Speedaire model #3Z922A service

by Heidi
(Silverton, Oregon)

We have an old Speedaire model #3Z922A and it has been making a strange sound like air is leaking from somewhere, but its not. It hardly ever get used except for filling a tire here and there. Which is all that we need, but I want it to keep working, so what kind of maintenance can be done on it?

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Jun 15, 2018
by: Doug in s.d.ca

It looks like it may be a rotary vane pump.

If that's the case, you can change the oil, or rebuild it. The noise is probably either a stuck vane or an end seal.

You could sign up at one of the sites that allege they have the manual...just be careful.

Good luck.

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