OPERATION IN UNUSUAL WEATHER
EXTREMELY COLD WEATHER CONTINUED
Perform instrument panel checkout
during warmup. Refer to page 2-54.
j. Shift transmission to 1st gear and
drive vehicle slowly for 100 yards
(91.44 meters). This will warm
lubricants for normal operation.
2 If tracks are frozen to ground, chip
heavy ice free from around tracks prior
to attempting to move vehicle.
3 Watch temperature and pressure gauges
to make sure engine and transmission
are not running too hot or too cold and
that oil pressure is not abnormally high
or low. If temperature and pressure
readings are consistently abnormal, stop
vehicle and investigate cause.
4 Cover machine gun and mount to pre-
vent entrance of snow and moisture.
5 Keep all doors and cupola covers closed
and locked when not in use to prevent
entrance of snow and moisture.
Warm hydraulic oil before
operating hydraulic components
in cold weather; engage
hydraulic system for 5-10
minutes when temperature is
32°F (0°C) or below.
6 If winterization kit is installed, operate
hydraulic oil immersion heater to warm
hydraulic oil before engaging hydraulic
pump magnetic clutch.
7 Operate crane controls slowly to avoid
breaking parts which may have become
Park vehicle in a sheltered spot out of
wind. If shelter is not available, park
with left side of vehicle facing into wind
to prevent snow and sleet from entering
through exhaust ports. When vehicle is
to be parked for a long period, be sure to
park on solid ground, on planks, or on
brush to avoid having tracks freeze to
Place control levers in neutral position
when not in use to prevent them fro-m
freezing in an engaged position.
Clean vehicle of snow, ice, and mud as
soon as possible after operation. If
winterization kit is not installed, be sure
to protect all parts of engine compart-
ment against entrance of snow or sleet.
Wrap tarpaulins around rear portion of
boom. Cover and shield vehicle, but keep
ends of tarpaulins off ground to prevent
them from freezing to ground.
If vehicle is not equipped with engine
coolant heater, have unit maintenance
personnel remove batteries and store in a
If vehicle is equipped with engine coolant
heater, start heater and check that it is
operating properly immediately after
stopping engine. This heater is designed
to operate unattended during overnight
stops. Watch battery charge. Do not
operate coolant heater more than 12
hours without running engine to recharge
Refer to chapter 5 for operation
and maintenance of winteriza-
tion kit components.
In addition to normal PMCS, special care
in cleaning and lubricating must be taken
when extreme cold weather is present or
anticipated. Refer to page 3-59 for in-
structions on winterizing and cold