john deere 2940

joe460 · Dec 19, 2002

my 2940 all of the lift just quit all of the suden other day lift arms and hydrulics all quit at once anyone no what this might be

Woodbeef · Dec 19, 2002

When was the last time you changed the hydraulic fluid and filter?

Was it making any funny noises prior to no hyd functions?

How many hours are on the tractor?

normde2001 · Dec 19, 2002

Did it literally quit "all of a sudden", or did it work when you left it and not work when you came back? Yanmars have a knob under the seat that stops the flow of fluid and locks the hydraulics in place. Maybe JD's do also. They can mysteriously get locked when you leave the tractor alone.

Estif · Dec 21, 2002

My JD (950) has that knob. I've been led to believe that most tractors do. But my experience is not particularly broad. Stuck in the up or down position, or somewhere in between? What all hydraulics other than the 3pt? Power steering, too? FEL?

Steve

wogdalton · Dec 12, 2013

I have the same problem. I have disconnected the supply line to the front hydraulic pump and there is no oil getting to the pump. Is there a valve or something keeping it from coming through? I have changed the hydraulic filter and oil and have cleaned the screen.

Tx Jim · Dec 13, 2013

wogdalton said:
I have the same problem. I have disconnected the supply line to the front hydraulic pump and there is no oil getting to the pump. Is there a valve or something keeping it from coming through? I have changed the hydraulic filter and oil and have cleaned the screen.

If you're not getting any trans pump pressure to frt pump there could be one of several reasons. Failed trans pump(broken gear),cracked/leaking supply tubes that furnish oil to ind pto or hyd hi-lo,stuck hyd filter relief valve