Abstract: This thesis focused on the cars transmission failure analysis and repair methods. Transmission system transmission are an important part. In the use of vehicles, the transmission may not be the case, as the failure, directly affect the normal operation of motor vehicles. Now rapidly entering the car home, car privatization improve, so will affect the automotive fault every one of us. Analysis of transmission failure situation, the reasons to explore the transmission of fault diagnosis and failure to exclude methods of great and realistic significance. This paper focuses on the Santana 2000 sedans fault of a correct understanding of manual transmission failures, and better use and maintenance of transmission Keywords : Santana2000 Manual Transmission Failure Analysis Gearshift lever Synchromesh 目录 1 引言……………………………………………………………………………6 2 变速器概述…………………………………………………………………… 6 变速器的功用及类型………………………………………………………6 变速器的功用…………………………………………………………… 6 变速器的类型…………………………………………………………… 7 3 变速器传动机构……………………………………………………………… 8 变速器的工作原理…………………………………………………………8 …………………………………………………………………9 …………………………………………………………………… 9 …………………………………………………… 10 档位分析…………………………………………………………………… 11 三轴式变速器………………………………………………………………… 12 …………………………………………………………………… 12 …………………………………………………… 14 4 桑塔纳2000轿车变速器结构与特性………………………………………… 16 ……………………………………………… 16 桑塔纳2000轿车变速器的特性…………………………………………… 18 5桑塔纳2000轿车变速器总成的拆卸和安装………………………………… 19 ……………………………………………………………19 ……………………………………………………………21 6 桑塔纳2000轿车变速器常见