How much oil in an old sears twin cylinder 2hp 20 gallon compresser

by Carl
(New Jersey)

I have 2 older sears horizontal tank compressers, one is a 110 volt and the other 220 volt. Both have similar belt driven twin cylinders. I'm thinking I need to change the oil but am not sure how much to put in (capacity). I cannot find an old manual to give me an idea. Any suggestions?


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Bill says...

Carl, you identify the power capacity, but not the HP size of your compressor, though I suspect we're talking fairly small compressors.

If so, the oil in the sump will be measured in ounces, not in quarts.

Your compressor oil sumps will either have a sight glass to see the oil level, or an oil dipstick on the fill tube cap.

If the oil is low, measuring the volume as you drain it out won't work.

Drain it regardless, and starting with a quart, slowly fill the sump to the middle of the sight glass or to the point on the dipstick that shows full. Don't overfill.

There is a video about compressor oil on my Air Videos page, as well as a page of information on compressor oil, both linked from the navigation bar. Worthwhile seeing and reading, perhaps.

Cheers,

Bill

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Replace oil fill cap on oil lubricated compressor (Sears)

broke off and lost oil fill cap. Question: can I plug the hole with a solid plug or is it a vented plug

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Bill says...

I'm pretty sure that it's a vented cap. Which means... your wooden plug needs to have a small hole drilled right through it to allow air into the sump as needed. :-)

Bill

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Need pressure switch for 2hp 220v 150psi model #106153784

by Getitdun
(Tacoma, WA)

Need replacement pressure switch for part#CW2062
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Getitdun...

Since it appears as though Sears no longer supplied this part, my suggestion is to visit an industrial plumbing shop. Take your old switch with you if you have it.

The industrial shops should carry adjustable, 220v switches. You just have to make sure that all the parts connect properly.

Cheers,

Bill

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