L3400 clutch problem

   / L3400 clutch problem #1  

Chilly807

Elite Member
Joined
Sep 13, 2009
Messages
3,225
Location
Nova Scotia
Tractor
Kubota L3400DT
My L3400DT had been acting a bit odd lately, as if the clutch was dragging and not fully disengaging.

One time after an extended mowing session it didn't want to come out of high range, and kept edging ahead with the clutch depressed. Shut it down, and everything freed up immediately.

If I was in gear for an extended period (as in moving down the road for example), the shuttle was sticking in gear and was reluctant to move to neutral with the tractor running. In high range it just wouldn't shift, in low gear it was pulling.

Two weekends ago we were setting fence posts, I nearly ran over the wife twice with the clutch pressed hard to the floorboards in low range. Incidentally, if you think the brakes will stall/stop the tractor in 4wd low range 1st gear, you'd better have a lot stronger right leg than I do. The L series has great brakes, but they're no match for that.

So, she's thinking I was trying to kill her, albeit slowly.. and I'm thinking it's time to let the dealer have a look at the tractor before someone DOES get hurt.

After calling the shop, one of the mechanics came out and had a look at it that same day. He tried a few adjustments without solving the problem, and hauled it back to the shop for a closer look.

After calling Kubota's tech service people, they discovered that there had been another one very recently, maybe even the same day, that had done something similar to mine. Turns out both were 2009 model year tractors that had sat for a long time before being sold, the splines on the clutch shaft had rusted enough that they would occasionally jam and not allow the clutch to release.

Apparently the serial numbers were very close, probably same day or week of production.

They split the tractor and cleaned the rust away, lubed the shaft lightly to keep the rust off. Less than a week later I have the tractor back, cleaner than when I gave it to them and at no cost to me.

Having something under warranty when you have a problem like this makes a huge difference, and I can't say enough good things about the folks at Nova International. The service department did a great job in a short time and I'm back to setting posts and moving soil.

Anyone that thinks Kubota doesn't stand behind their machinery should have the experience I did. It would have been easy to simply say that the warranty didn't cover rusted parts and pass me the bill.

I'm a mechanic by trade but I'm not set up to split tractors, and I have other things that have to be done too. So at least in this case buying new just paid off.

Sean
 
   / L3400 clutch problem #2  
Sean, I am sorry you had the problem, but I am glad they stepped up to take care of it. I am not a big "brand centered person' As I have owned other brands of tractors, and as for cars and trucks I have owned them all, but when I hear a story like that, I am kinda glad I bought another Kubota. I sure have enjoyed having our little L3400HST, The wife and I use it a lot, and don't know how we would get along without it.

James K0UA
 
   / L3400 clutch problem #3  
Glad to hear you got it fixed that can be some scary stuff. We have an old Ford that acted like that. My brother fixed it, so I don't know the cause. It sure got "interesting" up here in the hills and woods.
 
   / L3400 clutch problem #4  
Sean
As you know I have same L3400 DT(direct-transmission)(gear).
Glad everything worked out for you(s).
Thanks for sharing experience.

Boone
 
   / L3400 clutch problem #5  
My L3400DT, bought in 07 is doing the same thing, getting locked in gear. Kubota must not put grease on the spline or pressure plate for rust to cause a problem like this, and I doubt Kubota will warrantee to fix my tractor, maybe if it was built by Toyota it would be covered
 
   / L3400 clutch problem #6  
My 07 L3400dt is locking in gear more now than just a few months ago, its almost getting to point of being a pain in the blank. It wont lock in gear on my garage floor, but locks in gear when I go down in the woods with it, doesn't matter if I'm in 2 wheel drive, 4X4, diff lock, reverse, low gear or high. The tractor does feel like the clutch is sticking to the pressure plate, like when I push the clutch petal down, it feels like the tractor wants to keep moving, like I'm riding the clutch when I'm against a tree or digging in dirt. Sometimes I have to lift the tractor with bucket so I can get it out gear. Shouldn't a clutch and pressure plate last longer then 700 hrs.
 
   / L3400 clutch problem #8  
The clutch petal is adjusted to half inch free play, the manual calls for 1 inch max, the other adjustment is behind the loader mount, haven't touch that yet.
 
   / L3400 clutch problem #9  
My 07 L3400dt is locking in gear more now than just a few months ago, its almost getting to point of being a pain in the blank. It wont lock in gear on my garage floor, but locks in gear when I go down in the woods with it, doesn't matter if I'm in 2 wheel drive, 4X4, diff lock, reverse, low gear or high. The tractor does feel like the clutch is sticking to the pressure plate, like when I push the clutch petal down, it feels like the tractor wants to keep moving, like I'm riding the clutch when I'm against a tree or digging in dirt. Sometimes I have to lift the tractor with bucket so I can get it out gear. Shouldn't a clutch and pressure plate last longer then 700 hrs.

Depends on the conditions and moisture it can happen fast in any tractor with that type of transmission. Does your clutch have a hook to keep it engaged during a long period of time without being used?
 
   / L3400 clutch problem #10  
Yes, the L3400dt has a spring loaded pin to hold the clutch petal down, this fall I started using it but doesn't seem to help with shifter locking in gear. My tractor gets used atleast once a week if not more, so that's probably why I see no difference, murphy's law might apply here.
 

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