operators_manual

WARNING
Removing the fill cap on a hot engine
can
cause scalding coolant to spray
out and burn you badly. If the engine
has been in operation within the previ-
ous 30 minutes, be very careful in re-
moving the fill cap. Protect face,
hands, and arms against escaping flu-
id and steam by covering the cap with
a large, thick rag. DO NOT try to re-
move it until the surge tank cools down
or if you see any steam or coolant es-
caping. Always remove the cap very
slowly and carefully. Be ready to back
off if any steam or coolant begins to
escape. Failure to comply may result
in death, personal injury, equipment or
property damage.
NOTE
Keep the engine running at idle speed
unless
a warning icon turns on that re-
quires the engine to be shut off.
2. Check to ensure the Oil Pressure
Gauge reads normal.
3. Make sure the engine fan is turning
by switching the Engine Fan
Switch from AUT
O to MAN
(Manual).
4. Idle the engine to see if this
reduces the coolant temperature. If
the temperature does not begin to
drop, shut off the engine and
contact your nearest authorized
dealer.
5. If the temperature begins to return
to normal, allow the engine to idle 3
to 5 minutes before shutting it off.
This allows the engine to cool
gradually and uniformly.
6. If overheating came from severe
operating conditions, the
temperature should have cooled by
this time. If it has not, stop the
engine and let it cool before
checking to see if the coolant is
low.
7. Be sure the vehicle is parked on
level ground or the readings may
be incorrect. Check the coolant
level at the coolant surge tank.
Check the coolant level after each trip
when the engine has cooled. The coolant
level should be visible within the surge
tank. Add coolant if necessary.
How to Inspect and
Replace a Fuse
T
urn the ignition off and turn all lights off.
Locate the fuses in either the cab, sleeper,
or main power fuse box.
All the electrical circuits have fuses to
protect them from a short circuit or
overload. If something electrical on your
chassis stops working, the first thing you
should check for is a blown fuse.
WARNING
DO NOT replace a fuse with a fuse of
a higher rating. Doing so may damage
the electrical system and cause a fire.
Failure to comply may result in death,
personal injury, equipment or property
damage.
CAUTION
Never patch fuses with aluminum foil
or
wire. This may cause serious dam-
age elsewhere in the electrical circuit,
and it may cause a fire.
EMERGENCY - How to Inspect and Replace a Fuse
44 Y53-6110-1A1 (01/21)
2