Diff lock not working

dnw64 · Monday at 1:59 PM

...apparently. I.e. only one wheel spins when "engaged".

Where do I look, or can I, to find out what the issue might be?

B3030

SPYDERLK · Monday at 2:32 PM

dnw64 said:
...apparently. I.e. only one wheel spins when "engaged".

Where do I look, or can I, to find out what the issue might be?

B3030

Linkage from the actuator pedal. Maybe bent or disconnected?

dnw64 · Monday at 2:50 PM

SPYDERLK said:
Linkage from the actuator pedal. Maybe bent or disconnected?

Ha, could be the obvious! Thanks for the kick in the behind. Will check it out...

JWR · Monday at 3:10 PM

You sure it was engaged when only one wheel was turning? Many tractors have little to no indication as to whether the rear differential lock has engaged or not. On most of mine, with my heel pressure downward on the pedal hard, the wheels have to turn a small amount and the engagement pedal then goes down further when it actually engages.

dnw64 · Monday at 3:50 PM

JWR said:
You sure it was engaged when only one wheel was turning? Many tractors have little to no indication as to whether the rear differential lock has engaged or not. On most of mine, with my heel pressure downward on the pedal hard, the wheels have to turn a small amount and the engagement pedal then goes down further when it actually engages.

I understand it may not be immediate, but yes, I have let the wheel spin more than half a turn, the pedal is touching the floor, and nothing changes. I will look at the linkage. Don't know why I didn't think of that before, d'oh!

Bentrim · 2025-07-17T11:49:53-0400

Have you engaged the diff lock with one wheel spinning and the other standing still? If so you may have destroyed the diff lock.
Diff lock on small tractors is a mechanical positive engagement device. There are either pins the slide into holes or dogs that lock into the differential cage to lock the differential.

Hopefully you will be lucky and find an external cause for it not to work.