Locking Front Brakes
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Joined: Sep 2007
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From: Victoria West
Locking Front Brakes
On braking my front brakes locks up and there's a screeching of tires. Once I release the pedal all seems fine...or is it?
I dissassembled the front brake calipers and cleaned out the cylinder bores and blew out any contaminants from the line. Reassembled and bled the system only to find the pads doesn't move as freely from the rotors as they should. C-clamped the cylinder as far back in the caliper as it will go, pumped the brakes and still the rotor doesn't move freely from the pads, when the pedal is released...which accounts for the radical "loss of power", as the front brakes are holding on.
Bare in mind the vehicle hasn't seen the long road for almost 5 years and has been under the grinder/ welder/ primer/ sanding for most of that period and only moves out in the driveway when it's a good day to work outside.
Any ideas? New flex hoses? Flush the brake fluid from the whole system and start fresh? New caliper rubber seals? Blow the lines out with compressed air to rid of goop? New proportioning valve?
I dissassembled the front brake calipers and cleaned out the cylinder bores and blew out any contaminants from the line. Reassembled and bled the system only to find the pads doesn't move as freely from the rotors as they should. C-clamped the cylinder as far back in the caliper as it will go, pumped the brakes and still the rotor doesn't move freely from the pads, when the pedal is released...which accounts for the radical "loss of power", as the front brakes are holding on.
Bare in mind the vehicle hasn't seen the long road for almost 5 years and has been under the grinder/ welder/ primer/ sanding for most of that period and only moves out in the driveway when it's a good day to work outside.
Any ideas? New flex hoses? Flush the brake fluid from the whole system and start fresh? New caliper rubber seals? Blow the lines out with compressed air to rid of goop? New proportioning valve?
Post Fiend
Joined: Jan 2005
Posts: 8,402
Likes: 10
When the calipers are dragging open the bleed screws, if the hubs then turn free you have a problem with the pipes (probably flexi hoses) or master cyl., if still dragging then the problem is with the calipers.
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