freightliner Custom Classic MT45 2022, Maintenance Manual

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09–04 Charge Air Cooler
Checking
Good airflow through the radiator and charge air
cooler core is essential for proper engine cooling.
The cores allow air passage, but form a barrier that
tends to collect insects and airborne debris.
If the charge air cooler core fins are bent, use a
small pair of needle-nose pliers or a small screw-
driver to straighten them. If the fins are clogged, use
compressed air or water directed from the fan side of
the radiator core to backflush any material restricting
airflow.
Ensure that the hoses are not chafing and that the
system is closed with no air leaks.
Air Intake
09
Walk-In Van Chassis Maintenance Manual, June 2021
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