MIDNIGHT RIDER
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- Sep 29, 2005
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I have just dis-assembled a belt-driven vacuum-pump.
One thing I found out that I have never seen mention of in any book or manual, THE PUMP DRIVE HAS AN OIL CHECK/FILL PLUG.
Is there any TECH articles, exploded assembly pictures, parts lists, etc. on these things anywhere ??
They are actually very simple, having only a handful of parts, a drive-shaft, three different kinds of bearings, an eccentric cam, and that is about it.
The shaft on this one has slight roughness in the area of the central needle-bearing and the outer sealed-bearing slips and spins in the bore.
When I knocked it all apart, there is a bearing that consists of an outer shell full of loose needles that the cam rides inside.
The diaphragm operating rod actually rides on this bearing, instead of the cam's surface itself.
What I need to see is just exactly what this bearing/cam assembly should look like when assembled.
The one I have went in a million pieces, without me getting to see just how it all should go together.
Even considering it's minor ailments, the diaphragm will instantly build from 26 to 29 inches Mercury, so all is good there.
Thanks.
One thing I found out that I have never seen mention of in any book or manual, THE PUMP DRIVE HAS AN OIL CHECK/FILL PLUG.
Is there any TECH articles, exploded assembly pictures, parts lists, etc. on these things anywhere ??
They are actually very simple, having only a handful of parts, a drive-shaft, three different kinds of bearings, an eccentric cam, and that is about it.
The shaft on this one has slight roughness in the area of the central needle-bearing and the outer sealed-bearing slips and spins in the bore.
When I knocked it all apart, there is a bearing that consists of an outer shell full of loose needles that the cam rides inside.
The diaphragm operating rod actually rides on this bearing, instead of the cam's surface itself.
What I need to see is just exactly what this bearing/cam assembly should look like when assembled.
The one I have went in a million pieces, without me getting to see just how it all should go together.
Even considering it's minor ailments, the diaphragm will instantly build from 26 to 29 inches Mercury, so all is good there.
Thanks.