Rear Brake Compensator question

[Geoman]

While replacing the rear rubber brake line, I noticed that the compensator was very corroded. After removing it and cleaning up the outsides with a wire wheel, I saw that one end was a plastic dome-like cap and that it wasn't sitting flush with the body due to corrosion. What exactly does this component do and is there a way to test it, before having to shell out $100+ for a new one?

Thanks!

[vangelislaz]

I guess this might be an ATE compensator? Well this thing plays a vital role in the braking system, keeps the front to rear axle braking force analogy. Don't try to do anything on it! If it works leave it alone. If you suspect that something goes wrong with braking when anything else (discs, lines etc) are ok, something like the car stops more from ...the rear, or stops more from the front than usual, maybe it is that unit the reason. In your case, I will change it. Expect more than a $100 for the price...

[Geoman]

Thanks Vangelislaz. I ended up cleaning the outside with a wire wheel, being careful of the plastic cap, and spraying the inside with brake cleaner. There was no obstruction inside, the spray came out the other end quite nicely! I replaced the short steel brake line that connects the compensator with the rubber brake hose, as the flared end sheared off as I tried to remove it from the compensator. But now it's back on and seems to work fine with no leaks. Yippee!

[vangelislaz]

normally, this thing must not be repaired anyway! And there are not any replacement parts for it. Seems you just did only the right thing and finally you don't have to spent ...$200+ for a new one. I told you all these, since I found it in the hardest way...

[bianchi1]

if it is not working you can get a brake bias adjuster from speedway racing for 35$.. you just need to adjust it yourself..not hard to do.