30
Charge air cooler (CAC), test
pressurization
If there is suspected leakage the charge air cooler
(CAC) or the heat exchanger core must be removed
from the engine or the reverse gear and pressure tes-
ted separately. Water is use for test pressurization.
Pressurize for 1 minute. No pressure drop is permis-
sible. Test pressurize 200 kPa (2kp/cm
2
).
NOTE! Always follow the safety precautions.
3
Wash the insert in (e.g.) white spirit and blow it dry
using compressed air (or let it stand and dry). Clean
the tubes internally and the ends of the core using sui-
table brushes.
Clean the housing as well.
4
Reinstall all parts in the opposite order.
Use new sealing rings.
5
Close the drain cock and open the sea cock.
Start the engine and check for leaks.
Repair Instructions
Oil cooler reverse gear,
cleaning
NOTE! Close the sea cock and drain the water from
the seawater system.
1
Open the drain cock on the oil cooler.
Remove the cooling water pipes to and from the oil
cooler.
2
Remove both end covers and push out the insert. (The
insert can only be pulled out to the left as it has a
flange on this side.)
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