Tools Anyone?

[Stan Pinn]

Hi Guys,

I have a seized piston in my front brake caliper, does anyone have a piston removal tool i can borrow?

http://www.demon-tweeks.co.uk/products/ProductDetail.asp?cls=MCYCLE&pcode=GUN3673

I am confident i can fix the problem if i can remove the piston and this tool or one similar would be perfect.

I would be happy to leave a suitable deposit while I use the tool. PLus a few pennys for beer!

I'm in Swindon so the closer the better but I don't mind a ride out at the weekend and drop it back the following weekend.

Any help with this would great thanks.

Stan

 

[(RIP) Yamaha1]

Sorry, Stan - ain't got one of those - didn't even know you could get such a tool!

Would compressed air not shift it? I would visualise blocking the good piston so it can't move - then a squirt of compressed air in the union hole -with the bleed nipple closed, would, I'd have thought, send it into space - unless it's pointed towards the floor?

Never tried it - but have read that it's a sure-fire way of shifting them!!

Mike

 

[Nate]

i know hind sight is a wonderful thing but...

easiest way to get them out is to not remove the caliper from the brake system. Then just squeeze the brake lever till the offending piston is almost out.

To stop it coming all the way out, stick a bit of wood or a screw driver in there and then pump the next one out... etc etc.... untill all pistons are almost out...

Hope this helps

 

[harry]

I thought the pistons were a type of nylon material, unlikely to be properly seized as in the old days.

 

[digga]

One method if you have no compressed air to hand, is to change the bleed nipple for a
grease nipple and pump out with grease!

Then clean the grease out with a solvent.

I would'nt bother with this if it was the fancy servo/abs system though.... i'd send it too someone who knows what they are doing..

 

[Stan Pinn]

Thanks for all your reply's, I'm going to have a go at pumping it out with the leaver at the weekend. I will let you know how i get on.

Cheers Stan

 

[Stan Pinn]

Thanks All

Well I have had the caliper off the bike today but left the brake pipes on.
I got a can of brake cleaner from work and gave it plenty of it!

I clamped up the two oposite pistons with a slim piece of wood so it would give a little. I then used a pair of pipe grips on the remaining free piston. Gettle squeezed and the other piston moved! I then cleaned up the piston with a brass brush and squeezed it back down with the pipe grips. Another dose of brake cleaner and bobs your uncle its as good as new!

I have had seized calipers on cars before and they have been a nightmare! This was an easy job and to think i was thinking of putting it into a bike shop to have it sorted!

So now i feel a few quid better off now but the wife will soon spend it

Stan

 

[harry]

Well I have had the caliper off the bike today but left the brake pipes on.
I got a can of brake cleaner from work and gave it plenty of it!

I clamped up the two oposite pistons with a slim piece of wood so it would give a little. I then used a pair of pipe grips on the remaining free piston. Gettle squeezed and the other piston moved! I then cleaned up the piston with a brass brush and squeezed it back down with the pipe grips. Another dose of brake cleaner and bobs your uncle its as good as new!

I have had seized calipers on cars before and they have been a nightmare! This was an easy job and to think i was thinking of putting it into a bike shop to have it sorted!

So now i feel a few quid better off now but the wife will soon spend it

Stan

Stan, what bike and what material is the brake piston?

 

[(RIP) Yamaha1]

Just removed my rear caliper on the 1100GS to fit Goodridge hoses, and one of my pistons was sluggish, so removed them to clean thoroughly. They are steel - but seem to be Teflon coated - the sluggish one just had a bit of a dirty ring around it - just wiped clean.

The blo*dy rear Goodridge hose won't fit onto the fixed pipe nipple!! This nipple has an unthreaded "nose" on it, about 2mm long before the threads start - and this bit won't actually go into the new Goodridge coupling!!

I think the way forward is to carefully reduce the diameter of this "nose" bit with my Dremel and a grinding stone - if I can get in there to rotate the nipple as I grind it!! The threads seem the same on both the old and new pipes - so hope this "mod" will do the trick!! Just hope the other 4 pipes fit without probs - wasn't banking on having to do open-heart surgery so soon into the exercise!!

Mike

 

[(RIP) Yamaha1]

I've started a new thread on 850/1100/1150 concerning my probs - sorry to hijack yours, Stan!!

Mike

 

[Stan Pinn]

I 've not been back to this site for about a week now, I had a new baby son born on Thursday at 7pm and the wife has been in hospital all week. Its been a hard week but worth it!

No prob's about the hijack...

The piston did look like it was teflon coated but I couldn't say for sure.

 

[Canuck]

brakes

Thanks for the brake advice and congratulation about the baby!

 

[bowser]

I have an old set of circlip pliers, with a 90 degree bend a the top set them up so that a squeeze on the handles opens them up and then put the jaws in the piston squeeze and a bit of a twist and most come out no problem, failing that I have a small chuck from a model makers lathe and you can get the jaws in the piston from the back, open them out and then you can get the piston out that way.

 

[JASONBC]

Hi Guys,

I have a seized piston in my front brake caliper, does anyone have a piston removal tool i can borrow?

http://www.demon-tweeks.co.uk/products/ProductDetail.asp?cls=MCYCLE&pcode=GUN3673

I am confident i can fix the problem if i can remove the piston and this tool or one similar would be perfect.

I would be happy to leave a suitable deposit while I use the tool. PLus a few pennys for beer!

I'm in Swindon so the closer the better but I don't mind a ride out at the weekend and drop it back the following weekend.

Any help with this would great thanks.

Stan

Can't you just remove the brake caliper from the disc with the bleed nipple removed, put an air line down there and blow the piston out? it's worked for me several times on other bikes

 

[(RIP) Proff]

Can't you just remove the brake caliper from the disc with the bleed nipple removed, put an air line down there and blow the piston out? it's worked for me several times on other bikes

Dohh'hh

Read all the post
He fixed it in February