Ford 4000 PTO is disengaging

Tom in TN · Oct 3, 2023

I have a mid 1960's Ford 4000, 4 cylinder, diesel tractor. I was bush hogging a hay field today (no stumps, no rocks, just tall grass). 4 or 5 times while I was bush hogging, the PTO just disengaged. I stopped the tractor and put the PTO lever back into the engage position, it worked fine.

Any advice?

Tom in TN

RobCons · Oct 3, 2023

Check the pto shaft coming out of the tractor for free play. If it goes in and out the pto will basically walk itself disengaged.

Ultradog MN · Oct 3, 2023

With the engine off grab the pto shaft and pull it in and out. If you can move it more than about 1/32'' the circlip that holds the pto shaft bearing in place has been popped out of the groove it fits in.
You will need to pull the shaft to repair it.
Usually the problem is caused by the driveline on the mower being too long so that when you raise the 3 pt lift it jams the pto shaft into the tractor and pops the circlip out of place.
Pretty common on all of the older Fords.

Ford 4000 PTO is disengaging

Tom in TN

Well-known Member

RobCons

Well-known Member

Ultradog MN

Well-known Member

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