Disappearing Boost

["Al Powell" <APOWELL@agcom.tamu.edu>]

John Winkelman's brake warning light comes on & off, and his brake 
boost disappears.....

Hmmmm....I wonder if some loose debris in your hydraulics might be 
bblocking open the check valve in your bomb?   Or maybe that valve is 
sticking open?   

The bomb does have a check valve which maintains pressure when RPMs 
drop (or at least I think that's the function).  Ever since I changed 
mine, sometimes the light stays on UNTIL I give the brakes a quick 
stab.  I attribute it to that check valve.....but I'll be interested 
to see what others have to say.  It might be worth disconnecting the 
return line to the bomb, draining the fluid, and re-charging the 
reservoir with fresh fluid.  (?)

Al Powell                           Voice:  409/845-2807
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