The chain on this is a roller drive-type chain. Think bicycle or motorcycle - but _big_. It is only slightly rusty. At one end of the chain I use ATF and some movement and got the chain flexing well. My objective is to get oil into the joints so they will move - probably will require some elbow grease. I have disassembled, cleaned, and lubricated the drive unit and the block. Once the chain is flexing well it should be fully operational. I don't know what I'm going to do with the monster then. It's a Yale PC series roller chain lever hoist. The roller chain is not very flexible side-to-side, but super strong and long lasting. Though it's rated for 6000 lb [2700 kg], it sure looks like it could lift triple that. The pictures are crummy, but kinda mine looks kinda like this listing. http://www.ebay.com/itm/Yale-3-4-ton-Pul-Lift-Lever-Hoist-PL46C-5-ft-chain-/371386811879
You can use it to pull engines under a tree limb or under a truss in your "steel shed" or under an A frame you built.
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