TM 5-3895-370-14&P
Section IV. OPERATION IN UNUSUAL CONDITIONS
2-29. INTRODUCTION TO OPERATION IN UNUSUAL CONDITIONS.
The Liquid Bituminous Distributor can operate in many unusual conditions. Operator PMCS is designed to cover many of
these conditions. However, operation in extreme heat or cold can require additional checks and services. The following
paragraphs cover these conditions.
2-30. OPERATION IN EXTREME HEAT.
WARNING
When operating the bituminous distributor while it's hot outside, comply with local
operating procedures for heat stress.
CAUTION
·
Operating during periods of extreme heat [ambient temperatures above 100
degrees F (38 degrees C)] can cause the engine and hydraulic systems to
overheat. Engine temperatures above 230 degrees F (110 degrees C) and
hydraulic fluid temperatures above 200 degrees F (93 degrees C) can cause
damage to engine and hydraulic system components. Coolant and hydraulic
fluid temperatures should be checked often during periods of extreme heat to
prevent damage to system components.
·
Gaskets and seals are more likely to leak when engine and hydraulic system
operating temperatures are high. Engine and hydraulic fluid levels must be
checked more often during extreme heat conditions or damage to components
may result.
a.
Fire is an ever-present possibility when operating the distributor, especially in extremely hot weather. Refer to
Emergency Procedures (para 2-34).
b.
Check engine oil level (para 3-6) and operating temperature often for system temperature above 230 degrees F
(110 degrees C).
c.
Check hydraulic fluid level (para 3-10) and operating temperature for system temperature above 200 degrees F
(93 degrees C).
d.
Check cooling system:
(1)
Check coolant temperature gage for engine operating temperature above 230 degrees F (110 degrees C).
(2)
Check that coolant temperature is not below the minimum (para 3-8).
(3)
If conditions in steps (1) and (2) exist, set the throttle control lever to idle and allow the engine to idle for a
few minutes to cool down. When system temperatures have returned to a safe range, resume operation as
necessary.
e.
Extreme heat will cause tire pressure to increase. Notify unit maintenance to check tire pressure often.
f.
Perform Operator PMCS more often than normal.
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