Gasoline generator running vibration, how to overhaul

/ January 09, 2024

Gasoline generators have large vibrations during operation. They may be engine faults. They may also be caused by poor connection between the generator and the engine or malfunction of the generator itself. The following methods may be used for analysis and maintenance.
1. Cause of failure
(1) The difference between generator and engine
(2) generator rotor dynamic balance is not good
(3) Short circuit of generator excitation winding
(4) Generator bearing damage
(5) Engine malfunction
2. Small gas generator elimination method
(1) Check whether the connection between the generator and the engine is good. If the connection is not good, correct it to ensure that the generator and the engine axis are straight and concentric.
(2) The rotor dynamic balance is not good, generally occurs after the rotor is rewinded, and the detachable rotor can find dynamic balance
(3) Use a multimeter to test the DC resistance of each pole of the generator field winding to find the short-circuit point, repair or replace the coil
(4) Check whether the bearing cover is overheated. If yes, remove the damaged bearing and replace the new bearing.
(5) Examine the engine of the gasoline generator set and use it after troubleshooting

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