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Brake calliper bolt will not move
- Thread starter natas
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Is this one of those dual-line jobbies?
I think you need to bleed those in a certain order, starting from the M/C corner, then its pair, (I think other side of axel but not sure), someone will know ...
Also a power bleed thingy helps ...
we had a series once we had to 'prime' each piston in each wheel ... real pain in the posterior ...
Please explain what the means.
"starting from the M/C corner, then its pair, (I think other side of axel but not sure), "
M/C corner? then its pair? other side of the axel?
jamesmartin
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bleeding should be straight forward no particular order is necessary, check all joints are tight, fluid isnt splashing in m/c when pedals pumped ,does all air appear to disappear after a few pumps at calipers ,sometimes its necessary to adjust servo rod
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Do you think that swapping in a known good M/C would help?
After a couple pumps the pedal gets really hard, but when its really hard there is not much brakes.
then the next time the brakes will be perfect.
very strange
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It might be new, but they have been know to 'not work well' ...
do you have access to a known good swap-out to try?
jamesmartin
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when your nleeding brakes does air disappear after a few pumps at the caliper ie jar and fluid stop bubbling ?
The last 2 times that we bled the brakes we got no air from any of the calipers.
Not sure about the jar?
Is the jar the container on the M/C?
jamesmartin
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jar is the container you put pipe from caliper bleed nipple in to
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Mmm, do you feel this may be a causal factor?
lol, sorry, my mechanic used no jar, just straight onto the floor then washed away later
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Using a jar, partially filled with brake fluid, and a tube , kept under the fluid level, the other end of the tube on the bleed nipple ... helps to stop air being drawn in to the system ...
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Dunno, how 'good' are you at bleeding brakes ?
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Yes but the jar falls over every time
That's because you're letting the dog help again ...
jamesmartin
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lol, sorry, my mechanic used no jar, just straight onto the floor then washed away later
do it with a jar then you know its clear running fluid with no air , at all 4 corners ensuring nipples fully closed before removing pipe , pump pedal a few times then recheck with pipe and jar at each corner air should go after a couple of pumps ,then get someone to pump pedal whilst you look at fluid in master cylinder reservoir it shouldnt splash up , if everythings ok you can adjust m/c servo rod if theres too much pedal travel
