PART 8: MAINTENANCE AND SERVICE
Engine Cooling System
03019
Surge Tank
Proper Coolant Level
NOTE: Do not over
fi
ll a cooling system. Excess
coolant may result in over
fl
ow, loss of antifreeze,
and reduced corrosion protection.
• The proper coolant level for a cold engine is at the base
of the
fi
ller neck extension tube.
• The proper coolant level for an engine at normal oper-
ating temperature is even with the pressure cap seal.
Re
fi
lling Your Radiator
1. Be sure the radiator and engine block drains are
closed.
2. Move the heater control to maximum heat position.
3. Remove the surge tank pressure cap
4. Through the surge tank,
fi
ll the system with premixed
coolant. Pour it in a steady
fl
ow until the radiator is full.
5. Start the engine.
6. Idle at low RPM.
7. Complete the
fi
lling. Do it as quickly as possible.
8. Idle the engine until it reaches normal operating tem-
perature.
9. Fill the radiator as necessary to raise the coolant level
to the proper reading. Replace the surge tank pres-
sure cap.
Check the coolant level after each trip when the engine
has cooled. Add coolant as necessary. You may
fi
nd
your coolant level is not up to the correct level soon after
you have
fi
lled the radiator. This may be because all the
trapped air in the system has not yet been purged. It takes
a little time for all the air to leave the system after you
fi
ll
your radiator.
R(08/07)
Y53-6015
– 169 –
Summary of Contents for Peterbilt 320
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Page 210: ...PART 11 SUBJECT INDEX Windshield Washer Reservoir 29 206 Y53 6015 R 08 07 ...
Page 212: ...Peterbilt Motors Company P O Box 90208 Denton Texas 76202 ...