Rear brake caliper pins stuck solid

[24358151]

Hi
changing brake pads, front ones done no problems, the rear ones the caliper pins are stuck solid, using right 7mm Alen Key just wont budge tuck skin off fingers trying, going in for MOT so need changing any help much appreciated,
Colin

[Singvogel]

I literally know the feeling - I did this job a few days ago.

My knuckles are still skinless - my wife keeps asking why I don't wear gloves.........

Some things you can just not apply heat to - so try the other extreme - ice!

Check for this stuff on eBay if you haven't hear of it - its a great idea, and really works - usually.

wurth rost off ice

You should be able to get it locally, perhaps from an agricultural / tractor parts supplier as every farmer round here has discovered it - that's how I encountered it.

It freezes - cracks the rust and has penetrating oil - much better than WD40 type stuff alone.

[trikey]

Another one in Consett

Drop the caliper off, invert it and then fill the rubber covers (where the pins sit) with penetrating oil and leave for a few hours, refit the caliper and try again.

Failing that, I have a spare rear caliper if you want to swap, may get you out of trouble if you are stuck!

[24358151]

Thanks Singvogel and Trikey will try the ice idea next week, doing the Christmas stuff tomorrow, our lass said same thing to me when seeing blood "told you should have put gloves on", the bairn says "they don't understand Daddy" he's 4, if carnt get them out will be in touch Trikey, thanks, yeh Consett and no snow yet

[David Lawrence]

Originally Posted by 24358151

Hi
changing brake pads, front ones done no problems, the rear ones the caliper pins are stuck solid, using right 7mm Alen Key just wont budge tuck skin off fingers trying, going in for MOT so need changing any help much appreciated,
Colin

Are you using an allen key socket or just a short allen key? A socket type lets you get far more leverage on it with a standard socket bar.

[24358151]

Hi, yep tried both socket and Allen Key neither budged them, soaked in WD40 which didn't help at all

[trikey]

Originally Posted by 24358151

Hi, yep tried both socket and Allen Key neither budged them, soaked in WD40 which didn't help at all

Looks like its off with the brake hose and a different caliper then watch the bolts that hold the caliper on, they have a tendancy to round off, use a hex socket if possible.

[David Lawrence]

Originally Posted by trikey

Looks like its off with the brake hose and a different caliper then watch the bolts that hold the caliper on, they have a tendancy to round off, use a hex socket if possible.

With the caliper off and in a bench vice, it should be possible to get proper leverage on the pins to get them out. They're not exactly huge bolts after all.

[trikey]

Originally Posted by David Lawrence

With the caliper off and in a bench vice, it should be possible to get proper leverage on the pins to get them out. They're not exactly huge bolts after all.

Exactly, much easier off the car, less swearing and skinning of fingers

[Mike Noc]

Originally Posted by 24358151

Hi, yep tried both socket and Allen Key neither budged them, soaked in WD40 which didn't help at all

Try tapping the end of the socket and extension with a hammer before attaching the ratchet. A few good whacks might loosen the rust off the threads.

Mike