When the PTO shaft sticks during a tractor split

ScottNC

Member
Didn't get any bites here on the forum of what to do when the PTO shaft sticks in the pilot bearing while splitting a tractor. My DB885 PTO shaft had pulled out along with the tractor front half for about five inches, firmly stuck in the back of the crankshaft the by the time I gave up.

So, FWIW to anybody interested, here is what I did: Bored a hole in a 3" long piece of 3" round aluminum to an I.D. of 1.117". Mid-way down the parts length I spot faced and drilled and tapped two holes, one on either side of the bored hole to 3/8"-16. Then cut it in half lengthwise with a key-way cutter and through drilled the half with the spot face one size over 3/8". This gave me a split collar with a mild interference fit to the PTO shaft. When clamped on the PTO shaft it provided a place to pry the PTO shaft back out of the pilot bearing.

In my case rust, likely accumulated from condensation was the culprit along with a very long spell where the PTO clutch wouldn't disengage.
 
I have had them do that and you usually can rock the tractor side to side and get the shaft to wiggle out of the pilot bearing.
 
(quoted from post at 16:52:43 04/01/18) I have had them do that and you usually can rock the tractor side to side and get the shaft to wiggle out of the pilot bearing.

Do you know if when the shaft is pushed back in place whether you should be able to turn it back and forth a few degrees short of a full turn? I'm assuming it must be the hydraulic pump it is stopping against but don't know the tractor well enough to know if this is normal.
 
I am not at all familiar with a DB tractor. I would put a wrench or vice grips on the shaft and turn it to see if it will turn like it should. On some tractors things can fall out of place if the PTO shaft is pulled out.
 
Bumping this up to add a FWIW. A tid-bit discovered while reading copies of old David Brown shop manuals...

At least for my 885, it is recommended that the tranny be drained, the cover or housing whatever it is for the PTO be removed. Then the PTO shaft be drawn to the rear to reduce miss-alignment induced binding issues [i:faa3d77fab]before[/i:faa3d77fab] attempting to split the tractor.

I think I will do this very thing before sliding the halves back together. One splined shaft is enough to fight. The clutch pedal can be depressed to assist the PTO shaft engaging the clutch disk and pilot bearing if it becomes stubborn.
 

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