Question about General Air Tools & Compressors
Increase the tension on the air pressure switch spring. It will be the item that usually sits by iteslf on the compressor and has the wire from the motor and wire from the mains power coming into it. The adjustment may or may not be visible with cover in place.
You will see the nut with a washer and spring beneath it. You may or may not need to hold the shaft the nut is when you turn the nut clockwise. It depends on brand of switch. Use insulated tools and use care. Do not force anything because the switch itself may be at fault- if nut is threaded to end of threads on shaft already so you would need an extra deep scket to reach the the nut, the switch may need replacement. Drain tank and leave open if switch replacement is needed.
Posted on Feb 12, 2012
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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
You have a valve plate problem . It could be a slipped "o" ring to a bad reed valve. There are rebuild kits for that purpose. The kits include a valve plate assembly. It covers all the bases. When you look at this area pay attention to the partitions of the head gasket/"o"ring. You may avoid the cost of the kit.
Posted on Feb 25, 2009
You might have a broken valve. You'll need to pull the head apart. But make sure replacement parts are available first. Does this unit have an unloader valve on it ? That could also be your problem. You probably should check this first
Posted on Apr 01, 2009
It sounds like you may have a broken reed on the diaphragm plate. This is located at the block. Remove the cover, and look for a cast metal assembly with fins. It will be attached to the side.
Posted on Apr 23, 2009
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