Back brake pistons (at wits end)
 

Right- short of buying a new caliper and pistons, can anyone recommend a wzy of getting a very seized piston out?

I've killed a pair of Sealey piston pliers and compressed air won't do it. Managed to get one out from pumping the system, but the other is stuck fast.

Many thanks...

Re: Back brake pistons (at wits end)
 

Blimey those piston pliers lasted less time than mine did!!!!!!!

As for the stuck piston if compressed air or pumping the brake didn't get it out you may have to just get some new pistons and butcher that one to get it out

Re: Back brake pistons (at wits end)
 

Just had the exact same trouble mate with my new GSXR calipers. In the end i put the calipers in really hot soapy water and left them for a few hours. Then i used my own version of a drain plug. Easy to make with a few washers some rubber and a decent sized bolt.

http://i168.photobucket.com/albums/u...048528x396.jpg

Make sure the washers fit inside the piston. Push the rod in tighten up the nut therefore compressing the rubber making a strong grip and pull like crazy and pop. I was celebrating like a prat when i got one out :smt101. Make sure you dry them off first before using this system otherwise you'll have no grip.

HTH Rich

Re: Back brake pistons (at wits end)
 

Is it the right or left hand piston that's stuck?

Re: Back brake pistons (at wits end)
 

DD- yeah- it's well shafted! They're not that robust, are they?!

Pete- It's the back piston (left if you're sitting on the bike).

Since calming down a little (was effing well sipped off earlier!), I've got another plan.

I got the other piston out by putting it back on the hose, bleeding the system and pumping it- the left piston came out a bit, but as the right piston came right out, it was leaking fluid and therefore an open system, so the (well) seized piston didn't have a chance to come out proply, like.

So- My last ditch attempt is to clean the other piston, get it back in the system and tape it down somehow so it (hopefully) won't move. Then prime the system and try once more to pump the well seized one out with the brake lever.

Otherwise it's a call to SV Spares and hope they have a reasonable priced A1 rear caliper.

I now realise the wisdom of overhauling the calipers twice a year!

Cheers for your help guys.

D

Re: Back brake pistons (at wits end)
 

Pete had the same problem. He used zip ties to stop the piston moving out.

There is this one on e bay
http://cgi.ebay.co.uk/Suzuki-SV650-S...QQcmdZViewItem

Re: Back brake pistons (at wits end)
 

Cable ties! GENIUS!!!! I was wondering what to use.

Cheers for the link- that looks well different to the caliper I've got sitting next to me. Hmmmm. SV Spares list them at £45. I'll see if they've got one with less seized pistons if tommorow's swearathon doesn't go well...

Nice one Lissa!

Re: Back brake pistons (at wits end)
 

I use a small g-clamp to hold the piston/pistons I don't want to move.

But if I had a really troublesome SV caliper, I'd get another one, they're pretty cheap (though of course the replacement might also be fubared) My original caliper needed new seals, I bought a used Busa caliper for ?10, it even came with good pads :mrgreen: SV caliper in bin.

Re: Back brake pistons (at wits end)
 

Nice. Are the Busa rear calipers a match, then? Or do you need to mod them/make an adaptor plate?

I have limited tools in the flat and apparently even less patience!

Re: Back brake pistons (at wits end)
 

The busa caliper is the same as the sv i think the gixxer srad caliper is the same as well