GC2300 Rear Differential Locked

[Williford]

I have a 2009 GC2300 I bought new. The rear differential seems to stay locked in now wether I push the pedal bar or not. The bar will lock back out but the differential stays locked in positive traction. I can be driving it and the pedal bar will be springy as if engaging the rear lock but then take my foot off back up pull forward and the pedal with lock back out and the rear will still be locked in. No noises or vibrations. Only if I turn too sharp I will here a click on the inside tire. The front 4wd engages and disengages fine. Tractor still runs and drives fine. Any ideas on getting the rear differential to unlock? Thanks

 

[sailfast]

Get the rear end off the ground in a safe manner some how.

Put it in neutral and individually play with each wheel.

 

[Williford]

I did get the rear end off the ground and roatated the tires by hand. One turned clockwise and the other counter clock wise. I played with each a few minutes then cranked the tractor put it in gear and both spun the same direction. Let it down and drove it and still locked. I tried to remove the other posting and I didn't make any other sharp turns. Thats what helped me determine for sure the rear is locked in.

 

[Kernopelli]

If you look at the diff lock diagram at http://www.agcopartsbooks.com/PartsBooksN/Viewer/book.aspx?book=agco/651794 you can see how your lock is designed and get some ideas on possible problems/ solutions. I would guess you either have a bent or unattached fork or linkage issue between the diff lock shaft and pedal?

 

[milkman]

I did get the rear end off the ground and roatated the tires by hand. One turned clockwise and the other counter clock wise. I played with each a few minutes then cranked the tractor put it in gear and both spun the same direction. Let it down and drove it and still locked. I tried to remove the other posting and I didn't make any other sharp turns. Thats what helped me determine for sure the rear is locked in.

If it was locked, wouldn't the tires both turn the same direction while it's off the ground?

 

[Williford]

I would've thought the tires would turn the same direction as well if unlocked but on the ground it's tearing up the grass on the inside tire as I turn and doesn't turn as sharp as it did because with the tires locked it's trying to push the whole tractor in the forward directions verses turning. The shops keep telling me to bring it in they will have to completely tear it down at the tune of $1300.00 just in labor not counting parts. It just seems like it's probably something simple to me.

 

[Williford]

Darryl, The link you posted says page cant be opened when I try it. I copied and pasted as well with no luck.

 

[Williford]

I've checked the linkage between the pedal and the shaft on the side of the axle housing as well as sprayed with PB Blaster. The shaft is turning when the pedal is depressed so the roll pin isn't sheared.

 

[Kernopelli]

Try this http://www.agcopartsbooks.com/PartsBooksN/Viewer/ and enter model and make or google agco parts and enter the partsbook page as guest

 

[radioman]

IF your diff is locked the whole time, both tires will turn only in one direction. If it unlocked - spinning one will either spin other tire the other way or not at all. I dont think you have a problem and trying to chase a ghost . (no offense)