Chery A series. Manual — part 18

OIL PRESSURE TESTING PARAMETER LIST

Serial

No.

Subject

Rev

r/min

Pressure Kpa

(Kgf/cm

2

)

Judgment

Index

Achievement

1 Oil

Yield

Starting

Time（s）

200

Oil yield

starting

≤4

2 Oil

output（L/min） 800 196（2）

>6

Oil

output（L/min） 3000 294（3）

>28

3

Opening Pressure of

Pressure Limit Valve: Kpa

(Kgf/cm

2

)

2000

Oil yield

starting

440±20

（4.49±

0.2）

4 Seal

686（7.0）

No oil

leakage on

each faying

face

Passed

D-11

COOLING SYSTEM

DESCRIPTION OF COOLING SYSTEM

… … . . … . . … . …E-2

COMPONENTS OF 480 ENGINE COOLING SYSTEM … … . . . . E-2

WORKING PRINCIPLE OF COOLING SYSTEM … … . . … . . E-2

PARAMETERS OF COOLING SYSTEM … … . . … . . … . E-3

ENGINE COOLANT … … . . … . . … . . … . . … …E-3

COOLANT DISCHARGE … … . . … . . … . . . . …E-3

COOLING SYSTEM CLEANING … … . . … . . … . … …E-3

COOLANT FILLING … … . . … . . … . . … . . …E-4

COOLING SYSTEM CHECKUP . . . … . … . … . . …E-5

COOLING SYSTEM MAINTENANCE WARNING … … . . … . … …E-5

WARNING … … . . . . . . . . . . … . …E-5

WATER PUMP … … . . … . . … . … … … . . . . …E-6

STRUCTURE … … . . … . . … . . … . . … …E-6

DISASSEMBLY/ASSEMBLY … … . . … . . … . . … …E-6

THERMOSTAT

… … . . … . . … . . … . . … . …E-7

DISASSEMBLY/ASSEMBLY … … . . … . . … . . … …E-7

WATER TEMPERATURE SENSOR … … . . … . . … . . …E-9

DISASSEMBLY/ASSEMBLY … … . . … . . … . . … …E-9

CHECKING … … . . … . . … . . … . . … . E-9

COOLING FAN … … . . … . . … . . … . . … . E-9

DISASSEMBLY/ASSEMBLY … … . . … . . … . . … …E-9

GUIDELINE FOR DISASSEMBLY … … . . … . . … . … …E-10

EXPANSION RESERVOIR

… … . . … . . … . . … . …E-11

DISASSEMBLY/ASSEMBLY … … . . … . . … . . … …E-11

ASSEMBLY OF RADIATOR . . . … . … . … . . … . E-12

DISASSEMBLY/ASSEMBLY … … . . … . . … . . … …E-12

E-1

COOLING SYSTEM

DESCRIPTION OF COOLING SYSTEM

COMPONENTS OF 480 ENGINE COOLING SYSTEM

Engine cooling system is used to cool engine to

prevent the engine from overheating, ensuring the
normal operation of engine. It is composed of the
timing belt-driven water pump, transverse radiator,
water tank, water pipe, thermostat, temperature control
switch of electrically-driven fan and water temperature
sensor.

WORKING PRINCIPLE OF COOLING SYSTEM

When the temperature of engine coolant is

relatively low, the thermostat shall turn it off, and the
coolant shall circulate and flow among the cylinder
block, water pump and warm air exchanger. This kind
of circulation is called small circulation.

When the temperature of engine coolant is

relatively high, the thermostat shall turn it on, the
coolant shall flow into the radiator, the electrically
-driven fan shall operate to lower down the temperature
of coolant. And then the coolant shall flow back to the
engine cylinder block. This kind of circulation is called
big circulation. As the big circulation operates, the
small circulation shall also play its role.

As the engine works under normal work

temperature the engine coolant shall expand. Under this
circumstance, the overflow valve installed on the
thermostat chassis shall turn it on, the coolant shall
flow into the expansion water tank through the
overflow pipe; and as the system cools down, the
coolant shall flow back to the water pump inlet from
the expansion reservoir.

The operation of electrically-driven fan is

controlled by the thermo-switch installed on the right
water chamber of radiator. When the contact points of
thermo-switch meet together, the electrically-driven fan
shall run. The water temperature sensor is fitted on the
back of cylinder head lying at the side of exhaust pipe.

Hose Assembly

Thermo-Switch

Radiato

Hose

Hose

Hose

Hose

Water Temperature Sensor Thermostat Chassis and

Thermostat Assembly

Electrically-Driven Fan

Hose Assembly

Cooling Water Pipe Assembly

W

ate

r P

um

p I

nle

t

Engine

Pressure Cap

Expansion Tank

Warm Air/Heat Exchanger

Hose

E-2

PARAMETER OF COOLING SYSTEM

Cooling system

Parameter
Total system capacity（L） 8
Engine capacity（L） 3.3
Radiator capacity（L） 2.1

Coolant capacity

Expansion reservoir capacity（L） 0.4
Diameter: 280mm
Number of blades: 6
Operating voltage: 9-15V
Rotating speed Ι gear: high-speed engine 2000±200

low-speed engine 1800±200

Fan

Rotating speed II gear: high-speed engine 2800±200

low-speed engine 2600±200

Diameter of impeller: ф72mm
Transmission rate: 1.053:1

Water pump

Opening pressure of the pressure cap: 160kPa
Front face area: 0.202m²

Radiator

Heat abstraction area: 8.93m²
Opening temperature: 85º-89º

Thermostat

Full opening temperature: 99º-102º
Switch-on temperature gear95 Cº gear 102 Cº

Ⅰ

Ⅱ

Switch-off temperature

gear≤84 Cº gear≤91 Cº

Ⅰ

Ⅱ

Thermo-switch

Operating voltage: 12V

ENGINE COOLANT

Coolant Discharge:

――To demount the pressure cap of expansion

reservoir;

――To install a vessel under the radiator, demount

the radiator outlet hose under the radiator and
discharge the coolant.

Cooling System Cleaning:

――To discharge coolant, mount the radiator outlet

hose;

――To inject clean water up to the position of the

largest water surface of the expansion reservoir
from the expansion reservoir filler, and then close
the pressure cap;

――To start up engine to make it operate at idle speed,

E-3