HF Bike lift

I got the Harbor Sheight motorcycle lift table on sale and the damned jack wouldn't lift it, even after a shitload of bleeding as per the manual. They did send me a replacement, but 10 weeks later it arrived, and it was for the newer design. Great. So tonight I wrestled the jack out of the lift and messed with it a bit.

I didn't really get any pictures, but it's basically set up like a bottle jack, with check valves and the like. Cheap Chinese crap is notorious for bad check valves, at least to me. I've seen it in propane tank-top heaters and now in jacks.

Anyway, I'm not really sure what fixed it as I gave it a good going-through, generously soaking every inch of my workspace with whatever nasty used motor oil they shipped the thing with. My guess would be either the washer that holds the pump check valve ball  (28A) was backwards or the rubber tube that held the release ball (30A) was in the way. I put it back together after flipping the washer (28A) and without the rubber tube (30A) and it's behaving, so I'm going with it.

I also screwed down the adjuster relief screw (16A) from 3.5 turns out to 0.5 turns out because 1) IDGAF and 2) It's my understanding that this will increase the weight the jack will hold before the overload protection trips the valve. I guess. I void warranties.