Check oil pressure indicator for normal reading.
Check engine speed (normal reading is 3200 RPM, but this can be adjusted, within the limits of the
performance curve, to suit condition. To adjust engine speed, refer to 2M 5-2805-259-14 for adjustment of the
If the suction line has been properly installed, with adequate submergence at the suction end, the pump
initially primed, the engine operating at sufficient speed (high speed is best for priming period), and 25' or less
suction lift, the unit will begin pumping in 1 to 3 minutes.
Move the run-stop switch to the stop position.
Allow the unit to cool and perform daily preventative maintenance.
CAUTION: Reduce engine speed to 700 or 80O0 rpm with governor speed control to prevent back firing.
Section IV - OPERATION UNDER ADVERSE OR ABNORMAL CONDITIONS
2-13. OPERATION IN EXTREM HEAT
A. Lubricatetrailer in accordance with lubrication chart (para. 3-2). Refer to TM 5-2805-259-14 for
B. Fuel system - Do not overfill fuel tank and allow room for fuel expansion. Make sure fuel tank cap is
tight and the cap vent open.
OPERATION IN EXTREME COLD
A. When possible proxide shelter.
B. Lubricate trailer in accordance with lubrication chart (para. 3-2). Refer to TM 5-2805-259-14' for
C. Fuel system - Keep the fuel tank full at all times to prevent condensation. Remove all ice crystals
from the fuel tank strainer immediately before filling the fuel tank. Service the fuel filter frequently.
D. After starting, allow the engine to warm up by manually adjusting governor control to approximately
E. Electrical system - Do not disturb electrical leads or wiring in extreme cold unless repair is
WARNING: When pumping unit is to be shut down for extended periods at tempera-temperatures below freezing (320 F),
the pump casing, suction and discharge lines shall be completely drained.
OPERATION IN DUSTY OR SANDY AREAS
A. Keep the unit covered when not in use. Take advantage of natural barriers, or provide shelter when
possible. Refer to IM 5-2805-259-14 for engine lubrication and to para. 3-2 for lubrication of trailer. Clean all
lubrication points before applying lubricants. Wipe spilled lubricants from the unit to avoid collecting dust and
sand. Clean area around the oil fill cap before checking or adding lubricants.
B. Fuel system - Use care when adding fuel, to prevent dust or sand from entering the fuel system.
Keep fuel cap tight al all times. Service the air cleaner and fuel filter daily (refer to 12M 5-2805-259-14). Wipe
the unit frequently to prevent accumulation of dust and sand.
C. Instrument system - Check for loose or broken lenses which might permit entry of dust or sand.
OPERATION IN RAINY OR HUMID AREA
A. When possible, erect a suitable shelter or cover when not in use. During dry periods, remove cover
to allow unit to dry out.
B. Refer to TM 5-2805-259-14 for engine lubrication and to para. 3-2 for lubrication of-'trailer. .Keep
oil fill cap tight to prevent moisture from entering the crankcase. Keep rain from entering the system during