Introduction

Repair for a faulty regulator on a Dewalt DWFP55130 air compressor.

Warning: Unplug power and remove all air from tank before attempting.

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    • Unscrew and remove the black plastic regulator knob. While unscrewing, it will reach a stop and will keep like cannot unscrew further. Just break through the stop and unscrew to completely remove

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    • Use needle nose pliers to remove the plunger.

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    • Very gently unscrew the valve with a Philips #3 screwdriver. Take care not to destroy the plastic part

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    • Use needle nose pliers to pull plastic valve assembly out

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    • Replace screw if broken. Photo is not of the original spring. The original spring had corroded and broken into 50 pieces. The spring doesn’t have to be a perfect fit, just has to hold the part in place. The original spring was approx 6mm wide, 20mm tall and 0.5mm thickness wire.

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    • Carry out steps in reverse to reassemble compressor and you’re done

Conclusion

To reassemble your device, follow these instructions in reverse order.

Imran Latif

Member since: 09/02/23

158 Reputation

5 comments

do you know the replacement part numbers just in case?

myke -

The replacement parts are not listed in the manual and not available for sale. Hence this workaround.

Imran Latif -

what type of spring did you replace it with?

Gaeilge 6 -

Random screw I found from a 3D printer part. Size and shape were both different than the original spring. As long as the dimension are similar to 6mm wide and 20mm tall, it would work. The spring I used was not 6mm by 2omm but close enough that it worked.

Imran Latif -

Replaced and still leaks. Tried replacing o ring and still leaks.

Rollin Blanton -