John Deere 4310 does not go forward or reverse

[pmsmechanic]

Fault code 21. Machine does not drive. Caused by "Controller sees forward input but does not receive a back feed from forward pressure transducer". Test forward proportional solenoid and forward pressure transducer.

 

[jgraf]

Thanks for the info.
My reverser switch is a hand switch up by the steering wheel, this module was replaced last year.
There is also a electrical/mechanical switch on the clutch telling it the clutch is out. I just replaced that on Saturday.
It seemed to work after I replaced that switch but only for about 2 hours. That is when I got the error code.
Where can I get a John Deere repair manual at a reasonable price?

thanks again, JIm

 

[pmsmechanic]

TM1985 is the paper manual and around $150. TM1985CD is the CD and it was about $75.

I have gone to my local dealer and they have printed parts of manuals for me. They will also loan out their paper manuals too at times.

 

[sparky991]

I know this is an old thread - was the problem resolved?

I have a 4310 ehydro, and it ran fine but wouldn't move. I got code "short long long short" - supposed to be the MFWD sensor. I replaced that, didn't fix it. Turns out, it was the hydraulic oil rubber manifold collapsing. I just happened to glance at that as I was walking around the tractor at some point. The collapse was caused by me not fully cleaning the screen filter under the mid-tractor. I had cleaned it, I thought pretty well, at the last service. But when I took it back out, it had a coating of what looked like light grey paint. I used parts cleaner and a medium stiff brush to carefully clean it. Took quite a while but I cleaned until I get a lot of sunlight through it. Put it back, refilled oil, tractor works great.

 

[TBN Support]

Since the thread has been revived, I'm going to move it over to the John Deere section. It might be helpful to someone over there.

 

[snoopygarcia792]

I'm going to take it as a one long and three short as there is no other code that comes close. That code is fault code 9 which is "simultaneous command from forward and reverse". Reset action is that "error status will reset when both pedal commands return to zero"

I have no experience with this but am thinking that you have something wrong with one pedal.

Let me redo this as I'm giving you info for a ehydro trany.

I'm having the same issues with my 3520 but have no codes.I was looking at the Hydraulic schematic and its shows a Change Flow Filter .I guess you can clean this out?I am going to try this next .The only problem is I am out of town for two weeks.So I wont have results till then.