Quote:
Originally Posted by Six862m6
No, the actual diaphragm in the pump housing is not present there. That thicker O-ring is not used at all by my pump head's design (but is present in both the RA and LMC pump heads). Check Hunter757's posts in this thread that show some pictures on the diaphragm that I'm talking about, mine is identical (but still in one, working piece!). I don't have a picture of the diaphragm design in the newer style pumps.
Also I am almost sure there is no hole in the top of my metal cam gear. I won't swear on that but I'm pretty sure. I know there isn't in the plastic cam gear sent with the pump.
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Here are a couple of photos of my original cam gear that show the hole.