Posted by Jon on February 15, 1998 at 04:55:26:
In Reply to: Ford 800 Hydraulics posted by John Ward on February 14, 1998 at 14:05:22:
: I have a Ford 800 and the hydraulics won't lift
: until about 10 minutes after you start it when it
: is cold. It has been like this ever since I got it.
: I put a rebuild kit in the pump years ago, but it
: didn't help.
: What do you suggest?
Sounds like the o-ring on the unload valve has hardened and shrunk. When the oil heats up, the o-ring works, and so does the lift.