Do You Lube a Trailer Jack?
In a real basic tool kit you only need two items: WD-40 and Duct Tape. If don't move and it's supposed to, use WD-40; if it moves and it ain't suppused to, use duct tape.
Seriously, I pour a little gear oil (used gear oil mind you) on the top of my worm gears of the jacks that do not have fittings. I let is drip and work it's way down there while I spijn the handle one way and then the other. I figure it's like chicken soup - nobody ever died from it!
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