Three excavator generator daily maintenance methods

Three excavator generator daily maintenance methods

2. Check if the rotor and stator of the generator are in contact.

Check if the engine rotor and stator are in contact

If the rotor collides with the stator or rubs, it will cause the rotor and the stator to heat up, which makes the current and voltage of the generator unstable. In severe cases, the generator may be damaged or the electronic components on the excavator may be damaged. If the rotor collides with or rubs against the stator, it is generally worn or deformed by the generator bearing, the generator end cap or the generator casing.

3. Check if the generator bearing is short of oil or the lubricating oil is dirty.

If the bearing of the generator is short of oil or poorly lubricated, the rolling resistance of the bearing will be too large, and the outer ring and the inner ring of the bearing will rotate synchronously, which leads to excessive wear between the bearing and the bearing housing. Excessive wear of the bearing can cause the rotor of the generator to rub against the stator, causing the generator to overheat and the voltage and current of the generator to be unstable.

4. Check the length of the carbon brush. If the length of the carbon brush is less than 5 mm, it should be replaced in time.

The carbon brush on the generator plays a very important role. The current is generated by the carbon brush, the slip ring and the excitation coil, and the generator generates electricity by cutting the magnetic field through the coil. If there is a problem with the carbon brush, then the generator will not generate a magnetic field. Without a magnetic field, there is no way to generate electricity. In addition, if a brushless generator is used, then the length of the carbon brush can be ignored.