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To hydrolift or not to hydrolift that is the question

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So I have picked up a few more of the early foot dragger Allis Simplicity tractors and looking at another one next week.   I now have two with the hydrolift.   The 3012 leaks/doesn't stay up and the 101 not running has pits on the cylinder piston I am also looking at a B10 w hydrolift.   I really like the hydrolift but am wondering if there is consensus as to whether or not I should bother.   I know the parts fetch good money on Ebay.   I am the type that if I am fixing something that requires a lot of the tractor to come apart I am going to end up restoring the tractor.   Are these problematic and are there common problems with this set up?   Are you guys staying away from them or are they well liked and worth any of the trouble?

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The actual seal for the piston is not the rod, but the o-rings that ride on the inside of the cylinder barrel.

Replacing o-rings is easy.  There is an article detailing the re-build process, probably in the Tech Pages.


Last I knew the Pump rebuild kit was still also available from Parker.  Replace o-rings in the Valve and cylinder before trying the pump.

Use the search feature, lots of content on the B-series Hydro lift.

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I far as I know they are very reliable, with little or no maintenance.  My 1970 HB212 sits inside (not getting rained on), and I have never done any to the lift other than check oil level every 3 years, and have never added any oil.  I have heard the same from many others.

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Several yes ago Htews told me “once you use one you’ll have one on all your tractors.”  I don’t but I use the ones w/hydrolift most. They typically are easy to rebuild if needed and are very reliable. 

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