My model CAP 60p-OF runs up to 80PSI then won't shut off, and can't get past 80 PSI. All they would tell me at the customer service was to take to a repair center. SInce that involves a $20 fairy ride and an hour and a half each way, I'd like to fix it. I've tightened all the fittings and the head. Not sure where else to look. It seems like a blow by but I can't figure where? Help?
Air Tools & Compressors - Stanley - NEW Bostitch 2 HP 6 Gallon Electric Air Compressor
Answers & Comments
If your compressor is still under warranty it may be worth the trip, anything you do to it will stop/void your warranty. That being said, your compressor won't shut off until the pressure switch sees 130 to 150 psi in the tank. A couple problems will lead to what is happening to your compressor. First check your valve plate assembly, it's right under the head. All of the reed valves must be in perfect condition, no cracks, chips or warpage and laying completely flat against their respective holes. Basically the the bigger the leak around the valves, the less pressure that can build up in your tank. If you are getting 80 psi you're looking for a very small leak. If the valve plate is OK check your piston and cylinder. The cylinder should be very smooth and the ring on the piston must be tight and facing up all around the piston. They are bad for a small section turning downward and letting air leak out. Just like the valves the smaller the leak past the piston, the more pressure you'll get so look for any imperfection in the cylinder or piston ring. A fairly good place to find parts is www.ereplacementparts.com. You can get a good breakdown of your compressor and order parts from them.
My conpressor shut off in the middle of a compression cycle and will not restart. What part could be causing this?