The following graphic shows the connection of the auxiliary radiator to the cooling sys-
tem. The auxiliary radiator is connected to the radiator by means of parallel coolant lines,
thus increasing the cooling surface area. This system is combined with an oil-to-coolant
heat exchanger mounted on the oil filter housing. (See component “C” in the previous
graphic.)
N55, auxiliary radiator
Note: If a separate oil to air cooler is not installed, an auxiliary radiator in
conjuction with an oil to coolant heat exchanger is used to cool the
engine oil.
78
N55 Engine
Index Explanation
1
Radiator
2
Auxiliary Radiator
3
Feed connection to the auxiliary radiator
4
Feed connection at the auxiliary radiator
5
Return connection to the auxiliary radiator
6
Return connection from the auxiliary radiator
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