TM 9-2350-238-10
OPERATION ON UNUSUAL TERRAIN
Excessive speed under mud,
snow, or ice conditions can
cause personnel injury or
damage to equipment.
MUD
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Drive with transmission in a low range.
Keep vehicle moving steadily to avoid
digging in.
If vehicle becomes stuck, do not dig fur-
ther in by attempting to drive out. Con-
nect winch wire rope to a solid object
and use winch to assist driving out or ar-
range to be towed out.
If freezing temperatures are expected, be
sure to park vehicle on solid ground to
avoid having tracks freeze in mud.
Remove mud from track and wheel con-
tacting surfaces.
SNOW
1 Drive with transmission in a low range.
2 Avoid grades and sharp turns when
possible.
3 Drive as straight up or down grades as
possible to equalize track load.
4 It may be possible for vehicle to ride
heavily crusted snow with only occa-
sional breakthrough. To climb back onto
crust, reduce engine speed and shift into
low range to achieve a very low track
speed for forward movement without
slippage.
5 Check air filter pats frequently and clean
pats of snow. When air filter baskets are
removed, inspect air separators for clog-
ging. If clogged, notify unit maintenance
personnel.
ICE
1 Select a higher gear range which will
move vehicle steadily without imposing
undue strain on engine.
2 Drive slowly and cautiously to avoid
skidding. If vehicle skids, slow down
engine and proceed with caution. Do not
spin tracks.
3 Avoid grades and sharp turns, if
possible.
SAND
1 The main objective when driving in sand
is to avoid spinning tracks.
2 Drive slowly and use a gear high enough
to move vehicle steadily without impos-
ing undue strain on engine.
3 Avoid sharp and pivot turns to prevent
buildup of debris in track that would
cause track to be thrown.
FORDING
Do not ford water that exceeds
42 inches (106.7 cm) in depth.
Check for soft mud or sandy
bottoms.
The M578 recovery vehicle is designed to
cross a body of water only up to 42 inches
(106.7 cm) deep.
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