Cup Compensator

[Alex H]

Brake lines/compensators are one thing I know nothing about - cup seems to have been attacked from multiple angles on the braking system, there's s**t loads of different pipes - I'll probably end up getting them all re-done for piece of mind, but is the compensator valve thingy connected properly? I'm sure I've read that the cup doesn't have it connected?

 

[Advikaz]

They don't have c valves iirc

 

[Sam@NP]

CAT C

 

[Alex H]

CAT C

Helpful.

 

[peanuthead]

Looks wrong to me. They do have the valve but should have no spring attached to the. Even weirder looks like yours has a metal bar attached?

 

[Alex H]

Looks wrong to me. They do have the valve but should have no spring attached to the. Even weirder looks like yours has a metal bar attached?

It's a very, very rusty spring from the look of it. I'll set about disconnecting it.

 

[MG cup]

It looks like a bar to me, that ain't a 172 cup valve. Did you take the picture?

 

[mark123]

That is what mine looks like, minus the bar. I bet someone has had it replaced thinking it was missing the bar.

 

[BIGASH]

That looks the same as the valve I got and mine came with the bar too! I don't understand why some cars dont have the bar, without it surely the valve doesn't adjust for when more weight is in the back of the car?

 

[mark123]

The bar is removed from factory so the rear bias is always at minimum no matter the load.

 

[Alex H]

Right i've freed the bar connector off now, proper bodge job, someone had welded a bit of bar up and attached it to the valve thingy. The arm is now swinging about freely, any ideas on how to fix it up? Are there any 'official' mounting points or anything nearby? I'm on axle stands rather than a ramp, makes viewing tricky.

 

[mark123]

It should have a little return spring, that looks to have been removed from yours.

If you fix it up with cable ties or similar it will be on max effort to rears.

I'll dig out a pic later if you're still non the wiser.

 

[mark123]

Found these that show the return spring. If you cable tie it up like in the last pic you'll have to much effort to the rears. My rears have locked under moderate braking with it cable tied up.

 

[peanuthead]

Amazing how many cups have the spring or simular on. Must be the MOT stations failing them

 

[MG cup]

Right i've freed the bar connector off now, proper bodge job, someone had welded a bit of bar up and attached it to the valve thingy. The arm is now swinging about freely, any ideas on how to fix it up? Are there any 'official' mounting points or anything nearby? I'm on axle stands rather than a ramp, makes viewing tricky.

I couldn't see the adjustment nut in the first pic.

The spring on mine was attached to that small hook bellow the lock nut, spring was week enough to allow the arm to move down when braking but return to the up position when you let off. Is this the norm with most?

 

[mark123]

Yeah that's how mine works too.

 

[Alex H]

Right I've bodged it up for now, until I can find out what spring I need