Question about Air Tools & Compressors
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Posted on Jan 02, 2017
SOURCE: air compressor leaking
The problem that you are having is caused by the in tank check valve not holding the tank pressure. Simple test is to carefully loosen air-hose that feeds air to tank and check for air leaking. Replace check valve if leaking. Generic parts may be used. Enjoy
Posted on Dec 07, 2008
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
tap on the check valve with a metal object. Its sticking open. The check valve is the brass fitting on top of the tank. When the valve sticks open it emits air from the area of the engine. If that doesn't work (which I would be surprised it doesn't), you'll need to purchase a new check valve. Good Luck!
Posted on Jul 02, 2009
It's just too hot. Blow out the radiator weekly. There is an oil temp switch that might need replaced but the radiator is the most common problem with screw compressors. You can check the settings in the control panel, where you turn it on and off. It should be set for a high temp of 185°.
Posted on Aug 08, 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
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