Differential Loc TC29D

[jinman]

Murph, I hope your problem is gone, but if you had to "yank" that hard to get the differential lock to release, I gotta believe there is something still lurking about, waiting to become a problem again. With my luck, it would stick again, one day after my warranty was up. /forums/images/graemlins/shocked.gif /forums/images/graemlins/frown.gif It also sounds like your are using the differential lock a lot to give it a chance to either loosen up or fail again. You can't get something fixed that isn't broken, but at least you will recognize the symptoms for sure if you ever have the problem again.

 

[djradz]

I agree Jim. I've never had mine really stick. Yes, sometimes it took hitting the brake or making a sharp turn, but never sticking for as long as this case. I seem to recall from looking under my tractor that there's a fitting or two the lever arm goes through before connecting to the tranny. Maybe it's hanging up on one of these. In any case, I think I'd be using the heck out of that from now until the warranty is up, just to make sure it doesn't reoccur.

 

[thcri]

I looked in the book to see if there was a way to intentially lock it in by pushing the pedal down and then maybe to the side or something. But I could not find that as an option. I wonder if maybe the linkage could be bent or something like that. I have used it a few more times this morning and it seems to be working ok. I will try and follow the linkage and see if I can find anything or I will have the dealer look at it in the spring when I have the oil changed.

Murph

 

[JATO_RaT]

Murph, thats how I frequently have to do it on my International. It needs a little convincing sometimes.

 

[thcri]

I must really have something wrong. I purposely lock the differntial in and now it won't come out. Even if I yank on the lever pulling it up. I notice that I can get it out if I lock up one of the brakes. I never have had to do that before. I called my dealer and he says that I did not hurt anything and it is normal to have to hit the brake to get them out. I'm not sure if I believe. Why did I not have to do this before. I used the differential loc lots of times last summer when mowing on this steep hill I have both going up and down the hill and the loc always came out on its own right away?

Kind of concerned here, Murph

 

[spencer200]

Follow the linkage from your dif lock pedal to where it goes into the housing and spray something like wd40 where the shaft goes into the housing and work it and give it another coating. Water tends to penetrate the shaft where it goes into the housing causing it to work a little stiff. The diff lock is designed to be used while the wheels are spinning you did nothing wrong engaging it like that.

 

[thcri]

Spencer,

I did check the linkage today and could not find any hang ups. I see where there is a plunger that goes into the housing of the tractor. I will put some WD40 on it and see if that will loosen it up.

And yes, I did engage it when I shouldn't have. The wheels are to be turning but should both be turning about the same speed. I put mine in when one wheel was spinning on the ice while the other was stationary or may have already been going backwards. I was going up a steep hill on concrete with a sheet of ice on it and started sliding back down.

Murph

 

[jinman]

Murph, check your operator's manual and see what it says. Mine says the differential lock automatically releases as soon as you stop forward motion or torque is removed from the drivetrain. That's exactly the way it works. I'd suggest doing the lube job Spencer200 suggested and if that doesn't cure the problem, I'd be standing on my dealers showroom, asking him to show me a new tractor that works like he describes. If he can't, then you deserve a warranty repair. As a last resort, you could send him a certified letter describing the problem and demanding repair. If that doesn't get results, I'd be on the phone to New Holland right away. Remember, you were on a glaze-ice surface. How much torque could you have put on the drivetrain under those circumstances? You weren't pushing a load; only pulling the tractor's own weight up a hill. Also, you heard a distinctive loud CLUNK when you engaged the diff-lock. It's not like you were abusing your tractor. You should put all thoughts that you did something wrong out of your head. You simply used a feature of your tractor and now it doesn't work right. Your dealer should be willing to help you fix the problem instead of making excuses. I know these are pretty tough words, but I think your dealer is giving you the run-around on this one.

 

[spencer200]

despite what your manual says you did nothing wrong when you engaged the dif lock in the manor in which you are describing. Tractors have been being used in this manor for years without problems when the dif lock is engaged in this manor. This should free up with some lube if not there is probably an interanl problem..we have farmed for years and always engage the diff lock when slippage occurs with no problems with out stopping the tractor.

 

[thcri]

Spence and Jim,

One thing I got going for myself, when I bought this tractor, I had a one year interest free, no payments until July of 2003. So if they want their money, it will be checked out and working. I will spray some WD40 on it also. My tractor sits in a heated garage, and if Jim is right maybe I could even have some freezing going on. It works in my garage just fine, but when I am outside, that is when it seems like it stays locked in.

Murph