The grease pot appears to feed the pistons and cylinders of the compressor. The pot itself is basically a piston and cylinder with a small hole in the bottom of the cylinder for the grease to flow into the pump and the piston is driven by the feed screw. There's a floating rubber baffle in between the bottom of the cylinder and the piston that is there to regulate the flow of lubricant into the pump. So when there's no pressure on the grease the rubber baffle should stop the grease from entering the compressor, but when you tighten the pot screw it should force grease in somehow.All this talk about the kind of grease. I'm curious to know just where does the grease end up? If you aren't forcing it into the top of the compressor when you turn the pot screw how does it get "sucked" into it without it sucking ALL the grease into it at one time? Folks say the grease never gets down to the bottom around the crank or rod so I'm assuming that would need to be greased by hand? Which would require taking it apart.
Thx
Ray
Looking at it, it does not seem like something that would work well. Intuitively it seems like the baffle would block the flow of grease whether it was under pressure or not. On my own pump the baffle seemed to be partially submerged in the grease within the cylinder. Having removed the baffle and run the pump though I can say that the next time that I inspected it afterwards the grease pot was empty. So it appears that the baffle was indeed stopping the flow of grease.
The bearings on the crankshaft down below are completely isolated from the grease feed up above. They were relatively easy to get at though and I can't see any reason why they would require special grease.
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