Rich's Toys Service your hydro-vac like the service book says,Jim Carter himself told me to use hydraulic jack oil from my local FLAPS in it. Fixed it right up,have 2 that are 73 yrs old work fine. That leather cup in there gets dry,needs lube.
I am assuming the Jack oil goes into the port plug on top of the hydrovac. How much Jack oil do you put in? Is it fill till it overflows, then put plug back in after it stops draining? I have never driven mine or started the engine yet. My master cyclinder was froze, I removed it today. I don't know if the hydrovac works or not. Willing to try it before I invest in having it rebuilt. I may just bypass it for the time being or hopefully it will bypass it self internally as it is designed to do. I just bought my 1953 6400 the first of June. Haven't had much time to even look at it let alone work on it. This truck needs a lot of restoration time before it goes on the road. I really need to able to move it in & out of my shop & would like to have brakes when doing so. I am getting close to being able to try to start the engine. Thanks for any help. The above links for rebuilders & parts has been a great help.
