Differential won't stay locked

50shootr

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B6100D, Honda 70 fourtrax STIHL MS 250
Nov 4, 2012
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So. Dartmouth,Ma.
Hi.. Have a B6100D 950hrs.. I press the lock pedal when the wheels slip on snow both wheels engage but don't stay locked, the opposite wheel will now engage,if I reach down & push the pedal down with my hand same results.,any suggestions ? just an adjustment right ?
 

North Idaho Wolfman

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You understand that they only lock when pushing the pedal, let off the pedal and they unlock (spring loaded).
No there isn't really any adjustment to that set up, up is off down is on.
 

cerlawson

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Not sure of your tractor set-up, but usually If you need the lock, you have to keep your foot on it. Normal practice is engage it when no power is going to axle, and once the wheels start turning you usually can take foot off, but not always. They usually disengage once you aren't playing power. Never engage it while any wheel is spinning or you will never have it again (until repaired).
 

85Hokie

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Bedford - VA
Hi.. Have a B6100D 950hrs.. I press the lock pedal when the wheels slip on snow both wheels engage but don't stay locked, the opposite wheel will now engage,if I reach down & push the pedal down with my hand same results.,any suggestions ? just an adjustment right ?

So - when you push down on the lever - it stays down BUT the two tires still are not locked? Is there any "feeling" of engagement when you press it down?

On my BX - the lever has a spot that once you push it down, it goes the rest of the way as the wheels are spun a bit.

I would check the linkage first.
 

koja

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BX25D
May 27, 2014
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Fremont Mi.
On my bx when you press down on the pedal it takes a few for it to engage . You can feel the pedal go lower when it engages . When you let off the pedal it disengages .
 

50shootr

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B6100D, Honda 70 fourtrax STIHL MS 250
Nov 4, 2012
28
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0
So. Dartmouth,Ma.
Thank You Gentleman for your replies... Thought I was doing something wrong,I pressed the pedal once the the wheels barely turned, added power and if I kept my foot on it was ok,love this tractor, live 1/4 mi from the main road and wasn't able to finish plowing because of something as simple as that!! Had a Ambulance out here didn't get stuck, but the oil truck got stuck yesterday and a big tow truck came out and winched it out all because I didn't know how to operate the differential lock !!
 

85Hokie

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BX-25D ,PTB. Under Armor, '90&'92-B7100HST's, '06 BX1850 FEL
Jul 13, 2013
10,390
2,192
113
Bedford - VA
Thank You Gentleman for your replies... Thought I was doing something wrong,I pressed the pedal once the the wheels barely turned, added power and if I kept my foot on it was ok,love this tractor, live 1/4 mi from the main road and wasn't able to finish plowing because of something as simple as that!! Had a Ambulance out here didn't get stuck, but the oil truck got stuck yesterday and a big tow truck came out and winched it out all because I didn't know how to operate the differential lock !!
Just like everything else on one of these Orange beauties - there is always something that we can all learn ! If not for this forum - a lot of people would have many simple things NOT explained! I learn something about a Kubota tractor here almost everyday! :)
 

Lewis

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b6000
Mar 2, 2009
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Massachusetts
This is something that I have wondered about. Is it supposed to stay down? Mine disengages when I take my foot off the pedal and I guess that's the way it's supposed to work.
 

ShaunBlake

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Dec 21, 2014
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Sugar Hill -- next door to Buford, GA
This is something that I have wondered about. Is it supposed to stay down? Mine disengages when I take my foot off the pedal and I guess that's the way it's supposed to work.
On the B-series anyway, there's a spring under the pedal. Lift your heel, the pedal pops back up, disengaging the lock.

Sort of inconvenient when using the foot throttle, but as you note, that's the way it's supposed to work.
 

North Idaho Wolfman

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Sandpoint, ID
This is something that I have wondered about. Is it supposed to stay down? Mine disengages when I take my foot off the pedal and I guess that's the way it's supposed to work.
Yes it's only supposed to engage while holding the pedal down. ;)
 

ShaunRH

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The clutch is your friend when needing diff lock. Foot throttle is nice but it's better to run the RPM's up to what you need and work the clutch. Trying to time one foot is harder than using both.
 

ShaunBlake

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B6100D; B219; Piranha bar; Hodge stabilizers; Filled Ag rears; R322T w/48" deck
Dec 21, 2014
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Sugar Hill -- next door to Buford, GA
The clutch is your friend when needing diff lock. Foot throttle is nice but it's better to run the RPM's up to what you need and work the clutch. Trying to time one foot is harder than using both.
I'm "ass"uming this is offered for me. While I agree fully with your points, I have a very strong aversion to engaging a clutch when the RPMs are as high as I usually need when confronted with the need to lock the differential.

The best solution for my dilemma is to learn to work the hand throttle, the brakes, the dif. lock, and the FEL levers like Beethoven playing a sonata rather than like me playing chopsticks.:eek:
 

50shootr

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Equipment
B6100D, Honda 70 fourtrax STIHL MS 250
Nov 4, 2012
28
0
0
So. Dartmouth,Ma.
Hi..Thanks for all the input,I worked as a marine mech & replaced many of those clutch dogs in outboard & stern drive gear cases which are in the Kubota differential lock so now I know how it works, this forum is great!, used to call Honda,Yamaha,Merc. Omc. etc. tech. when I was stuck on a customer job again being a mechanic this B6100D is a well made, reliable,robust Machine .