Electric drive motor – 1760

Service and repairs

5.5.5 Cleaning

To assure proper truck operation, it is important to keep the motor clean. Make sure the motor and motor compartment are free from dust, oil and other contaminants.

If the motor windings and internal compartments are dry, use a vacuum cleaner with a suitable nozzle to clean the motor. Compressed air may be used in combination with a vacuum cleaner, however, in this case, the compressed air should be clean and dry.

If there are deposits on the windings, use a lint-free rag, if necessary moistened with an organic grease solvent and a volatile cleaning agent that do not damage the windings. However, do not use too much cleaning agent as it will penetrate into the motor parts.

Cleaning agent remains must be removed, using a suitable solvent, if grease deposits are left on the surface.

If the motor components are heavily contaminated, it may be necessary to use a solvent that is sprayed onto the parts. It is especially important for the rotor that the cleaning agent is applied in a manner that avoids contaminants from penetrating into the motor section.

One method to clean the rotor is to submerge it in solvent. If the rotor is cleaned in this way, it should always be dried using warm air. While drying the rotor, make sure the work site is well ventilated. Drying should continue until several measurements of the insulation resistance have been made and the measurements are similar and result in passing results.