Chery A15. Manual — part 50

SAFETY PRECAUTIONS OF SYSTEM MAINTENANCE

SAFETY PRECAUTIONS IN DIAGNISIS AND MAINTENANCE OF THE
GASOLINE INJECTION ELECTRONIC CONTROL SYSTEM

(1) Removal/installation requirements of controller

The battery negative grid must be disconnected first, followed by the removal of
controller prior to carrying out electric welding or baking finish;

In removing/installing the controller, the ignition switch must be turned to “OFF”
position to avoid being damaged;

The power supply wire should not be removed from the battery while the engine is
running or the electrical system is in operation;

Don’t start the engine with high current of charger;

Pay attention to keep the ambient temperature around controller less than 80 .

℃

(2) Cleanliness requirements: following rules shall be complied strictly before

operating the fuel supply system and fuel injector system:

All the dismantled parts must be placed in clean environment and covered properly. It
is not allowed to use the fiber-sloughing cloth.

(3) All the wiring harness and the same for diagnostic tester can only be disconnected

or connected after the ignition switch has been turned off;

Ensure the wiring connection is correct before carrying out the voltage or grounding
measurement for the electronic control system.

Remove the power supply wire from battery or disconnect the wiring harness
controller connectors will cause the loss of diagnostic information and memory.

(4) Notes for maintaining the fuel supply system:

Attention must be paid to the followings when removing and installing the fuel pump
on a fully or semi-fully filled fuel tank:

A device that can fully absorb the potential leaked fuel should be available near the
fuel tank opening before carrying out the operation;

Avoid the skin come into direct contact with fuel;

Thoroughly clean the place and around it before loosening the connecting parts;

Put rags around the connecting parts in order to prevent the fuel from spraying via the
loosened part;

The disassembled parts that are not intended to be repaired immediately should be
covered or closed carefully;

G-88

The spare parts should be taken out from its packing only before the assembly. Any
part without proper packing is not allowed to be used;

Pay attention not to damage the O ring while assembling the fuel injector. A small
amount of lubricating oil should be applied on the O ring for assembly convenient.

After the system has been opened up, as far as possible not to use compression air and
move the car around.

SAFETY MEASURES

Attention should be paid to the followings so as to avoid the injury of personnel and
damage of the fuel injectors and the ignition device:

(1) If the engine is running or at the start up speed, then it is not allowed to contact or

disconnect the ignition wiring harness;

(2) If the engine is driven by the starting motor instead of starting by itself, such as in

the case of inspecting the compression pressure, then the wiring harness
connectors should be disconnected from the Hall Sensor and crankshaft position
sensor.

G-89

CLUTCH

CLUTCH INTRODUCTION… … … … … … … … … … … … … … … … … … H-2

CLUTCH STRUCTURE … … . . . … … … … … … … … … …H-2

OPERATING PRINCIPLE OF CLUTCH … … … … … … … … … … … …H-2

CLUTCH CABLE ASSEMBLY STRUCTURE … … … … … … … … … …H-3

ASSEMBLY AND ADJUSTMENT OF CLUTCH CABLE … … … … … … … …H-4

CLUTCH DISASSEMBLY . … … … … … … … … … … … … … … … …H-5

CLUTCH OVERHAUL . . … … … … … … … … … … … … … … … …H-6

CLUTCH INSTALLATION… … … … … … … … … … … … … … … … … …H-7

TROUBLE DIAGNOSIS. . … … … … … … … … … … … … … … … …H-8

H-1

CLUTCH INTRODUCTION

CLUTCH STRUCTURE

·As picture below, the clutch is dry diaphragm with single leaf. It consists of clutch driven

disk (2), release disk (4), intermediate disk (6), pressure plate (7) and flywheel (1).

·There are diaphragm springs in the pressure plate (7), which are fixed in the crankshaft by

intermediate disk (6) and bolt (5). Driven disk (2) is pressed on the flywheel (1) by
pressure plate (7), and bolt (8) is used to fix pressure plate (7) and flywheel (1) together;
the clutch pusher (9) is used to push separator disk (4) and then the separator disk (4) to
push the small end of diaphragm springs on pressure plate (7).

1.Flywheel 2.Driven Disk 3.Snap Ring 4.Release Disk 5.Bolt（M10）(110±5N.m)

6.Intermediate Disk 7.Pressure Plate 8.Bolt (23~25N.m) 9.Clutch Pusher

OPERATING PRINCIPLE OF CLUTCH

·As picture below, Picture a presents the connection status of clutch. When clutch pedal is

not treaded, the driven disk (3) is pressed on flywheel (2) by diaphragm spring (1). Driven
disk (3) and flywheel (2) are revolving synchronously, and the torque is transmitted to the
transmission-axle (6) by Separator disk (5) through driven disk (3).

·Picture b presents the disconnection state of clutch. When the clutch is treaded, pusher (4)

pushes separator disk (5) which presses the small end of diaphragm spring (1) to move the
big end of diaphragm spring (1) away from driven disk (3), so the pressure is disengaged
between driven disk (3) and flywheel (2) and the clearance is generated to cut off the
motive power of engine and pass the transmission.

H-2