64b100-14-14. 1 hp air compressor knocking

by Bill
(Aledo,il.)

Compressor works good up to about 50 lbs then starts knocking Will pump up to 100 lbs. but real noisy

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Sep 09, 2015
compressor knocking
by: Bill

If you are sure the knocking is internal and not something being moved or vibrated outside of the pump, then first check the power train.

Check the motor to pump connection, and then, if you find nothing, I would conclude it's happening inside the pump.

That means a tear down to have a look, and to acquire necessary parts for a repair.

As a guide to determine if it's worth fixing, a new 1 HP compressor runs from $100-$150 or so depending on the source and what's on sale.

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