TM 5-4320-302-14
Table 4-2. Organizational Maintenance Troubleshooting - Continued
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
7. CHARGING INDICATOR LAMP LIGHTS WHEN ENGINE IS RUNNING
Step 1. See Malfunction 1, step 1.
Step 2. Check V-belts for breaks or damage. Check tension of belts. Check for damaged
or frozen pulleys. See table 4-1, item 1.
Tighten or replace V-belts as necessary (para 4-27). Replace drive shaft
V-belt pulley (para 4-29). Replace alternator V-belt pulley (para 4-28).
Replace cooling air blower (para 4-30).
Step 3. Check alternator.
Remove and test/inspect alternator (para 4-38). Replace alternator as
required.
8. PUMP MAKES EXCESSIVE NOISE
Step 1. Check volute for foreign material.
With engine stopped and suction hose removed, inspect pump volute for
any foreign material or obstruction.
Excessive pump noise can indicate that pump
is running dry or is cavitating. Either of these
conditions can cause serious pump damage.
The centrifugal pump unit should not be run
in this condition any longer than necessary to
isolate trouble.
Step 2. Check that suction hose is immersed in water being pumped or properly con-
nected to container from which water is being pumped. Water level in container
shall be above suction hose connection.
Relocate suction hose connection below surface of water. Keep suction
intake off of bottom when pumping.
Step 3. Check suction hoses, connections, or parting surface of suction flange for leaks.
Check pipe plugs are not leaking.
Step 4. Check that pump has been properly primed.
If pump has not been properly primed, prime pump (para 2-5.f).
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