Official Stanley Bostitch air compressor parts

How to fix your Stanley Bostitch air compressor when it won't build tank pressure

Shut the drain valve at the bottom of the tank if it's open. Check for air tank leaks and replace the tank if it's leaking. Tighten loose air tube fittings to prevent air leaks. The safety valve pops open to relieve excessive air pressure if the pressure switch fails to shut off the air compressor at the cut-out pressure setting. Replace the safety valve if it leaks air constantly. Worn pump seals prevent the pump from compressing air. If the pump won't compress air, rebuild the pump. The valve plate regulates airflow into and out of the pump cylinder to compress air, so replace the valve plate if damaged.

Common Stanley Bostitch air compressor parts that sometimes need replacement

• Air filter. Attached to the pump inlet, the air filter screens impurities from the incoming air.
• Connecting rod. The connecting rod connects the piston to the crankshaft or eccentric bearing to move the piston up and down in the cylinder.
• Cylinder head. Fixed above the valve plate, the cylinder head houses the air inlet and discharge ports.
• Motor. The motor spins the crankshaft which drives the piston up and down in the cylinder to compress air.