TM 5-3810-288-12
c. Engine Warm-up. Start the engine and bring
Warning: Do not operate unit on longitudinal
it to a fast idle (approx. 1,500 rpm) until normal operating
slopes exceeding 30 per cent.
temperature is reached, and the oil pressure gauge
Caution: Do not shift the transfer case while the
shows operating readings.
carrier is in motion.
e. Release the clutch pedal to engage the
(1) In cold weather, ,warm-up time can be reduced
clutch, while depressing the accelerator to increase the
by keeping the engine radiator covered.
engine output, and drive off.
(2) Watch the engine oil pressure gauge closely. If
d. To shift the main transmission to the next
the gauge does not indicate oil pressure within 15
higher gear, depress the clutch pedal, place the main
seconds after starting the engine, stop the engine and
transmission lever in the position indicated on the gear
report this condition to organizational maintenance.
shift position nameplate, and release the clutch pedal.
To shift into the main transmission high range, lift the
61 2. Stopping the Engine
transmission shift button.
Refer to figure 6-3 and stop the engine.
g. To retard the motion of the carrier, remove
61 3. Operating the Carrier
pressure from the accelerator pedal. To bring the carrier
a. Start the engine (para 6-11).
to a stop, depress the brake treadle valve.
b. Place the transfer case lever in the neutral
h. To hold the carrier brakes applied for short-
position. and release the clutch pedal.
term parking, bring the carrier to a stop, and place the
c. Place the EMERGENC(Y-RELEASE-PARK
brake three-way control lever in the EMERGENCY
lever in the EMIERGENCY position, and operate the
position.
engine at a fast idle (approx. 1,500 rpm) until the low air
i. To hold the carrier brakes applied for long-
pressure warning flag retracts. (d. Depress the clutch
term parking, bring the carrier to a stop, and place the
pedal, and place the transfer case lever in the proper
brake three-way control lever in the PARK position.
position (low or high range) as indicated on the gearshift
nameplate. Make certain that the transmission shift
button is depressed for operation in the low range.
Section V. OPERATION UNDER UNUSUAL CONDITIONS
e. Fuel System. Keep the fuel tank as full as
possible at all times to minimize condensation. If the
6-14. Operation in Extreme Cold (Below 0o F)
presence of water is noted in the fuel supply, drain the
a. General Operation in extreme cold presents
tank and refill it with clean fuel.
special problems due to the increased possibility of
condensation, and consequent freezing, and the
g. Warm-up.
increased difficulty of keeping parts lubricated
adequately.
(1) Cover part of the air passages through the
radiator, to aid warm-up and to maintain engine running
Warning: Personnel should use care to keep from
temperature. During warm-up only, the entire radiator
spilling fuel, coolant, or other liquids upon
may be covered.
themselves. Exposed parts of the body should not
(2) Place the transfer case shift lever in the neutral
come into contact with metal during cold weather, as
position, select a gear on the main transmission, and
serious and painful injury may result.
release the clutch pedal to turn over and warm-up the
b. Lubrication. See instructions in paragraph
main transmission.
c. Cooling System. See instructions in para-
graph 2-26c.
h. Stopping. The park abort feature must be
d. Batteries. See instructions in para 2-26b.
used in extremely cold weather to prevent the brakes
from freezing up. Refer to paragraph 6-8.
6-8
