Talking in the past tense about compressor working fine before.
Is it working fine now"
If it is, pumping the air tank full, and air not coming from the end of the hose, the end tool valve maybe jammed, or the hose plugged. (sometimes the inner lining of the hose separates from the reinforcing mesh and clogs the hose)
To test this theory, take the hose off from the tank (when no air is in the tank), start the compressor and see if the air is pumping out freely. If it is then the compressor is indeed fine.
Take the tool of the end of the hose, then reconnect the hose and restart the compressor. This will tel you if either the hose or the end tool is at fault.
SOURCE: Compressor will not air up tire
Is it depressing the valve in the air chuck, sound dumb but I just had an air chuck that gave me problems replaced and it works fine.
Worth a look.
SOURCE: I have an a craftman air compressor and it builds
Hi judyhipkins...
Here are a few things to check, you may have already checked some of these.
Electricity...Compressors will run best with full 115Vot 15AMP/Or 220V electrical supply from a circuit, over the shortest electrical cord as possible.
Air Leaks..Place your ear close to the compressor and listen for air leaking, if you hear air that is not normal and means you have to locate and repair whatever it is that is leaking.
Check the air unloader valve... The air unloader valve will blown out air when you turned off the compressor, that is normal.
But it should not have air leaking out of it all of the time. If so then it is faulty and in need of repair/replacement.
Valves...If either the intake or exaust valves fail, breaks, or fails to seat, then your compressor will run 24 hours a day and never build up to the correct pressure for shut-off.
Gaskets...Check to see if your gaskets have failed.
You could have a gasket failure between the pistons and you will never know it because it shows no external air leak.
If this situation happens then the air will only cycle between cylinders and never build up the correct air pressure.
One way to check the gasket is remove the air filter, then put your hand over the intake.
If correct then it will **** you hand against the intake.
If the valve or valves have failed then you will feel the air sucking in and blowing out.
Piston Rings and Cylinder...The piston rings could be stuck,broken, or worn and not allowing the correct pressure to build up in your tank.
A worn cylinder will also contribute to the problem of pressure build-up.
Pressure Switch...Check for air leaks at the pressure switch, it has a rubber diaphram that can fail and leak air out of the system.
Please take time to rate me
SOURCE: I have a Stanley Bostitch
Some Bostitch compessors are very unique in that they intake air from below the piston. If you cannot find an air filter, then your compessor has reed valve built into the piston that may cause problems. If you have an air filter on the head of the pump, then you have reed valves in the head. When the reed valves fail, there will be very little or no air pressure. Second problem with all compressors is the in-tank check valve. This valve allows air to enter the tank and not back-out into the compressor. Easy to check. Add air into tank with another compressor thru the quick connect and listen for air leaking around the head or pressure switch. If no leaks and pressure holds in the tank then valve ok. Examine the condition of the cylinder and piston ring by rotating the crank by hand so that the piston is at top of cylinder. Look for scratches around upper part of cylinder wall. If scratches, then replace cylinder and piston ring. If top of cylinder looks good, then suspect reed valves. Good luck
try looking at machine mart they keep hoses &connectors.
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