kb3csw!

As usual, Ralphy has good knowledge. I have a 46 2 ton and I'm not sure if the Hydrovac is working as I haven't had a load on the truck that required much in the way of brake power. I have driven it about 3000 miles and have no problem with brakes. The manual tells how to service/overhaul that Hydrovac unit but it's kind of a 'fussy' thing so why bother if the brakes work OK.
Cheers, George