2005 SSANGYONG RODIUS engine

07-8
RODIUS 2005.07
2110-01
ENGINE COOLING SYSTEM
5) 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.
6) ELECTRIC COOLING FAN
Keep hands, tools, and clothing away from the engine cooling fans to help prevent
personal injury. This fan is electric and can turn on even when the engine is not running. -
f a fan blade is bent or damaged in any way, no attempt should be made to repair or reuse
the damaged part.
A bent or damaged fan assembly should always be replaced with a new one to prevent
possible injury. -
The cooling fans are mounted behind the radiator in the engine compartment. The electric
cooling fans increase the flow of air across the radiator fins and across the condenser on ai
r
conditioned (A/C)-equipped vehicles.
This helps to speed cooling when the vehicle is at idle or moving at low speeds.
All models have two fans. The main fan is 320 mm (12.6 inches) in diameter with seven blades
to aid the airflow through the radiator and the condenser. An electric motor attached to the
radiator support drives the fan. The auxiliary fan is 320 mm (12.6 inches) in diameter.
7) A/C OFF OR NON-AC MODEL
The cooling fans are actuated by the engine control module (ECM) using a low-speed
cooling fan relay, a high-speed cooling fan relay and a cooling fan motor relay.
The ECM will turn the cooling fans on at low speed when the coolant temperature reaches
95°C (203°F) and at high speed when the coolant temperature reaches 105°C (221°F).
The ECM will change the cooling fans from high peed to low speed at 100°C (212°F)
and will turn the cooling fans off at 90°C (194°F). ·
·
·

07-9
ENGINE COOLING SYSTEM
RODIUS 2005.07
2110-01
8) A/C ON
The ECM will turn the cooling fans on at low speed when the A/C system is on. The ECM
will change to high speed when the high side A/C pressure reaches 1860 kPa (269.8 psi).
The cooling fans will return to low speed when the high side A/C pressure reaches 1378 kPa
(199.8 psi). ·
·
9) ENGINE COOLANT TEMPERATURE SENSOR
The Engine Coolant Temperature (ECT) sensor uses a temperature to control the signal
voltage to the Engine Control Module (ECM).
10) COOLANT TEMPERATURE GAUGE
The coolant temperature gauge controls the instrument panel temperature indicator. The
coolant temperature gauge is located with ECT sensor.

04-3
ENGINE INTAKE SYSTEM
RODIUS 2005.07
1715-01
0000ENGINE INTAKE
1. FASTENER TIGHTENING SPECIFICATIONS

04-4
RODIUS 2005.07
1715-01
ENGINE INTAKE SYSTEM
1. AIR CLEANER AND INTAKE AIR DUCT
▶ Specifications

04-5
ENGINE INTAKE SYSTEM
RODIUS 2005.07
1715-01
2. RESONANCE FLAP
1) Function
A pneumatically actuated resonance flap (5)
is located on the intake manifold, and will be
opened and closed by load, which operates
resonance flap according to engine and
controlled by ECU and rpm.
Resonance flap closed (at idle/partial
load: less than 3,800 rpm)
The switch valve (7) will be adjusted by
ECU and resonance falp will be colosed.
By increasing air flow passage through
dividing intaking air flow toward both ai
r
collection housing (8).
This leads to a signficant increase in the
torque in the lower speed range. ▶
Resonance flap open (at full load:
over 3,800 rpm)
The switch valve (7) will not be adjusted
by ECU and resonance falp (5) will be
open. The collected air in the ai
r
collection housing (8) will not be divided
and intaking air passage will be shorten. ▶

05-3
ENGINE EXHAUST SYSTEM
RODIUS 2005.07
2411-01
0000ENGINE EXHAUST
1. FASTENER TIGHTENING SPECIFICATIONS

05-4
RODIUS 2005.07
2411-01
ENGINE EXHAUST SYSTEM
1. EXHAUST SYSTEM
When you are inspecting or replacing exhaust system components, make sure there is
adequate clearance from all points on the underbody to avoid possible overheating of the
floor panel and possible damage to the passenger compartment insulation and trim
materials. -
Check the complete exhaust system and the nearby body areas and trunk lid for broken,
damaged, missing or mispositioned parts, open seams, holes, loose connections, or othe
r
deterioration which could permit exhaust fumes to seep into the trunk may be an indication of a
problem in one of these areas. Any defects should be corrected immediately.
2. MUFFLER
Aside from the exhaust manifold connection, the exhaust system uses a flange and seal joint
design rather than a slip joint coupling design with clamp and U-bolts. If hole, open seams, o
r
any deterioration is discovered upon inspection of the front muffler and pipe assembly, the
complete assembly should be replace, the complete assembly should be replaced. The same
procedure is applicable to the rear muffler assembly.
Heat shields for the front and rear muffler assembly and catalytic converter protect the vehicle
and the environment from the high temperatures that the exhaust system develops.
3. CATALYTIC CONVERTER
When jacking or lifting the vehicle from the body side rails, be certain that the lift pads do
not contact the catalytic converter, as this could damage the catalytic converter. -
Use of anything other than unleaded fuel will damage the catalyst in the catalytic converter. -
The catalytic converter are emission-control devices added to the exhaust system to reduce
pollutants from the exhaust pipes.
The oxidation catalyst is coated with a catalytic material containing platinum and palladium,
which reduces levels of hydrocarbon (HC) and carbon monoxide (CO) from the exhaust gas.
The three-way catalyst has coatings which contain platinum and rhodium, which additionally
lower the levels of oxides of nitrogen (NOx).

05-5
ENGINE EXHAUST SYSTEM
RODIUS 2005.07
2411-01
4. CATALYTIC CONVERTE STRUCTURE
The Catalytic converter of monolith type
consists of 2 walled metal bodies which is
made of Cordierite.
The principal element of converter consists
of the materials like Alumina or oxidized
Serume in order to apply to Ceramic
Monolith.
Washer coat operates first, and catalytic
metal elements (Pt, Pd, Rh) operates to
washer coat next.
Monolith type is lighter than other types,
easy to manufacture and quickly approaches
to proper temperature.
Washer coat is used to make a contact
surface with exhaust gas bigger by adhering
closely to small holes of inner layer.
If a lead compound or phosphorus adheres
to the surface and the temperature rises, its
surface is decreased.
The total area of general monolith converte
r
is about 45,000 ~ 500,000 ft3. (10 times of a
football field)
Generally Alumina (AL2 O3) is used as a
raw material and its 7 phases of gamma,
delta, theta have big areas and high stability
for the temperature, and nowadays gamma
Alumina is used usually.