A5维修手册SQR484F发动机机械部分.docx

A5维修手册SQR484F发动机机械部分.docx

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A5维修手册SQR484F发动机机械部分

奇瑞A5维修手册

（SQR484F发动机机械部分）

奇瑞汽车销售有限公司售后服务部

目录

第一章、发动机参数及专用工具....................................................5

第一节、技术数据................................................................................................................................................5一、发动机特征参数....................................................................................................................................5二、维修技术参数........................................................................................................................................6第二节、专用工具................................................................................................................................................8第三节、发动机号码..........................................................................................................................................11一、发动机号码位置..................................................................................................................................11二、发动机号码涵义..................................................................................................................................11

第二章、发动机本体部分维修......................................................14

第一节、发动机正时校对..................................................................................................................................14第二节、轮系......................................................................................................................................................17一、结构图..................................................................................................................................................17二、维修指导..............................................................................................................................................171、正时皮带上、下罩盖更换............................................................................................................17

1.1、所需工具和辅料.................................................................................................................17

1.2、拆卸步骤.............................................................................................................................17

1.3、检查.....................................................................................................................................19

1.4、安装步骤.............................................................................................................................192、正时皮带更换................................................................................................................................19

2.1、所需工具和辅料.................................................................................................................19

2.2、拆卸步骤.............................................................................................................................19

2.3、检查.....................................................................................................................................19

2.4、安装步骤.............................................................................................................................203、惰轮、涨紧器、接触带轮更换.....................................................................................................20

3.1、所需工具和辅料.................................................................................................................20

3.2、拆卸步骤.............................................................................................................................20

3.3、检查.....................................................................................................................................21

3.4、安装步骤.............................................................................................................................21第三节、缸盖部分..............................................................................................................................................22一、结构图..................................................................................................................................................22二、维修指导..............................................................................................................................................241、进气歧管、油轨、喷油器更换.....................................................................................................24

1.1、所需工具和辅料.................................................................................................................24

1.2、拆卸步骤.............................................................................................................................24

1.3安装步骤...............................................................................................................................252、凸轮轴、轴瓦、气门及气门油封更换.........................................................................................25

2.1、所需工具和辅料.................................................................................................................25

2.2、拆卸步骤.............................................................................................................................25

2.3、检查.....................................................................................................................................27

2.3.1、气门弹簧检查..........................................................................................................27

2.3.2、凸轮轴轴径检查.......................................................................................................28

2.3.3、凸轮高检查..............................................................................................................28

2.3.4、气门检查..................................................................................................................28

2.3.5、凸轮轴轴向间隙检查...............................................................................................29

2.3.6、缸盖的平面度检查...................................................................................................30

2.4、安装步骤.............................................................................................................................30

2.4.1、装配顺序..................................................................................................................30

2.4.2、装配注意事项..........................................................................................................303、节温器更换....................................................................................................................................31

3.1结构图...................................................................................................................................31

3.2、所需工具和辅料.................................................................................................................31

3.3、拆卸步骤.............................................................................................................................31

3.4、检查.....................................................................................................................................31

3.5、安装步骤.............................................................................................................................32

3.5.1、装配顺序..................................................................................................................32

3.5.2、注意事项..................................................................................................................32第四节、短发动机部分......................................................................................................................................33一、结构图..................................................................................................................................................33二、维修指导..............................................................................................................................................351、油底壳更换....................................................................................................................................35

1.1、所需工具和辅料.................................................................................................................35

1.2、拆卸步骤.............................................................................................................................35

1.3、安装步骤.............................................................................................................................362、机油集滤器更换............................................................................................................................36

2.1、所需工具和辅料.................................................................................................................36

2.2、拆卸步骤.............................................................................................................................37

2.3、安装步骤.............................................................................................................................373、活塞、活塞环、活塞销、连杆瓦更换.........................................................................................37

3.1、所需工具和辅料.................................................................................................................37

3.2、拆卸步骤...........................................................................................................................37

3.3、检查.....................................................................................................................................39

3.3.1、活塞直径检查..........................................................................................................39

3.3.2、活塞环与环槽的间隙检查.......................................................................................39

3.3.3、活塞环的端隙检查................