Question about Craftsman Air Tools & Compressors
Posted by Anonymous on
W/o other details, one can only presume that the tank pressure switch has be adjusted to high or it has failed/broke. Adjust pressure downward (if not already). Replace tank switch.
Posted on Jan 28, 2015
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Posted on Jan 02, 2017
The needle valve that you see is the unloader which releases air pressure from the discharge line after set pressure is obtained. If air continues to leak after the compressor shuts off, the check valve installed in the tank is leaking air out of the tank. Follow the air discharge line from the compressor to the tank. There you will find a brass valve which is the check valve. Simple test is to remove the smaller airline (1/4") from the brass valve and check for air leaking. If leaking remove brass valve and check for debris under the white seat. If you cannot clean the valve, replace with generic check valve from www.grainger.com. It will cost less than factory part. Just order the valve considering the fitting sizes that you need. For exact replacement,( www.sears.com parts). If you sears model # begins with WL then your compressor is made by campbell hausfeld and parts may be ordered from www.chpower.com. Good Luck with you repair and email if you have more questions.
Posted on Mar 21, 2009
The compressor will not auto shut off until it reaches the preset pressure which is usually around 100-130 psi - your problem is leakage of air from the oil filler cap suggesting that you have a failed internal valve.
Posted on Sep 24, 2009
Does it run? Does it stop running? Does the pressure gauge read anything at all? Is there a regulator on it? Can you take the reg off? A bunch of things to check, get it running and let me know what you find, and I will try to tell you what's next.
Posted on Feb 27, 2010
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