Troubleshooting & repair, Charging circuit test (continued) – Lincoln Electric COMMANDER SVM153-A User Manual
Page 104
TROUBLESHOOTING & REPAIR
F-51
F-51
COMMANDER 500
#239
#281
#238
FIGURE F.24 – ENGINE ALTERNATOR LOCATION
CHARGING CIRCUIT TEST (CONTINUED)
TEST PROCEDURE
1. Turn engine off.
2. Using the 3/8" wrench, remove the left rear
case cover.
3. Locate the engine alternator. See Figure
F.24.
4. Start the engine and run it at high idle (1900
RPM).
5. Set the voltmeter for DC volts and measure
the DC volts at lead #239 to engine ground.
See the Wiring Diagram. Normal is 13.2 to
14.5VDC.
6. Set the voltmeter for DC volts and measure
the DC volts at lead #238 to engine ground.
See the Wiring Diagram. Normal is 13.2 to
14.5VDC.
7. Set the voltmeter for DC volts and measure
the DC volts at lead #281 to engine
ground. See the Wiring Diagram. Normal
is 13.2 to 14.5 VDC.
NOTE: Lead #281 carries the flashing voltage
for the engine alternator. Battery voltage should
be present whenever the engine is running.
See the Wiring Diagram.
8. If the correct flashing voltage is present
and the charging output voltage is low or
missing, the engine alternator may be
faulty.
9. Stop the engine and check the alternator V-
belt for proper tension. See the engine
operation manual.
10. Replace the left rear case cover.