CAUTION
Downline pumping assemblies can be damaged if suction pressure falls below
10 psi.
Any pumping assembly may be damaged if discharge pressure rises
above 150 psi.
Suction and discharge pressures will vary depending on operating conditions
and engine speed.
k.
l .
m.
Monitor suction pressure on PUMP SUCTION gauge (3).
Also monitor discharge
pressure on PUMP DISCHARGE gauge (1).
If suction pressure falls below 10
psi or discharge pressure rises above 150 psi, reduce engine speed to
regain proper pressure as follows:
(1) Turn ELECTRIC SPEED CONTROL (6) counterclockwise to decrease engine
speed.
Decrease engine speed until reading on PUMP SUCTION gauge (3)
or reading on PUMP DISCHARGE gauge (1) are within proper pressures.
(2) If required, reduce engine speed to idle (1,000 rpm on ENGINE
TACHOMETER/HOURMETER (10)) until problem is corrected.
If required, use ELECTRIC SPEED CONTROL (6) to control pump output by
adjusting engine speed.
Pump output is related to discharge pressure.
Observe PUMP DISCHARGE gauge (1) and use ELECTRIC SPEED CONTROL (6) to
adjust engine speed.
Turn ELECTRIC SPEED CONTROL (6) clockwise to increase
speed and discharge pressure.
Turn ELECTRIC SPEED CONTROL (6)
counterclockwise to decrease speed and discharge pressure.
Perform "During" PMCS (Table 2-10).
CAUTION
Engine can be damaged if engine operating temperature rises above 220° F
(104° C) or oil pressure falls below 10 psi (69 kPa).
Engine alarm will sound if engine operating temperature
(104° C) or oil pressure falls below 10 psi (69 kPa).
n.
If engine alarm (2) sounds:
(1)
(2)
(3)
Check ENGINE COOLANT TEMPERATURE gauge (10) and
rises above 220° F
ENGINE LUBE OIL
PRESSURE gauge (11).
If engine temperature or oil pressure is not
within proper limits, shut down engine (step o below) .
Reset engine alarm by pushing ENGINE ALARM reset button (2) .
Notify unit maintenance.
2-93
TM 10-4320-344-10
NOTE
NOTE
