Board Logo

URGENT HELP NEEDED, Brake probs
57kombi - June 19th, 2005 at 12:41 PM

Bloody typical, I have someone coming on Thursday to view the bus regarding the sale and so I took it out today as I havent driven it for 3 weeks as when I drive it I dont want to sell it.
Anyway I had fitted all new slave cylinders and the brakes were binding on, I think the brake rod didnt have any play and so wasnt allowing the piston in the master cylinder to return and so locking the fluid in and locking the brakes on.
I adjusted the rod so it has about 1 mm of play and bled the brakes.
Now when I am driving and put the brakes on there is a clicking from the front right wheel.
I Checked and regreased the bearings and checked everything was tight and adjusted the brakes and still a clicking when I put pressure on the pedal.
It doesnt click when you are driving only when the brake is on and you are nearly stopped.
Anyone have any ideas.

Cheers
Dave

[Edited on 19-6-2005 by 57kombi]


General_Failure - June 19th, 2005 at 01:08 PM

Sorry, I'm having a 'dumb' day. Is it a singular click, or a click-click-click when you brake?


57kombi - June 19th, 2005 at 01:24 PM

Click click click, it gets slower as you come to a stop.
The drum is fine, I just cant think or see what it can be, the sound wasnt there before I adjusted the rod, but I cant see how that would cause it.
I have also adjusted the rod in and out with no change to the sound.
It only happens when you are coming to about 5-10kmh.
If you put the brakes on at 60kmh, the sound doesnt appear until about 10kmh?????



Cheers
Dave


77bay - June 19th, 2005 at 03:25 PM

I don't think there is anything wrong at all. She knows how much time and effort and love went into her rebuild that she doesn't want to go to a new home where she doesn't know how she will be treated. Might have to stay outside on the driveway in the cold and wet, no more warm shed!:cry


General_Failure - June 19th, 2005 at 04:12 PM

Maybe it's a coincidence and has nothing to do with the rod.

Half-baked idea that just came to me:

Initially the brakes were jamming on. Correct? The jamming causes excess friction/dragging between the rear brakes and drums. This causes brake overheating and distortion of the drums, which the vans are somewhat prone to. A distorted drum causes a click when braking.


57kombi - June 19th, 2005 at 04:34 PM

I did think of that but how come it only happens when it is really slow, nearly stopped.
I thought it would happen as soon as the brakes were applied?

Cheers
Dave


dragbug - June 19th, 2005 at 10:15 PM

Its probably being caused by the fact a,
Gyno tried to fix the brake's on a splitty!


General_Failure - June 19th, 2005 at 11:05 PM

possibly not a very big distortion. My beetles drums did the whole click at low speeds.

It's a splitty???? I didn't realise! distorted drums. They were the worst offenders of all.

How about this. The brake has a finite reaction time correct? A time for it to go between floating in air and hitting the drum. When the oscillation gets faster than the time it takes the shoe to touch the drum, movement is reduced quite a lot, stopping the click from occurring. of course that means your shoe has a lot more airtime and braking is reduced.

That's my theory anyway.