I hate it when this happens !!!!!!!!!!!!

Anonymous Poster · Feb 13, 2003

Differental lock repair on JD 4400.
Price : $550.40...parts /forums/images/graemlins/mad.gif
$1121.00.Labor /forums/images/graemlins/shocked.gif
$156.00 Misc.Charges /forums/images/graemlins/shocked.gif
$118.39 Taxes /forums/images/graemlins/mad.gif
$1945.79 Total /forums/images/graemlins/frown.gif /forums/images/graemlins/mad.gif

DDT · Feb 13, 2003

OH MAN that would make me CRY!!!
I will rember this every time I use mine.
Sorry for the bad luck

Anonymous Poster · Feb 13, 2003

Ouch!! Painful!! How many hours on the machine? Were there particular circumstances that caused the damage?

thcri · Feb 14, 2003

OH wow Steel,

I just had trouble with my differential. I locked it in when I shouldn't have, made a long clank and then had a heck of a time getting it back out. These things are expensive to run.

Murph

JDGREEN4ME · Feb 14, 2003

I just reminded myself why I do not use the differential lock /forums/images/graemlins/blush.gif /forums/images/graemlins/shocked.gif

rdbrumfield · Feb 14, 2003

Differential locks are very nice when you need the extra traction. Just be sure when you engage that the the tires aren't spinning. Put the clutch in to cease movement before engaging. When disengaging, lightly tap each brake right and left to relieve the tension and it will come right out.
Several years ago I went brain dead after using the lock and tried to turn. Couldn't figure why the front was slidding and applied the left brake, Hard, there was a pop and there I sat. Realizing what had happened I then relocked the diff and drove it to the barn and replaced the primary final drive shaft in the left side. Fortunately I do my own repairs so the cost was minimal, around 350.
Bottom line, listen for the disengagement, I can hear mine as it comes out, and if you can't just touch either brake and you can tell if it is out. I learned the hard way.

Anonymous Poster · Feb 14, 2003

I thought the diff auto disengage themselves?

For grins, when I first got my I engage it while stop,
went forward, both tires spin, got traction and went about 5 feet. I didn't need it anymore so i took my foot of the pedal.
I watch it as i moved foward, the lever slowly came up.

I used 4wd from then on, didn't see the point of using it.

Is that the normal way to disengage it?
John

rdbrumfield · Feb 14, 2003

Yes it is spring loaded and it will disengage by it'self. But!, if you are turning, or the interlock is still bound up by the rearend trying to spin, it will not come out until relieved. You have to take the presure off the locking dogs so they will slip out. Turning left then right or just tapping the brakes one side then the other will ensure this.

tractorhal · Feb 14, 2003

4000 series have a problem with the rear ends. Realize you folks are mentioning the dif. lock,but if you have other problems with noise, or breakage it may fall under the fix as fails program. Just had differential and other work done. See post

Anonymous Poster · Feb 14, 2003

The tractor has 596 hours on it.I was in a major landscaping project last year and I was really pulling some dirt(about 40 hours)cutting down a road bank...I may have overused the differental,I do not plan to tackle anymore jobs that big,I am going to try to avoind the differental unless I am in a bind.