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