IC Bus CE Series 2020, Operation And Maintenance Manual

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Maintenance
Chassis-Mounted Charge Air Cooler and Radiator Core
Inspection and Cleaning
With the engine OFF, visually inspect the charge air cooler core
and radiator core assembly for debris and clogging of external
fins. Prior to engine operation, remove any debris blocking the
core.
Cooling System
WARNING
To prevent personal injury and / or death, or
damage to property, do the following when
removing radiator or deaeration cap:
• Allow engine to cool for 15 minutes or more.
• Wrap a thick cloth around radiator cap or
deaeration cap.
• Loosen cap slowly a quarter to half turn
counterclockwise to vent pressure.
• Continue to turn cap counterclockwise to
remove.
WARNING
To prevent personal injury and / or death, or
damage to property, do not exceed the pressure
rating on the deaeration tank cap. Ensure that
the pressure rating of the deaeration tank cap
matches that listed on the side of the tank, or the
tank may burst.
CAUTION
To prevent vehicle and / or engine component
damage, observe the following.
If the coolant
should get extremely low and the engine very
hot, let the engine cool for approximately 15
minutes before adding coolant; then, with the
engine running, slowly add coolant. Adding cold
coolant to a hot engine may crack the cylinder
head or cylinder block. Never use water alone.
Ensure that coolant level is maintained between the COLD MIN
and COLD MAX lines on the deaeration tank when engine is
cold.
Gravity-Fill Coolant Method
Filling Instructions
NOTE: If system has been drained, fill with fresh 50/50
diluted concentrate coolant or 50/50 premixed coolant.
If the system has been flushed with water, a significant
amount of the freshwater flush will remain in the system. In
this case, refilling with a mixture with a higher percentage
(75%) of coolant concentrate is advised in order to achieve
a final mixture close to 50/50.
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