Engines Iveco C10,C13, Cursor 10, Cursor 13. Instruction - page 8

COOLING

Description

The engine cooling system is of the closed-circuit, forced circulation type.
It consists mainly of the following components:

- expansion tank, not supplied;

- a heat exchanger to cool down lubrication oil;

- a water pump with centrifugal system incorporated in the cylinder block;

- fan, not supplied;

- 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.
The pressure inside the system, due to temperature change, is adequately controlled through the expansion vessel.

23

CURSOR ENGINES F3A

SECTION 1 - GENERAL SPECIFICATIONS

Base - May 2007

Figure 33

104238

Water flowing out of the thermostat

Water circulating in the engine

Water flowing into the pump

24

SECTION 1 - GENERAL SPECIFICATIONS

CURSOR ENGINES F3A

Base - May 2007

104239

Figure 34

Figure 35

Figure 36

Thermostat

The water pump consists of: rotor, shaft with bearing,
T-gasket and drive pulley with dust shield.

Check that the pump body has no cracks or water
leakage; if it does, replace the entire water pump.

CROSS-SECTION OF THE WATER PUMP

View of thermostat operation

60747

Water circulating in the engine

TO THE

EXPANSION

TUB

FROM

THE ENGINE

TO THE
BY PASS

Water leaving the thermostat

60748

TO THE

RADIATOR

TO THE

EXPANSION

TUB

TO THE
BY PASS

FROM

THE ENGINE

Check the thermostat works properly; replace it if in doubt.

Temperature of start of travel 84

°C ±2°C.

Minimum travel 15 mm at 94

°C ±2°C.

TO THE

RADIATOR

Water pump

25

CURSOR ENGINES F3A

SECTION 1 - GENERAL SPECIFICATIONS

Base - May 2007

Figure 37

TURBOCHARGING

The turbocharging system consists of:

- air filter;

- Wastegate turbocharger.

104240

1. TURBOCHARGER HX55

Exhaust gas

Inlet air

Compressed air (hot)

Intake compressed air

26

SECTION 1 - GENERAL SPECIFICATIONS

CURSOR ENGINES F3A

Base - May 2007

Рассказать друзьям