Do . . . . . . . . .Make sure all hull
drains (3 places) are closed and
all hull covers and access plates
are securely in place. Install
power plant reservoir drain plug
in bottom of access plate, if
b. Do . . . . . . Make sure basic issue
EXTREME COLD WEATHER MAINTENANCE
a. General. In extreme cold weather,
special purpose kits (Chapter 5) should be in-
stalled and operated. Maintenance in extreme
cold is difficult in the field. Cold increases
maintenance time. At temperatures below
five times the normal amount of time. Bare
hands stick to cold metal. Fuel in contact
with hands results in super-cooling due to
evaporation and hands can become frostbit-
ten. Engine oils, except subzero grade, cannot
be poured at temperatures below -40°F
( - . 4 0 ° c ).
b. Fuel System Maintenance. When condi-
tions indicate that temperatures are going to
be below 25°F (32°C), drain, purge, and
fill fuel cell and fuel lines with arctic fuel.
Draining fuel system must be
coordinated with unit
(1) Remove fuel fill cap (1).
(2) Place suitable container under vehi-
cle. Fuel cell contains 260 gal. (984 l).
items are properly stowed and
Do . . . . . . Open hull drain valves
and drain accumulated water
after crossing is completed.
d. Do . . . . . . Check engine oil level
and crankcase for evidence of
water as soon as possible after
Regular grade fuel, DF-2 (NATO
F-54), will thicken or partially
solidify at extreme cold temper-
atures. The entire vehicle must
be placed under cover and
warmed until fuel returns to a li-
(3) Remove fuel cell drain plugs from
bottom of hull and drain fuel.
(4) When fuel cell is drained, install
drain plugs and tighten securely.
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