JD 5085M PTO disengages

ernram · Jan 3, 2014

Hi everyone,

I was checking my PTO on my 2009 5085M yesterday and it would disengage after about 10 seconds. Has anyone experienced before? I am thinking it has to be electrical (spool valve or solenoid of some sort), but I have no idea the location of the valve / solenoid.

Can someone point the way please?

Thanks,
Ernie

Edward. S · Jan 4, 2014

ernram said:
Hi everyone,

I was checking my PTO on my 2009 5085M yesterday and it would disengage after about 10 seconds. Has anyone experienced before? I am thinking it has to be electrical (spool valve or solenoid of some sort), but I have no idea the location of the valve / solenoid.

Can someone point the way please?

Thanks,
Ernie

I would say you need a new PTO switch. You could also ask your dealer to warranty it since its defective if its still under warranty.

AM118802 - $41.79

ernram · Jan 4, 2014

Thanks Ed. I'll give it a shot. Given how repeatable it is with respect to the duration prior to cutoff, it seems more of a thermal type event such as a solenoid overheating or something to that effect.

The switch is the lowest cost solution, and I guess I can climb up the money tree to the next costlier component if this does not fix it.

Tx Jim · Jan 4, 2014

Are any error codes displayed. I'll guess faulty pto shaft speed sensor or loose wire.

ernram · Jan 4, 2014

No codes. The amber PTO light goes off on the dash at the same time I hear the click of it disengaging.

So I am kinda with you that something is telling the computer to cut it off.

Do you have a general location I can look for this sensor?

Thanks Jim

ernram · Jan 4, 2014

Just found this on Google

http://www.****************.com/forums/utility-tractors/4312-6420-power-take-off-disengages-2.html

Seems like it is going to be fun

Edward. S · Jan 4, 2014

ernram said:
Just found this on Google

http://www.****************.com/forums/utility-tractors/4312-6420-power-take-off-disengages-2.html

Seems like it is going to be fun

Just read a bit of that forum post, a 6420 and a 5085m are completely different tractors so I doubt your tractor will be having this situation. Plus a 5085M is much newer than a 6420 and these problems wouldn't be showing up this early.

ernram · Jan 4, 2014

Ed...thanks for the feedback. I guess i was just grasping for straws.

I'll look for damaged cables in the morning and then move to the speed sensor. I have been looking for the location on the diagrams on JDParts for the sensor, but have not been to find it.

And pointers?