MOTO GUZZI NEVADA Service Station Manual page 79

NEVADA - NEVADA ANNIVERSARIO
•
Take the measurement; The correct value is determined by subtracting the wire resistance
of the tester obtained by touching the two pins.
Example:
•
Resistance of stage 1 read on the display = 0.67 Ohm
•
Resistance of the wires read on the display = 0.47 Ohm
•
Effective resistance stage 1 = 0.67-0.47 = 0.20 Ohm
Winding stage
Stage 1
Empty voltage
•
Disconnect the three-way connector (1);
•
For a correct detection of the alternator voltage, a measurement must be carried out using
alternatively the 3 engine side connector pins: stage "1" (pin 1-2), stage "2" (pin 1-3), stage
"3" (pin 2-3).
•
Take the measurements;
•
If there is a significant difference between one stage and another (other than 15 V), this
means that the alternator is defective and must be replaced.
CAUTION
WITH THE ENGINE HOT THE VALUES RECORDED ARE ON AVERAGE 4-5 V LESS THAN THOSE
DETECTED WITH THE ENGINE COLD.
R
ESISTANCE MEASURE
Ambient temperature (ohm)
0.18 - 0.23
Electrical system
Afterwards heat stabilisation (ohm)
0.20 - 0.25
ELE SYS - 79