TM 55-2210-223-12
TO 45A2-2-14-41
Table 4-2. UNIT TROUBLESHOOTING
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
AUXILIARY ELECTRICAL SYSTEM
1.
FAILURE OF BATTERY CHARGING CIRCUIT
WARNING
o Remove rings, bracelets, wristwatches, and neck
chains before working around the locomotive.
Jewelry can catch on equipment and cause
injury, or may short across an electrical circuit
and cause severe burns or electrical shock.
o Be careful not to short out battery terminals. Do
not smoke or use open flame near batteries.
Batteries may explode from a spark. Battery acid
is harmful to skin and eyes.
Step 1.
Check to see if batt6ries are fully charged.
Recharge or replace battery, if not fully charged (para 4-30).
Step 2.
Check to see if battery terminals are dirty or loose.
Clean and tighten terminals.
Step 3.
Check to see if exciter-auxiliary generator belts are loose.
Adjust belts (para 4-36).
Step 4.
Use fuse tester in electrical equipment cabinet and check to see if
battery field fuse is blown.
Replace fuse.
Step 5.
Use fuse tester in electrical equipment cabinet and check to see if
auxiliary generator fuse is blown.
Replace fuse.
Step 6.
Check to see if exciter-auxiliary generator brushes are worn beyond
7/8 inch (22.2 mm).
Replace brushes if brushes are worn beyond 7/8 inch (22.2 mm) in
length (para 4-37).
4-11
