transmission temp problem

[AKfish]

After a bit of thought... pressure test the system. Check the radiator cap and the thermostat. You might have a worn out cap and/or a sticking thermostat. Also look for any signs of coolant in the engine oil or vice versa - oil in the radiator/antifreeze mixture.

You see anything like those conditions - you've got more serious issues like cylinder pitting, head gasket leaking or a cracked cylinder head.

You might also consider draining the system and using a radiator cleaner to flush the radiator and refill with new coolant. Especially if this hasn't been done in a number of year's.

Along this same line of action - you could also remove the radiator's and have a local shop (dealer might be able to do it) boil the radiator's in a cleaning tank. Not as routine a procedure as was the case a number of year's ago - but when radiator cores are damaged or begin to seperate from the housing - they are typically "boiled" before re-soldering.

IMO - if you take things all the way to this last level - replace the water pump and thermostat, too.

Beginning with blowing the radiator's out with compressed air and running in a lower gear, etc. the previous steps are what I would do if I were trying to resolve a "hot tractor" problem.

Good luck.

AKfish

 

[JasG]

i just bought a 6210 john deere cab tractor with 640 loader. when i got home with it, i started pulling a sub soiler after about 30 to 45 min the transmission temp light started blinking at me. i killed the tractor waited about 1 min and restarted the tractor after 10 mins light started blinking again. any ideals??

How many hours are on this tractor?

If it over heats and you did not lose engine coolant I would not shut it off. Just stop throttle down and let it idle to cool it.

How is the engine temp when this happens?

I would think most likely a plugged filter, screen, or fault sensor as others have said. Some Deere tractors have an internal screen that can plug up, you will need to find out if this has one and how to access it.

 

[pjbci]

Im thinking its just an instrument faliure since its not hot to touch. The light should not come on below 225 degrees.

 

[twhite85]

I called jd dealer and he said he would bet on a bad sensor since the light was flashing and not on solid. I bought a new sensor and plan to put it on Friday a long with changing hydrolic fluid and both filters

 

[twhite85]

It has 4500 hrs and the engine temp is normal

 

[Tx Jim]

I called jd dealer and he said he would bet on a bad sensor since the light was flashing and not on solid. I bought a new sensor and plan to put it on Friday a long with changing hydrolic fluid and both filters

I agree with the JD dealer. Bad sensor or loose wire.

 

[twhite85]

changed fluid filters and sensor and light still came on after a while of pulling sub soiler

 

[pjbci]

Sounds like your machine wants to act like mine do. I know that sensor wasnt cheap.

 

[twhite85]

It was about 40 dollars. The transmission. Is warm to the touch but it is not near as hot as the oilpan was

 

[pjbci]

The last 2 JD sensors I had to buy were over 200 each. Glad yours was 40 but you still got problems. I dont know much about it but what I do know is the light is supposed to flash @ 225 degrees then stay lighted @ 240. Not sure but have been told it'll shut down @ 250. If you can touch your transmission, then its nowhere near 225. Something in that controller is screwing up and its probally going to take a JD mechanic with JD electronics to figure it out.