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Cooling system
The cooling concept is based on longitudinal flow through cylin-
ders 1 to 5. The coolant pump is driven by the auxiliary drive by
means of a poly-vee belt and is designed to control the high ther-
mal load on the turbo engine.
451_007
To prevent the turbocharger from overheating when the engine
stops, the cooling system is equipped with a coolant run-on pump
V51. When required, it is activated by the engine control unit (map)
via the auxiliary coolant pump relay J496.
Legend:
A Breather pipe
BExpansion tank
C Heater heat exchanger
DVent screw
E Exhaust turbocharger
F Coolant pump
GCoolant thermostat
H Engine oil cooler
I Coolant temperature sender G62
JNon-return valve
K Coolant run-on pump V51
L Coolant circuit solenoid valve N492
M Auxiliary cooler
NCooler
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