ENGINE ELECTRICALS
Rotor Coil Continuity Test
Use an circuit tester to test the rotor coil continuity.
1. Touch both circuit tester probes to the rotor coil slip
rings.
2. Note the circuit tester reading.
The circuit tester should register approximately 9
ohms.
3. If the circuit tester does not show continuity, check
the connections between the lead wire and the slip
rings.
If breaks are founded, repair and repeat the rotor
coil continuity test.
If there is still no rotor coil continuity, the rotor must
be replaced.
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Rotor Coil Ground Test
Use an circuit tester to test the rotor coil for grounding.
1. Touch one of the circuit tester probes to the rotor
shaft.
2. Touch the other circuit tester probe to one of slip
rings.
3. Note the circuit tester reading.
4. Touch the circuit tester probe to the other slip ring.
5. Note the circuit tester reading.
The circuit tester should show infinity (no needle
movement) at both measuring points.
If the circuit tester does not show infinity (the needle
moves) at both measuring points, the rotor is
grounded and must be replaced.
STATOR COIL
Stator Coil Continuity Test
Use an circuit tester to test the stator coil continuity.
1. Touch the circuit tester probes to two of the bare
stator wires.
2. Note the circuit tester reading.
3. Move one of the circuit tester probes to a third wire.
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