I posted a while back about the 3 point lift
on my 63 ford 4000 having issues being jerky
while lifting a post hole digger. The lift
always had plenty of power but was jerky.
Tonight I drained the fluid and found it was
contaminated with water. It was a very
light brown chocolate milk color. While it
was draining I pulled the small cover off of
the top plate. I had bought a top cover
gasket kit and figured I would at least
replace the small block off cover o rings.
I replaced them and here is where I think I
may have screwed up. There is some sort of
valve under that cover. I unscrewed the cap
that holds 2 springs under it thinking maybe
there was another seal there. There wasn't
so I put it back.
I then refilled the fluid and started the
tractor. The lift didn't work at all so I
pulled the Allen plug on the pump and bled
it. The lift now raises but very slowly and
has now power. I can push it back down by
hand. When I shut the tractor off the lift
instantly drops back down. It is like there
is a one way valve not allowing pressure to
build or be retained. I don't see any leaks
coming from the cylinder through the fill
hole.
What should I check next or what did I screw
up? I doubt an internal leak since it
worked before. Any idea what that valve on
the small top plate is for?
Keith
on my 63 ford 4000 having issues being jerky
while lifting a post hole digger. The lift
always had plenty of power but was jerky.
Tonight I drained the fluid and found it was
contaminated with water. It was a very
light brown chocolate milk color. While it
was draining I pulled the small cover off of
the top plate. I had bought a top cover
gasket kit and figured I would at least
replace the small block off cover o rings.
I replaced them and here is where I think I
may have screwed up. There is some sort of
valve under that cover. I unscrewed the cap
that holds 2 springs under it thinking maybe
there was another seal there. There wasn't
so I put it back.
I then refilled the fluid and started the
tractor. The lift didn't work at all so I
pulled the Allen plug on the pump and bled
it. The lift now raises but very slowly and
has now power. I can push it back down by
hand. When I shut the tractor off the lift
instantly drops back down. It is like there
is a one way valve not allowing pressure to
build or be retained. I don't see any leaks
coming from the cylinder through the fill
hole.
What should I check next or what did I screw
up? I doubt an internal leak since it
worked before. Any idea what that valve on
the small top plate is for?
Keith