Re: BTV blues...

Posted by Tim Cole On 2011/12/4 8:41:07

Dear Kevin:

Sudden loss of braking with BTV means the unit needs to be removed and serviced. It could be the compensator valve or the unit could be leaking into the vacuum booster.

As far as brake fluid shooting out the fill cap that is an indication of either air in the system or a problem with the residual check valve. Although the resovoir should not be filled to the brim because some turbulence in the resevoir is normal.

When brakes have to be pumped after a period of storage the residual check valve has leaked and probably let some air into the system, thus the excessive turbulence. So it is a good idea to go out and step on the brake every now and then to keep the system pressurized.

Hope this helps.