Introduction to AC Motor Maintenance

The first lesson explains the purpose of AC motor maintenance programs and the types of motor maintenance. The lesson also identifies safety procedures that should be used during motor maintenance.

Records, Tools, and Instruments

The second lesson explains the purpose of keeping complete and accurate records using various record keeping formats. The lesson also identifies tools and instruments used for given tasks in motor maintenance.

Preventive AC Motor Maintenance

The third lesson explains aspects of preventive motor maintenance, the steps in inspecting a motor for general maintenance and for identifying problems, and cleaning and lubricating a motor as part of a preventive motor maintenance program.

Measurement in Preventive AC Motor Maintenance

The fourth lesson demonstrates the need for taking measurements, and the importance of comparing measurements. Causes and effects of current variations, temperature extremes, and vibration measurements are described.

Preparing for Periodic AC Motor Maintenance

The fifth lesson identifies the characteristics of periodic motor maintenance and the major components of an AC motor. Instruction in testing winding resistance, and winding insulation resistance, as part of pre maintenance testing is given.

Motor Disassembly and Reassembly in Periodic AC Motor Maintenance

The sixth lesson teaches the procedures for proper disassembly, cleaning, inspection, and reassembly of an AC motor.

Corrective Maintenance for AC Motors

The seventh lesson discusses causes and corrective actions for various motor malfunctions.

Introduction to DC Motor Maintenance

The eighth lesson introduces participants to DC motors and compares them to AC motors.

Commutator Inspection

The ninth lesson shows participants how to identify some problems that affect the commutator.

Commutator Wear

The tenth lesson trains participants to recognize friction damage, streaking, threading, and grooving, the cause of these problems, and corrective actions.

Commutator Maintenance

The eleventh lesson demonstrates the process of preparing a commutator for reconditioning, how to properly cut mica, how to check the commutator after maintenance, and explains the purpose of performing a commutator run-in procedure.

Brush Maintenance

The final lesson describes how to select and inspect brushes and the procedures for cleaning, inspecting, and setting the height of a brush holder. How to seat brushes and adjust spring pressure is demonstrated.