F24 Schematic Question

[Mickey_Fx]

Burt, the shifter on mine is mechanical. As for the "unknown" componentent on the schematic being the UFO controls, it may only take 3 wires to power it but with the number of switches on the control box and the remote position switches, the item on the schematic should be showing a lot more electrical connections IF it was the UFO control. My money is still on the item on the schematic being the fuel shut-off valve.

There is no "thinking" about about the external conections for the UFO control. I know where at least 3 external switches are and know how they operate. You will find one that is actuated when the 3pt lift control is pulled ALL the way back. When actuated and the fwd mounted rotary switch on the UFO control is turned in the correct direction, the tilt on the 3pt will automatically level the right arm. There are 2 other switched mounted in a housing that spans the hyd cyl for the right 3pt arm. They tell the control when the cyl is at the correct extension to level the 3pt arms. I suspect the other rotary switch on the UFO control box is connected to the connector on the rear apron next to the right fender and connects to other components on a tiller. Have seen tillers with more controls than on mine and have seen one model with electrical shift to shuttle the tiller left/right. Yep, a lot more electrical connections needed for the UFO control.

I also suspect all the UFO controls for the tiller are included in the tiller manual and not in the tractor manual. The draft control on the tractor connects to the tiller machanically and I don't see anything in the tractor manual for that as well.

Lot of guessing and experimenting to find out how some of the controls work on the tractor.

 

[Burt_Mitchell]

I finally found a reference for the fuel solenoid in the operation manual. On page 19, section 12 it says that some models have an electrical fuel shutoff and some have a manual shutoff.

I had a couple spare minutes so I popped the covers on the tractor engine open. I was hoping I'd find the electrical connection right at the injection pump. No such luck.

 

[Mickey_Fx]

Here is a pic of my tractor. Shut-off is actually a motor and not a selenoid. THink the motor works a mech on/off valve. Located below the fuel filter and aft of the injection pump.

Sory for the focus but it was a little dark out at the barn.

 

[Burt_Mitchell]

I wondered if that might be the guy. The frame for my loader made it pretty hard to get a good look at it.

There must be some type of relay inside it too. Otherwise you wouldn't need the 12v wire from the battery along with a 12v line from the switch.

I've updated the schematic again if you want to take a look. I added a fusible link from the hot terminal of the starter to the main switch and regulator. There was a little squiggle on the Murray schematic that I missed before.