BX2200 Diff Lock

Dataway · Feb 13, 2020

I notice there is a lot of scuffing, grinding of the rear tires on the pavement on my BX2200 when making sharp turns .... what's the best way to check that the diff lock is not stuck engaged?

Chewwy · Feb 13, 2020

Dataway said:
I notice there is a lot of scuffing, grinding of the rear tires on the pavement on my BX2200 when making sharp turns .... what's the best way to check that the diff lock is not stuck engaged?

Appears you have discovered the diff lock IS engaged.

For my L3240, the manual states “If the differential lock cannot be released, step lightly on the brake pedals alternatively.”

Fallon · Feb 13, 2020

Put it in 2wd
Leave the transmission mission in gear
Block the front tires (so it wont roll around, there are no front brakes or front parking brake)
Jack up the rear end so both tires is off the ground
Manually spin a rear tire

If both tires are off the ground & the rear diff is open the opposite rear tire should spin the opposite direction. If both rear tires spin the same direction the diff lock is on.

Dataway · Feb 14, 2020

Thank you gentlemen, I will check it out.

Henro · Feb 16, 2020

Fallon said:
Put it in 2wd
Leave the transmission mission in gear
Block the front tires (so it wont roll around, there are no front brakes or front parking brake)
Jack up the rear end so both tires is off the ground
Manually spin a rear tire

If both tires are off the ground & the rear diff is open the opposite rear tire should spin the opposite direction. If both rear tires spin the same direction the diff lock is on.

In addition to what Fallon advised, I would add that since the BX2200 does not have a neutral position between low and high (at least I do not remember one :ashamed: ), if the differential lock is stuck on, the tires will likely take more effort to turn than they will if the differential lock is not functioning...and the differential spins without needing to turn the input shaft.

Fallon · Feb 16, 2020

Henro said:
In addition to what Fallon advised, I would add that since the BX2200 does not have a neutral position between low and high (at least I do not remember one :ashamed: ), if the differential lock is stuck on, the tires will likely take more effort to turn than they will if the differential lock is not functioning...and the differential spins without needing to turn the input shaft.

If there is no neutral or some way to leave it out of gear & the diff lock is on, you won't be able to spin the tires by hand.

Henro · Feb 17, 2020

Fallon said:
If there is no neutral or some way to leave it out of gear & the diff lock is on, you won't be able to spin the tires by hand.

This may be true. OR since it is a hydrostatic transmission, perhaps it might be possible to turn the back wheels?

Don't have a clue, but the OP should get his answer either way it seems...

Fallon · Feb 17, 2020

Henro said:
This may be true. OR since it is a hydrostatic transmission, perhaps it might be possible to turn the back wheels?

Don't have a clue, but the OP should get his answer either way it seems...

In low range all my HSTs would hold the tractor put on a pretty good slope. In high range it would creep downhill a bit. Either way it's enough resistance your not likely going going to be able to spin tires by hand while in gear.

Dataway · Feb 18, 2020

My 2200 has a neutral between high and low ... was out doing some snow removal today (still haven't brought it in the shop to check) and noticed the pedal goes all the way to the floor, has spring resistance but certainly doesn't feel like it's engaging anything. Hopefully it's just seized up linkage. If it works like my 1715 manual ... then it would go half way down, I'd have to wait for tire slip and then I would feel it go the rest of the way down and engage the diff lock. Should the BX feel the same way? Cause it doesn't

check · Mar 5, 2020

Dataway said:
My 2200 has a neutral between high and low ... was out doing some snow removal today (still haven't brought it in the shop to check) and noticed the pedal goes all the way to the floor, has spring resistance but certainly doesn't feel like it's engaging anything. Hopefully it's just seized up linkage. If it works like my 1715 manual ... then it would go half way down, I'd have to wait for tire slip and then I would feel it go the rest of the way down and engage the diff lock. Should the BX feel the same way? Cause it doesn't

My 2009 BX25 diff. lock works that way, but it sometimes goes all the way down right away instead of going halfway first. Don’t know why, but it always works correctly.

Sounds like yours is stuck in the “locked” position somewhere downstream of your pedal.