliper piston?
Here's the Link to Eric the Car Guy replacing Honda Accord rear brakes and this damn caliper issue.
What a great find!
Thank you all. I've been screwing with these calipers for three hours this afternoon. Broke a tip off a new ADVANCE AUTO Impact Wrench, too. SO another trip to AA.
#28
Honda-Tech Member
Re: Secret to compressing rear brake caliper piston?
You can get a lot of good tips from Ericthecarguy.com. But, I don't like the idea he has about pinching the brake line with a vise-grip. I've always been able to turn the pistons in without doing that. If you are going to change your own pads, I would suggest you also learn how to bleed the brakes. The old fluid should be flushed out every 3 years or so.
#29
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Re: Secret to compressing rear brake caliper piston?
Went back to Advance Auto and they swapped out the Impact Wrench.
SO i tried again, and on the fourth whack, a tip broke on this new wrench.
I guess I'll button things back up with new pads BUT not new rotors installed and ask a local shop to break loose the screws.
I bought the $11.79 square caliper tool at Advance Auto [it wasn't $3 here] and it worked well in getting the piston fully retracted. I never would have known that was needed except for this forum..... at least for a while until I stumbled onto a Youtube video.
SO i tried again, and on the fourth whack, a tip broke on this new wrench.
I guess I'll button things back up with new pads BUT not new rotors installed and ask a local shop to break loose the screws.
I bought the $11.79 square caliper tool at Advance Auto [it wasn't $3 here] and it worked well in getting the piston fully retracted. I never would have known that was needed except for this forum..... at least for a while until I stumbled onto a Youtube video.
Last edited by varocketry; 06-29-2014 at 08:19 AM.
#31
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Yes. Hit them with a punch...center punch a hole between where the screwdriver would go..like a tic tac toe kinda thing then angle your punch and work it off. If I get a chance tomorrow I'll take pics of what I'm talking about. It also would help to heat up the screws with a map gas torch.
#32
Honda-Tech Member
Re: Secret to compressing rear brake caliper piston?
Or, take a drill, and a bit about half the diameter of the screw head, and drill the heads right off. You can then pull the rotors off, and the remainder of the screw will come out easily. I use a craftsman impact driver now. You don't want to try an impact driver from Advance Auto, they are crap and why I had to drill the screws out the first time.
#33
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Re: Secret to compressing rear brake caliper piston?
What? Easily? If they're so frozen they won't turn out with an impact wrench, how will cutting the heads off help?
Sounds like you've read too many posts without actually having experienced this problem. There is a good Youtube video where a guy drills out a frozen bolt on a Porsche 936 rotor after heating and punching. But it's far from "easy."
Most videos show heating the ROTOR hat body , not the bolt, to break loose the rust bond. I'll try that today with an acetylene torch.
Sounds like you've read too many posts without actually having experienced this problem. There is a good Youtube video where a guy drills out a frozen bolt on a Porsche 936 rotor after heating and punching. But it's far from "easy."
Most videos show heating the ROTOR hat body , not the bolt, to break loose the rust bond. I'll try that today with an acetylene torch.
#34
Honda-Tech Member
Re: Secret to compressing rear brake caliper piston?
What? Easily? If they're so frozen they won't turn out with an impact wrench, how will cutting the heads off help?
Sounds like you've read too many posts without actually having experienced this problem. There is a good Youtube video where a guy drills out a frozen bolt on a Porsche 936 rotor after heating and punching. But it's far from "easy."
Most videos show heating the ROTOR hat body , not the bolt, to break loose the rust bond. I'll try that today with an acetylene torch.
Sounds like you've read too many posts without actually having experienced this problem. There is a good Youtube video where a guy drills out a frozen bolt on a Porsche 936 rotor after heating and punching. But it's far from "easy."
Most videos show heating the ROTOR hat body , not the bolt, to break loose the rust bond. I'll try that today with an acetylene torch.
Originally, I had bought an impact driver from Advance, but one hit with the hammer shattered the fragile bit. Then I drilled the heads off, and that worked like a charm. I have since bought a craftsman impact driver and did the front rotors with that. I could have easily drilled the heads off the front rotors too, but I figured I could use an impact driver for other things too.
#35
Honda-Tech Member
Re: Secret to compressing rear brake caliper piston?
Originally, I had bought an impact driver from Advance, but one hit with the hammer shattered the fragile bit. Then I drilled the heads off, and that worked like a charm. I have since bought a craftsman impact driver and did the front rotors with that. I could have easily drilled the heads off the front rotors too, but I figured I could use an impact driver for other things too.
#36
Honda-Tech Member
Re: Secret to compressing rear brake caliper piston?
#37
Honda-Tech Member
Re: Secret to compressing rear brake caliper piston?
Pepboys for sure,possibly Oreilys and I believe NAPA. Its even better if you have a good independent parts store in your area, as they generally sell better parts and tools(although usually at slightly higher prices than the big chain stores)
#38
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Re: Secret to compressing rear brake caliper piston?
I Had success today but it was a long process, starting with going back to Advance Auto for a new Impact Wrench - I guess that's a good thing about their lifetime warranty. No questions asked.
First, both front rotor screws had to be 'encouraged' through the use of the IW, but they can't out relatively easily. So I redid the entire front brake system.
Then I figured I'd give the rear rotor's another try as it was early enough in the day [I gave up yesterday and just put pads in because I couldn't get the screws out on with rear side]. I started on the passenger side rear and I think technique plays a big role in things working right. First I started with the BallPeen hammer just as Eric They Car Guy stated. And, just kept going at it. Ball Peen rounded end on the screw, whack the hammer face with a big hammer. A couple times. Then start in again with the Impact wrench. It was at least five rounds when the first screw started turning. The second gave in several rounds later.
So I moved to the Driver's side rear. I went through 10-12 rounds of Ball peen whacks and the Impact wrench at it wasn't budging. So I brought out the Oxy-Acetylene torch to heat things up -- this time focusing on the rotor body around the screw. Metal color didn't change but it started smoking so it was getting hot. 6-8 Ball Peen/Impact Wrench rounds later one screw is stripped but you can get bite if you push the IW into the screw head without twisting. Finally the non-stripped screw started turning. But the stripped one was holding firm.
I decided to try some advice read early in this thread and used the torch to heat up the screw itself. I got it reddish-yellow several times but I wanted to be careful not to melt it, just get the heat as fully into the screw as possible. Then I took a break so the whole area would cool down. When I returned, several ball peen hammer whacks, then I tried a pointed center punch in the center of the hole and whacked that a couple time. Next round of Impact Wrench the head started moving - I thought I'd broken the head off. But the screw came out intact and I had total success. Perseverance repeating the rounds, heat, center punch, it all helped. By the time I was done, I really felt like I was using the Impact tool correctly. Frequent medium hard whacks trying to imitate an air impact wrench vice big hard whacks that only broke tips. No broken tips using it on four wheels, today, with a better technique.
I got all the new slotted, cross-drilled rotors on, replaced the calipers and news pads, guide pins cleaned and greased, wheels reinstalled, and went out for bedding test drive. Then the garage cleanup started.
First, both front rotor screws had to be 'encouraged' through the use of the IW, but they can't out relatively easily. So I redid the entire front brake system.
Then I figured I'd give the rear rotor's another try as it was early enough in the day [I gave up yesterday and just put pads in because I couldn't get the screws out on with rear side]. I started on the passenger side rear and I think technique plays a big role in things working right. First I started with the BallPeen hammer just as Eric They Car Guy stated. And, just kept going at it. Ball Peen rounded end on the screw, whack the hammer face with a big hammer. A couple times. Then start in again with the Impact wrench. It was at least five rounds when the first screw started turning. The second gave in several rounds later.
So I moved to the Driver's side rear. I went through 10-12 rounds of Ball peen whacks and the Impact wrench at it wasn't budging. So I brought out the Oxy-Acetylene torch to heat things up -- this time focusing on the rotor body around the screw. Metal color didn't change but it started smoking so it was getting hot. 6-8 Ball Peen/Impact Wrench rounds later one screw is stripped but you can get bite if you push the IW into the screw head without twisting. Finally the non-stripped screw started turning. But the stripped one was holding firm.
I decided to try some advice read early in this thread and used the torch to heat up the screw itself. I got it reddish-yellow several times but I wanted to be careful not to melt it, just get the heat as fully into the screw as possible. Then I took a break so the whole area would cool down. When I returned, several ball peen hammer whacks, then I tried a pointed center punch in the center of the hole and whacked that a couple time. Next round of Impact Wrench the head started moving - I thought I'd broken the head off. But the screw came out intact and I had total success. Perseverance repeating the rounds, heat, center punch, it all helped. By the time I was done, I really felt like I was using the Impact tool correctly. Frequent medium hard whacks trying to imitate an air impact wrench vice big hard whacks that only broke tips. No broken tips using it on four wheels, today, with a better technique.
I got all the new slotted, cross-drilled rotors on, replaced the calipers and news pads, guide pins cleaned and greased, wheels reinstalled, and went out for bedding test drive. Then the garage cleanup started.
#40
My Name is Nobody
Re: Secret to compressing rear brake caliper piston?
I Had success today but it was a long process, starting with going back to Advance Auto for a new Impact Wrench - I guess that's a good thing about their lifetime warranty. No questions asked.
First, both front rotor screws had to be 'encouraged' through the use of the IW, but they can't out relatively easily. So I redid the entire front brake system.
Then I figured I'd give the rear rotor's another try as it was early enough in the day [I gave up yesterday and just put pads in because I couldn't get the screws out on with rear side]. I started on the passenger side rear and I think technique plays a big role in things working right. First I started with the BallPeen hammer just as Eric They Car Guy stated. And, just kept going at it. Ball Peen rounded end on the screw, whack the hammer face with a big hammer. A couple times. Then start in again with the Impact wrench. It was at least five rounds when the first screw started turning. The second gave in several rounds later.
So I moved to the Driver's side rear. I went through 10-12 rounds of Ball peen whacks and the Impact wrench at it wasn't budging. So I brought out the Oxy-Acetylene torch to heat things up -- this time focusing on the rotor body around the screw. Metal color didn't change but it started smoking so it was getting hot. 6-8 Ball Peen/Impact Wrench rounds later one screw is stripped but you can get bite if you push the IW into the screw head without twisting. Finally the non-stripped screw started turning. But the stripped one was holding firm.
I decided to try some advice read early in this thread and used the torch to heat up the screw itself. I got it reddish-yellow several times but I wanted to be careful not to melt it, just get the heat as fully into the screw as possible. Then I took a break so the whole area would cool down. When I returned, several ball peen hammer whacks, then I tried a pointed center punch in the center of the hole and whacked that a couple time. Next round of Impact Wrench the head started moving - I thought I'd broken the head off. But the screw came out intact and I had total success. Perseverance repeating the rounds, heat, center punch, it all helped. By the time I was done, I really felt like I was using the Impact tool correctly. Frequent medium hard whacks trying to imitate an air impact wrench vice big hard whacks that only broke tips. No broken tips using it on four wheels, today, with a better technique.
I got all the new slotted, cross-drilled rotors on, replaced the calipers and news pads, guide pins cleaned and greased, wheels reinstalled, and went out for bedding test drive. Then the garage cleanup started.
First, both front rotor screws had to be 'encouraged' through the use of the IW, but they can't out relatively easily. So I redid the entire front brake system.
Then I figured I'd give the rear rotor's another try as it was early enough in the day [I gave up yesterday and just put pads in because I couldn't get the screws out on with rear side]. I started on the passenger side rear and I think technique plays a big role in things working right. First I started with the BallPeen hammer just as Eric They Car Guy stated. And, just kept going at it. Ball Peen rounded end on the screw, whack the hammer face with a big hammer. A couple times. Then start in again with the Impact wrench. It was at least five rounds when the first screw started turning. The second gave in several rounds later.
So I moved to the Driver's side rear. I went through 10-12 rounds of Ball peen whacks and the Impact wrench at it wasn't budging. So I brought out the Oxy-Acetylene torch to heat things up -- this time focusing on the rotor body around the screw. Metal color didn't change but it started smoking so it was getting hot. 6-8 Ball Peen/Impact Wrench rounds later one screw is stripped but you can get bite if you push the IW into the screw head without twisting. Finally the non-stripped screw started turning. But the stripped one was holding firm.
I decided to try some advice read early in this thread and used the torch to heat up the screw itself. I got it reddish-yellow several times but I wanted to be careful not to melt it, just get the heat as fully into the screw as possible. Then I took a break so the whole area would cool down. When I returned, several ball peen hammer whacks, then I tried a pointed center punch in the center of the hole and whacked that a couple time. Next round of Impact Wrench the head started moving - I thought I'd broken the head off. But the screw came out intact and I had total success. Perseverance repeating the rounds, heat, center punch, it all helped. By the time I was done, I really felt like I was using the Impact tool correctly. Frequent medium hard whacks trying to imitate an air impact wrench vice big hard whacks that only broke tips. No broken tips using it on four wheels, today, with a better technique.
I got all the new slotted, cross-drilled rotors on, replaced the calipers and news pads, guide pins cleaned and greased, wheels reinstalled, and went out for bedding test drive. Then the garage cleanup started.
you used an Impact WRENCH to remove a screw?
are you sure it wasn't an impact driver?
ever hear about drilling out the head or using an extractor?
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#41
Honda-Tech Member
Re: Secret to compressing rear brake caliper piston?
As soon as I thought the impact driver wasn't doing the trick, I would have started drilling. It takes very little time to drill the heads off, and the rest of the screw should be easy to remove after the rotor is off. I don't like using torches, unless as a last resort. I've never tried the punch method, and probably never will now that I have a good impact driver, and a cordless drill.
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#43
Re: Secret to compressing rear brake caliper piston?
A cold chisel and hammer is the similar method.
https://honda-tech.com/attachment.ph...1&d=1290200100
#44
Honda-Tech Member
Re: Secret to compressing rear brake caliper piston?
Seems to me, the farther you get away from the center of the screw, the more leverage you would have on it. That little drawing looks like the notch is too close to the center to me.
#46
Re: Secret to compressing rear brake caliper piston?
Lots of derp in this thread. Instead of being helpful, I think I will just chastise everyone that tries do DIY their brakes without having a clue wtf is going on.
It's the most important system on the car! Just take it to a professional if you don't know exactly what you are doing!
And the ones regurgitating crap they read on a forum somewhere need to just quit. You aren't helping anyone by talking about something you haven't ever done yourself.
[rant=off]
It's the most important system on the car! Just take it to a professional if you don't know exactly what you are doing!
And the ones regurgitating crap they read on a forum somewhere need to just quit. You aren't helping anyone by talking about something you haven't ever done yourself.
[rant=off]
I do recommend trying your new DIY brakes in your driveway back and forth first or a very slow street if you have one out your driveway.
Anyway. Props to all you DIY's!
#47
Re: Secret to compressing rear brake caliper piston?
The edge of the brake pad fits perfectly into the groove to turn it. Just use your old break pad and hold it with a pair of pliers. Literally just saved me today. I hope this finds an unlucky person that didn’t know to get the tool lol
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