Chery A15. Manual — part 18

——To remove the thing plastic strip.

OIL FILTER AND OIL PRESSURE SENSOR

Disassembly:

——To demount the oil filter by rotating the filter

counterclockwise.

——To remove the oil pressure sensor.

Assembly:

——To spread engine lubrication oil onto the oil filter

gasket and screw it up to the fitting to 12-17N.m.,
or screw the oil filter manually and screw more
3/4-1 round when the rudder gasket reaches the
cylinder.

——To spread Letai 243 seal glue onto the oil

pressure sensor screw threads and screw it to the
cylinder main oil passage to 25-29N.m.

Oil pressure sensor screw threads are 1/4″-18NPTF.

The supply voltage of oil pressure sensor is 6-24V.

The alarm triggering pressure is 30±15Kpa.

8.0-25.0N.M Fastening Torque Of 8.0-25.0N.M

Oil Pressure Sensor

Oil Filter

D-10

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