JD 3X20 Differential lock pedal

   / JD 3X20 Differential lock pedal #1  

Dan Hunter

Platinum Member
Joined
Nov 1, 2011
Messages
520
Location
Enid, OK
Tractor
2012 John Deere 3720 eHydro
I'm I the only person that finds the length and position of the diff lock pedal inconvenient. Yeah, I have the seat forward and that complicates access but when I'm trying to use it I always think of this:

astronaut.jpg
 
   / JD 3X20 Differential lock pedal #2  
Hmm, don't think I've ever used mine other than when I first got it to see if it worked, usually have mine in 4x4. Seemed like it was a bit awkward to get it to engage.
 
   / JD 3X20 Differential lock pedal
  • Thread Starter
#3  
Exactly. I use it EVERY time I back onto the trailer and any loose slopes.
 
   / JD 3X20 Differential lock pedal #4  
I find it awkward too.

I use my 3320 to mow my lawn and use the diff lock all the time in one particular place where I have to turn 90 degrees, go up a fairly short hill (30 feet?) and then turn again. I always get one rear wheel spinning when making that first turn, so hitting the diff lock gets it going just right. If I use MFWD there I'll rip up too much lawn in the tight turn(s).
 
   / JD 3X20 Differential lock pedal #5  
Very awkward. Still, better than not having the option at all.
 
   / JD 3X20 Differential lock pedal #6  
not fond of it in my cab either. terrible location and terrible engagement. I have only used it to test it myself and it actually does work thank god. luckily for me, I haven't ran into a situation where I have had to actually use it. my 4 wheel drive works good enough where I don't need "3"wheels turning. actually hurts my knee when trying to hold down until it locks in
 
   / JD 3X20 Differential lock pedal #7  
Interesting, I don't have any problem with mine at all. Less than optimal traction with R4 tires means I use mine regularly. That said, the tractor must either stationary - or traveling in a straight line - when engaging/disengaging diff lock. Otherwise the disparate rotational speeds of the rear wheels will make engagement/disengagement difficult or impossible. Internal damage is not out of the question either. Plus it helps that I'm a six footer, so the seat is always all the way back to the stops.

//greg//
 
   / JD 3X20 Differential lock pedal #8  
Another one that hates it. In the almost 6 years of owning this tractor, I probably have only used it 10-15 times and that was when it was really sloppy out, and it is just a pain in the butt to use. I know it is supposed to remain engaged when there is constant wheel slippage, but when you have a lot of grab/loss/grab/loss conditions, it sucks to have to use your heel to hold it down. Like was said though, I am glad to have it, just wish it was more convenient to use it.
 

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