55ant
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| posted on 21/1/10 at 10:25 AM |
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brake problem
morning chaps,
got an issue with the brakes, i have done very little work with brakes in the past.
at the moment when i push down in the pedal there is almost no restistance and no stopping power.
if i pump the pedal feel slowly comes back and after 4/5 pumps its back to normal until i need to break the next time, then its back to the same
process.
so, air in the system? master?
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mookaloid
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| posted on 21/1/10 at 10:37 AM |
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could well be air in the system or if you have a bit of play in a wheel bearing it could cause this too - pushing the pads out or the brake shoes in
too much.
or it might be something else 
"That thing you're thinking - it wont be that."
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smart51
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| posted on 21/1/10 at 10:46 AM |
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Try bleeding the brakes. If it improves, it was air.
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speedyxjs
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| posted on 21/1/10 at 10:52 AM |
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I would guess its air in the system.
How long can i resist the temptation to drop a V8 in?
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daviep
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| posted on 21/1/10 at 12:03 PM |
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Have you been doing any work prior to having this problem? Was it OK or is this the first time you've filled the system?
1: Could be air - unlikely unless you've been working on the system
2: Discs or drums on the back? - if drums are the shoes adjusted out fully to the drums?
3: Slack front wheel bearing or incorrectly mounted disc - disc run out pushes pads back
4: Stuck slide or piston on caliper - causes the caliper/mount to flex.
Get someone to pump the pedal and watch each corner for excessive movement.
Davie
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55ant
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| posted on 21/1/10 at 12:12 PM |
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cheers all, im waiting for swmbo to return to pump the brake for me, im thinking bearing as i am hearing some crunchy noises at low speed! cant be
good 
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britishtrident
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| posted on 21/1/10 at 12:58 PM |
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If you have disc rear brakes there is a kown problem with bleeding the rear on some designs of irs due to the bleed nipple on the caliper not being
at the highest point of the fluid side caliper.
[I] “ What use our work, Bennet, if we cannot care for those we love? .”
― From BBC TV/Amazon's Ripper Street.
[/I]
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