At Fixya.com, our trusted experts are meticulously vetted and possess extensive experience in their respective fields. Backed by a community of knowledgeable professionals, our platform ensures that the solutions provided are thoroughly researched and validated.
- If you need clarification, ask it in the comment box above.
- Better answers use proper spelling and grammar.
- Provide details, support with references or personal experience.
Tell us some more! Your answer needs to include more details to help people.You can't post answers that contain an email address.Please enter a valid email address.The email address entered is already associated to an account.Login to postPlease use English characters only.
Tip: The max point reward for answering a question is 15.
Pressure switch: The pressure switch may not be shutting off the compressor when it reaches the set pressure level. If this is the case, the switch will need to be replaced.
Check valve: The check valve prevents the compressed air from flowing back into the compressor pump when it is not running. A malfunctioning check valve can cause pressure to continue to build up, even when the compressor is idle. A damaged or worn-out check valve may need to be replaced.
Piston rings: If the compressor's piston rings are worn or damaged, air can leak past the piston and cause pressure to continue to build even when the compressor is idle. In this case, the piston rings will need to be replaced.
If you run the compressor with the gauges removed, does air come out of that port? If yes, does the compressor build up enough pressure when the gauges are attached to give you enough air pressure at the end of the hose? If yes, then the gauges are bad.
If you are not getting enough air pressure to do any work, then there is still a problem with the compressor. Check the unloader valve (release valve) on the pressure switch to make sure it's not leaking when the compressor is running.
The problem with compressors not building pressure is usually a bad pressure switch or bad regulator. Does the motor shut off at 20psi or does it continue running and not build pressure? If the motor continues to run with no increase in pressure, the you should go over the machine looking for air leaks from your regulator back all the way to the motor. Any air leak while the compressor is running can cause the pressure to "peak" way before the intended shutoff that it is regulated to.
Chances are that the pressure switch, were you turn the compressor on and off, is bad. When they go out, they no longer build pressure to the regulated level you are looking for. If you haven't already, try turning up the regulator, if no more than 100psi build's, then it's a sure thing, bad pressure switch.
Many craftsman compressor are built by champbell hausfeld using a dry type of cylinder and piston (no oil, no crankcase). If dry type, check for worn cylinder and piston ring. Pieces of the vinyl ring can jamb between the reed valves in the head causing air to escape from the intake. If your compressor has a crankcase and oil, check for broken reed valves in head. Spray soap solution on hoses, checkvalve, drainvalve, and fittings to check for leaks. Most likely problem is reed valves broken or open. Parts are available from sears or match parts to chpower.com. enjoy
×