How do you rebuild an air compressor pump?

Rebuilding the air compressor pump restores the pump's ability to efficiently compress air. If the tank won't build pressure because the pump seals or valve plate are worn, rebuild the pump using the manufacturer-approved air compressor parts. Most air compressor models use a kit for rebuilding the air compressor pump.

Do air compressors need a rebuild kit?

Most air compressor models use a kit for rebuilding the air compressor pump. The rebuild kit includes the cylinder sleeve, piston and seals. Follow the steps in this repair guide and video to install the air compressor pump rebuild kit on Craftsman, Porter Cable, DeWalt and Devilbiss air compressors.

How does an air compressor pump work?

The air compressor motor drives a piston that compresses air in the pump cylinder to fill the compressor tank. Worn pump parts— such as the valve plate and seals—stop the pump from compressing the air and filling the tank. Rebuilding the air compressor pump restores the pump's ability to efficiently compress air.

How do you replace a reed pump head?

Position the pump head over the new valve plate with the muffler side of the pump head over the reed valves on the valve plate. Reinstall the pump head mounting bolts. Tighten the pump head mounting bolts to 7 foot-pounds. Reinstall the outlet tube on the pump head. PHOTO: Place the head over the valve plate.

How do I remove air pressure from my air compressor?

01. Unplug the air compressor’s power cord from the wall outlet. Pull the ring on the safety valve to drain all air pressure from the tank. Wear work gloves to protect your hands. PHOTO: Unplug the power cord.

What should I do if my air compressor is too low?

If the capacity of the air compressor is really too low, check the following: Check differential pressure over oil separator. Replace separator when necessary. Check and replace compressed air filters (if installed). Compressor does not unload. Check if pressure switch is correctly set and working.