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;