Posted by Dick2 on April 25, 2014 at 11:27:18 from (174.22.231.156):
In Reply to: OT---Electric motor posted by Jiles on April 25, 2014 at 11:00:57:
Most common problems are: 1) Corroded contacts on the centrifugal switch. Mark the position of the end bells to the frame on both ends (with different marks on the opposite end). then take the end bells off on the switch end. Sand the contact points and re-assemble.
2) Faulty capacitor (if motor has a capacitor). CAREFULLY remove the capacitor cover, then short a screwdriver across the terminals of the capacitor to discharge the electrical charge.
Momentarily plug in power cord (2 seconds will be sufficient), then use the screwdrive across the terminals. If there is a good spark, the capacitor is good; it there is no spark, the capacitor is dead. DO NOT touch the terminals until you have discharged the capacitor. Some people have suffered heart attacks from the jolt from a charged capacitor.
Other possible causes could be a burned/shorted starting winding, but you should have smelled that if it happened. Bad bushings could also be a cause, but you should hear a growling when it tries to start if the bearings are worn.
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