why is my air compressor all of a sudden making a loud knocking noise?

by peter
(greene, ny 13778)

Oil level is good, just recently changed, in a heated garage.?


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Bill says...

Hello Peter. I get asked this question periodically, and really, since I cannot see the air compressor running, or hear it while it is making this noise, I don't know how to answer the questions.

If the motor is still mounted securely to the mounting plate, and the pump is too, then either it would be a mechanical issue in the pump, or the motor.

Can you not isolate the knocking to a specific compressor part or area?

Cheers,

Bill

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Replacement compressor motor?

I have a bad electric motor and need to get a new replacement. Can I get one by giving the specs on the motor?






Hi Mr. Bentjones1977:

You might be able to pick one up if you have all the specifications for the motor you want replaced.

It sounds as though you have the skills to re & re a motor. Good on you! Not many of us do.

If it were me looking for a new compressor motor, I would ask my local compressor store where they get their compressor warranty work done, take my old motor there, and ask them to give me a new one that was the same.

Or, you will find somewhere near you I would expect, since I don't know where you are, a shop that specializes in electric motors. They rebuild them, re-wire the armatures, sell new, etc. I would find that shop and take the specs...or better yet, the whole motor to them and ask for a replacement.

Cheers,

Bill

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siezed engine air compressor

by wendy

Schramm air compressor
rain water entered exhaust and ended up in oil pan while sitting in a field for a long time. Can't turn motor.
HELP

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Bill says...

Wendy, not much can be done via the internet. It sounds like you need to get the compressor to a repair shop, and likely a tear down.

See REPAIRS linked from the navigation bar on the left, to check if a local compressor repair shop is listed.

Much luck.

Bill

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Repairing/ Replacing a cylinder head.

by Bob
(Herndon VA)

I have an older Sears home-type compressor (2HP 7-8 gal tank) It wasn't operating properly and I found a broken reed valve on the pressure side of the head. It appears to have been riveted in and therefore not an easy home fix. New replacement heads seem not to come as an assembly, so even if I bought one I would still have the riveting problem. Is there a source for used parts Suggestions?






Bill answers...

Hi Bob, and welcome to you and others from Virginia.

The downside of buying "house brand" DIY compressors is that they don't normally lend themselves to repair.

Check with the store and ask them who repairs their compressors under warranty, and then ask those folks.

Or, check out this page to see if any of the repair shops are close to you, and follow up with them.

Cheers,

Bill

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