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HELP, my rear drums won't bleed up.
Posted: Sun Mar 14, 2004 4:25 pm
by DatRacer
The rear drums on my 83 hilux will not bleed up. The fronts bleed up nicely but the rears keep spitting air. As a result I cannot get any pedal so I can drive the car. I have put loads of brake fluid through and still nothing.
Things I have tried,
Replaced the master cylinder, however I am still dubious about this and am going to reseal it also.
Adjusted the rear brakes. They were a fair way off the drum. Now the handbrake works.
Also up for some new shoes soon too.
Any ideas?
Craig
Posted: Sun Mar 14, 2004 4:33 pm
by ToNkA
Brake Cylinders?
Posted: Sun Mar 14, 2004 4:45 pm
by DatRacer
Hmm. The double ender thingies that push the shoes out? If the master cylinder reseal doesnt fix it I shall check that. Thanks.
Craig
Posted: Sun Mar 14, 2004 4:49 pm
by ToNkA
bingo.
Posted: Sun Mar 14, 2004 11:00 pm
by pegasus
Welcome to world of the awesome Hilux braking system.
Drums could be too warn, adjusting ciezed, and like you said, shoes warn, the wheel cylander pistons could be moving too far, causing all the brake fluid from the pedal into the wheel cylinder, and only enough to move pistons a bit, so shoes not touching (enough).
Is it leaking fluid anywhere?
Stew
Posted: Mon Mar 15, 2004 10:00 am
by DatRacer
It leaks fluid out the back of the master cylinder. Shoes are pretty worn, but it seems to me that the braking system is sucking air in somewhere, hence why we are resealing the master cylinder. If brake fluid was disappearing into the wheel cylinder would this cause a buttload of air to be dispelled when I am bleeding the system?
Craig
Posted: Mon Mar 15, 2004 3:35 pm
by pegasus
I reckon that would cause it.......
Plus, your peddle is probably really spongy and low?
Stew
Posted: Tue Mar 16, 2004 1:06 pm
by DatRacer
Yup. The pedal is shocking. Has been since I bought it. Fingers crossed on the reseal.
Craig
Posted: Tue Mar 16, 2004 4:55 pm
by v8zuki
check proportioning valve as they had a trick of sucking airso u never get brakes
Posted: Tue Mar 16, 2004 5:58 pm
by TUFF MAV
Is the air coming out under pressure when you crack the bleed screw?
Posted: Wed Mar 17, 2004 2:26 pm
by DatRacer
Yeah the air is comingo ut under pressure. The proportioning valve is the bit that has the arm connected to the diff? Applies more brake when under load? The arm on mine is bent way out of shape so I doubt it works at all.
Craig
Posted: Wed Mar 17, 2004 4:17 pm
by pegasus
Don't worry, its bent out of shape to accept the spare under your car.....
Stew
bleeding
Posted: Wed Mar 17, 2004 8:40 pm
by Webbie
ITS probably been done but have u made sure the bleed nipples aren't blocked
Posted: Thu Mar 18, 2004 7:58 pm
by DatRacer
pegasus wrote:Don't worry, its bent out of shape to accept the spare under your car.....
Stew
Ahh ok.
gtwebbie Yeah they are clear man.
I am still waiting on my master cylinder to be done. Good thing there is a spare car to drive.
Craig