Help with brakes please

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LaurenceLaura

LaurenceLaura

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66
Location
plymouth
Hello all, so I have had a issue with my breaks for some time... if I press hard on the breaks I will veer hard off to the right (drivers side) .

I have replaced all 4 calipers, pipes, pads and discs but it still not working right. The system is fully bled. There is no hub seal leaks.
Could it be that I have a bias valve? Or master cylinder is knackered? I have replaced the vacuum pump.
I'm completely lost now. Thanks in advance for your help.
 

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I does sound very much like your nearside caliper isn't working.
I had a similar issue which I cured by using a syring and a length of silicone/diesl bleed off pipe to draw the fluid (and air) out through the bleed nipple on the caliper. There's no need to pump the brakes just remove the top from the reservoir loosen the bleed screw and suck the fluid through. Keep an eye on the level as you don't want to suck air in.

If you need a syringe I can send you one for £3 (assuming you are UK based).

The other thing to look for is the length of rigid brake pipe that runs across the back of the front caliper, sometimes this (if not installed correctly) can hit the suspension and get crushed.
 
Thankyou all, I have check the new calipers and they are working perfectly.
All the rigid pipes are not crushed.
Tracking was done last month and hasn't been used since apart from trying to fix the brakes.
 
miktdish said:
I does sound very much like your nearside caliper isn't working.
I had a similar issue which I cured by using a syring and a length of silicone/diesl bleed off pipe to draw the fluid (and air) out through the bleed nipple on the caliper. There's no need to pump the brakes just remove the top from the reservoir loosen the bleed screw and suck the fluid through. Keep an eye on the level as you don't want to suck air in.

If you need a syringe I can send you one for £3 (assuming you are UK based).

The other thing to look for is the length of rigid brake pipe that runs across the back of the front caliper, sometimes this (if not installed correctly) can hit the suspension and get crushed.
Click to expand...
I will still have one of these please. Always handy to have
 
Are you certain it is pulling? If the trailing arm bushes at the chassis are badly worn the rear axle can steer when you lift off the power. You seem to have checked everything else.
Do you get a good flow of fluid when you bleed the brakes? Wondering if there is an internal blockage.
 
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LaurenceLaura said:
Thankyou all, I have check the new calipers and they are working perfectly.
All the rigid pipes are not crushed.
Tracking was done last month and hasn't been used since apart from trying to fix the brakes.
Click to expand...

How have you checked calipers?...
How old is vehicle and have you checked flexi hoses,under pressure they can if knackered balloon...if pulling to drivers side you need to be looking at passengers side...
 
Perhaps get the front up on axle stands, get someone to push the brake pedal by hand, try turning the wheels, both should lock up at the same time.
 
frog hopper said:
Perhaps get the front up on axle stands, get someone to push the brake pedal by hand, try turning the wheels, both should lock up at the same time.
Click to expand...

Thinking about that...would need engine running to get proper brake effort...not advisable on axle stands...
 
Shippers said:
Thinking about that...would need engine running to get proper brake effort...not advisable on axle stands...
Click to expand...
I should have made clear, I mean to use as little pressure as possible to get the brakes working, should be easy to see if one side acts before the other.
 
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