Hyster winch question

Yes, it will bolt right up but that's not the problem. The D4E winch is primarily designed for use on direct drive and torque converter tractors equipped with an interruptible power take off. Power shift tractors are equipped with an optional final drive disconnect clutch. This allows the PTO shaft to stop when the powershift lever is in neutral so that the clutch can be disengaged, the lever set to the desired winch function then engaged to operate the winch.

To operate the winch with tracks stationary, the final drive disconnect clutch must be disengaged. This is done with the powershift lever in neutral. The winch is then shifted into forward or reverse and when the powershift lever is moved into gear the winch will operate.

If the tractor and winch are required to move at the same time, the final drive disconnect clutch is left engaged and both winch and tractor will move as selected by the powershift lever.

I have heard of people getting around the disconnect clutch feature by stopping, shutting off the engine, stalling the torque converter etc. and completely ignoring the safety issues and the consequences.

Final drive clutch is Hyster's words but not a good description. What it really amounts to is a disconnect at the drive pinion for the bevel gear. It's a pretty major job to change out the transfer gear section plus add linkage for operation.
Here is a sample of one of the parts diagrams.
About the only way you could tell visually if it had the disconnect PTO option would be to look for the extra operating control lever or maybe signs that at one time there was a winch installed.

Thanks Magnet. That answers my questions!

On the powershift D4/951/941, the PTO will not turn unless the machine is moving since it is directly geared to the bevel pinion, the Cat optional PTO clutch is a dog clutch which disconnects the bevel pinion to allow the PTO to drive through the powershift while the machine is stationary. Without a PTO clutch, the winch can only be used with the tracks being driven.
The same winch could be also fitted to a 955H, but since it had a two speed transfer gear which could be put in neutral, it could drive the winch through the power shift with no problem.