3Z355G has loud knocking noise

by Jerry
(Belton, SC)

My compressor from time to time will start making a loud knocking sound like metal hitting metal. It does build pressure & fills the tank but I would like to do a very minimal rebuild on the compressor. Can't find any rebuild kits/parts or rebuild manual. What can you suggest the problem may be & how can I fix it. Thanks!

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Aug 12, 2017
compressor knocking...
by: Doug in s.d.ca.

Could be the pump.

But (and I'm guessing here it's a pump driven by a belt) check that the belt tension is OK, and that the sheaves are tight on their shafts. Not to mention the pump and motor secured.

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