Question about Craftsman 3 gal. Air Compressor, 1.5 hp, Horizontal k
Compressor was working normal for 18 months but suddenly it will no longer build up tank pressure beyond 35 psi. Pressure build up is also slower than normal as if there is a large air leak but there are no apparant air leaks or loose connections. Motor sounds the same. Checked the cylinder head bolts and air tube connections, removed and refitted the Check Valve. Pressure Relief Valve isn't leaking. Tank Safety Valve isn't leaking. Oil is over half height on the sight glass. Regulator is wound fully in (makes no difference where else it is) and regulator pressure gauge is reading = to tank pressure. Tank drain valve is closed. Air Filter is clean. Disconnected the accessory air hose to eliminate it from the trouble shooting. Have removed (and reconnected) the Pump outlet tube and can feel air delivery but don't know if this is high or low compared to previously. It's as though the Pump can't deliver. Are Pumps a weak point?
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
Pull head check ig gasket is split we buy these in salvage loads and brand new the gasket is split and losing pressure no build up beyond 35 lbs this is what we find 9 out of ten times good luck
Posted on Sep 30, 2009
Did you ever figure out what the problem was with your compressor? I have the same model compressor and the same pressue issue although mine will make it upto 60PSI and stop. No obvious problems. Any help would greatly be appreciated.
Posted on Oct 01, 2009
So if you have done so many steps of investication,please do one last thing before going to cylinder head,see if the hole of the suction port is not blocked by defective air filter sponge.if problem is internal,which means,perhaps the cylinder head is damaged,or the valves in the valve plate is damaged.so remove the six bolts of the cylinder head,check all internal parts and you will get the solution.
Posted on Sep 28, 2009
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Posted on Jan 02, 2017
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