Totally dead tractor - mid-PTO symbol on - no mid-PTO

[FTG-05]

Went out on my Kubota L4330 this afternoon, got halfway up to my pole barn and it started to die out and then stopped. The Mid-PTO symbol came on on the dash lights, never had seen that before. As far as I know, I have no mid-PTO.

Tractor in neutral, key turned on to 'start", zero response, won't start, won't crank, won't do nothing.

I've never had this happen before, have no clue what the heck is going on.

HELP!

 

[k0ua]

Crawl under the tractor and see if you have a mid PTO. If you do, find out what lever or switch engages it then put lever or switch in the other state. If you don't have one... (pray that you do). Then it sounds like a computer logic error.. Disconnect battery, reconnect, and try again. Keep in mind I don't know anything about L4330's. But of course tractor would not start if any PTO is engaged, so that would be normal not to start.

 

[k0ua]

Of course the fact that it was running and then died, does not bode well for the first scenario of accidental PTO engagement.. I am thinking this is a "glitch"

 

[FTG-05]

Crawl under the tractor and see if you have a mid PTO. If you do, find out what lever or switch engages it then put lever or switch in the other state. If you don't have one... (pray that you do). Then it sounds like a computer logic error.. Disconnect battery, reconnect, and try again. Keep in mind I don't know anything about L4330's. But of course tractor would not start if any PTO is engaged, so that would be normal not to start.

This is what I'm gonna try next.

I don't *think* I have a mid-PTO. Wouldn't it be obvious under the tractor????

Cornfused is my current state of mind..............

 

[FTG-05]

Disconnecting the battery didn't do squat.

First time I've had to leave my tractor out in the field........

 

[k0ua]

This is what I'm gonna try next.

I don't *think* I have a mid-PTO. Wouldn't it be obvious under the tractor????

Cornfused is my current state of mind..............

Well the Mid PTO is not quite as big as the rear one, and usually have a cap over them to protect the splines. They are not all that obvious.

 

[FTG-05]

Any other ideas? We were supposed to go pick up a chicken house this morning. That's on hold until I can get the tractor started.


It looks to me I need to get the mid-PTO to turn "off" even though it doesn't appear that I have one. There is no switch or control anywhere on the tractor to turn one on (unlike the PTO control that is located to the right and the rear of the seat area. There is no control where the owner's manual shows one for the mid-PTO lever.

Thanks,

 

[k0ua]

Any other ideas? We were supposed to go pick up a chicken house this morning. That's on hold until I can get the tractor started.


It looks to me I need to get the mid-PTO to turn "off" even though it doesn't appear that I have one. There is no switch or control anywhere on the tractor to turn one on (unlike the PTO control that is located to the right and the rear of the seat area. There is no control where the owner's manual shows one for the mid-PTO lever.

Thanks,

This is bad. OK, I am convinced you don't have a Mid PTO, but your computer is convinced it has one and it is turned on, so the tractor won't start. So battery disconnection did not cause the computer to reboot. OK, we have to figure out out to reboot the computer. Try the link below.. the problem is a different problem, but it is a service interval reset, and who knows it might reset this problem.

Viewing a thread - Kubota L series service reset

 

[FTG-05]

Ok thanks, that will be the next thing I try.

Thanks,

 

[beckmurph]

I vote for a loose wire. Can you find and access your fuse panel? There might be a fuse associated with a mid pto.
I am probably wrong, but I doubt that L had an option for a mid pto.

 

[Sodo]

First of all a mid PTO would be hard to miss. It's smaller spline, under the foot area, facing forward.

And on a Kubota I suppose there would be a control lever for it perhaps on the fender. But do any of the L4xxx-series have mid PTO? I'm surprised the dash has an indicator for it.

What I would do is locate the connectors for the main brain box, then open them and look at those terminals, look for corrosion. Look under the dash display (where the PTO light is) and follow its harness to the main brain. Open all those connectors and inspect. Consider packing dielectric grease into the holes before putting the connector back together, then they will probably never corrode.

I had to remove my instrument panel for another task and doing so I found a mouse had nested there for awhile but (luckily) it did not appear to cause any problems. Worthwhile to have a look in there just in case.

Good luck.

 

[FTG-05]

I vote for a loose wire. Can you find and access your fuse panel? There might be a fuse associated with a mid pto.
I am probably wrong, but I doubt that L had an option for a mid pto.

SUCCESS!

Removed and cleaned all the fuses and found the "Key Stop" (#9 fuse for the ROPS L4330) blown. Replaced it with a like 5 amp fuse from the spares slot and the Mid-PTO light is off and the tractor starts like it always has!

Thanks for the help, I appreciate it!

[insert beer icon here]

 

[Sodo]

Awesome.

5A is a 'tiny' fuse, it's pretty easy to blow one of those. It certainly could blow again. Maybe another member can tell you whats in the Key-Stop circuit and you can follow it to look for wiring problems that might have blown the fuse.

I find it odd that the MID-PTO light turns on when you blow a key-stop fuse and wouldn't rest on laurels at this point. But you can certainly do that sometimes you gotta just take what you can get.

 

[FTG-05]

Got the tractor loaded up now getting ready to go get my MIL's chicken house.

When I get back, I plan to look at the panel connectors and see if there is something going on - like the remains of a mouse nest or corrosion on the connectors or whatever.

How hard is it to take off the instrument panel?

Thanks,

 

[k0ua]

FYI, those Grand L's can and do come equipped with Mid PTO. It is an option of course.. Just like on my Kioti. I don't have it, there is just a plate over the hole where it installs. In my opinion my tractor is too dang big for a MM Mower, but there are other things like snow blowers and brooms etc. that can run of of a Mid Mount PTO.

 

[David_Kb7uns]

Several people have had this same type of incident on other Grand L's including me on my Grand L3130. Check the fuses in the main box and the fuses next to the battery. Check the harness going up to the right fender area from under the floor board for any cut or shorted wires. I never did find what caused my keystop fuse to pop but it has not done it since.

David Kb7uns

 

[beckmurph]

Awh shucks. It was just a wild azz guess

"Thanks for the help, I appreciate it!":drink:

 

[aczlan]

SUCCESS!
Removed and cleaned all the fuses and found the "Key Stop" (#9 fuse for the ROPS L4330) blown. Replaced it with a like 5 amp fuse from the spares slot and the Mid-PTO light is off and the tractor starts like it always has!

I would guess that the "Key Stop" circuit is for the interlock switches (seat switch, PTO, possibly clutch, etc) that could shut the tractor off or prevent it from starting.

Make sure you replace the spare fuse

Aaron Z

 

[FTG-05]

Awh shucks. It was just a wild azz guess

"Thanks for the help, I appreciate it!":drink:

So that's how you do the beer icon! Thanks again!

:drink:

 

[FTG-05]

I would guess that the "Key Stop" circuit is for the interlock switches (seat switch, PTO, possibly clutch, etc) that could shut the tractor off or prevent it from starting.

Make sure you replace the spare fuse

Aaron Z

The next time I go into town, thanks for the reminder!