TM 9-2320-360-10
The CHECK ENGINE light may come on during cold starts in
extremely cold environments. Typically, the light will come on 8
minutes after staring and go out 2-3 minutes later. If the light
says on longer than 15 minutes after starting, refer to
troubleshooting.
a. Principles of
operating in
cold environment (para 2-25) apply to
extreme cold environment
b. Operate arctic kit for approximately 25
minutes to
warm up
engine (para 2-20).
c. Idle engine rater than shutting it down during short stops.
d. Deleted.
2-27. OPERATION IN FOREST OR UNEVEN TERRAIN
WARNING
Avoid driving diagonally across a hill. HET Tractor may roll causing
injury or death to personnel and damage to equipment.
CAUTION
Ensure HET Tractor can clear ground obstructions, such as
stumps and large rocks, before driving over. Stumps and rocks
can damage component underneath HET Tractor.
Ensure HET Tractor can clear overhanging tree limbs and other
obstructions. Low overhead obstructions can damage top of
HET Tractor.
a. Avoid driving over ground obstruction when possible.
b. Avoid driving under low overhead obstructions when possible.
c. Steer HET Tractor straight up and down hills when possible. When necessary to drive across a
hill, choose lowest angle possible. Keep HET Tractor moving. Avoid quick, sharp turns. Left fuel shutoff
valve should be closed while driving across hill when left side of truck is higher than right.
d. Check tire traction and braking. Rocks and fallen leaves can be very slippery, espec ially when
wet.
e. Ensure tire and spare wheel are in good condition when driving over rocky terrain. Tire punctures
are more likely to occur when operating on rocky terrain.
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