Hi Gents,
I have been searching many posts from others in regards to 3 pt lift issues.
I recently acquired a 1982 7710 with the dual pump setup and (2) sets of rear remotes. The lift and remotes work, but.....
The lift will raise a heavy implement to full height, but as soon as I drop the lift lever slightly and stop, the lift arms will pulsate with enough force to shake the tractor. Push the lift control to full up and the pulsing stops. Remotes seem to have good power.
I have yet to test the pressure on the main pump. All fluid and filters have been changed. I also pulled the priority pack, disassembled, cleaned and re-installed. Nothing plugged that I noticed, but the sequencing valve seemed to be tight in the bore. I removed any sharp edges / burrs off the valves with ultra fine emery.
Another thing I noted, is that when the fluid warms up to temp, the lift will not raise the implement nearly as high. Seems like there is a lot more leakage. Lift cylinder seals?
What would you suggest as my next move? I will see what pressure I get at the main pump. Can I just put a gauge at the remote to test?
Thanks!
- Dave
I have been searching many posts from others in regards to 3 pt lift issues.
I recently acquired a 1982 7710 with the dual pump setup and (2) sets of rear remotes. The lift and remotes work, but.....
The lift will raise a heavy implement to full height, but as soon as I drop the lift lever slightly and stop, the lift arms will pulsate with enough force to shake the tractor. Push the lift control to full up and the pulsing stops. Remotes seem to have good power.
I have yet to test the pressure on the main pump. All fluid and filters have been changed. I also pulled the priority pack, disassembled, cleaned and re-installed. Nothing plugged that I noticed, but the sequencing valve seemed to be tight in the bore. I removed any sharp edges / burrs off the valves with ultra fine emery.
Another thing I noted, is that when the fluid warms up to temp, the lift will not raise the implement nearly as high. Seems like there is a lot more leakage. Lift cylinder seals?
What would you suggest as my next move? I will see what pressure I get at the main pump. Can I just put a gauge at the remote to test?
Thanks!
- Dave