280i rear calipers
Discussion
Thats right matey...These guys can rebuild and sometimes have off the shelf exchange units...or there is big redd for a refurb...
https://www.google.co.uk/url?sa=t&rct=j&q=...
https://www.google.co.uk/url?sa=t&rct=j&q=...
Hi Mark. Thanks, brake master cylinder Granada? Had a panic with "Wesley" passed MOT no problem. Took him for a blast, peddle went nearly to the floor and tried to cut out on me. No leaks, bled the brakes, no air at all and peddle is solid. However one rear caliper was HOT, HOT. I do suspect the handbrake caliper as I wound it up a bit tight for the MOT hopefully the problem and not the master cylinder. The cutting out could be the result of fitting a coil which had a ballast resistor fitted. I removed it as mine already has one in the circuit. So maybe the wrong type coil? I've got the original so that will be refitted. I guess Wesley is sulking for being woken up from hibernation? Cheers John C.
System all bled no air but maybe the fluid did boil? A real pain getting the callipers off though. J C. Yeah most likely handbrake if that's what you wound on, need to wind back for the drive home ;^)
After time they get reluctant to do anything (hence the winding on for MOT's) it might be time to take them off, clean up and grease the internals, clean where they swivel and fettle the brass return "spring", and refit.
Currenly I have my whole diff off and the HB calipers are in need of TLC and will be done before refitting, I can't recommend this approach just for the HB calipers though, you can remove them from underneath, much easier, although still a pain!
After time they get reluctant to do anything (hence the winding on for MOT's) it might be time to take them off, clean up and grease the internals, clean where they swivel and fettle the brass return "spring", and refit.
Currenly I have my whole diff off and the HB calipers are in need of TLC and will be done before refitting, I can't recommend this approach just for the HB calipers though, you can remove them from underneath, much easier, although still a pain!
Thanks Adam. So much easier when the Diffs on the floor.
Just been to visit "Wesley" after work and pumped the brakes and the wheels turn fine. So conclude it might have been the handbrake wound on a bit too much. However, if the brake fluid did boil you'd think there would be air bubbles when bleeding? I must have replaced all the fluid bleeding but no sign of any air? Cheers John C.
Just been to visit "Wesley" after work and pumped the brakes and the wheels turn fine. So conclude it might have been the handbrake wound on a bit too much. However, if the brake fluid did boil you'd think there would be air bubbles when bleeding? I must have replaced all the fluid bleeding but no sign of any air? Cheers John C. Nah if the fluid boils it's actually the water in it boiling, which forms steam, and in extreme pushes the fluid up and out of the reservoir making a right mess. While steam is in the system it's compressible and causes the poor pedal feel.
Then when it cools down the steam condenses and is reabsorbed back into the fluid probably leaving no evidence at the caliper end of things.
As the HB pads are relatively minimally thermally coupled to the rear calipers you would probably get a brakey burny smell but that's about it. Also you may already have worn off the offending tightness - rotate by hand and check before slackening off too much.
Then when it cools down the steam condenses and is reabsorbed back into the fluid probably leaving no evidence at the caliper end of things.
As the HB pads are relatively minimally thermally coupled to the rear calipers you would probably get a brakey burny smell but that's about it. Also you may already have worn off the offending tightness - rotate by hand and check before slackening off too much.
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