Can't lock rear wheels on brake tester

**ManiacuV6** · 25 October 2013, 19:53

IS quite possible that you have a problem with the brake pump. Check also both sliders for every rear caliper.

**simons2** · 25 October 2013, 20:14

Does it have a rear ride height system that adjusts the brake bias when you put heavy loads in the boot ?

**rj scotty** · 25 October 2013, 20:17

Originally posted by simons2

Does it have a rear ride height system that adjusts the brake bias when you put heavy loads in the boot ?

Head, nail, on ?

**WidowmakerS2** · 25 October 2013, 20:35

I wish it did, Quattro cars (typ89) does not have a load-valve as far as i know

**martinws** · 25 October 2013, 21:24

Is there not a brake balance valve on the bottom of the master cylinder?

You can just see it here

**WidowmakerS2** · 25 October 2013, 21:39

Originally posted by martinws

Is there not a brake balance valve on the bottom of the master cylinder?

You can just see it here

Well, all that does is control pressure to the rear with pressure to the front. Not adjustable in any way. Perhaps worth a try?

**martinws** · 25 October 2013, 21:41

I don't think its adjustable but it could just be knackered. Could probably replace with adjustable one though.

**Sleeper_Avant** · 25 October 2013, 22:08

bypass it and if it doesnt lock up then theres a major issue with the master cylinder!

**WidowmakerS2** · 25 October 2013, 23:41

Originally posted by Sleeper_Avant

bypass it and if it doesnt lock up then theres a major issue with the master cylinder!

How do i bypass it? Just replace it with a T-joint?

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