20
1812411-11
4. Then, rev the engine to around 2,500
– 3,000 RPM and hold this speed. Press key to continue and display
will show (See Fig.49):
5. While still holding around 2,500
– 3,000 RPM, the timer will start to countdown from 10s to 0s. As soon as it
reaches 0s, the results will automatically display as example shown below (Fig.50):
With the captured readings, analysis can be done by referring to the limits as indicated:
Normal Alternator Charging
:
12V System: No load - MAX voltage should
not exceed
15.0V
and MIN voltage should be
13.3V
.
Loaded - Should be
more than 12.6V.
24V System: No load - MAX voltage should
not exceed
30.0V
and MIN voltage should be
26.6V.
Loaded - Should be
more than 25.2V.
Smart Alternator Charging:
12V System: No load - MAX voltage should
not exceed
16.2V
and MIN voltage should be
12.4V
.
Loaded - Should be
more than 12.0V
24V System:
No load -
MAX voltage should
not exceed
33.0V
and MIN voltage should be
24.8V
.
Loaded - Should be
more than 24V
6. If either minimum or maximum charging volts are not within the voltage range limits, then it will display one of
the screens as below (Fig.51 or Fig.52) and it will highlight which prompt to check the charging system for the
fault.
OR
Fig.49
Timer starts
countdown from
10s to 0s.
Fig.50
Average Charging Voltage
Max. Volts must be less than
15.0V
Captured readings:
Maximum Volts.
Minimum Volts.
Min. Volts must be more than
13.3V
Fig.51
Fig.52
Rev engine around 2,500 to
3,000 RPM and hold this
speed.
14.6V
14.0V
9 S
14.3V
14.6V
14.0V
14.3V
15.6
V
14.0V
14.3V
14.6V
13.0
V