4 Maintenance
Cleaning the after cooler
1
If the performance of the engine decreases this can be caused by a dirty heat exchanger in the after cooler. The heat exchanger must then be cleaned.
2
Caution The heat exchanger element in the after cooler is very vulnerable!
2 1 VD01202
VD00703
55 Take out heat exchanger • Stop the engine, close the sea cock and drain the system.
• Loosen the hose clamps for the raw water (IN and OUT) and take the hoses (2) off the hose connection points. • Drain the coolant system and remove the hoses from the expansion tank. • Remove the expansion tank (1).
78
• Loosen the bolts (3) and remove the covers at the top and bottom of the after cooler. Be careful with the red silicone gaskets • Take the heat exchanger out of the after cooler housing. Prevent damage from occurring to the fins and the O-ring.
