Jd 6910 lift

[will6910]

Having a issue for about a year now with my tractor. When lower lift it won’t lower unless u stand on the lift arms Or if unhook pickup hitch when unhooking a trailer or tanker it goes down fine then. Then lift it back up after to lock back in. Then it stops at top and won’t go down. Have the lift arms and rods and all linkages well oiled and greased yet it still does it. Any ideas what could be issue and is it likely to be something expensive
Thank you

 

[Tractortech]

Now Then..
Take the pick up hitch rods off completely ( unless you're certain they're straight and free ).
It's not uncommon for water to get in the top of the lift cylinder, cause rust & nip the seals

 

[del_boy]

Sounds like maybe the oil seals in the lift rams have gone hard

 

[john432]

If it isn't one or both of the lift arms that have gone stiff.then the problem must be in the hydraulic valve not letting the flow back fast enough. Could try connecting the lift rams to a spool valve to try. It would determine the stiff linkage theory.

 

[will6910]

Now Then..
Take the pick up hitch rods off completely ( unless you're certain they're straight and free ).
It's not uncommon for water to get in the top of the lift cylinder, cause rust & nip the seals

Il take them off and see. Had them shortened to help lift hitch up better 3 or 4 years ago. Does very little hitch work these days

 

[whiddy]

Do the lower lift rams pins take grease ok? sounds to like they might be binding, strip down clean pins. might have to use some heat!

 

[will6910]

Just taken off the lift rods and still the same. All grease nipples takes grease yeah

 

[sticky]

the seals in the top of the rams are binding IMO

 

[will6910]

the seals in the top of the rams are binding IMO

Itl be one off many things thatl be added to the list for mechanic. Front suspension I think needs a calibration or something