F-20 Heisler

Anyone have any tips on adding this unit to tractor? The unit was brought to me in pieces. Does the engine have to be moved ahead permanently or just for installation? There is one piece of the puzzle that baffles me. It is cup shaped with a 1/2 inch hole plus 2 smaller holes and 4 indentations around the outside. It may bolt to the input shaft.
 
Glen,
Harry Heisler, from Cedar Falls/Hudson area invented that overdrive. Probably hard to find, but wondering if anyone in that area knows someone who worked at Harry's factory back then.
I went by Harry's nice old house last summer and thought of him.
LA in WI
 
Not sure about the cup shaped piece, but the engine only has to be moved forward to install, then bolts back in the orig place.
 
I worked in Heisler's old factory building in the early 70s and often poked around in the attic of odds and ends, mostly the stuff associated with the Uni-Loader recently sold to Case, but never found anything related to Heisler Manufacturing. My friend, the late Jim Juhl who worked on the Uni-Loader design related how he supervised the auction of Heisler's old molds and left-behind stuff, but there were no records laying about as to where the stuff went.
IaLeo
 
(quoted from post at 08:21:29 05/11/15) Anyone have any tips on adding this unit to tractor? The unit was brought to me in pieces. Does the engine have to be moved ahead permanently or just for installation? There is one piece of the puzzle that baffles me. It is cup shaped with a 1/2 inch hole plus 2 smaller holes and 4 indentations around the outside. It may bolt to the input shaft.

I have a copy of the installation manual, will have to dig it out but on either the Farmall "regular" or the F20 or maybe both you have to cut off 1/4" off the clutch shaft unless you got the right length one from Heisler. The manual also gives alignment tips, done by shims under the engine mounts. Misaligned shafts cause extreme wear in the coupler.
 

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