How do you get the last piston out?

Don't use mole grips if you can avoid it. Pump both pistons out with the fluid. One usually comes first, use a G-clamp to hold it while you pump the other out, but protect your caliper with a piece of scrap wood, otherwise you will muller the paint. Then when they're both wobbly, just work em out with your hand. G-clamp is good for getting them back in as well, just protect the caliper! I didn't.

[ophic]

Originally Posted by carternd

G-clamp is good for getting them back in as well, just protect the caliper! I didn't.

And keep an eye on the fluid in the reservoir, if the lines are still attached. I made this mistake on my car and got brake fluid everywhere

[Stu]

Originally Posted by carternd

Don't use mole grips if you can avoid it. Pump both pistons out with the fluid. One usually comes first, use a G-clamp to hold it while you pump the other out, but protect your caliper with a piece of scrap wood, otherwise you will muller the paint. Then when they're both wobbly, just work em out with your hand. G-clamp is good for getting them back in as well, just protect the caliper! I didn't.

Yeah, that's what i did. It's just harder in practice when I've got 6 pistons instead of 2, and it always ends with one that's difficult to get out long after I've disconnected the hydraulics.

[Spanner Man]

Good morning all.


Providing there's enough piston protruding from the caliper, put a jubilee clip of suitable size around it, & use grips. Warm the caliper body first with a blowlamp, or hot air gun. Then try to rotate the piston before attempting to withdraw it. Make sure the jubilee clip doesn't slip though, or you may score the pistons.


Cheers.

Originally Posted by ophic

And keep an eye on the fluid in the reservoir, if the lines are still attached. I made this mistake on my car and got brake fluid everywhere

Might as well change the fluid while you're at it. Or is this old fluid from the calipers? I made a mess all over as well, best to cover the discs and paintwork as best you can, saves a lot of cleaning.

[yorkie_chris]

Originally Posted by Stu

Yeah, that's what i did. It's just harder in practice when I've got 6 pistons instead of 2, and it always ends with one that's difficult to get out long after I've disconnected the hydraulics.

Leave the caliper on the disc, take pads out, pump pistons. Disc stops 5 of them falling out while the 6th remains stuck.

That usually gets them out far enough that jubilee clip + grips can get them out easily.

These are from ZXR same 6 pots as 'busa right?

[Stu]

Originally Posted by yorkie_chris

Leave the caliper on the disc, take pads out, pump pistons. Disc stops 5 of them falling out while the 6th remains stuck.

That usually gets them out far enough that jubilee clip + grips can get them out easily.

These are from ZXR same 6 pots as 'busa right?

Ah, that's an idea, I guess I'd just be worried about damaging the discs especially because I'd be only servicing the calipers when they are dragging so not retracting.

yup, same

Airline!

I'm in Biggin Hill if you happen to be passing, I can pop them out for you in seconds.

[Stu]

Originally Posted by ipap

Airline!

I'm in Biggin Hill if you happen to be passing, I can pop them out for you in seconds.

so how does this work? I guess you have to put the other 5 pistons back in & secure them?

Thanks for the offer but I did post that I got it out 8 mins after putting the thread up.

[yorkie_chris]

Originally Posted by ipap

Airline!

Airline is ok, but if you get one that is actually seized then they will laugh at air. My compressor goes up to about 160psi. Maybe you have higher one. Also you still have to put other 5 pistons back in.