[Farmall] Farmall 340 Loader Question

[Greg Hass]

A

The first thing that comes to mind is a partially open relief valve, or 
second, a worn pump although I don't think so. Possibly, a somewhat pluged 
filter; although if the loader lifts at normal speed empty probably not the 
filter. My 574 did that once. It would only lift the corn planter if the 
tractor was wide open.  Took it to the dealer and it was the relief 
valve.  I don't think you are going to get anywhere  until you check the 
pressure of the system. My brother had a 340 for several years but I don't 
remember what the pressure of that system should be. To check the pressure 
you could take it to a dealer if one is close or do it yourself. All you 
need is a one foot piece of hose, a coupler to plug into the tractor, and a 
gauge. I just looked in the Northern Tool and Equipment book and a 5000 PSI 
gauge is under $20 which is not the end of the world. Tell us what you find.
Greg Hass