TM 5-2420-230-24-2
Charge-Air Cooler (CAC) (010-027)
B3.9 and B5.9 Series Engines
Page 10-22
Section 10 - Air Intake System - Group 10
In addition to the inspection for cracks and loose fittings,
liquid soap can be applied to the charge air cooler, con-
nections, and the manifold cover sealing surfaces to find
the leaks. The leaks will create bubbles that are easier to
detect. Measurement of manifold pressure is described in
this section.
Charge-Air Cooler (CAC) (010-027)
General Information
NOTE: The long-term integrity of the charge air cooler
system is the responsibility of the vehicle and component
manufacturers; however, the following can be checked by
any Cummins Authorized Repair Location.
Clean (010-027-006)
If the engine experiences a turbocharger failure or any
other occasion where oil or debris is put into the CAC, the
CAC must be cleaned.
Remove the CAC from the vehicle. Refer to the vehicle
manufacturer's instructions.
L-1146