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TM 5-4320-305-10
Table 2-2. Preventive Maintenance Checks and Services - Continued
B - Before Operation
D - During Operation
A - After Operation
W - Weekly
INTERVAL
ITEM TO BE INSPECTED
ITEM
PROCEDURE
Equipment is Not
NO
B
D
A
W
Ready/Available If:
21
•
Pump Assembly.
Equipment dam-
age is indicated
While unit is operating, listen to the pump assembly
by continuous,
components.
excessive noise.
There is evidence
Excessive noise in the pump body may indicate
of Class III leaks.
impeller binding or misalinement. A banging noise
in the pump body may be impeller cavitation. This
is corrected by reducing engine speed, opening the
suction gate valve, or a combination of both. If
cavitation occurs, consult the performance data
plate for proper engine speed for the specific gravity
liquid being pumped.
Noise behind the flywheel guard indicates a loose or
faulty coupling.
2-35
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