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Page Title:
Table 4. Electrical System Troubleshooting Procedures - Continued. |
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 TM 9-2320-312-24-1
TROUBLESHOOTING PROCEDURES - CONTINUED
0006 00
Table 4. Electrical System Troubleshooting Procedures - Continued.
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
BATTERY SYSTEM - CONTINUED
1. Batteries Fail
to
Maintain
Charge
-
c. Service
batteries
as
Continued.
required (WP 0114 00).
4. Inspect for loose or damaged
Replace batteries with damaged
battery posts.
or loose posts (WP 0114 00).
2. Batteries Require Frequent Filling.
1. Inspect battery cases for signs
Replace leaking or damaged
of leaking or damage.
batteries (WP 0114 00).
2. With engine running at 1200
rpm, monitor voltmeter. If
indicator is above green area
on gauge, refer to charging
system
(alternator)
troubleshooting.
CHARGING SYSTEM
Tighten
loose
electrical
1. Alternator Overcharging.
1. Inspect for loose electrical
connections at alternator/
connections (WP 0090 00 and
voltage
regulator
and
batteries.
Replace failed voltage regulator
2. If electrical system is still
overcharging, test voltage
regulator for 24 voltage
output.
Replace
failed
3. If electrical system is still
overcharging, notify DS
assembly (WP 0090 00).
Maintenance to test alternator
assembly.
Tighten
loose
electrical
2. Alternator Undercharging.
1. Inspect for loose electrical
connections at alternator/
connections (WP 0090 00 and
voltage
regulator
and
batteries.
2. Inspect condition and tension
Replace worn or damaged
of serpentine belt.
serpentine belt (WP 0012 00).
Replace belt tensioner (WP 0013
3. Inspect
automatic
belt
tensioner for looseness or
damage.
Replace failed voltage regulator
4. If electrical system is still
undercharging, test voltage
regulator for 24 voltage
output.
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