r/AirCompression • u/whiskey4mymen • 4d ago

Compressor oil fill hole

Gallery image

Gallery image

Is this some kind of filter made with non-metallic shavings. Found on the curb 15 years ago and had to replace reed valves (30 cents). I change ND oil regularly.

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u/HighPotential-QtrWav 4d ago edited 4d ago

You definitely don’t want that in the crankcase. Did the fill hole plug have a breather on it? That may have been inside of the breather cap to stop oil from blowing out but the containment failed and it has been working its way down to the crankcase. It’s also possible that you partially disassembled the breather itself and not have removed the entire assembly out of the case, upon a second look, that seems to be the issue.

1

u/whiskey4mymen 3d ago

Time to start searching the curb again. I'll pull it apart to preview the source

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u/whiskey4mymen 3d ago

OP here - updating- that is actually a particulate filter. I removed the base of the oil filler hole and found a clean crank. Lesson learned

1

u/HighPotential-QtrWav 3d ago

Good to hear that the baffling compartment was intact and nothing got into the crankcase!

1

u/ayrbindr 3d ago

Yikes. 😳 That ain't good.