DeWalt D55166 - User Manual

Questions and Answers

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John HarrisAug 12, 2025
What to do if my DeWalt Air Compressor is not supplying enough air to operate accessories?
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  Alisha WilsonAug 12, 2025
  If your DeWalt Air Compressor isn't supplying enough air, first, try decreasing the amount of air you are using. Also, make sure the compressor is large enough for the accessory by checking its air requirement. If the air requirement is higher than the CFM or pressure supplied by your air compressor, you'll need a larger compressor. Finally, inspect the air hose for any holes and replace it if necessary.
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Cathy RiosAug 20, 2025
How to fix air leaks in my DeWalt D55166 Air Compressor?
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  janicedillonAug 20, 2025
  If you notice air leaks coming from your DeWalt Air Compressor, start by tightening the fittings where you hear the air escaping. You can use a soapy water solution to help identify the leaks. Be careful not to overtighten the fittings.
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Kyle CurryAug 23, 2025
What to do if the regulator will not shut off air outlet on my DeWalt D55166?
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  kkleinAug 25, 2025
  If the regulator on your DeWalt Air Compressor will not shut off the air outlet, it means that the regulator is damaged and needs to be replaced.
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cruzashleeAug 27, 2025
Why does the pressure reading on the regulated pressure gauge drop when an accessory is used on my DeWalt Air Compressor?
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  Alison TaylorAug 27, 2025
  If the pressure reading on your DeWalt Air Compressor's regulated pressure gauge drops when using an accessory, it's likely that the regulator isn't adjusted correctly. Some pressure drop is normal; however, if the pressure drop is excessive, adjust the regulator as instructed in Regulator under Features while the accessory is in use.
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whitejesseAug 31, 2025
What to do if there are air leaks from the safety valve of my DeWalt Air Compressor?
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  Cheyenne AdamsAug 31, 2025
  If the safety valve on your DeWalt Air Compressor is leaking air, try manually operating the safety valve by pulling on the ring. If the valve continues to leak after doing this, it needs to be replaced.
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Mark WardSep 4, 2025
Why does the regulator knob have continuous air leak in my DeWalt D55166?
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  Nicholas ChenSep 4, 2025
  If the regulator knob on your DeWalt Air Compressor has a continuous air leak, the regulator is likely damaged and needs to be replaced.
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Thomas McbrideSep 7, 2025
What to do if there are air leaks in air tank or at air tank welds of my DeWalt Air Compressor?
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  Jacob GrahamSep 8, 2025
  If the air tank on your DeWalt Air Compressor has leaks or leaks at the welds, the air tank is defective and must be replaced. Do not attempt to repair the leak by welding or any other modification, as this could weaken the tank and create a risk of bursting.
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Spencer WilliamsNov 14, 2025
Why will my DeWalt D55166 motor not run?
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  Denise GeorgeNov 14, 2025
  If your DeWalt Air Compressor's motor won't run, there are several potential causes. The motor overload protection switch may have tripped. The tank pressure might exceed the pressure switch cut-in pressure. The extension cord could be the wrong length or gauge. A fuse may be blown, or a circuit breaker tripped. For assistance with the overload protection switch, refer to Motor Overload Protection under Features. The motor will start automatically when tank pressure drops below the cut-in pressure. Check the extension cord for the proper gauge wire and length, referring to the Extension Cords paragraph in the Installation section. Inspect the fuse box, replacing any blown fuses and resetting the circuit breaker. Ensure you're using the correct type of fuse and consider disconnecting other ...