TM 5-2420-230-24-2
B3.9 and B5.9 Series Engines
Charge-Air Cooler (CAC) (010-027)
Section 10 - Air Intake System - Group 10
Page 10-23
WARNING
When using solvents, acids, or alkaline materials for
cleaning, follow the manufacturer's recommendations
for use. Wear goggles and protective clothing to avoid
personal injury.
WARNING
Wear appropriate eye and face protection when using
compressed air. Flying debris and dirt can cause bodily
injury.
CAUTION
If internal debris can not be removed, scrap the CAC.
CAUTION
Do not use caustic cleaners to clean the CAC. Damage
to the CAC can result.
Flush the CAC internally with solvent in the opposite di-
rection of normal airflow. Shake the CAC, and lightly tap on
the end tanks with a rubber mallet to dislodge trapped
debris. Continue flushing until all debris or oil is removed.
Use a flashlight and mirror to inspect the CAC for internal
debris.
WARNING
Wear appropriate eye and face protection when using
compressed air. Flying debris and dirt can cause bodily
injury.
CAUTION
The charge air cooler (CAC) must be rinsed and dried,
and free of solvent, oil, and debris or engine damage
will result.
After the CAC has been thoroughly cleaned of all oil and
debris with solvent, wash the CAC internally with hot, soapy
water to remove the remaining solvent. Rinse thoroughly
with clean water.
Blow compressed air into the CAC in the opposite direction
of normal airflow until the CAC is dry internally.
Inspect for Reuse (010-027-007)
If the engine experiences a turbocharger failure or any
other occasion where oil or debris is put into the charge air
cooler, the charge air cooler must be cleaned.
Remove the charge air cooler from the vehicle. Refer to the
vehicle manfacturer's instructions.
L-1147
