Chery A15. Manual — part 19

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,

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preheat up to normal operating temperature, shut
down and cool down;

――To discharge coolant;

――To repeat the above-mentioned steps until the

discharged water is the same as the clean water;

――To clean the cooling system according to the

following methods if the coolant is not correctly
used and replaced to meet the requirements in the
former utilization:

a. To discharge coolant;
b. To demount the radiator inlet hose, insert the main

water hose into the radiator filler until the outlet
water becomes clean;

c. In order to flush out the engine, you should connect

the main water hose with the water outlet of the
thermostat to clean the engine until the discharged
water flowing from the water pump inlet becomes
clean;

d.

To repeat cleaning operations if the radiator is very

dirty, and connect the main water hose with the
radiator water outlet until the water flowing from
the radiator water outlet becomes clean.

Coolant Filling:
――To check whether the pipeline is well connected

and fastened before injecting coolant;

――To open the pressure cap; fill up coolant into the

expansion reservoir filler slowly. Since the
expansion reservoir is at the highest position in the
cooling system. Therefore, as the coolant level
rises, the air in the system shall be discharged into
the expansion reservoir and shall be discharged out
of the expansion reservoir by injecting coolant
slowly.

――To continuously inject coolant up to the highest

coolant level. And then close the filler to prevent
coolant from spilling.

――To start up the engine to make it operate at idle

speed and preheat up to normal operating
temperature. And until the fan begins to run,
observe water thermometer and check if the engine
is at overheating condition. If the coolant level in

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the expansion reservoir descends quickly, coolant
should be injected up to the highest position to cut
down the air circulation in the system.

――To shut the engine down to have it fully cooled（if

possible, leave the engine alone for one night.）;

――To open the pressure cap to check the coolant level, and

inject coolant up to the highest position.

Cooling System Checkup:
――To check the coolant level, start up the engine and

preheat it. Put the engine under idle speed
circumstance until the cooling fan runs, and check
if coolant leakage exists at various pipe joints. Shut
down the engine and wait for engine cooling. And
then check if the coolant level in the expansion
reservoir is at normal condition.

――To try best to prevent the coolant spilling from

scalding operator during checkup.

――To timely check if water flows into the engine oil

pan (the lubricating oil shall become milk white
after water flows) when no pipe leakage is found
and the expansion reservoir is short of coolant, and
timely stop water from flowing in when finding it.

COOLING SYSTEM MAINTENANCE WARNING

Warning:

·To try best not to move radiator cap or loose the radiator discharging plug when the engine

is under operation or the engine and radiator are at a very high temperature. Scorching
coolant may spill out, hurting the people and damaging the engine and cooling system.

·To shut down the engine until it cools down, and then carefully demount the radiator cap.

Meanwhile, wrap a large thick cloth onto the radiator cap, rotate it slowly to the position
of the first clip along the counter-clockwise direction and then release the pressure slowly.

·To use a cloth to push down the radiator cap, rotate and remove the radiator cap after the

operator ensures all the intensity of pressure has been released.

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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.

Gasket

Tightening Torque

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