- posted 13 years ago
The "00-Reassembly" subdirectory shows pictures of this compressor
being reassembled, with new motor installed. I bought this compressor
without the motor, although the old motor was fine. (outcome of
negotiations and part of why I paid only $200 for this one).
This is a pressure lubricated pump and that is why this compressor is
I had a 10 HP Reliance motor that I installed (it was new in box). The
old pulley had a 1.25" bore in the bushing, the Reliance has a 1 3/8"
shaft, so I had to bore the pulley bushing.
At the moment, it seems to run and pump air. It is also rather
quiet. Presently, I am reusing the pulley off the 7.5 HP motor, and
installed a new regulator from 120-145 PSI, so I am not using the full
power of it.
I also have a couple of minor problems that I want to look at more
One is that the motor vibrates a lot. I am not yet sure why. One
possibility is that I did not bore the bushing properly on-center (did
this on a lathe, though), and another is that the belts are old and
lost some flexibility. Visually, one belt out of three (the middle
one) seems to be "flying up and down" as it rotates, I would expect it
to be steadier.
The good test from it would be to disconnect belts, and run the motor
with pulley but without belts, and see if vibration continues. If it
does, I will know that I did a bad boring job, and will simply buy a
new two piece pulley from McMaster.
Another problem is that there is some air leak somewhere in the area
where the pressurized air leaves the pump and enters the aftercooler.
I am not yet sure where it is. It is minor, but I should have none.
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