Question about Air Tools & Compressors
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Posted on Jan 02, 2017
SOURCE: Pressure won't build up in tank
Your compressor is the oilless type that incorporates a vinyl/teflon piston ring and a cylinder that is open from the bottom. Remove the cover and push the piston to upmost position. Look for scratches along the upper portion of cylinder. If scratched, compression is leaking thru ring and will not fill tank. Replace with Sears part #k0650 cylinder /piston ring kit to restore full power. While the compressor is apart examing the valve plate and reed valves for wear. If worn replace with part #z-ac-0032. Reed valves tend to crack or loose their shape reducing efficiency. If cylinder and ring are in fair condition, then most likely reed/valve plate is the problem. Good luck and email if you have more questions.
Posted on Feb 01, 2009
your correct either the valves are worn or maybe just need cleaning as for the gaskets,idont know what part of the world your in but check out coleman on the internet or failing that ,i have maid these from gasket material suuplied from my local bearing supplier
Posted on Dec 03, 2008
Parts for coleman are available at www.mastertoolrepair.com your compressor is listed as L0502710. If however you like to tinker, you can make a pretty good reed valve out of aluminum can material or other (any ideas?). It is fairly easy to cut, does not last as long as factory stainless steel, but for short term, why not? Good Luck
Posted on Jan 10, 2009
Maurader1 an apprentice has this problem solved and is spot on. All these gurus and wiz need to stick to the basic and common sense. The first place your pump will give out after use or abuse is the gasket. All this garbage about defective reeds and defective pressure switch is a lot of nonesense if you first don't rule out the most common problem the head gasket. I'm cheap and this thing has paid for itself 10 time over. You can get a gasket kit for $7, but I fabricated a gasket out of the back of my notebook and sprayed some gasket spray and been working like a charm ever since.
Posted on Jan 04, 2010
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