The Breakroom > The Water Cooler
UK MOT's
dsquire:
--- Quote from: Darren on September 22, 2009, 07:03:19 PM ---Yes, it was changed but made no difference to the results.
--- End quote ---
I am running out of thing to look at. This is what happens with a bad flexible hose.
When pressure is put on it restricts to movement of the brake fluid. The more pressure you put on the more it restricts. After a period of time the pressure will slowly bleed thru. It is acting like a one way restrictor valve. It is the reverse of the problem that I had with my car that caused the brakes to stay on and drag causing heating of the rotor and wheel.
I will try and talk to my son again and see if there is any way that the abs system could be causing any of this.
Cheers
Don
rleete:
With the wife's Buick, I could not properly bleed the brakes because of the ABS. Seems you need some electronic doohicky (technical term) to hold the system open while you bleed. Costs a lot more than having it done at the garage.
Air in the line will give lower pressure reading on one side.
dsquire:
Darren
Talked to my son again about the abs system and he dosen't think that is the problem as you would know when that comes on.
Lets walk thru this again.
Low brake pressure to one front wheel. Why?
Restriction in brake line? where? In steel brake line? Did it get pinched when you were making repairs? It could be pinched off enough to allow a bit of brake fluid through to apply the brakes and bleed the brakes but not as much as the other side causing an imbalance, therefore low braking pressure.
In flexible brake line? Same symptoms as steel line above.
Are calipers operating properly? Does piston expand and retract easily? Do calipers slide freely on mounting bolts? Have calipers been rebuilt? Have calipers been replaced? Has both sides been replaced or rebuilt or just one side?
My son says that when doing major brake work he would always install new or factory rebuilt calipers. If one flexible hose needed replacing, replace them both. Be sure the calipers are free on their mounting so they can work the way they were designed to.
If I think of anything else Darren I'll put up another post. :doh:
Cheers :beer:
Don
Darren:
I think we've pretty much covered everything that has been tried.....
One question, in a hydraulic system if air is present in one calliper or line wouldn't it effect both brakes?
dsquire:
--- Quote from: Darren on September 23, 2009, 05:03:54 AM ---I think we've pretty much covered everything that has been tried.....
One question, in a hydraulic system if air is present in one calliper or line wouldn't it effect both brakes?
--- End quote ---
Morning Darren. For Me it's just about bed time but I keep weird hours, I'm a bit of a night hawk.
Now to the question. I don't think that it would Darren because air compresses differently than brake fluid.
Cheers :beer:
Don
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