TM 5-3740-214-14
Table 5-3. Direct and General Support Maintenance Troubleshooting (Continued)
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
THE BATTERY FAILS TO CHARGE (Continued)
(1)
If the charge rate increases, the rectifier-regulator is ok. Go to Step 3.
(2)
If the charge rate does not increase, go to Step 2b.
Figure 5-67. Alternator Test
b.
Unplug the leads at the rectifier-regulator. Connect the positive (+) meter lead across the ac leads and
the negative (-) lead to a grounded engine part.
(1)
If the meter reads less than 31 volts, the stator is bad. Replace the engine. Go to Step 3.
(2)
If the meter reads more than 31 volts, remove the rectifier-regulator mounting bolts and replace
the rectifier-regulator. Go to Step 2a.
c.
Connect the positive (+) meter lead to the B+ lead, and the negative (-) meter lead to a grounded
engine part.
(1)
If the meter reads more than 14.7 volts, remove the rectifier-regulator mounting bolts and
replace the rectifier-regulator. Go to Step 2a.
(2)
If the meter reads less than 14.7 volts, go to Step 1c.
Step 3.
Check the engine speed. Use a hand-held tachometer.
a.
Start the engine according to operating instructions in Chapter 2, Section III.
NOTE
The belts should be connected to the pulleys while checking the engine speed.
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