Recent content by Tractortech

This picture may help. Number 42 is the Diff lock solenoid. It's on the right hand side, just in front of the lift cylinder.

There are NO ECU'S involved. One fuse, o6ne switch, 2 relays and a solenoid valve with some wires in between.. As a side note.. all jd controllers have a 3 letter acronym (TLA) BCU = Basic ontrol Unit ECU = Engine Control Unit EPC = Electronic Powrquad Control So, the PTO can't be run through...

A 6400 doesn't have a BCU ! ! !....

You have the older style square solenoid and if the wire isn't plugged in it won't work.... However,,,,,,,, is that just a trick of the light, or is your tractor a little dirty?? Seriously though the crap around the solenoid will enter the plug cavity and prevent a good connection. I would start...

Now Then..... I doubt that such a machine will count miles, it may have an hour meter which is the tractor/ mower version of miles. Take a look on ebay and see what mowers of any make have on. Then, go and look at it, shake and poke things. Talk to the seller and listen to what he says.... It's...

I wouldn't start cutting any wires and making temporary earths. I've never had an earthing issue with one of these. Do you have such a simple thing as a 12v test light?? It's very rare for a 6400 to have mudguard PTO switches, so let's not worry about that.. Can you put some pictures of the...

Now Then... It's probably your potentiometer (fan speed dial) as you say. The control unit just pops out of the roof console. You can try a repair, or just get a new control unit from your dealer.. See if can navigate to ATC/ETC 005 in the Command Center, that will show the commanded speed for...

Now Then.. 20 psi..

The newer the tractor, the harder it is in my opinion. However, with a bit of lateral thinking and using the search feature, it's ok. I may find it easier having worked on the green and yellow product since I was a lad 🚜⚙️🔩🛠🤔

Now Then.. As a test, you can remove the coil from the differential lock solenoid (rhs of rear diff housing) and exchange it with the rear PTO coil (on top of the rear diff housing to the right of the top link bracket) see if it works then,,, 🚜⚙️🔩🛠🤔 If yours are both the square type, use a 19mm...

Just check the battery leads and the supply wire to the power steering motor. The 865 suffers more corrosion in certain areas as I recall. It's possible to read codes using Service Advisor which may help. I think it may also be possible to see the codes on the instrument unit,,,,, but I've...

Now Then.. Is it still in warranty?? What model is it??

Try looking for things at JDparts,,,, Hope this helps..

Now Then.. There isn't a diff lock sensor.... What is your actual problem??

What was the problem??