Engine Iveco C10/C13/C78/Cursor 13/Cursor 78. Manual — part 119
Figure 12
Dropping oil
Pressure oil
ENGINE F3B LUBRICATION DIAGRAM
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DETAIL A
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SECTION 1 - GENERAL SPECIFICATIONS
COOLING
Description
The engine cooling system is of the closed-circuit, forced circulation type.
It consists mainly of the following components:
- expansion tank,
- a heat exchanger to cool down lubrication oil;
- a water pump with centrifugal system incorporated in the cylinder block;
- fan;
- a 2-way thermostat controlling the coolant circulation.
Operation
The water pump is actuated by the crankshaft through a poli-V belt and sends coolant to the cylinder block, especially to the cylinder
head (bigger quantity). When the coolant temperature reaches and overcomes the operating temperature, the thermostat is
opened and from here the coolant flows into the radiator and is cooled down by the fan.
Figure 13
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Water flowing out of the thermostat
Water circulating in the engine
Water flowing into the pump
F2B ENGINE COOLING SYSTEM DIAGRAM
SECTION 1 - GENERAL SPECIFICATIONS
13
Figure 14
F3B ENGINE COOLING SYSTEM DIAGRAM
Water flowing out of the thermostat
Water circulating in the engine
Water flowing into the pump
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SECTION 1 - GENERAL SPECIFICATIONS
Figure 15
FUEL FEED
Fuel feed is obtained by means of a pump, fuel filter and
pre-filter, 6 pump-injectors controlled by the camshaft by
means of rockers and by the electronic control unit.
Return circuit
Delivery circuit
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F2B ENGINE FEED SCHEME
1. Pump injectors - 2. Pressure control valve (start of opening at 5 bar) - 3. Feed pump - 4. Fuel pre-filter with
priming pump - 4. Valve, to recirculate fuel from injectors, integrated in feed pump (start of opening at 3.5 bar) -
5. Overpressure valve to return fuel to tank (start of opening at 0.2 bar) - 6. Fitting - 7. Central unit - 8. Heat exchanger -
9. Fuel filter - 10. Fuel sedimentation pre-filter with priming pump.
A. Fuel arriving at injectors - B. Fuel returning to tank - C. Fuel entering from injectors into feed pump
SECTION 1 - GENERAL SPECIFICATIONS
15
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