LX2620 diff lock

/ LX2620 diff lock #1  

FlyFishn

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327
Tractor
Kubota LX2620HSD, IH 444 gas
Is there a way to engage and keep the diff lock locked without holding the lever down with my heel? Im burning up my knee when I run it long. Just curious.
 
/ LX2620 diff lock #3  
Unlikely. Forgetting or failing to disengage it on hard surfaces would result in significant machine damage.

Just curious as to why you need it engaged for extended duration. I never need to use dif lock on my 4wd machine and very very seldom use it on my 2 wd machines.
 
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/ LX2620 diff lock
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#4  
Tillage and grading. With the 4 wheels clawing through the traction is uneven at times. The diff lock balances this out.

It also helps significantly with an angled blade grading where the machine is getting shoved sideways.

20260412_155721.jpg
 
/ LX2620 diff lock #5  
Tillage and grading. With the 4 wheels clawing through the traction is uneven at times. The diff lock balances this out.

It also helps significantly with an angled blade grading where the machine is getting shoved sideways.

View attachment 5497651
I get your point about when you use the rear wheel lock and why. Another way to look at the function is that it guarantees 3 of the 4 wheels are pulling while a normal 4WD without the rear wheels locked (differential defeated) only guarantees 2 of the 4 wheels are pulling. I do wonder though -- unless you are experiencing wheel spin while operating (are you?) then I don't see how the wheel lock does anything for you.
 
/ LX2620 diff lock #6  
Not without fabricatiing some sort of locking device.

I certainly would not recommend doing that.
 
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/ LX2620 diff lock #7  
I know for JD someone makes an extension for the diff lock and their small tractors. I’m not sure if yours is the same where the diff lock lever is very short and awkward to keep your foot on it a extension would help.
 
/ LX2620 diff lock
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#8  
I do wonder though -- unless you are experiencing wheel spin while operating (are you?) then I don't see how the wheel lock does anything for you.

That is exactly the issue. With tillage and grading the wheel slip is enormous. In the picture I was crabbing to stay on the path I wanted. Without the diff lock it was worse.

With tillage, though, like you say - in some areas only 2 of the 4 wheels are getting the most power - the 2 (front/rear) with least traction.
 
/ LX2620 diff lock #9  
My theory in using the locker in the rear for my b7800 is to engage when stopped and hold as long as needed and release when needed BUT never to engage while in motion.
 
/ LX2620 diff lock #10  
That is exactly the issue. With tillage and grading the wheel slip is enormous. In the picture I was crabbing to stay on the path I wanted. Without the diff lock it was worse.
I would say you are asking the tractor to do more than it is designed for and using the diff lock probably isn't the best solution based on similar experience with my L4400.

The only time I use the diff lock is when one rear wheel gets light on an uneven surface and spins and forward motion stops. It is, indeed, a pain to use, but I think it is that way on purpose.

Also, as mentioned by someone else above, mine will stay engaged as long as there is load on it. As soon as I let off the throttle it disengages.
 
 
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