HST Wont move forward or back

[johnny787]

I have a 6010. I was out mowing this weekend. Mowed for 3 hours with no issues. I bring the tractor back up by the shop and let it sit for a while. When I go to start it up it will not move forward. The F and R lights will come on when i hit the petals but the tractor would not move. I tried it in all 3 gears. I shut it down and let it sit for an hour or so, go back and it drive like normal. I then work on unloading some stuff from my trailer with the loader and the tractor does this on and off for the next 3 hours. I finally gave up and parked it.

Hydro fluid level was good. Fluid and filter was changed 200 hours ago.

Any ideas? It seems like it might be electronic to me but I don't really know where to start

 

[JerryK]

If the F and R lights are coming on, that means the HST controller is seeing the pedals. Trying different ranges kind of rules that out, too. Could be just something as simple as the wires going to the transmission from the controller are just partially unplugged, but I don't know where that plug is to let you know. I would get on a creeper underneath with a good light, and take a look at all the wires going into the cases on the passenger side. That is where I think the plug is. Could be the HST controller going bad [ behind the dash on the upper driver side ], but hope you find just something got dislodged. Stuff happens...... [ branches/sticks have no sense of humor ] Good luck, Jerry

 

[johnny787]

Thanks. I will look into the wires this week. How hard is the controller to change? Any pictures on where its located?

 

[JerryK]

Thanks. I will look into the wires this week. How hard is the controller to change? Any pictures on where its located?

It is on the firewall behind the dash. We have an expert on this forum http://www.tractorbynet.com/forums/mahindra-owning-operating/389786-bonehead-award-year.html that can tell you all the details. Just try to be gentle with him, he's already been thru a lot....

 

[RNeumann]

My first look would be to see if you bumped the PTO or other lever getting off the tractor and their is a safety preventing movement.

 

[johnny787]

The pto is push button. I made sure it was off. The weird thing is while I was unloading my trailer sometimes the hst would not work but if I heald the petal down for a few seconds the tractor would slowely start to move

 

[JerryK]

Sounds like a hyd problem or internal HST thing, or some mechanical connector slipping inbetween the motor and rear end.... but, I found out years ago to look for the simple things first, like the stick thing [ loose connector, bad connection ]. Stay positive...... Could even be the fuse for the HST controller going bad, not allowing enough current thru to operate the F/R solenoids. Fuses are just mass produced and I have seen new ones go bad.

 

[johnny787]

I went ahead and ordered the hst controller that way I'll have it. I'll check all the wires and connectors this weekend along with the fuses.

Does anyone know where I can get a good wiring diagram? The one in the manual is not the best.

 

[SC2555HST]

It is on the firewall behind the dash. We have an expert on this forum http://www.tractorbynet.com/forums/mahindra-owning-operating/389786-bonehead-award-year.html that can tell you all the details. Just try to be gentle with him, he's already been thru a lot....

Lol. I'm definitely an expert on how not to do that again.

 

[SC2555HST]

Mine did this same thing several times under warranty, they fixed it, then a seal went out, and they finally replaced the whole HST. Hopefully your's is an easier fix.