jlayton
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| posted on 28/4/12 at 06:06 PM |
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bleeding brakes
as above been trying to bleed my brakes the last few days and i know theyre not on a servo etc but the pedal just dont seem right. ( i have bleed many
brakes aswell so no all the basics and where to start from)
the problem is when i bleed the back brakes the pedal sort of hits a dead end in the master cylinder i.e cant push it any further down if you try.
then when i go to bleed the front the pedal just drops to the floor and does not return  . iv manualy returned the pedal and made sure there is no
air bubbles in all 4 corners.
the car does stop when pushing it 3 foot forward in my garden. but the brake pedal sort of goes to the " dead end point i mentioned" which
is about 1" - 1.5" down then goes solid. is that correct and sound right? or is it a case of getting it out of the garden and just try
them properly on the road
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daviep
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| posted on 28/4/12 at 07:00 PM |
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Sounds like you have a problem with the MC, possibly a piston stuck at the end of it's travel would be my guess.
Easiest way to test the MC is to remove the pipes and screw bleed nipples into the ports, pump the pedal with one nipple open at a time to check each
piston is moving fluid then close both nipples and the pedal should then be rock solid.
Cheers
Davie
“A truly great library contains something in it to offend everyone.”
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jlayton
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| posted on 3/5/12 at 07:08 PM |
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just bought a new mc and fitted and exactly the same. front stop instantly and nothing to the rears. if i pump the pedal it does stay hard and the
rears will then work only when pumped. checked pistons in all calipers and are all fine . is it a case of putting it back on the road now and
getting all the rubbish of them where theyv been sat in the garden ?
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rusty nuts
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| posted on 3/5/12 at 08:23 PM |
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Do you have the calipers fitted so that each bleed nipple is at the top? Did you manually adjust the clearance between the disc and the pads with the
handbrake cable slackened off??
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jlayton
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| posted on 3/5/12 at 08:29 PM |
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yes i adjusted the pads in with the hand brake and the 2 front calipers nipple is at top and the 2 rears it is faces down hill which i thought was
correct?
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daviep
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| posted on 3/5/12 at 08:49 PM |
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quote:
Originally posted by jlayton
yes i adjusted the pads in with the hand brake and the 2 front calipers nipple is at top and the 2 rears it is faces down hill which i thought was
correct?
Bleed nipples need to be at the top on all calipers so that the air is pushed out as the caliper fills with fluid.
I did tell you how to test the MC
Cheers
Davie
“A truly great library contains something in it to offend everyone.”
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jlayton
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| posted on 3/5/12 at 08:56 PM |
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understand your saying they have got to be facing uphill but is this a 100% must. as i bought the car tax/mot'd. i then stripped it to rebuild
it myself and everything has been put back as it was. as i took photos of everything before i dismantled
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jlayton
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 posted on 3/5/12 at 09:14 PM |
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i dont no how to upload a picture on here so iv got 1 off google and iv put it in my archive. its the same set up as iv done mine
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40inches
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| posted on 3/5/12 at 09:17 PM |
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quote:
Originally posted by jlayton
understand your saying they have got to be facing uphill but is this a 100% must. as i bought the car tax/mot'd. i then stripped it to rebuild
it myself and everything has been put back as it was. as i took photos of everything before i dismantled
Absolutely, 100%, definitely, Yes! or you will never get them bled properly, if you don't want to swop them over remove calliper's and
hang them up, with the bleed nipples facing up, while you bleed them.
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jlayton
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| posted on 3/5/12 at 09:24 PM |
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ok thanks for that i will try and hang them up while i bleed them tomorrow  . if i was to swap them over the hand brake cable and s/s flexi would
not reach ? i have looked in a few guys archives and they seem to have got them the same as me.
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40inches
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| posted on 3/5/12 at 09:26 PM |
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True! But they would have to remove, and hang them, to bleed them
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jlayton
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| posted on 3/5/12 at 09:29 PM |
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ok cheers mate i will try tomorrow and see how i get on
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maccmike
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| posted on 3/5/12 at 09:34 PM |
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I had similar problem. Was adamant there was no air in line, got spare person to pump pedal then hold it down, open nipple slightly, air came out. Did
this few times = sweet brake pedal.
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jlayton
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| posted on 6/5/12 at 07:25 PM |
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just got back from a weekend away with this kids. gone into the garden took the rear calipers off spun them round so nipple is at top bleed them, and
pefect
cheers people
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