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MF40 Industrial Tractor differential lock not working

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Lloyd

10-26-2000 21:23:33

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Pushing the differential lock handle forward does not seem to engage. It seems like it hits a stop and does not want to go into a lockup gear. Does anyone have a idea what could be wrong? Thanks

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Jack in NB

10-28-2000 06:46:18

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Re: MF40 Industrial Tractor differential lock not working in reply to Lloyd, 10-26-2000 21:23:33

Hello Lloyd -

It was rust on ours.

Ours has a casting rotated by a ball on the bottom of the operating lever. This casting has a tang on the end in the axle which moves the internal rod. If this casting is not moving (ours was rusted), this could be your problem.

You might get it by squirting some WD40 on it but we had to pull ours apart.

If your casting is moving, then the problem is further in - loose/broken actuating fingers, or a stripped coupling. We stripped one once by engaging the lock while the wheels were spinning.

Another setup on the 40 has a cam on the end of the control rod. This operates directly on the internal rod, and can be accessed by removing a casting with 4 capscrews, to tell whether the 3/4" +/- rod can be pushed toward the center - this operates the lock coupling.

Hope yours is as simple as rust.

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Wendell

07-21-2001 12:10:59

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Re: Re: MF40 Industrial Tractor differential lock not working in reply to Jack in NB, 10-28-2000 06:46:18

Jack,
I have read several of your responses. You seem to be a wealth of knowledge. I had also wondered about the 3-point not raising until the wheels begin to move. Thanks for the info. Would you happen to know where I might find a sevice/owners manual?

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Lloyd

10-29-2000 10:54:56

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Re: Re: MF40 Industrial Tractor differential lock not working in reply to Jack in NB, 10-28-2000 06:46:18

Thanks for the information.
The rod that goes into the housing is only moving about 1/8", until the "bell shaped piece" contacts the housing. I do not know if this is normal or not.

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