Chery QQ6 (S21) / S12LHD. Manual — part 83

Service Manual for Chery

QQ6

(SQR473F Engine-Mechanical)

After Sales Service Department of Chery

Automobile Sales Co., Ltd

CONTENTS

Chapter One Introduction of Characteristics . . . . . . . . . 4

I. Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ... 4

II. Number Position of the Engine . . . . . . . . . . . . . . . . . . . . . . . 4

III. Connotation of Engine Number . . . . . . . . . . . . . . . . . . . . . . .. 4

Chapter Two Specification . . . . . . . . . . . . . . . ... 6

I. Engine Type and Major Parameters. . . . . . . . . . . . . . . . . . . . . ... 6

II. Major Maintenance Parameters of Engine . . . . . . . . . . . . . . . . . . ... 7

III. Primary Fit Clearance . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

IV. Engine Primary Tightening Torque Table . . . . . . . . . . . . . . . . . . . 10

V. The Parts where Lubrication are Required during Assembly of Engine. . . . . . . . 13

VI. The Parts where Rubber Coating are Required during Assembly of Engine . . . . . 15

Chapter Three Special Tools . . . . . . . . . . . . . . .. 16

I. Connotation of Special Tool Number . . . . . . . . . . . . . . . . . . . . .. 16

II. Special Tools Chart . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

Chapter Four Measurement of Cylinder Pressure. . . . . . ... 20

I. Detection of Cylinder Pressure. . . . . . . . . . . . . . . . . . . . . . . 20

1. Measuring process . . . . . . . . . . . . . . . . . . . . . . . . . .. 20

2. Judgment of cylinder pressure value. . . . . . . . . . . . . . . . . . ... 21

Chapter Five Disassembly of Power-assisted Steering System. ... 22

I. Disassembly Procedure. . . . . . . . . . . . . . . . . . . . . . . . . . 22

II. Overhaul. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

III. Installation of the Steering Pump . . . . . . . . . . . . . . . . . . . . . .. 23

Chapter Six Disassembly of A/C Compressor . . . . . . . . 24

II. Overhaul of Compressor . . . . . . . . . . . . . . . . . . . . . . . . . 25

III. Installation procedure. . . . . . . . . . . . . . . . . . . . . . . . . . 25

Chapter Seven Disassembly of Generator . . . . . . . . . .. 25

I. Disassembly Procedure. . . . . . . . . . . . . . . . . . . . . . . . . . 25

II. Overhaul of Generator. . . . . . . . . . . . . . . . . . . . . . . . . . 26

III. Installation Procedure . . . . . . . . . . . . . . . . . . . . . . . . . ... 26

Chapter Eight Replacement of Engine Timing Belt. . . . . . 27

I. Disassembly Procedure. . . . . . . . . . . . . . . . . . . . . . . . . . 27

II. Installation of Timing Belt . . . . . . . . . . . . . . . . . . . . . . . . . 29

III. Adjustment of Timing (general overhaul) . . . . . . . . . . . . . . . . . . . 30

IV. Adjustment of Timing (minor overhaul) . . . . . . . . . . . . . . . . . . ... 30

Chapter Nine Disassembly of Engine Assembly . . . . . . . 31

I. Disassembly Procedure. . . . . . . . . . . . . . . . . . . . . . . . . . 31

II. Installation Procedure. . . . . . . . . . . . . . . . . . . . . . . . . . . 39

Chapter Ten Disassembly of Intake Manifold . . . . . . . . 39

I. Disassembly Procedure. . . . . . . . . . . . . . . . . . . . . . . . . . 39

Chapter Eleven Disassembly of Cylinder Head. . . . . . . .. 40

I. Disassembly Procedure. . . . . . . . . . . . . . . . . . . . . . . . . . 40

II. Overhaul of Cylinder Head System. . . . . . . . . . . . . . . . . . . . . 43

III. Assembly of Cylinder Head Assembly . . . . . . . . . . . . . . . . . . . . 45

Chapter Twelve Disassembly and Installation of Oil Pump and

Lubrication System . . . . . . . . . . . . . . . . . . 48

I. Disassembly Procedure. . . . . . . . . . . . . . . . . . . . . . . . . . 48

II. Overhaul of Oil Pump . . . . . . . . . . . . . . . . . . . . . . . . . . 50

III. Installation Procedure . . . . . . . . . . . . . . . . . . . . . . . . . ... 50

Chapter

Thirteen

Disassembly

of

Crank-Connecting

Rod

Mechanism. . . . . . . . . . . . . . . . . . . . . . 51

I. Disassembly Procedure. . . . . . . . . . . . . . . . . . . . . . . . . . 51

II. Overhaul of Crank-Connecting Rod System. . . . . . . . . . . . . . . . . .. 52

III. Installation of Crank-Connecting Rod System . . . . . . . . . . . . . . . . . 56

Chapter One Introduction of Characteristics

I. Overview

SQR473F engine is one of the ACTECO series engines that are jointly designed and developed by

Chery company and AVL-a world famous engine design company. This engine adopts such

advanced technologies as overhead double camshaft structure, 4 air valves, electronic throttle

body and electronic accelerator pedal etc. In terms of such mandatory standard indexes as

emission and noise, this engine is outdoes national standard and has reached overseas advanced

stage.

II. Number Position of the Engine

Number of the engine locates at right side of oil filter

where bearing shell cover and cylinder block join.

III. Connotation of Engine Number

Each engine has a unique number, from which you can know some characteristics and information

of the engine. Engine model should conform to requirements in GB725 and is consisted of

enterprise code, number of cylinders of the engine, bore, characteristic code and specification

code.

A complete engine model is as follows:

□□□ ○ ○○ □ □

Among which, ○ indicates an Arabic numeral while □ indicates a letter.

The enterprise code is stipulated as SQR;

Number of cylinders of engine is a 1-2 digit integer;

Characteristic code

Cylinder bore

Specification code

Number of cylinders

Enterprise code