Chery QQ6 (S21) / S12LHD. Manual — part 97
4. When installing cylinder cushion, install it with
the side with word up.
Note:
The cylinder cushion has been applied with
sealant, so, providing that the cylinder head or cylinder
block has been disassembled, be sure to replace the
cylinder cushion.
5. When installing piston ring, remember to leave
the side of the second ring with word up.
6. The opening position of the piston ring during
installation is as shown in the figure.
7. The label on piston head prompts direction and
position of installation.
8. Use a special tool to install the piston ring.
9. When installing connecting rod bearing shell, pay
attention to installation mark.
First ring
Second ring
Oil ring
First ring
Second ring
Front Liner ring
Rear
Lower blade
Upper blade
10. Method for shell matching.
The tightening torque for installing the fixing bolt of
connecting rod bearing is 25±3Nm (then turn 90±5°
clockwise).
Note:
The machining technique for connecting
rod and connecting rod shell cap adopts Instantly
Swell and Break machining method, so, each
machined surface maintains the shape of original
material. When installing, keep any sundries out
of this machined surface. In addition, only the
two machined surface of the same connecting rod
can completely engage.
11. Use the piston installation special tool to install
the piston.
12. Tighten the fixing bolt of connecting
rod bearing cap.
Tightening torque:
First time: 25±3Nm. Second time: turn
90±5 °.
13. Install the main bearing cap and then
follow the order as shown in the figure to
tighten the bolt.
Tightening torque:
First time: 45±5Nm.
Second time: turn 180±10°.
14. Tighten the fixing bolt of main
bearing cap and cylinder block.
Torque: 20+3 Nm.
Service Manual for Chery
QQ6
(UMC EFI for 473F Engine)
After Sales Service Department of Chery
Automobile Sales Co., Ltd.
CONTENTS
CHAPTER ONE DISASSEMBLY AND INSTALLATION OF ELECTRONIC FUEL
INJECTION SYSTEM. . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...4
I. Disassembly and Installation of Components of Electronic Fuel Injection System . . . . ..4
CHAPTER TWO PRINCIPLE OF ELECTRONIC FUEL INJECTION SYSTEM . . . . ...6
I. Overhaul of System Components . . . . . . . . . . . . . . . . . . . . . . . ..6
1. Intake Air Temperature Pressure Sensor . . . . . . . . . . . . . . . . . . ...6
2. Tachogenerator of Engine . . . . . . . . . . . . . . . . . . . . . . . . .8
3. Phase Sensor . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...10
4. Water Temperature Sensor . . . . . . . . . . . . . . . . . . . . . . . ..10
5. Knock Sensor . . . . . . . . . . . . . . . . . . . . . . . . . . . . ..12
6. Electric Throttle Body. . . . . . . . . . . . . . . . . . . . . . . . . .12
7. Oxygen Sensor . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
8. Fuel Pump Assembly . . . . . . . . . . . . . . . . . . . . . . . . . ..16
9. Injector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
10. Ignition Coil . . . . . . . . . . . . . . . . . . . . . . . . . . . . ..19
11. Spark Plug . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .21
12. Carbon Canister Solenoid Valve Control . . . . . . . . . . . . . . . . . ..22
13. Electronic Accelerator Pedal. . . . . . . . . . . . . . . . . . . . . . .24
14. Three-way Catalytic Converter . . . . . . . . . . . . . . . . . . . . . .24
15. Fan Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...25
16. Position Sensor of Double Brake Pedal . . . . . . . . . . . . . . . . . . 26
17. Clutch Position Sensor . . . . . . . . . . . . . . . . . . . . . . . . ..26
18. A/C Control. . . . . . . . . . . . . . . . . . . . . . . . . . . . ...27
CHAPTER TWO FUNDAMENTAL PRINCIPLE FOR FAILURE DIAGNOSIS OF
ELECTRONIC FUEL INJECTION SYSTEM . . . . . . . . . . . . . . . . . . . .28
1. Failure Information Records . . . . . . . . . . . . . . . . . . . . . . . . ...28
2. Failure State . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
3. Failure Types . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ..28
4. Failure Frequency Counter . . . . . . . . . . . . . . . . . . . . . . . . . .28
5. Limp Home . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .29
6. Failure Alert. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
7. Readout of Failure . . . . . . . . . . . . . . . . . . . . . . . . . . . . ..29
8. Clearing Failure Information Records . . . . . . . . . . . . . . . . . . . . . 30
9. Failure Locating. . . . . . . . . . . . . . . . . . . . . . . . . . . . . ..30
10. Failure Code Table. . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
11. The Steps for Implementation of Failure Diagnosis According to Failure Information
Records . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...35
11.1 Electronic Throttle Failure . . . . . . . . . . . . . . . . . . . . . . ..35
11.2 Knock Sensor failure. . . . . . . . . . . . . . . . . . . . . . . . ...36
11.3 Air Pressure Sensor Failure . . . . . . . . . . . . . . . . . . . . . . 37
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