Chery A series. Manual — part 133

Swash

Plate

Number of cylinders

7

Cylinder diameter (mm)

29．3

Travel (mm)

max

min

34．2

2．2

Displacement (cm³/r)

max

min

161．3

10．4

Allowable maximum instantaneous speed
(r/min)

8000

allowable maximum continuous speed
(r/min)

7000

Coolant R134a

Refrigerant oil (cm

3

) 115±15

Electromagnetic clutch mass (kg)

2．2

Rated voltage (V)

12

Rated power (W)

48

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The compressor is driven by engine crankshaft pulley via the M belt. When the shift lever
on the A/C control mechanism is shifted to the refrigeration position, the electromagnetic
clutch of A/C compressor engages, and the compressor pulley make the main shaft and
swash plate rotate and then pull the rocking plate to swing. The swinging of the rocking
plate pushes the piston to move, which creates the air pumping effect to compress the
low-temperature and low-pressure air-state coolant into the high-temperature and
high-pressure air-state coolant.

The motion parts of compressor are lubricated using the sputtered refrigerant oil and the oil
in coolant. During the operation of compressor, due to the rotation and swing of the swash
plate, the refrigerant oil will be sputtered to anywhere. In addition, due to the intersolubility
of coolant and oil, when the coolant flows into the compressor, it also carries a part of
refrigerant oil which is available to lubricate the motion parts inside the compressor.

ADJUSTMENT OF ELECTROMAGNETIC CLUTCH

1. Use a thickness gauge to measure the clearance between the platen and A/C compressor

pulley.

2. Check whether the clearance is in the range specified by the technical specification.

• If it is found that the result doesn’t conform to the requirement of technical specification,

remove the platen, and use one or several shims to adjust the clearance.

Clearance:

0.6mm±0.2mm

3. Removal/Inspection of condenser

(1). Drain off the coolant from the system (see the

coolant recycling procedure)

(2). Remove the front bumper and headlamp crossbeam

assy.

(3). Remove the fluid reservoir and the refrigeration

pipes connecting to the condenser.

Check the condenser:

(1) Check the crack, damage or oily fluid leakage.

·Replace the condenser if any failure above occurs.

(2) Check whether the fender position is blocked by dust
or not.

·Clean it if blocked.

(3) Check the bent condition of fender position.

·Use a flat headed screwdriver to straighten the fender

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position if the bent is found.

Installation of Condenser

(1) Use some self-tapping screws to secure the

condenser and radiator, and assemble the related
screw bush and spacer, with the tightening torque
of 6±0.6N·m;

(2) Use the bolts (M6) and spacer to secure the

condenser support on the front crossbeam, with the
tightening torque of 1.5±0.15N·m;

(3) Assemble the integrated condenser-radiator into the

related fixing holes;

(4) Use spacer, shim block and two nuts to fasten the

condenser and front crossbeam, where the tightening
torque of nut is 1.5±0.15N·m.

The condenser is designated to cool the coolant vapor
discharged from the compressor and condense the vapor
to make it give off its heat and become to the coolant
fluild.

Chery A15LHD adopts the serpentine condenser, as
shown in the figure. The condenser is secured with
engine radiator in a row, and there is an axial fan, which
is driven by a DC motor, behind them to forcedly cool
the condenser and radiator.

Introduction to the fluid reservoir:

Removal/Installation (see the Removal of Condenser)

Chery A15LHD’s fluid reservoir is located under the
condenser (i.e., the outlet of condenser), the structure of
which is shown in the figure.

In fact, the fluid reservoir is a pressure container used to
store the coolant, and it is available to delivery the
fluid-state coolant to the expansion valve at a specified
flow rate. The filter screen of fluid reservoir is applied to
filter the all kinds of foreign materials from the coolant.
The drying agent silicon oxide with powerful water
absorptivity is filled in the drying unit, which is used to
absorb the water content in the coolant. In addition, a
fusible plug is also installed on the reservoir. If the poor
heat emission of condenser or other causes result the
rapid rise of temperature and pressure of the

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refrigeration system, the fusible plug will metal so as to
drain off the high-temperature and high-pressure coolant
when the temperature and pressure inside the reservoir
reach the specified value, which protects the
refrigeration system.

4. Introduction to the expansion valve and pressure
switch

1) Expansion valve

Chery A15LHD adopts the traditional thermo-expansion
valve, as shown in the figure, fixed on the inlet/outlet
pipes of evaporator.
The temperature sensor inside the expansion valve
adjust the opening of ball valve in accordance with the
temperature of coolant located at the evaporator outlet,
the purpose of which is to control the flow rate of
coolant.

2) Pressure switch

Chery A15LHD’s A/C pressure switch adopts the
dual-pressure (high and low pressures) and four-wire
pressure switch which is installed on the high pressure
pipe located at the front end of expansion valve, with 50
PSI or more of low-pressure CLOSE operation and
220 PSI or more of high-pressure CLOSE operation

5. Removal/Installation and inspection of evaporator

(1) Drain off the coolant from the system (see the

coolant recycling procedure)

(2) Remove the expansion valve

(3)

Remove the instrument panel (see the
Disassembly/Assembly of Instrument Panel)

(4)

Remove the control panel trim plate, and 4
self-tapping screws used to secure the control panel
and console. (tightening torque of 1.5±0.2N·m)

(5) Remove 1 bolt (M8*25) and 4 nuts secured with the

steering crossbeam and front side respectively
(tightening torque of 3.5±0.2N·m) from the fixed
evaporator.

(6) Remove the four bolts from the evaporator.

Inspection of evaporator:

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