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Seeking advice for a 1946 Westinghouse 2G air compressor

TheRestorationMan

New member
Joined
May 26, 2026
Messages
3
Location
Milwaukee, WI
Looking for advice on a 1946 Westinghouse 2G air compressor. It has the following:
• Westinghouse ½ hp, 1725 RPM, 115/230-volt motor
• Westinghouse 2G compressor
• Westinghouse air brake stamped tank – believe to be 30 gallons based on a 1951 catalog.
• Westinghouse pressure gauge.
• Square D pressure switch.
This unit works fine and holds air without any leaks but takes 10.5 minutes to fill the tank from empty. This is my first vintage compressor, and don’t know if this is normal or if it needs a rebuild. My gut tells me this is not normal. I see kits available from a couple of suppliers and would like to rebuild the compressor if it needs it. This is my first go around with a compressor, any advice on what should be done would be greatly appreciated.

Westinghouse.jpg
 
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Citation

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Joined
Jan 20, 2016
Messages
3,228
Location
Indy
How many psi? It's possible nothing is wrong and it really does take that long. But knowing things like tank pressure, and ideally flow rate would help be certain.
 
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TheRestorationMan

New member
Joined
May 26, 2026
Messages
3
Location
Milwaukee, WI
Thanks Citation, your reply got me thinking and I used google AI which states that it will take 12.1 minutes to fill the tank to 120 PSI. So, it looks like it is still working per specs. I plan to clean it up more, paint it and try to make a new Westinghouse logo for the tank. What I really like about this is how quiet it is, it is nothing like the modern compressors I have been around.
 

Citation

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Joined
Jan 20, 2016
Messages
3,228
Location
Indy
Glad you found some information. That 12.1 lines up with what I estimated (12:08 mm:ss)
 
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