late brake calliper rebuild

[lambrettalee]

my o/s brake calliper is sticking, i dont want to pay jk etc prices for a recon item ,so want to refurb my own as the calliper its self is in great condition, any hints / tips etc would be appreciated , i have seen rebuild kits for a tenner , what is the best way off pushing the piston out when removed from the van etc..... any help appreciated , cheers and happy new year...

[Therunner]

Having struggled to get the pistons out after removing ours, I'd say it's probably easier to use the hydraulics to push them out before removing the caliper. Would involve removing the disc first though.

Melvin

[lambrettalee]

i was thinking that myself, or maybe getting a grease nipple on in replace of the bleed nipple and pushing it out that way, not sure whether the pressure would be enough though?...

[dugcati]

oh the joy's of calliper referbs! In my experience matey... if the calliper pistons are seized in your probably better off replacing the calliper - I bust the remaining piston on each calliper after pumping the other one out.

Which one doe you have? twin piston units or single piston sliding calliper units?

[R0B]

try pricing refurbished calipers from your local partco http://www.touchlocal.com/business/sear ... arts%20Ltd they were a lot cheaper than jk when i bought two last year...

[dugcati]

Just spotted that amps has some up for sale on the classifieds.....

https://club8090.co.uk/forum/viewtopic.php?f=17&t=44956

[jed the spread]

If you take your old one to gsf they will chop it in for a recon one. if you ask for 80-90 club discount too they knock an extra 20% off it wasnt that expensive.

jed

[jed the spread]

Oh and there are two kinds of late calliper too. Make sure they know what one it is before you order one.

jed

[lambrettalee]

Oh and there are two kinds of late calliper too. Make sure they know what one it is before you order one.

jed

thanks for all replies,i was unaware there was 2 later types, i have managed to find a calliper at a breaker which i have now fitted but it is "rough" in its appearance but works fine, i want to recon mine rather than bin it as it is still in great condition externally and i would like to put it back on when done, gsf prices were more expensive than jk when i looked at getting a recon one but didnt know about the discount, thanks

[lambrettalee]

oh the joy's of calliper referbs! In my experience matey... if the calliper pistons are seized in your probably better off replacing the calliper - I bust the remaining piston on each calliper after pumping the other one out.

Which one doe you have? twin piston units or single piston sliding calliper units?

mine are the large single piston type..

[kevtherev]

you don't mention which set up you have

but with a single piston I would imagine your piston has seized because the dut cover has come off or got damaged allowing ingress of water and other such crap
to free it up will mean removing it from the carrier
once off use a G clamp to push the piston back in.
then the hydraulics to push it out
repeating utill it starts to move toward it's full outward travel

refit a new cover and refit to the carrier

oh the joys of Yamaha calipers...forever freezing, I new it would come in handy one day

[lambrettalee]

you don't mention which set up you have

but with a single piston I would imagine your piston has seized because the dut cover has come off or got damaged allowing ingress of water and other such crap
to free it up will mean removing it from the carrier
once off use a G clamp to push the piston back in.
then the hydraulics to push it out
repeating utill it starts to move toward it's full outward travel

refit a new cover and refit to the carrier

oh the joys of Yamaha calipers...forever freezing, I new it would come in handy one day

you would have thought so , but ,no, dust cover is 100% spot on, piston is clean as a whistle, i have pumped the piston in and out (fully) ten + times and squirted a quarter can of plus gas around the piston , the van has only covered 37k km,s so im guessing it was lack/little use before i had it thats the course, i "think" the inner seal is at fault, the brakes are sticking/binding rather than seized on, the piston isnt returning quick enough, i have also put a new flexi pipe on which made no difference , basically if the brakes were applied and released the wheel could be turned slowly by hand rather than spinning freely, if left for an hour or so the brakes were less tight as though the piston was returning at its own pace.. the newly fitted rough calliper is fine but very coroded hence wanting the original back on...