Perhaps it's leaking into the brake booster housing. was the master
cylinder replaced with the rest of the system overhaul?

One way to see is to stick some clear rubber hose into the lowest part
of the body of the booster (go in where the vacuum booster line
attaches) and apply vacuum to the hose and see what, if anything,
comes out of there.

jules
'75, '78 westies
troy ny

On Fri, Mar 2, 2012 at 4:19 PM, craig cowan <phishman068@gmail.com> wrote:
> Before comissioning my '90 automatic bus back to the road, the entire
> brake system was gone over
> The system works great. The pedal feels firm and everything seems to
> be working properly.