brake bias sensing valve missing

[Lushman]

I had my first mot on my car(172 cup) over the weekend and it failed on the rear brake sensing valve not being there. The mot inspector said that there was no braking on the rear discs at all when the foot brake is pressed and proved as the rear discs were not scoured as they would as soon you hit the brakes. I had a set of new rear discs fitted a few weeks ago at a different garage, they had put on the wrong set before which rubbed against the axle stub grinding the edge from it.

I obvouisly think that the garage who did the brakes have either removed this or it has fallen off due to the vibrations caused. Has anyone else encountered this problem. Just wondered what I need to do and where this valve (sensor) is located. so I can see for myself what has happened.

Thanks

 

[Guy]

search mate, gets posted every week basically they dont have one

 

[izibizi]

IIRC there is no such sensor on the CUP, but that does not mean you have no rear brakes
lol

 

[Fred@BTM]

its a known issue

 

[monkeymagic]

there is no valve on the cup. Read the last page of this newsletter from VOSA- http://www.vosa.gov.uk/vosa/publications/mot - issue 31 - apr 2006.pdf

But there should be some effort from the rear brakes so you might need to replace the rear pads if there is not enough force being applied - i had to when mine was MOTed last year.

 

[BenR]

there is a valve, but it is just not connected to the axle, the bias does not change with axle/load position.

 

[lemonnobby]

Same as above this is a known issue there will be min effort with the rear brakes and the valve is there but the connecting arm to the axle isn't.

 

[Lushman]

Thanks everyone for your help. Now I have some ammo to present to the garage.