TM 5-3895-373-10
SECTION IV. OPERATION UNDER UNUSUAL CONDITIONS
2.27 UNUSUAL ENVIRONMENT/WEATHER.
Due to the environmental conditions required for a
successful paving operation, most of the paving machine
hydraulic and electrical functions are not used in
unusual environment/weather conditions. Most inclimate
conditions that limit the ability to pave eliminate the
machine’s use as a paving machine. The paving
machine can be driven under unusual environment and
weather conditions with some precautions detailed in the
following paragraphs.
2.27.1 Hot Weather Operations. The paving machine is
equipped with a high temperature warning indicator light
that turns on when engine coolant temperatures reach
214°F (101°C). A high temperature shutdown sensor will
stop the engine when coolant temperature reaches
220°F (104°C). Coolant temperatures of 214°F (101°C)
to 220°F (104°C) usually correspond with an ambient air
temperature of 120°F (49°C) or greater. The paving
machine can be operated at temperatures above 120°F
(49°C) by using the following procedures.
NOTE
When the throttle control switch is
set to MAX throttle, maximum cooling
is
provided
to
the
engine
and
hydraulic machine functions. Higher
engine rpm creates faster circulation
of coolant in the engine and hydraulic
oil in the hydraulic systems.
a. Set throttle control switch (2) to MAX throttle.
b. Pull back on left and right control handles (3) to
slowest efficient paving speed.
c. Turn auger/conveyor speed control valve (4) to
slowest possible paving speed setting.
d. Turn screed vibration control valve (5) to slowest
effective vibration setting.
e. If high temperature warning indicator light comes
on, stop paving and offload paving material per
paragraph
2.28.1.
When
ambient
air
temperature drops below 120°F (49°C), resume
paving.
f. Engine oil must be changed every 50 hours
when operating the paving machine in extreme
heat
where
engine
coolant
temperatures
average 200°F (93°C) for greater than 50 hours
of
machine
operation.
Refer
to
Unit
Maintenance for oil change.
2-97
