TM 5-4310-362-14
CHAPTER 9
ELECTRIC MOTOR
9-1.
CHAPTER OVERVIEW
This chapter covers maintenance of the electric motor. The electric motor consists of:
Stator and Frame Assembly
Rotor
Capacitor
Centrifugal switch
Section I. TROUBLESHOOTING PROCEDURES
9-2.
GENERAL
The electric motor is made up of electrical and mechanical components. The main mechanical components to go bad are
the bearings.
Other malfunctions are usually due to problems with the electrical components. The diagram below shows how the
electrical components are wired.
Problems with the windings, centrifugal switch or capacitor will all cause motor malfunction. If the starter windings, switch
or capacitor are bad, the motor will just sit and hum, but not start. If the running windings are bad, the motor will run at
reduced output or not at all.
9-1
