SAFETY!!! Couldn't turn tractor Off! Anyone experience this?

[EE_Bota]

What good is a kill switch under the seat if a blow key fuse keeps it form working

the key should hold the fuel "on" any loss of power to the fuel kill should kill the motor. IMO Kubota was thinking backwards when they did this system

Starting a tractor on a cold day is close to a "loss of power."

I like my tractor as is. If any of you are discontented..state your model, hours, and an asking price commensurate with your discontentment.

 

[jgheck]

I agree.

I want to thank all of the last 8 posts here for responding and to so many of you that have responded more than once to help me out here. Yes, I am a greenhorn when it comes to tractors. Although I have done alot of mechanic work most of my life. I generally fix anything that fails. This has just had me stumped! I now have it apart and am looking for the short. Still haven't found it. I took a meter reading on the wire that goes to that HST light and that is going to ground. Now I am not sure if that is suppose to be grounded or not. I also checked all the wires that hook into the back lights. Every one of them goes to ground. That does not make sense to me. But all the lights work properly when hooked up. Maybe someone has some insight into that. Well I figure once I find the original electrical problem all the other stuff will work properly.

I am just going to finish lunch here and go back out and work on it.

 

[corey9212]

What good is that kill switch on the dash going to do if you fall off and are being run over:confused2:

And in a true emergency, do you think you will even have enough time to react??

What about your car? Does it have an emergency kill switch?

Or your chainsaw. Does it have a b/u kill switch??

I have to agree with Ken here. Lets get real. It is not a design flaw, or an engineering flaw. No matter how many safety switches or kill mechanisms are installed, it is always going to be possible for them to fail.

Use common sense and dont ever put yourself in a situation that needs you to kill the tractor immediatally. Even if you fall off and are being run over, and even if you manage to "kill" the tractor on the way down, ever hear of momentum??

Your right, it is useless to ME, but what about my wife who is in total freak out panic? And has to fiddle with the key to shut it off? She sees the button and presses it and is able to help me out.

My trucks all have an emergency kill switch, it's a little red button on my dash in plain view that says press in emergency and will kill my engine and activate my hazards on one truck, on the other it does the same but also activates the strobe.

Don't have a chainsaw and chainsaws have a clutch handle to stop the saw when pressed.

You are right, no matter how many there are they will fail cause they are man made. But at least they are there to help you when you need them when they do work.

Using common sense like you said is the key but if everybody had it then there would be no accidents ever. My tractor stops on a dime as soon as I take my foot off of the hst pedal even in high gear and full rpm's and pedal fully pressed, if you take your foot completely off of the pedal instantly you better have braced yourself cause you will get an instant jolt as the tractor instantly stops.

 

[chucko]

Who said I did not like my tractor. I just think that the default for the kill is backwards. I can sow you some other things that I think are not right. like the turn lights on the rool bar that stick out like mouse ears to get ripped of. But then again they are ALWAYS thing that could be better orange green yellow it does not matter... I am sure they all read the internet to get ideas of the likes and dislikes of their customers

 

[jgheck]

Is this it, or is there a lever that pulls on this? It's identified in the parts manual as the Stop Solenoid.

View attachment 236964

No I don't think that is it. I will try to get a picture of it and try and post it on here. I have never posted a picture on here, but will try to do that tonight.
This may be helpful for others that need to shut down the machine quickly. It definitely works instantly. It would be very simple to put a little cable on here and be able to control it from the seat in the tractor. It is strictly mechanical and requires no electricity. My motto is KISS. It works for me.
Thanks for responding. This forum is great.

 

[corey9212]

A BUTTON to press implies an electrically operated circuit. Guess what? A blown fuse or other lack of power and the button won't work any better than the ignition switch. We are right back where we started, aren't we?

Study Murphy's Laws a bit. Everything electrical or mechanical can fail in one way or another. Put too many safety interlocks and then the thing won't run and people will be complaining. My dad's lawn tractor had an "operator present" switch on the seat. Every time he hit a bump, the tractor died It didn't take him long to bypass the switch.

I'll bet you could mount a small CO2 extinguisher on the ROPS. Personally, I'm not worrying about it though.

Ken

Yes it does but what I'm saying is putting all of them on one fuse would be a flaw in my opinion, what good is all those safety items if a single fuse can disable them, put the switch on a different circuit and if one fails then chances are the other one will still work being on a different fuse that still works.

Things will fail that's a given but if they are separate then you can still save you butt with the other one.

Rofl, you haven't sat in my tractor, it has a cab instead of a rops and it is not for someone clostrophobic.

The biggest thing is the op got his problem solved, is safe and learned more about his tractor

 

[Ken45101]

Rofl, you haven't sat in my tractor, it has a cab instead of a rops

It may have a cab, but it still has a ROPS if it was made in the last 30 or so years. A cab is not a substitute for a ROPS.

Anyway, I looked at the fuel sight glass on my M5040 fuel line and there is a valve on the top of it. I would guess that will shut off the fuel flow. I'm not going to test it since diesels are often difficult to restart if out of fuel.

Anyone wanting a safety shutoff should look at their fuel sight glass, or check your manual for the indication of any other emergency shut off.

Ken

 

[BobRip]

As an electrical engineer, I know that a broken circuit in a safety system should shut it down with rare exceptions (brake circuit, electric magnet on a crane, etc.). This system is wired backwards. If this were running a fire pump it might be correct. A tractor, no.

 

[David_Kb7uns]

You guys need to pull your heads out, really, if you wire up all diesel to turn off when a solenoid or circuit fails then you will be having many more accidents and dangerous situations. Imagine running heavy eqiuipment on a hill or a yarder hauling logs and to have the engine solenoid fail and drop something. Like it is said they have been running this way for a very long time and the only reason the Key Stop circuit is there is to work with all the nanny control lockouts for the seat, PTO and shifter switches.

You must remember these are industrial engines made to run hours on end by themselves with a low failure rate. They do that very well and I still have no personal knowledge of a runawy Kubota engine, now if we start talking Detroit Diesel 2 strokes that is a different story.

Anyway here are the stop levers for a BX2230 , G2160 and Grand L3130, the RTV has a load of wood so I cannot get it.

 

[California]

As an electrical engineer, I know that a broken circuit in a safety system should shut it down with rare exceptions (brake circuit, electric magnet on a crane, etc.). This system is wired backwards.

That's the way I see it. The method that the manual defines for shutting it down, should shut it down. No exceptions - unless the owner has redesigned it then it's his problem. (Defeating the seat sensor etc.) Even in that case the original designer should anticipate some of the stupid things an owner might do. For example, all other safety systems shouldn't disappear if the owner modifies one of them.

And I like the point that a freaked-out wife or minor child should be able to find something obvious to shut the thing down if your are under it upside down. On another board someone asked everyone's advice for a back-country first aid kit. I mentioned that the first thing anyone sees opening mine is a one page big print checklist for a first responder. I know what it says, I hope I'm never so rattled that I need to read it before responding. What it's there for is if some 14 year old kid has to learn first aid right there in that moment and take responsibility for the situation because I'm the one who is down.

Shutdown mechanisms are safety-related. They should be obvious, and as fool-resistant as the designer can devise.