Air Compressor: Won't build tank pressure

Shut the drain valve at the bottom of the tank if it's open. Check for air tank leaks. Replace the tank if it's leaking. Tighten loose air tube fittings on the tank, check valve and pressure switch to prevent air leaks. Rebuild the pump if it won't compress air.

These repairs may help solve your Air Compressor problem:

Rebuild the air compressor pump

Compression ring

Worn pump parts and seals prevent the pump from compressing air. If the pump won't compress air, rebuild the pump with new parts and seals.

For manuals, repair guides, and specific part recommendations, enter your model number.

Replace the air compressor valve plate

Valve plate

The valve plate regulates airflow into and out of the pump cylinder to compress air. Replace the valve plate if damaged.

For manuals, repair guides, and specific part recommendations, enter your model number.

Tighten air compressor air tube fittings

Check valve

Inspect air tube fittings regularly. Firmly tighten any leaking air tube fittings.

For manuals, repair guides, and specific part recommendations, enter your model number.

Replace the air compressor safety valve

Safety valve

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 or pops open at normal operating pressure.

For manuals, repair guides, and specific part recommendations, enter your model number.

Replace the air compressor tank

Tank

Don't try to fix a leaking air compressor tank. Replace the tank if it leaks air.

For manuals, repair guides, and specific part recommendations, enter your model number.

Replace the air compressor air tubes

Air tubes

Air tubes carry compressed air from the pump to the tank and from the tank to the outlet supply fitting. Replace air tubes if damaged or leaking.

For manuals, repair guides, and specific part recommendations, enter your model number.