SsangYong Stavic / SsangYong Rodius (2005 year). Manual - part 119

DI06-3

CHANGED BY

EFFECTIVE DATE

AFFECTED VIN

COOLING SYSTEM

DI ENG SM - 2004.9

ENGINE COOLING SYSTEM

• Cylinder block side

Block #5 

→ Oil cooler → Heater → Heater water pump inlet pipe → Water pump

• Cylinder head side

Cylinder head 

→ Coolant outlet port (intake #1) → Radiator → Water pump

<PTC Engine Coolant Flows>

<FFH Engine Coolant Flows>

Radiator

Coolant

reservoir

Thermostat

Water pump

Engine

Cylinder head

Cylinder block

Oil cooler

Heater

Radiator

Coolant

reservoir

Thermostat

Water pump

Engine

Cylinder head

Cylinder block

Oil cooler

Heater

EGR cooler

(henceforth)

(Heater line)

DI06-4

CHANGED BY

EFFECTIVE DATE

AFFECTED VIN

COOLING SYSTEM

DI ENG SM - 2004.9

6

4

1

2

3

5

Function Description

• Cylinder head coolant outlet port is integrated into intake manifold. (in front of cylinder #1)

: Improved shape and gasket material to prevent coolant from leaking

• In OM 600 engine, coolant inflows through the heater line rear section (cylinder #4 and #5) of cylinder head. However,

in D27DT engine, coolant inflows from cylinder block through oil cooler (refer to  coolant flows layout in previous
page).

: It prevents cooling efficiency from decreasing due to coolant separation between cylinder #4 and #5.

• In OM 600 engine, the cooling fan is installed with water pump, however, in case of D27DT engine, it is connected to

water pump with an additional pulley.

Cylinder Head

Intake Manifold

Coolant Outlet Port

From cylinder head

From reservoir

From heater

DI06-5

CHANGED BY

EFFECTIVE DATE

AFFECTED VIN

COOLING SYSTEM

DI ENG SM - 2004.9

Radiator

This vehicle has a lightweight tube-and-fin aluminum radiator.
Be careful not to damage the radiator core when servicing.

Water pump

The belt-driven centrifugal water pump consists of an impeller,
a drive shaft, and a belt pulley. The impeller is supported by a
completely sealed bearing.

The water pump is serviced as an assembly and, therefore,
cannot be disassembled.

Coolant reservoir

The coolant reservoir is a transparent plastic reservoir, similar
to the windshield washer reservoir. The coolant reservoir is
connected to the radiator by a hose and to the engine cooling
system by another hose. As the vehicle is driven, the engine
coolant heats and expands. The portion of the engine coolant
displaced by this expansion flows from the radiator and the
engine into the coolant reservoir. The air trapped in the radia-
tor and the engine is degassed into the coolant reservoir.

When the engine stops, the engine coolant cools and
contracts. The displaced engine coolant is then drawn back
into the radiator and the engine. This keeps the radiator filled
with the coolant to the desired level at all times and increases
the cooling efficiency. Maintain the coolant level between the
MIN and MAX marks on the coolant reservoir when the sys-
tem is cold.

Notice

Scalding hot coolant and steam could be blown out under
pressure, which could cause serious injury. Never remove
the coolant reservoir cap when the engine and radiator
are hot.

DI06-6

CHANGED BY

EFFECTIVE DATE

AFFECTED VIN

COOLING SYSTEM

DI ENG SM - 2004.9

Thermostat

A wax pellet-type thermostat controls the flow of the engine
coolant through the engine cooling system. The thermostat is
mounted in the water pump housing. The thermostat stops
the flow of the engine coolant from the engine to the radiator
to provide faster warm-up, and to regulate the coolant
temperature. The thermostat remains closed while the engine
coolant is cold, preventing circulation of the engine coolant
through the radiator. At this point, the engine coolant is al-
lowed to circulate only throughout the heater core to warm it
quickly and evenly. As the engine warms, the thermostat
opens. This allows the engine coolant to flow through the ra-
diator where the heat is dissipated. This opening and closing
of the thermostat permits enough engine coolant to enter the
radiator to keep the engine within proper engine temperature
operating limits. The wax pellet in the thermostat is hermeti-
cally sealed in a metal case. The wax element of the thermo-
stat expands when it is heated and contracts when it is cooled.
As the vehicle is driven and the engine warms, the engine
coolant temperature increases. When the engine coolant
reaches a specified temperature, the wax pellet element in
the thermostat expands and exerts pressure against the metal
case, forcing the valve open. This allows the engine coolant to
flow through the engine cooling system and cool the engine.
As the wax pellet cools, the contraction allows a spring to
close the valve.

The thermostat begins to open at 85°C and is fully open at
100°C. The thermostat closes at 85°C.

Thermostat

Operating

Temperature (°C)

Opening Value (mm)

Begins to open

Fully open

0.1 mm

8 mm

85°C

100°C