operators_manual

If the engine coolant temperature warning
lamp comes on and the audible alarm
sounds showing an overheat condition, or
if you have any other reason to suspect the
engine may be overheating, DO NOT
TURN OFF THE ENGINE unless a low
water warning device indicates a loss of
coolant. Follow these steps:
Follow these steps if the engine coolant
temperature is rising, or the temperature is
already above normal, and there are no
other warning alarms displayed in the
instrument cluster.
1. Reduce engine speed, or stop.
When stopped, place the
transmission in neutral (N) and set
the parking brake. Keep the engine
running. See the vehicle operator's
manual for instructions on
transmission shifting and parking
brake information.
WARNING!
To reduce the chance of personal in-
jury, vehicle damage and/or death
from overheated engines, which can
result in a fire, never leave the en-
gine idling without an alert driver
present. If the engine should over-
heat, as indicated by the engine
coolant temperature light, immediate
action is required to correct the con-
dition. Continued unattended opera-
tion of the engine, even for a short
time, may result in serious engine
damage or a fire. Failure to comply
may result in death, personal injury,
equipment or property damage.
WARNING!
Removing the fill cap on a hot en-
gine can cause scalding coolant to
spray out and burn you badly. If the
engine has been in operation within
the previous 30 minutes, be very
careful in removing the fill cap. Pro-
tect face, hands, and arms against
escaping fluid and steam by cover-
ing the cap with a large, thick rag.
DO NOT try to remove it until the
surge tank cools down or if you see
any steam or coolant escaping. In
any situation, remove the cap very
slowly and carefully. Be ready to
back off if any steam or coolant be-
gins to escape.
NOTE
Keep the engine running at idle
speed unless a warning icon turns
on and requires an engine to be
shut off.
CAUTION
Prolonged periods of idling after the
engine has reached operating tem-
peratures can decrease engine tem-
perature and could cause engine
damage from inadequate lubrication.
The normal torsional vibrations gen-
erated can also cause transmission
wear. An idle shutdown feature,
available on PACCAR engines, can
be programmed to shut the engine
down after a period of low idle oper-
ation with no driver activity. A flash-
ing warning lamp will inform the driv-
er of an impending shutdown. Fail-
ure to comply may result in equip-
ment or property damage.
EMERGENCY - Roadside Assistance
32 Y53-6096-1A1 (01/17)
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