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[davieboy0312]

Has anyone ever had a rear caliper piston get stuck? Cant get it out. Anyone had this before ?

[GastronomicKleptomaniac]

Yup. Replaced with new caliper, on an effort vs money scale, that option won.

[davieboy0312]

Just wondering if the piston removal tools work or not.

[05omegav6]

Need to be a bit more specific... How has it stuck? Whilst pushing piston back in during pad change or another reason...

Basically piston needs to be perfectly square to push home

[davieboy0312]

Pushed piston back as far as it would go and removed from car about 4 years ago. One of the seals was burst so go myself a repair kit got one piston out but other is solid.

[Andy H]

Brake fluid absorbs moisture from the air - if your caliper had some fluid between the piston and cylinder wall it may have rusted solid.

When I rebuilt the calipers on an old Land Rover that had been unused for a few years I managed to get all the pistons out using compressed air. Some of them came out with a bit of a pop and a cloud of atomised brake fluid so I was careful to avoid breathing in the mist.

[davieboy0312]

Thinking about this
http://www.ebay.co.uk/itm/141337063351?_trksid=p2055119.m1438.l2649&ssPageName=STRK%3AMEBIDX%3AIT

[05omegav6]

Can't see that helping tbh

Would run with compressed air personally, but if that doesn't work, caliper might not be worth saving

[davieboy0312]

Cheers guys 👍

[Diamond Black Geezer]

This is a couple of weeks old, but the slightly more heath robinson method (but works) is to simply use the car's brakes to push the offending piston out. Did it in the scrap yard not too long ago.

Lift the caliper off, pump the pedal, and after a few tries, out she pops! You've blasted a bit of brake fluid out, and of course they'd need bleeding again (but they will if you replace a caliper anyway) If you want just the one piston out, that's a simple matter of clamping the other piston in place. Found it a very efficient method of getting the pistons out.

Of course ensure that the neighbours cat and small children that you like aren't nearby.

[davieboy0312]

Calipers on the bench. Seals knackered. Stuck and might new new ones

[Diamond Black Geezer]

Worry not. Worst xcase scenario, as said above, is new calipers. I sadly snapped a bleed nipple on one of my calipers when I refurbed them. Now a snapped bleed nipple is not 'game over' in real terms, but drilling out the old one and then tapping a new thread, and then finding a new bleed nipple of the newer larger thread I just wasn't into the time and aggro. So a very good low mileage caliper was found for £20 or therabouts.

Worth doing, will transform your brakes. Keep it up 

[TheBoy]

Yep. Easy fix after you've worn out several pads trying to free it is to put on a known good used caliper.

[baggers]

For the small money that calipers are you may as well put a pair of new on and give the whole system a thorough flush/bleed .

[davieboy0312]

Just had the buggers powder coated as well