Rolled my 3240, and it ran till it blew ??

[Chilly807]

If you're looking to gear up an air shutoff, think about the last time you tipped a Shop-Vac on it's side. The float ball to cut off suction before any water reaches the motor drops into place and cuts the air-flow. The same kind of setup would work on the tractor, and the size is about right considering the airflow through most Shop-Vacs.
It's also automatic, gravity controlled, so no switches or cables required. How it would be over a bumpy field I don't know..


How you'd plumb it in is another story, but I think it would do the trick.

Come to think of it, the Shop Vac might be a good turbo-charger if you can get the power to it...

Sean

 

[Dead Horse]

there is already a proven system out there that has been in use for years, the emergency air kill is a simple butterfly valve that can be triggered in a number of ways, key off, tilt switch, over-speeding RPMs, or a simple manual kill, we don't need to "reinvent the wheel" , on my particular tractor I will need to reroute the crankcase vent but even if it's not the simple air kill will have the same effect as CO2, blocking the air intake with rags, exhaust gas, etc. the Air Kill WOULD have stopped the engine, yes it would have continued sucking in oil through the vent tube but it would not get enough air to continue running.

This air kill is required on all diesel engines that operate in hazardous environments, gas well locations, chemical plants, etc., I've seen them on everything from small water pumps to D9 dozers.

As I said I appreciate the ideas and if you want to rig up some kind of "rigged" CO2, fire extinguisher, exhaust gas re-router then that's fine but there is a already a "proven" system available.

The Deep Water Horizon that blew up in the GOM had diesel generators that went into over speed from ingesting "natural gas" venting from the well head break and did not have fail safe on them..... when they blew, that ignited the rig fire, according to the guys wo made it off the rig.

 

[Chilly807]

The Deep Water Horizon that blew up in the GOM had diesel generators that went into over speed from ingesting "natural gas" venting from the well head break and did not have fail safe on them..... when they blew, that ignited the rig fire, according to the guys wo made it off the rig.

That's interesting, I hadn't heard that scenario. Most of our gen-sets (Navy) have an air flap system to prevent runaway on lube oil, but some of the bigger stuff (10,000 HP propulsion diesels) uses compressed air to blow fuel out of the fuel system for emergency shutdown. That wouldn't have prevented the over speed, as in the case of the BP oil rig. Something to keep in the back of my mind next time I'm working around one.

Sean

 

[_RaT_]

My Dad had a Volkswagen Rabbit Pickup that would do that. It would be going along fine and suddenly go full tilt with the key off no diesel to the engine. In doing so it would completely inundate the air filter compartment with oil. VW had a work around where they stopped the vacuum that was creating the problem via hoses.

I'm wondering if the OP could have stepped on the HST pedel and tried to stall it? I realize the tractor was on its side.

Curious OP, did you have the loader raised up.?

Your engine was running on its own oil and ran until it ran out of oil. See Diesel engine runaway for a full explication.

Aaron Z

 

[funwithahoe]

My Dad had a Volkswagen Rabbit Pickup that would do that. It would be going along fine and suddenly go full tilt with the key off no diesel to the engine. In doing so it would completely inundate the air filter compartment with oil. VW had a work around where they stopped the vacuum that was creating the problem via hoses.

I'm wondering if the OP could have stepped on the HST pedel and tried to stall it? I realize the tractor was on its side.

Curious OP, did you have the loader raised up.?

I'll save the OP on this one - HST won't because stall there is a pressure relief valve that saves the hydrostat from destroying itself.

BTW, I think this thread is so popular because the title sounds like the punch line to a raunchy joke.

 

[_RaT_]

I've stalled my old L3830 plenty of times with the HST pedal. It simply loads the motor until the motor cannot continue to rotate. I guess thats why they made the "stall guard" on the L3940 which I now have. I do not use stall guard because I have become so tuned in with HST thats its just not an issue. I will have to go out and try stalling it, I know it will do it. I also know the HST will not destroy itself. Its far more rugged than that.

I'll save the OP on this one - HST won't because stall there is a pressure relief valve that saves the hydrostat from destroying itself.

BTW, I think this thread is so popular because the title sounds like the punch line to a raunchy joke.

 

[638]

Think about it. With one wheel in the air, you are not going to stall an engine, reguardless of what kind of transmission you have.

 

[SteveCornell]

Tried that... HST will not operate when it's on it's side (no oil to the pump pickup tube)

The loader was on the ground.

 

[Rob-D]

I'm thinking that tractors flip, not a lot, but enough to have seen this problem before. Is the set up Kubota has creating an environment for this to happen? Will another diesel tractor do the same thing in this situation?

This is the first time I've seen this on TBN. Has anyone else gone through it?

Rob

 

[funwithahoe]

I'm thinking that tractors flip, not a lot, but enough to have seen this problem before. Is the set up Kubota has creating an environment for this to happen? Will another diesel tractor do the same thing in this situation?

This is the first time I've seen this on TBN. Has anyone else gone through it?

Rob

Some people are so passionate on this thread I am afraid we might see an epidemic of people tipping over their tractors just to show the OP how THEY would have got it to turn off.:laughing: