3pt help....

[chriswh]

New member but long time lurker.

I have a 3810 thats been no trouble but after replacing 3 hoses on my loader today the 3pt is acting up. I'm no career mechanic but I know my way around a shop, this however has me stumped. My guess is debris in the control valve but lets see what you all think.

With draft control disengaged I have about 3 inches of room on the lift control until it takes off all the way up, fully lifted. When it gets to the top, the engine bogs down and pump whines. When draft control is engaged you can pull the control lever nearly to the top before any response, again it goes all the way up and tries to continue pumping. If I push the lever down half an inch it will drop slowly and stop just as normal. While descending however the ram is always in the neutral position regardless of control lever position.

Link to YouTube video for a visual on the problem..... Yanmar 3810 3PT hydraulic issue - YouTube
Any help at all is greatly appreciated..the good news is I can still lift my flail and the 3pt floats in order to mow, I'd like it to work correctly though.

 

[Tx Jim]

I think there is no correlation of replacing hoses on loader and uncontrollable 3 pt hitch. If engine is laboring when 3 pt is fully raised the 3 pt control valve isn't going into neutral. Does your tractor have an external 3 pt feedback linkage and if so are the new hoses obstructing it's function??

 

[chriswh]

I think there is no correlation of replacing hoses on loader and uncontrollable 3 pt hitch. If engine is laboring when 3 pt is fully raised the 3 pt control valve isn't going into neutral. Does your tractor have an external 3 pt feedback linkage and if so are the new hoses obstructing it's function??

The new hoses were to rams on the loader. I wasn't working anywhere near the 3pt. The draft linkage is exposed but I don't believe there is any interference going on.