[This advice from Mike Sloane]

There are a few problems with putting a 3-point hitch kit on a tractor (H or M) equipped with the transmission driven Lift All hydraulic system (the H and the M used identical units with different drive shafts to allow for the different spacing of the engine and transmission):

1. It only works when the clutch is engaged, which is quite inconvenient
   at times.
2. The capacity of the reservoir is very limited, meaning that the most
   you can handle is one 2x8 cylinder.
3. The pumps in those units were only capable of 750 psi when they were
   new, and by now are lucky to get out 500 psi. So you won't be able to
   lift very much in the way of implements (a decent rear blade will just
   sit there on the ground).
4. The control valves are not designed for precise positioning of the
   cylinders - you are pretty much left with all the way up or all the way
   down.
5. The pump volume was miserly, and even if everything else works, hitch
   operation is slow. Also, the system is single acting, relying on gravity
   to push the fluid back through the system when lowering the hitch.
   

© 1999-2002 T.W. Cook - All Rights Reserved. Operating and repairing antique tractors is an inherently dangerous activity. In particular, Farmall H's predate many modern safety enhancements such as roll-over protection systems. Please, be aware of the proper safety procedures and take all possible precautions - be careful out there!

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This page last updated: September 27, 2003