This method is a great way, I had a seized caliper on my MR2 it was a twin piston one, the only way i could get them out was using my 20ton jack handle press which works the same way as a grease gun works, it was almost like some bugger had welded the pistons in there, one piston popped out first, then i had to put that piston back in enough to hold a seal but enough to get it back out I held that with a g clamp so the other side would press out
Hi very good video. By the way in what solvent did you let the caliper soak in for a day before applying the grease gun? I have a caliper to work on and you just gave me an idea. Thanks.
This will defenitely come in handy. I unscrewed the end cover off the grease gun hose and the hose threads match the hole where the brake pipe is screwed in. I guess you open the bleeder screw and pump until grease comes out of the bleeder much like you bleed brakes and then close the bleeder and pump the stuck piston out. I'll give it a try today and let you know.
This is a good way if you forget to pump the piston out with your brake pedal with the caliper still hooked to the car.. With two or more pistons stop the pistons that protrude the most with C clamps so you can maintain pressure to the remaining piston(s).
Not sure. I believe it is corrosion on the piston. The two parts are so closely machined that any kind irregularity causes an issue. If I recall correctly, i sanded my piston with some 2000 grit sandpaper before reusing. It slid in easily with no problems. NOTE: Everyone I spoke to said no to reuse the piston if it has corrosion. I did and it works fine, but that may not work for you.
This method worked with ease to get the pistons out, but a bit messy with all the grease in there. I did it on my cb750 dual piston calipers. Any tips on what type of degreasers to use to get it all out of the chambers? I assume some mineral spirits and compressed air.
Yeah pretty much. I do not remember what I used. Paper towels for the bulk of it and then probably wd40, engine degreaser or brake cleaner followed by compressed air.
Sorry not sure. I just used the same grease gun I use for every other grease fitting. You can buy new fittings at the auto parts place if yours is somehow messed up or the "wrong" size.
Ok, but at 1:26 you said you let in sit a day with solvent in it. What solvent did you use and how? I got a stuck piston that I'd rather rebuild than throw away. Thanks.
I'd be so nice if I only have one. I have 4 piston calipers from a 65 AMC marlin and 3 of them aren't stuck, one is, and one of them has a bad seal. This means whenever I go in with compressed air (and probably grease too) it just escapes through the bad seal and leaks out...
Oh, you are right. I dont remember. But i would have used some Marvel Mystery Oil. Like I said in the vid though it did nothing. Just go straight to the grease gun. Super simple.
i had no doubt about it, but how about the other side of caliper it has piston too, how can you remove it?, we all know that it was seal it has no fitting to attach the grease gun. pls make a video that shows how to remove the other side of the caliper's piston thanks...
Having an issue.. Is there a special attachment because I'm not getting a proper seal between the nipple and the tip of the grease gun...all the grease seeps out ?
I have an 81 Yamaha XS 850. Used this trick and it worked nicely. What causes the piston to stick? is the seal inside the sleeve swollen? Should it slide easily? or should it be a tight fit when I reinstall it? Thanks
dubyaohohdee good luck cleaning out the small channels in the caliper..i just bought a new one fuck the old one lol. It's not that expensive to get a new one. It's my BRAKES after all ...
you will never get all the different solvents,cleaners and grease out, to be confident your not fIn up the whole brake system,,cheaper smarter and faster,just to buy new. its only one caliber but that just my 2 cnts
Horrible idea. You don't introduce oils or solvents into the brake system. This advice could lead to replacing everything in the brake system costing thousands of dollars rather than a hundred or so
Thanks for the video, glad I found it today, I wouldn't have thought of doing that. Mine was a bit more fun with two pistons!!!
Excellent video! This helped me free my seized caliper piston successfully!
Fantastic! Never thought about doing it this way. It really makes sense though with 10,000psi coming out of a grease gun.
This method is a great way, I had a seized caliper on my MR2 it was a twin piston one, the only way i could get them out was using my 20ton jack handle press which works the same way as a grease gun works, it was almost like some bugger had welded the pistons in there, one piston popped out first, then i had to put that piston back in enough to hold a seal but enough to get it back out I held that with a g clamp so the other side would press out
This worked great for me. I tried everything else. I used paper towels and brake cleaner to get the rest of the grease out.
Hi very good video. By the way in what solvent did you let the caliper soak in for a day before applying the grease gun? I have a caliper to work on and you just gave me an idea. Thanks.
This will defenitely come in handy. I unscrewed the end cover off the grease gun hose and the hose threads match the hole where the brake pipe is screwed in. I guess you open the bleeder screw and pump until grease comes out of the bleeder much like you bleed brakes and then close the bleeder and pump the stuck piston out. I'll give it a try today and let you know.
Just tried it and it works beautifully. I got my final piston out and didn't even break a sweat!
Thanks again for this help.
This is a good way if you forget to pump the piston out with your brake pedal with the caliper still hooked to the car.. With two or more pistons stop the pistons that protrude the most with C clamps so you can maintain pressure to the remaining piston(s).
Not sure. I believe it is corrosion on the piston. The two parts are so closely machined that any kind irregularity causes an issue.
If I recall correctly, i sanded my piston with some 2000 grit sandpaper before reusing. It slid in easily with no problems. NOTE: Everyone I spoke to said no to reuse the piston if it has corrosion. I did and it works fine, but that may not work for you.
This method worked with ease to get the pistons out, but a bit messy with all the grease in there. I did it on my cb750 dual piston calipers. Any tips on what type of degreasers to use to get it all out of the chambers? I assume some mineral spirits and compressed air.
Yeah pretty much. I do not remember what I used. Paper towels for the bulk of it and then probably wd40, engine degreaser or brake cleaner followed by compressed air.
Sorry not sure. I just used the same grease gun I use for every other grease fitting. You can buy new fittings at the auto parts place if yours is somehow messed up or the "wrong" size.
thank You! worked a treat
What did you use/how did you clean it after it was filled with grease
Ok, but at 1:26 you said you let in sit a day with solvent in it. What solvent did you use and how? I got a stuck piston that I'd rather rebuild than throw away. Thanks.
I'd be so nice if I only have one. I have 4 piston calipers from a 65 AMC marlin and 3 of them aren't stuck, one is, and one of them has a bad seal. This means whenever I go in with compressed air (and probably grease too) it just escapes through the bad seal and leaks out...
Oh, you are right. I dont remember. But i would have used some Marvel Mystery Oil. Like I said in the vid though it did nothing. Just go straight to the grease gun. Super simple.
i had no doubt about it, but how about the other side of caliper it has piston too, how can you remove it?, we all know that it was seal it has no fitting to attach the grease gun. pls make a video that shows how to remove the other side of the caliper's piston thanks...
Having an issue.. Is there a special attachment because I'm not getting a proper seal between the nipple and the tip of the grease gun...all the grease seeps out ?
I have an 81 Yamaha XS 850. Used this trick and it worked nicely. What causes the piston to stick? is the seal inside the sleeve swollen? Should it slide easily? or should it be a tight fit when I reinstall it?
Thanks
Paper towels and nitrile gloves to get 95% of it out and then just a random spray can degreaser from the autoparts store.
How you going to get all of the grease out
You clean it out after taking the caliper apart. That's the whole point after all.
DO NOT PUT YOUR FINGERS NEAR THAT PISTON !!! THAT THING CAN SHOOT OUT LIKE A BULLET AND BREAK YOUR FINGER IN HALF !!!
good tip, I just got done using compressed air and almost shot myself in the balls
nice balls
Yah well i just bought a new caliper for my s10 for 40 bucks, not going to grease up that thing and create a potential failure when i rebuild it..
If it is new it shouldnt be stuck though right? Either way just clean it out after and you are fine.
dubyaohohdee good luck cleaning out the small channels in the caliper..i just bought a new one fuck the old one lol. It's not that expensive to get a new one. It's my BRAKES after all ...
Thank you dubyaohodee
make sure you have the bleeder screw opened
Why does the bleeder screw need to be open
@@juanchoman9824 because that's where you're pumping it in.
If it's closed it won't go in
Very effective, but a bit anticlimactic.
you will never get all the different solvents,cleaners and grease out, to be confident your not fIn up the whole brake system,,cheaper smarter and faster,just to buy new. its only one caliber but that just my 2 cnts
Just buy the bloody things lol
Horrible idea. You don't introduce oils or solvents into the brake system. This advice could lead to replacing everything in the brake system costing thousands of dollars rather than a hundred or so
Obviously you only do this if you're doing a refurb and you'll obviously clean out the piston before you put everything back together