Sudden brake failure

[what2do]

I'm sure Michael won't forget but just in case, remember to order bearings if you decide that the discs need replacing. See how the job grows? Easy enough job to check the wear on your discs.

[timski]

Hi guys,

So I took my van to a local mechanic and he found that both rear wheel cylinders were leaking. One very badly and the other had begun to leak but you couldn't notice it until you removed the rubber dust cap. Also one was completely seized. The mechanic mentioned I would probably find the brakes a bit more spongy because of the cylinder that was seized. The pedal is definitely more spongy but I've never driven another T25 so don't have anything to compare it to. I might see if I can persuade Mitch to pop by again so we can compare

Apparently the rest of the brake components were looking good. And he said the wheel bearings seemed fine too. No play and no noise.

By the way, I noticed since the brake fluid is above the max level. More of less to the top of the reservoir. Is that an issue? Should I try to syphon some out?

Cheers,
Tim.

[kevtherev]

I have never been in any vehicle with spongy brakes as standard
Also, I would be expecting play in the rear wheel.

[Oldiebut goodie]

No mention that the faulty components were replaced?

[what2do]

I have never been in any vehicle with spongy brakes as standard
Also, I would be expecting play in the rear wheel.

Not always the case though is it?

[what2do]

Hi guys,
I might see if I can persuade Mitch to pop by again so we can compare

Cheers,
Tim.

You're welcome to have a ride in my van. Rears were recently overhauled, fronts last year. Brakes are tip-top.

[timski]

Thanks Mitch. I would love to take you up on that offer to compare brakes.

Rear cylinders were replaced with new oldie.

I hope he meant there was no excessive play or within tolerance Kev. I can check that myself I guess. Am I right you should jack it up, hold the wheel level on either side and rock and there should be very little movement - how much? 1mm? And then same again top and bottom?

Cheers,
Tim.

[kevtherev]

There will be some play on one plane but never both.
The wear on the bearing carriers will be causing it.
Inless they are noisy I would not be worried

[hilift]

it is possible that the fluid loss is due to a master cylinder seal failure and fluid is weeping into the servo ,
that would poss explain both the fluid loss with no obvious signs, and the los of pedal pressure . worth a look as I had exactly that happen to my ,80 devon a few years ago .