Chery A15 / 480 LHD model. Instruction - page 77

WATER PUMP

Structure:

1—Water pump housing

2—Water pump impeller

3—Water pump gear

4—Water pump shaft bearing

5—Water pump seal (ceramics-lead)


Disassembly:

——To disconnect the negative terminal of battery;

——To discharge engine coolant (refer to the coolant

discharge process);

——To disconnect poly V-belt and power pump belt;

——To demount timing shield;

——To unscrew and take 4 bolts out of the front side of

cylinder block.

——To demount the water pump assembly;

——To demount the water pump gasket.


Assembly:

——To install the new gasket on the water pump;

——To install the water pump assembly in the cylinder

block and screw up 4 fixing bolts by hand, and
then screw up to 7.0—10.0Nm;

——The water pump impeller installed in the cylinder

block should be able to rotate freely;

——To refill engine coolant;

——To check leakage occurrences of engine coolant.

Note: Because water pump assembly can not be
repaired, it should be replaced when seal ring or bearing
is worn and torn.


Tightening Torque

Gasket

THERMOSTAT

Disassembly:

——To unscrew 3 M6×40 bolts and then demount the

bolts;

——To demount thermostat chassis and thermostat

assembly.


——To pry out the spring clamps by using chisel or

screwdriver.


——To take the thermostat out;

——To clean up the thermostat;

——To take the seal ring out, and replace it if it being

worn and torn.

——To demount the gasket from the thermostat chassis.

(To replace with new gasket if it is worn and
torn, and allow no repeated use.)


——To measure the thermostat opening temperature

under hot water.


Assembly:

——To clamp the thermostat and then put the gasket

into the thermostat aperture.

——To install thermostat (the side with spring facing

outward).

——To embed spring clamp to ensure the clip within

the thermostat chassis slot;

——To mount new gasket onto thermostat chassis;

——To mount the thermostat chassis and thermostat

assembly into the aperture at the rear side of engine
cylinder head, and screw up the bolt by hand to
9—12N.m.


WATER TEMPERATURE SENSOR

Disassembly:
——To demount water temperature sensor (at the

exhaust pipe flank and under the lifting eye).

Assembly:
——To apply Letai 243 glue on the screw thread,

screw up the bolt to 7.0—10.0Nm before
installation.


Checking:

Water temperature sensor is a negative temperature coefficient sensor, which is composed of

a thermal resistor. The resistance value of the resistor shall decrease as the engine temperature
rises. The variation is detailed in the following table:

Temperature (°C)

Resistance Value (Ω)

-20

29,125

-10

16,660

0

9,790

+20

3,748

+25

3,000

+60

747

+80

377

+100

204

+120

117

COOLING FAN

Disassembly:

——To disconnect the negative terminal of battery;

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