Harbor Freight Shop Crane Release Valve Knob
thingiverse
This knob is a modification I made to my Harbor Freight 2 ton shop crane (aka engine hoist or cherry picker). This knob made it easy for me to have precise control of the release valve and was much easier to use than the sloppy pump handle. I added some raised areas to help make it easier to grip if your hands get greasy. It is easy to install, you simply press it in to place. This may also work for the 1 ton shop crane but I have not had a chance to test it.
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