Question about Air Tools & Compressors
I have Craftsman 919.152920 air compressor when you turn it on it runs until about 30-40 pounds of presure than shuts off if you turn it off and back on again it sounds like it is in labor trying to run but then nothing what could cause this
If you go to hammerwall.com and look up 919.1529 it will take you with a bit of mucking around to a Sears manual close to your model. Do not click on any of the big green download buttons. Click on the smaller blue message download bars. It tells you basically that your compressor has an internal overload which shuts the motor down if it overheats. the reason for overheating can be low voltage but also could be a stuck pump. To check turn off the power and diconnect the ppower cord from the wall. You should be able to turn the motor and pump with the drive belt. If the pump and motor will not move easily remove the drive belt and see if the motor and the pump turn freely on there own. If one or both are tight it will probably be the motor bearings if the motor is tight or the rings in the compressor if the pump is tight. It depends on your level of mechanical experiance as to wether you want to go further. Small 110v or 240v motors are a pain to pull down and the cost to repair are probably not worth it. If someone you know has a clamp tester and a test plug they could measure the amperage draw with the drive belt off and on. The amp draw should not be more than 10 amps even if you have a fiveteen amp circuit. The motor should have a sticker telling you what the amp draw should be. If all this info is getting beyone you I would suggest a visit to a serviceman for a quote.
Posted on Jan 18, 2013
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Posted on Jan 02, 2017
It sounds like the internal circuit breaker in the motor is heating up and then the breaker trips to shut down the motor. This is the protection so you don't have a fire if the motor burns up. The smell you have is the coils in the motor. Sorry to say that you will need a new motor for this unit. I hope this helps out.
Posted on Jan 17, 2009
I have worked on many makita compressors and have run-across this problem on a few of them. Your compressor has a check valve that is supposed to hold tank pressure after the switch reaches set pressure. There is an unloader valve built into the pressure switch that releases the pressure in the discharge hose after the unit shuts off. The unloader allows the compressor to restart with-out any pressure in the discharge line. If the brass check valve is leaking pressure back into the system, air will leak out of the unloader valve. Follow the discharge line to the tank and you will see the brass check valve. To test valve for fault, run the compressor till it builds around 80 psi and unplug the unit from the wall outlet. Remove the 1/4" hose connector from the check valve and check for air leaking out of the valve. If it is leaking you can order form www.toolpartsdirect.com. or call the makita 1-800 number. The price is about the same. Good Luck on your repair.
Posted on Mar 19, 2009
I have a Craftsman 2hp/12 gallon Air compressor that does basicly the same thing, will start, run for about 3 seconds and stop. I replaced the pressure switch but still have the problem. Any suggestions?
Posted on Apr 13, 2009
your motor overheated from too low a voltage if theres a manual reset try this,also replace the two motor start and run capacitors on the motor body
Posted on Dec 24, 2009
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