Fuse Or Relay Blows - Peterbilt 579 Operator's Manual

WHAT TO DO IF...
3 to 5 minutes before shutting it
off. This allows the engine to cool
gradually and uniformly.
7. If overheating came from
2
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.
For further information on engine
temperature and operating engines
properly, see the Engine Operation
and Maintenance Manual and Starting
and Operating the Vehicle on page
4-5. 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. See Topping Off in Engine
Cooling System on page 5-71, for
instructions on checking and filling the
coolant expansion tank.
2-6
WARNING!
To reduce the chance of death, per-
sonal injury and/or vehicle damage
from overheated engines, which can
result in a fire, never leave the engine
idling without an alert driver present.
If the engine should overheat, as indi-
cated by the engine coolant tempera-
ture light, immediate action is required
to correct the condition. Continued
unattended operation of the engine,
even for a short time, may result in
serious engine damage or a fire.
WARNING!
Do not remove the radiator fill cap
while the engine is hot.
steam and fluid under pressure may
escape. You could be badly burned.
Failure to comply may result in death
or personal injury.
Y53-6047–2C

Fuse or Relay Blows

Fuses are located behind the drivers
side kick panel, below the ignition
switch, and accessible by a door panel.
See Power Distribution Box on page
5-83.
The vehicle main power relays are
located in the engine compartment.
See Power Distribution Center (PDC)
on page 5-80.
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,
Scalding
personal injury, equipment or property
damage.
(04/13)