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TM 10-4320-307-10
Table 2-2. Operator/Crew Preventive Maintenance Checks and Services (Cont)
Item
Location
Not Fully
No.
Interval
Item to
Procedure
Mission Capable
Check/Service
if:
35
During
Pump
While unit is operating, listen to the
Equipment dam-
Assembly
pump assembly components.
age is indicated
by continuous,
Excessive noise in the pump body
excessive noise
may indicate impeller binding or
There is
misalignment. A banging noise in the
evidence
pump body may be impeller cavitation.
Category
This is corrected by reducing engine
Class III leaks.
speed; check that the suction gate
valve is fully open. If cavitation
occurs, consult the performance data
plate for proper engine speed for the
specific gravity liquid being pumped.
Excessive vibration may be caused
by flexible coupling misalignment.
Inspect all pumping assembly fittings
and flanges for leakage.
2-33
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