brake problem : unable to move the car (brake lock)
#1
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I take my car this morning
first time after lots of modifications
I put 4 pistons AP racing
I drive for 10 km (very cool and did not brake a lot)
and after a braking, the car start to slow ....
I finish the car was immobilised, impossible to move from 1 meter
4 wheels where bloqued
I've been lucky and after 30 min same I can drive slowly, I come back to home using only hanbrake
I do some check :
- fuid level is good
- connectors are good
- I check from brake to see a bloqued piston (everything is ok)
and I find a problem :
- I can push pistons on a caliper (when 1 go inside, an other one move ouside) but if I block the 3 pistons and try after to push the last one
it's impossible
so brake fluid can go from brake unit to caliper, but something is wrong and fluid can not go back
I suppose my master cylinder is dead and I need to change the brake unit
I did not find post about that
do you think it's the brake unit whitch is dead ???
first time after lots of modifications
I put 4 pistons AP racing
I drive for 10 km (very cool and did not brake a lot)
and after a braking, the car start to slow ....
I finish the car was immobilised, impossible to move from 1 meter
4 wheels where bloqued
I've been lucky and after 30 min same I can drive slowly, I come back to home using only hanbrake
I do some check :
- fuid level is good
- connectors are good
- I check from brake to see a bloqued piston (everything is ok)
and I find a problem :
- I can push pistons on a caliper (when 1 go inside, an other one move ouside) but if I block the 3 pistons and try after to push the last one
it's impossible
so brake fluid can go from brake unit to caliper, but something is wrong and fluid can not go back
I suppose my master cylinder is dead and I need to change the brake unit
I did not find post about that
do you think it's the brake unit whitch is dead ???
Last edited by florent78; 23-01-2010 at 11:11 PM.
#7
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not sure
but I think I do it correctly
as I say before , I can push pistons on a caliper (when 1 go inside, an other one move ouside) but if I block the 3 pistons and try after to push the last one
it was really impossible
I use I big multi grip pliers
and really unable to push back the last piston 1mm back
so I suppose if I had air in the system, I can push back the piston
no ?
but I think I do it correctly
as I say before , I can push pistons on a caliper (when 1 go inside, an other one move ouside) but if I block the 3 pistons and try after to push the last one
it was really impossible
I use I big multi grip pliers
and really unable to push back the last piston 1mm back
so I suppose if I had air in the system, I can push back the piston
no ?
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