Paccar MX-13 Operator's Manual - page 19
WHAT TO DO IF...
Check Engine Lamp Turns
On
Check Engine Lamp - Turns
on when a problem exists, but
the vehicle can still be safely
driven. Vehicle should be
serviced to correct the problem
but the situation should not be
considered an emergency.
Engine is Overheating
CAUTION
The cooling system may overheat if
the engine coolant is at the minimum
level.
A sudden loss of coolant,
caused by a split hose or broken
hose clamp could also lead to an
overheat condition. Always inspect
to ensure hoses and clamps are not
cracked, worn, or loose. Failure to
comply may result in equipment or
property damage.
NOTE
The system may also temporarily
overheat during severe operating
conditions such as:
•
Climbing a hill on a hot day.
•
Stopping after high-speed/high-
load driving.
•
Debris blocking air flow through
the cooling module (radiator).
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:
•
Reduce engine speed or stop.
When stopped, place the
transmission in neutral and set the
parking brake. See the vehicle
operator's manual for instructions
on transmission shifting and
parking brake information.
•
Check to ensure that the oil
pressure gauge reads normal.
•
Increase the engine speed to
1,100 to 1,200 rpm maximum for
2-3 minutes.
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