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
3. Set dial of clampmeter (Figure 8,
Alternator Does Not Charge
Item 3) on the 400 DC amp scale
or Alternator Charging
(Figure 8, Item 4).
Indicator Fault - Continued
4. Turn off all cab accessories and
cab lights (TM 5-2420-231-10).
5. Start and run engine at 1,500 rpm
for approximately 2 minutes.
6. The clampmeter value should first
Clampmeter Value Increases and
Then Gradually Decreases - Proceed
increase to more than 40 amps,
and then gradually decrease at a
to step 7.
steady rate to less than 20 amps.
Clampmeter Value Does Not
Increase - Proceed to Test Step 6.
Clampmeter Value Fluctuates -
Replace alternator (WP 0153).
Proceed to Test Step 8.
7. Remove clampmeter (Figure 8,
Item 2) from alternator cable
(Figure 8, Item 1).
Figure 8. Clampmeter.
0025
