Bostitch air compressor, CAP60P-OF, runs but will not build pressure.

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Old 10-24-13, 02:06 PM
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Exclamation Bostitch air compressor, CAP60P-OF, runs but will not build pressure.

Stanley Bostitch pancake air compressor model # CAP60P-OF runs but will not build pressure. Gauge will eventually read about 15 psi and a small amount of air will vent when I open the relief valve, but that's it.
This is what I have done so far:
1. Drain **** is closed.
2. Removed aluminum line at head, supplies air.
3. Removed aluminum line at tank fitting, supplies air.
4. Removed small, black line at tank fitting, supplies air.
5. Removed head, gasket looks fine and no obvious defects found to piston. I heard something rattling inside the head while I had it removed, shook it and a thin piece of metal fell out. Round in shape with one side jagged like it snapped off.
6. Adjusted pressure regulator, inside power switch cover, both directions.
 
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Old 10-24-13, 02:44 PM
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Welcome to the forums! The thin piece of metal was probably a part of a reed valve that is needed to build pressure in the tank. Google the model number and get a part number for the reed valves and replace them and let us know how it goes.
 
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Old 10-25-13, 06:28 AM
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Bostitch CAP60P-OF Parts List and Diagram : eReplacementParts.com
Going to need, intake valve, valve plate, and new head gasket.
If I had it that far apart I'd also remove the whole cylinder and check the piston rings and cylinder walls.
 
 

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