Question about Chicago Pneumatic 1/2" Air Impact Wrench

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My 1/2" CP air wrench just blows air thru when I pull the trigger

I worked fine for years, I always kept it oiled, now it just blows air thru when I pull the trigger, does not turn. Thanks, Doug

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I have ran into this many times, even though you keep it oiled dirt can and will get inside. what you need to do is unscrew the 4 alen head bolts and pull the nose off. You will see a shaft that looks kind of like a crankshaft with 5 or 6 flat carbon fiber plates sitting loosely in groves around the shaft. pull those out and clean them with solvent and check them for damage or wear. clean the inside of the gun with solvent or brake cleaner, reassemble and it should work fine. If the plates need replaced then you should be able to order them from a tool supplier,and they are not that much.

Posted on Jan 17, 2009

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Posted on Jan 02, 2017

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