One rear caliper is binding on my car. So when you put hand brake on and then take it off the brake pressure is still applied.
It doesn't seem to be the hand brake cable, as it doesn't it even when the cable is disconnected, It also doesn't seem to be the slide pins, these all seem in good condition. So it is in the piston or the lever at the back of the piston, I pulled the rubber cover back and it all seems okay in there, plenty of grease, so guessing piston.
I'd happily just buy new calipers but I don't think they are available? Is the only issue I need to rectify for MOT, so have until thursday to do that.
Any ideas to sort quickly? I am guessing I won't get it done by then.
Probably have to get the calipers rebuilt, any suggestions for that? I assume the pistons are corroded so more than just a seal kit.
cheers
Chris
Rear caliper binding
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KiwiDave
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Re: Rear caliper binding
I've used this company and can recommend their services. I sent them a complete set and both my rears were binding. Came back all painted and good as new. If un-seizing is all you want, they can do a one day turnaround according to their website.
https://www.bcs-automotive.co.uk/brake- ... rbishment/
https://www.bcs-automotive.co.uk/brake- ... rbishment/
1985 Sunrise Red S3 TWR
2006 Mercedes CLK 280 Sport AMG
2006 Mercedes CLK 280 Sport AMG
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spirit r
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Re: Rear caliper binding
You can try polishing the piston with stainless steal or chrom polish by hand Dave.
Sending parts to GB isn't possible in these days. Perhaps you planing a trip to Strassbourg, give me a shout so you will take some parts with you
Sending parts to GB isn't possible in these days. Perhaps you planing a trip to Strassbourg, give me a shout so you will take some parts with you
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ian65
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Re: Rear caliper binding
easy fix, I had to do mine before its last mot too..... pistons usually clean up ok with some very fine wet and dry..... it's rust forming in the groove behind the main caliper seal that causes the piston to stick... as the rust forms it forces the seal against the piston seizing it.
Drop the caliper off the car, pop the piston out, clean it up with some wet and dry, clean the rust out of the seal groove in the caliper body and rebuild with one of these kits..... you only need to clean the piston, replace the main seal and the dust boot and you'll be good to go.
https://www.ebay.co.uk/itm/224047543404 ... %3A2334524
Drop the caliper off the car, pop the piston out, clean it up with some wet and dry, clean the rust out of the seal groove in the caliper body and rebuild with one of these kits..... you only need to clean the piston, replace the main seal and the dust boot and you'll be good to go.
https://www.ebay.co.uk/itm/224047543404 ... %3A2334524
1999 Jaguar XJR V8 Supercharged
1992 Peugeot 205 1.9 GTI
2003 Mercedes SLK 200 Kompressor
Re: Rear caliper binding
Thanks for that tip, I did this and just passed the MOT.
ian65 wrote: ↑Mon Oct 18, 2021 9:12 pm easy fix, I had to do mine before its last mot too..... pistons usually clean up ok with some very fine wet and dry..... it's rust forming in the groove behind the main caliper seal that causes the piston to stick... as the rust forms it forces the seal against the piston seizing it.
Drop the caliper off the car, pop the piston out, clean it up with some wet and dry, clean the rust out of the seal groove in the caliper body and rebuild with one of these kits..... you only need to clean the piston, replace the main seal and the dust boot and you'll be good to go.
https://www.ebay.co.uk/itm/224047543404 ... %3A2334524