L3400dt

[novasbc]

L3400dt PTO clutch

I'm new here, and have recently purchased a Kubota L3400. I bought it for a relatively low price due to it having some electrical issues, and inability to engage the PTO while running (despite being able to shift drive gears just fine).

The PTO didn't show much evidence of wear, and the prior owner never used it once, so I figured the clutch was rusted in place.

I recorded a video to show what I'm talking about.
I had some time to start looking into it, and I realized I didn't know enough about how the two stage clutch works. I notice that the clutch pedal appears to go to two places, perhaps to the drive clutch, and to the PTO.

That rear shaft isn't moving at all, neither from the clutch nor the PTO lever. Is this likely my culprit?

Two other questions:

• Do factory service manuals exist for things like electrical diagrams and a deeper look at the work I may end up doing?
• Everything I read says this should be an L3400DT, yet the plate says L3400D, what's up with that?

Thanks!

Mark

 

[lugbolt]

L3400 DT PTO is all mechanical, no hydraulic pto on that tractor. But it has a dual stage clutch. As you're pushing down on the clutch pedal, you first release the travel clutch, then as you get a little further, the PTO clutch releases. Or that's how it should work. I can't ever remember seeing a PTO clutch stuck in the released position-usually they're stuck engaged, to where the PTO won't stop until the PTO lever is moved to the "off" position.

If that's your case, and it won't turn off with the clutch pedal, then the clutch disc is stuck to the pressure plate or flywheel. SOMETIMES working with it, with a load on it will free it, but it's rare. Typically replacement is the best option. BTW that dual stage clutch assembly isn't cheap, and thus you may have some luck in adjusting it. Worth a try. Pick up a WSM and it'll outline how to do it properly. It's a little unorthodox compared to a single stage clutch adjustment.

in the vid, the clutch appears to have two levers. The one that goes to the rear of the tractor is actually a brake actuating rod, it's attached to a rod that runs through the clutch pedal link pivot-it'll have nothing to do with the clutch. In the vid, the linkages appear to be working as designed.

 

[novasbc]

L3400 DT PTO is all mechanical, no hydraulic pto on that tractor. But it has a dual stage clutch. As you're pushing down on the clutch pedal, you first release the travel clutch, then as you get a little further, the PTO clutch releases. Or that's how it should work. I can't ever remember seeing a PTO clutch stuck in the released position-usually they're stuck engaged, to where the PTO won't stop until the PTO lever is moved to the "off" position.

If that's your case, and it won't turn off with the clutch pedal, then the clutch disc is stuck to the pressure plate or flywheel. SOMETIMES working with it, with a load on it will free it, but it's rare. Typically replacement is the best option. BTW that dual stage clutch assembly isn't cheap, and thus you may have some luck in adjusting it. Worth a try. Pick up a WSM and it'll outline how to do it properly. It's a little unorthodox compared to a single stage clutch adjustment.

in the vid, the clutch appears to have two levers. The one that goes to the rear of the tractor is actually a brake actuating rod, it's attached to a rod that runs through the clutch pedal link pivot-it'll have nothing to do with the clutch. In the vid, the linkages appear to be working as designed.

Thank you very much for the response. You have confirmed my initial suspicion.

I think I'll use it the way it is for a while, and see if i can't free up the PTO clutch. I understand that it may never free up, but it gives me a bit of time to use it.