Try to turn the compressor by hand. It should be possible to turn it around. It should turn around smoothly, without any 'hickups' (be sure to completely shut down the air compressor!). Check the isolation of the motor windings.
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[pdf] Check out our selection of air compressor parts below! Or use our Air Compressor Parts Lookup with exploded parts diagrams. Always read the owner's manual and check the suggested maintenance schedule first. Drain moisture from tanks when storing.
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