Dewalt N087118SV Compressor Pump & Motor Assembly

The Dewalt N087118SV Compressor Pump & Motor Assembly is a replacement pump and motor assembly designed for compatible air compressors. This assembly restores proper air compression performance, motor operation, and tank pressure generation when original components fail or wear out.

Common Issues This Part Helps Fix:

• Compressor motor hums but does not build pressure.

• Slow tank fill times during operation.

• Pump overheating during extended use.

• Excessive vibration or abnormal compressor noise.

• Motor trips breaker during startup cycles.

Compressor Runs but Produces Little Air

Quick Check: Observe whether the tank pressure gauge rises slowly or stalls completely.

Fix Suggestion: Replace the worn or damaged N087118SV pump and motor assembly if the compressor pump is no longer compressing efficiently.

Prevention Tip: Keep intake filters clean to reduce strain on the compressor pump components.

Motor Overheats During Use

Quick Check: Feel for excessive heat around the motor housing after short operation periods.

Fix Suggestion: Inspect the assembly for internal motor wear, restricted airflow, or failing pump bearings and replace the unit if overheating persists.

Prevention Tip: Operate the compressor within recommended duty cycle limits to prevent thermal overload.

Loud Knocking or Vibration Noise

Quick Check: Listen for metallic knocking sounds or unusual shaking while the compressor is running.

Fix Suggestion: Install a new N087118SV assembly if internal pump components or motor mounts are worn out.

Prevention Tip: Periodically tighten mounting hardware and place the compressor on a stable surface during operation.

Breaker Trips When Compressor Starts

Quick Check: Check if the compressor immediately shuts off or trips the breaker during startup.

Fix Suggestion: A failing motor winding or seized pump inside the assembly may require complete replacement of the compressor pump and motor unit.

Prevention Tip: Use the compressor on a properly rated electrical circuit to avoid repeated startup stress.

Customer Experience: My Dewalt compressor was taking forever to fill the tank. After replacing the N087118SV pump and motor assembly, pressure built normally again.