Stalling an HST tractor

[SPYDERLK]

Personally, I don't see the difference between stalling an HST or clutch transmission. Torque is torque in my mind.

On the fuel note, I had just added 5 gallons from a plastic container. But my fuel bowl looked good and I emptied it and didn't notice any debri or water.

Possibility there was gas in that can?
larry

 

[Alan L.]

I've stalled the HST on my B2710 a few times with no ill effects. More often I have killed the engine a mound of hard clay with the brush hog, or trying to dig with the FEL. In 900 hours and nearly 13 years no ill effects.

 

[Chain Bender]

Possibility there was gas in that can?
larry

No Sir. All of my deisel cans have black wire loops around the handles and have big "D"'s painted on the side of them. Plus I keep gas in one barn and deisel in another just to make sure. And even if I had mistaken gas for deisel, I'm sure I would have smelled it when I spilled it at the tank opening.

I thought of the same thing and went back to both barns to check and all cans were where they were supposed to be.

CB

 

[RoyJackson]

Any word from the dealer yet?

My tractors never turn less then 1500 RPM except when engaging or disengaging the PTO...that includes when setting there for a few minutes idling.

 

[Redneck in training]

Tractor diesels are derated way below the ability of the engine to produce power. Specific power of typical tractor engine is about 20HP/liter of displacement. That is why they last forever even when used at rated power output. So there is not a reason to run the engine at low RPM.

 

[Chain Bender]

Just came home from the Kubota dealership. They had the tractor dismantled and engine out. Aked the mechanic what was wrong with it and he said the crank was broken.

But he wasn't sure if the crank broke and ruined the bearing(s) or vice versa. Anyway, shop manager took pictures to send to Kubota. Said it would be Tuesday before they heard anything back. Not sure if that meant they would agree to fix it (it is still under warranty by 14 months) or about the parts.

Anyway, it's gonna be a while before I get my little helper back.

CB

 

[SPYDERLK]

Just came home from the Kubota dealership. They had the tractor dismantled and engine out. Aked the mechanic what was wrong with it and he said the crank was broken.

But he wasn't sure if the crank broke and ruined the bearing(s) or vice versa. Anyway, shop manager took pictures to send to Kubota. Said it would be Tuesday before they heard anything back. Not sure if that meant they would agree to fix it (it is still under warranty by 14 months) or about the parts.

Anyway, it's gonna be a while before I get my little helper back.

CB

Must have been a faulty crank. I figure youll be provided a new engine. Depending where, a broken crank can damage the block.
larry

 

[JerryK]

I don't understand the physics of why stalling a HST would be any different than stalling a gear drive. Or, why stalling a low RPM motor would be any worse than stalling one that was at full RPM.... Or why stalling a motor would break a crank, I have stalled my share of them. I would think that the crank was just defective, and should be covered under warrantee.

 

[hr3]

Can I ask what gear you were in at the time this happened???

 

[RoyJackson]

Must have been a faulty crank. I figure youll be provided a new engine. Depending where, a broken crank can damage the block.
larry

Sure sounds like it...with only 135 hours on the machine.
Boy, that sucks!