TM 5-2420-231-23-1
0025
Table 1. Alternator Does Not Charge or Alternator Charging Indicator Fault - Continued.
025
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
Test Step 5. Test Alternator Charging
Alternator Does Not Charge
Indicator Lamp Circuit for an Open.
or Alternator Charging
Indicator Fault - Continued
1. Turn ignition switch to the off posi-
tion (TM 5-2420-231-10) and dis-
connect batteries (WP 0157).
2. Remove nut (Figure 10, Item 4)
and lockwasher (Figure 10, Item 5)
from alternator (Figure 10, Item 3).
Discard lockwasher.
3. Remove alternator D+ connector
(Figure 10, Item 2) from alternator
terminal D+ (Figure 10, Item 1) on
alternator (Figure 10, Item 3).
4. Connect batteries (WP 0157) and
turn ignition switch to the on posi-
tion (TM 5-2420-231-10).
5. Using a digital multimeter, test for
Voltage 9 to 14 Volts - Proceed to
voltage between alternator D+
step 6.
connector (Figure 10, Item 2) and
Voltage Less Than 9 Volts - Proceed
machine ground. Voltage should
to Test Step 6.
be 9 to 14 volts.
6. Connect a jumper wire between
Alternator Charging Indicator Lamp
alternator D+ connector (Figure
Illuminated - Remove jumper wire from
10, Item 2) and machine ground
alternator "D+" connector (Figure 10,
while monitoring alternator charg-
Item 2) and machine ground.
ing indicator lamp. Alternator
Replace alternator (WP 0153).
charging indicator lamp should be
Proceed to Test Step 8.
illuminated.
Alternator Charging Indicator Lamp
Not Illuminated - Replace alternator
charging indicator lamp (WP 0177).
Proceed to Test Step 8.
0025-14
