DK40SE HST - neutral safety switch problem

[MotorSeven]

From the moved thread;

Went to put hay out this AM and tractor would not start. Glow plugs, all dash lights and all other lights work, battery is 2 months new. I suspect the neutral safety switch because I had to do the jiggle routine a while back. I sprayed some brake cleaner down onto the switch shaft and jiggled for about 5 min, then it started in Medium Range(not Neutral). Off to town to see if my dealer has one. So it looks like the easiest way to change it will be to remove the seat/pan?

from Koua;

"You do know that the "switch" is not a switch, it is a Potentiometer on the Hydro model. with 5 volts coming out of the cruise unit to one side of the 2000 ohm pot the other side to ground, and the slider of the pot goes back to the cruise unit, that detect its position by the voltage being fed back to the cruise unit from the slider (center wiper) of the pot. "

This is the switch that is on the shifter for Low, Medium & High range, so it this the one you are talking about? There is another one on the pedals that I assume would be tied to the cruise control.

My dealer had quite a time looking this part up since Kioti does not call it a neutral safety switch and the illustrations don't show the shifter lever at all. I am headed down to the quonset now to go over the shop manual which I should have done first, but we had 4" of rain last night and the pastures are under water again so I got sidetracked.

 

[murphy1244]

The one on the pedal is for the cruise. Maybe item 20 on this OEM Parts

 

[MotorSeven]

This one is straight down on the left hand of the drivers seat behind the fender well. It is round like a small hockey puck and has a shaft going through it that goes through the shifter lever at it's apex. There is also a pigtail with a square plug going to the wiring harness.

I am headed down there now to pull the seat/pan so I can get to it...................

 

[k0ua]

This one is straight down on the left hand of the drivers seat behind the fender well. It is round like a small hockey puck and has a shaft going through it that goes through the shifter lever at it's apex. There is also a pigtail with a square plug going to the wiring harness.

I am headed down there now to pull the seat/pan so I can get to it...................

That is the one, it is a POT. with the lever tied to the range shifter lever to move it thru its arc.. It is not a switch.. It also is the device that changes the dash lights from L to N to M to N to H based upon the voltage you select with the Potentiomenter as you move the lever thru its arc. Mine wont show the gear you are in when it gets below about 15 degrees.. I started it up at about 7 degrees this morning it started fine, but did not show the range until the tractor warmed up about 10 minutes. then it just pops on with whatever range you are in. I think the Cruise unit that this feeds may be just too cold to work right. I have seen this now about 3 or 4 times when I go operate in the extreme (for us) cold. Sorry I just got in from plowing the road and driveway.

 

[k0ua]

But I will say this, when my indicator light does not come on, the tractor will still start, in fact it will start in any range as well as Neutral. Which is not the same problem you have, but I believe they are related.. As soon as the tractor warms up, the light will come on, and the tractor will no longer start in gear, only one of the two N positions.

 

[k0ua]

You can check the POT with an ohmmeter, should be 2000 ohms between the outside legs, and of course variable ohms from the center to each end depending on where the pot slider is on its rotation.

You can watch an analog ohmmeter and see if there are any "dead" spots in the pot, or if the ohms are smooth thru its rotation. If you see any dropout "dead spots" then either try to clean it with some wd40 or replace it.. If you don't see any problem, my guess is it could be a temprature problem.. My problem as noted above is never manifest above freezing.

 

[MotorSeven]

It's called a "Range Shift Sensor", and you are correct it's on the Cruise Control circuit. After spraying it down it seems to be working, so I am going to order a new one(along with an extra ignition....just in case) before I take this one off. I will ohm test it before I remove it & I wonder if it is rebuildable/cleanable, or a sealed unit?

Also I was wrong it's not a puck with a straight shaft, it's a puck with a paddle arm that hooks to the linkage. I appreciate the info it helped me track it down a lot quicker.

 

[MotorSeven]

 

[murphy1244]

well, it worky?

 

[k0ua]

I love their measurement instructions 2000 ohms converted
I scratched my head on that one for a while, I guess they mean 2000 ohms variable.
Things just don't always translate from Korean all that well.

I don't know if it is sealed or not, I have never actually seen one, just the schematic and the pictorial diagram.