BX 1860 died

[UnclePaul]

Does your tractor keep running after you release the parking brake? If not maybe you should look at the parking brake safety switch.

 

[radioman]

Parking brake has no switches- doesnt matter if it set or not to start it.

 

[oldnslo]

Can you access the wires to the fuel shut off solenoid? If yes are you skilled enough to jumper this direct to the battery and then see in the engine runs. If yes you do have an electrical problem and will have to start tracing wires.

Since today is Monday I guess you can call the dealer.

Good luck

 

[radioman]

Can you access the wires to the fuel shut off solenoid? If yes are you skilled enough to jumper this direct to the battery and then see in the engine runs. If yes you do have an electrical problem and will have to start tracing wires.

Since today is Monday I guess you can call the dealer.

Good luck

I think the OP stated the tractor runs, but won't work with pto on. its a defective safety switch kickin in somewhere

 

[oldnslo]

Radioman,
I agree with the safety switch or wiring but this would confirm that when he engages PTO/ tries to move the tractor still runs. Would also allow him to get the tractor loaded if necessary for taking to the dealer.

Not saying it is the safest idea but by passes the safeties and gets them out of the circuit.

Roy

 

[David_Kb7uns]

One common misconception I keep on seeing is that people think the shutoff solenoid needs power to run the tractor, IT DOES NOT! I have seen two types of fuel solenoid systems on Kubota engines, there is an internal type connected to the fuel rail that has three wires, one being common with a small coil to run and a larger to kill the engine. The second is the external solenoid that is only energized to kill the engine. My BX2230 with a D902 engine has this type.
The kill solenoid has two circuits involved. The one directly controling the solenoid with a timed relay in it that is controlled by the loop circuit that goes to all the switches in the second circuit. When this relay sees a pulse, even just a fraction of a second, in the switch circuit it closes the relay and the relay will stay energized for around 5 seconds or so, long enough for the fuel solenoid to shut off the fuel and all engine motion to stop.
Many people hear a click after their BX tractor shuts off, the click is the relay releasing the fuel shutoff solenoid. Most small diesel engines without common rail injection need ZERO (0) power to run. If your tractor if having trouble running and you have the external type solenoid with two wires you can disconnect the wires and the engine will keep running, also if you cannot shut the tractor down with the "KEY STOP" you can also manually move the plunger and lever to shut the fuel off. Everybody should learn how to shut their tractor off using the stop lever in case the key circuit fails.
When the tractor is dies you need to listen to see if the relay is energizing and killing the tractor , it will be an electrical problem. If it just dies with no relay clicking, be looking for a plugged fuel filter break in fuel line or lift pump not operating. Have herd alot of problems with the BXs having switch or broken/shorted wires in the switch circuits so you may start there if all else fails with checking the fuel delivery.

Hope this gives some guidance.

David Kb7uns

 

[wrooster]

Everybody should learn how to shut their tractor off using the stop lever in case the key circuit fails.

where is this lever located on a BX1860? what should i be looking for?

thanks
wrooster

 

[David_Kb7uns]

Follow the injection lines back to the injection pump. There should be a large cylinder looking device with wires going into one end and a plunger on the the other with a rubber boot. The plunger connects to the fuel shutoff lever. When you turn the tractor off you will see the plunger retract, that is what you can manually do if it fails.

David Kb7uns

 

[medicshawn]

Problem Solved and it was my fault. It was the OPC Timer PN TD060-30500 65.00.

The OPC timer is a electric delay or buffer, It's designed so if you hit a bump or lift off the seat momentarily the machine doesn't cut off.

I had moved my lift arm on the right side up even further and zip tied it in place. I was having problems with the lift arms interfering with the tow behind trac vac I was using to pick up leaves. The lift arm had been shoved into the small box/relay and crushed it. 65 dollars and 20 minutes later I was back in business. I had managed to rig my neutral safety switch so I could drive while the safety switch thought I was still in neutral.

I'll post a pic of the little box later. Thanks for all the help.

 

[dennisgw]

Hallejeuh! It's always the simple things.

 

[jimmer2880]

Glad to hear it's solved.

And - 2nd to "please post pics". That will help the rest of us to better learn from your mistake.

 

[medicshawn]

It's the little box bolted to the back of the seat near the top link. I'm gonna see if there's enough wire to move it to the seat side where it's better protected
http://www.tractorbynet.com/forums/attachment.php?attachmentid=188053&stc=1&d=1290481458

 

[leonz]

Ouch!!!

It sounds like you need to remove
the lower link arms while using the
Trac Vac.

 

[radioman]

wow- I would have never guessed. glad you found problem.

 

[David_Kb7uns]

Sometimes it would be nice to go back to some of the earlier Kubotas without all these supervisory circuits to go bad.

David Kb7uns