Hydro Range Switch Question

Texasmark · Nov 8, 2020

2016 purchase, new 4052 Hydro. with cab...may be an R series, don't remember. Neighbors live in town, professional, mid life folks. Have an annual JD service contract. Probably doesn't have 300 hrs. Only use is mowing and moving 4x6 round bales. Have been mowing their 50+ acres off and on all summer and currently with no problems till today.

Got a call to come and help....first time they asked me to help on that tractor. Said went to use it today and it rolls/drive power in Mid hydro range, but not in low nor high. I never touched the thing and only place I would start would be looking for the obvious. Don't know about how JD handles fluid changes on their service contracts if that comes up as a question....when was the last TDH oil/filter change?

Ideas would be appreciated as I told them I'd come over and see if I could help the next time they are out. They said it would be Tuesday.

Thanks,
Mark

airbiscuit · Nov 8, 2020

Not exactly the same model, but if it has an eHydro, you might be looking at something like this?

https://www.tractorbynet.com/forums/john-deere-owning-operating/294711-jd-4310-e-hydro-wont.html

Texasmark · Nov 9, 2020

I pulled up tractor data . com and the 4052 does use an eHydro. in their R model, the deluxe model which this is. I printed out your recommendation and will browse over it. I will take it with me and show it to them when I go tomorrow. I will see if the owner's manual....about an inch thick, has any consumer correctible solutions and if none of this works I'll give them the bad news......time to call JD for a pickup and repair.

Really appreciate your response. Dead on. Thanks from me and them....although they don't know they have a reason to thank you.....yet! Grin.

PS: I did a quick browse of the 4310 comments prior to deciding to print out the whole thing. In the comments, the replier mentioned something about checking wiring and connectors and .......... They have chickens and chickens need feed and they have rats, big rats as a result. Since this machine worked last week and didn't this week, sitting in a new concrete floor, totally enclosed metal building, and this is the time of the year for rats to move indoors, going to bet you that rats have invaded their tractor for their favorite meal.....plastic (and rubber back when it was the norm) wiring insulation!

Texasmark · Nov 11, 2020

Followup: Went over yesterday and solution was an easy fix. The control lever inside the cab is connected to a shaft that is connected to the actual shift lever accessible from under the cab from the rear....apparently an interconnection point for when, in the assembly process, the cab is married to the chassis. The interconnection bolt was secured with a dimpled type locking nut...looks like a regular nut but their is a detent in the side of one of the faces. The nut was gone and the bolt has fallen out of the frame side of the shifting lever(s). Reinserting the bolt and using a nylon insert locking nut solved the problem. Piece of cake. Not the first time I have had this type of locking nut not lock to the point that you can put it back on and run it down with your fingers.....showing how it fell off in the first place.

beenthere · Nov 11, 2020

The nut was gone and the bolt has fallen out of the frame side of the shifting lever(s).

If gone, how do you know it was a dimpled nut? Must have found the nut and wondered where it belonged.

Glad to hear the end of the story and problem found, and fixed. :thumbsup:

airbiscuit · Nov 11, 2020

Zebrafive · Nov 11, 2020

beenthere said:
If gone, how do you know it was a dimpled nut? Must have found the nut and wondered where it belonged.

Glad to hear the end of the story and problem found, and fixed. :thumbsup:

I too am glad it was an easy fix!

MAYBE the NEW nut he bought from a JD dealer was dimpled?