4400 running backwards

[Rebel]

Running backwards, it happens. Seen a Detroit diesel do it once.

 

[john_bud]

John: That's interesting. Is the manual your looking in for the Grand L or the L4400 economy?

I know my L3400HST came with an ORC but they have eliminated that on the newer models because of some failures. I have the Kubota service bulletin that shows the new L3400 PTO clutch and the ORC feature is gone.

Grand L manual. I "assumed" the economy models would be the same.



I guess that "brain thing" I felt was something other than a thought!

Yeah, the torque direction does not change.

Back to the first point - slip clutch.

jb

 

[RobJ]

I recall seeing a couple run backwards, but I also recall they were not running that well. Maybe to long ago to remember.

 

[simonmeridew]

My L4400 is 2 years old--65 hours-- PTO is hydraulic actuated.
Yes, I'm just idling the tractor or just above idle. Normally plenty of power and torque for my Farmi to winch in most every log. Yes the winch has a slip clutch and I do immediately release the rope to slip the clutch on the winch if the motor seems to be bogging or lugging. But sometimes you think, maybe just a little more pulling with the winch will do it.

My 8N does not have an overrunning clutch, but years of PTO mowing have taught me to plan ahead when I want to stop, as the angular momentum of the mower blades keeps the tractor moving forward even with the clutch pushed in. I've had to suddenly steer around the occasional shrub in the yard more than once,

I've never had a mower on my Kubota, so I don't have first hand experience as to whether momentum of the blades will keep the engine rotating. I would think though if that were the case that pushing the tractor clutch in would disengage and separate momentum of the PTO device from the engine.

dfkrug may have the right idea. With one cylinder ready to fire if there's fuel to burn, it may just want to run if that piston is near TDC, either right before or right after TDC. If before TDC it may run backwards, if just after TDC it will continue forwards. Under normal conditions the tractor always starts easily, Almost no cranking at all, warm or cold. 0 degrees F is no problem
simonmeridew

 

[Mikeeemo]

Don't worry about a brush mower pushing you. The L4400 has a fully independent PTO. I use my L4400 for brush and finish mowing, so I know that it will not push. Thankfully, I have not had run backwards. Thanks for making me aware.