Should be in the mage-ohms (you need an isolation tester / high voltage ohm meter for this). Check the voltage when the compressor is running. If the voltage drop significantly when the compressor starts/runs, you have a bad connection somewhere. Check all relays, fuses and electrical connections.
[pdf] Firstly, check if the screw air compressor machine automatically stops working properly; Then check if the automatic switch and thermal relay are working, if they cause the cooling fan motor to stop, or if the exhaust temperature is too high or the pressure is too high, and if the motor voltage is normal.
[pdf] Disassemble the air compressor cylinder head. Refer to Procedure 012-106. Use a coupling puller, Part Number 3376663, or equivalent, to remove the spline coupling hub. Remove the front thrust bearing. Remove the three flange head capscrews. Remove the three captive washer capscrews.
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