Volvo Penta TAMD162C, Instruction Book

Page: 58 / 84

56
Cleaning the charge air cooler (CAC)
Close the sea cock and drain the water from
the seawater system.
1. Remove the end cover and pipes to the heat
exchanger and seawater pump.
2. Connect a hosepipe to the charge air cooler insert
drain cock on the charge air cooler rear end.
3. Flush the charge air cooler insert pipes through at
high pressure. Clean pipes at the same time using
a suitable brush.
If there is reason to believe the charge air cooler is
clogged the cover must be removed and the insert
lifted out. This work requires special procedures
and must be carried out at an authorized work-
shop.
4. Check the end cover gasket and the O rings at the
pipe connections. Replace if required. Reinstall the
end cover and pipes to the heat exchanger and
seawater pump.
5. Open the sea cock. Fill with water in the centrifugal
seawater pump. See “Before starting the engine”,
point 8, page 18.
6. Start the engine and check for leakage in the
seawater system.
Cleaning the heat exchanger
Close the sea cock and drain the water from
the seawater and freshwater systems before
working on the cooling system.
1. Remove the pipe connections from the heat
exchanger end section on the starboard side.
2. Remove both ends of the heat exchanger.
3. Clean the heat exchanger insert core using a
brush and then flush the core through with water.
4. Reinstall the heat exchanger’s end covers.
5. Reinstall the pipe connections to the starboard end
cover. Check the gaskets and replace if required.
6. Open the sea cock. Fill with water in the centrifugal
seawater pump. See “Before starting the engine”,
point 8, page 18.
7. Start the engine and check for leakage in the
seawater system.
Oil cooler, reverse gear
Cleaning oil cooler, reverse gear
Close sea cock before working on cooling
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.
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 suitable brushes. Clean the housing too.
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.