Question about Craftsman Air Tools & Compressors
I've been working on air compressors for a while now and so far haven't found any that give a specific amount of oil to put in the air pump crank case. They all have one of two methods to get the oil to the proper level. First, and my favorite, is a sight glass at the bottom of the crank case. About the size of a quarter, it lets you see how much oil is in the pump as you add it. Usually they have a red center dot which is where you want the oil level. A little over or under is OK but the sight glass should not be completely full or completely empty, both are hard on the pump and drive motor. Another method is a dip stick usually on the end of the fill hole cap. Only bad thing about these is you have to put in some oil, check the oil level with the dip stick, then add more oil and check it with the dip stick until you get to the full mark. Again, not over and only a little under is where you want the oil level.
Posted on Mar 18, 2011
Drain and then pour 16 FL Ounces of non-detergent SAE-20 oil into the crankcase. Compressor oil from your hardware store is usually fine, but try to find a synthetic, it will last for years before needing changed. DO NOT USE ANY DETERGENT OIL IN THIS PUMP, IT WILL EVENTUALLY RUIN IT!!!
That is an awesome old pump you have there and parts are unbelievably still available for it. Take care of it, keep the filter clean and it will easily last another 25+ years! Most that usually happens with that pump is the reed valves may need changed.
Posted on May 02, 2015
Do you know what the model number is for your compressor?
Posted on Dec 11, 2014
I have same pump but mine has 5hp motor I have moisture and oil in air tank oil was grey when I bought it so I changed it but seems like still have oil getting in tank gets to max pressure pretty fast no noises what should I do ? Replace piston rings or reed valve
Posted on Jul 20, 2018
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Posted on Jan 02, 2017
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