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CONTENTS Foreword ........................................................................................................................................................... 2 Chapter One Introduction of QR513 Transmission........................................................................................... 3 I. Assembly Drawing of QR513 Transmission.......................................................................................... 3 II. Driving Characteristics of QR513 Transmission .................................................................................. 4 III. SN of QR513 Transmission ................................................................................................................ 4 1. Print position of SN of QR513 transmission................................................................................. 4 2. Composition and connotation of SN of QR513 transmission ....................................................... 4 IV. Specification of QR513 Transmission ................................................................................................. 6 V. Maintenance Instruction ....................................................................................................................... 7 Chapter Two Decomposition of QR513 Transmission...................................................................................... 8 I. Decomposition Process for QR513 Transmission ................................................................................. 8 1. Bleeding lubricant in transmission ................................................................................................ 8 2. Disassembly of external parts of transmission .............................................................................. 8 3. Separation of gear shift mechanism and transmission................................................................... 9 4. Disassembly of the connecting bolts for clutch and transmission housings................................ 10 5. Separation of transmission and clutch housings.......................................................................... 10 6. Separation of interior transmission parts and fork module from the housing ............................. 11 7. Separation of differential assembly and clutch housing .............................................................. 12 8. Disassembly of gearshift fork mechanism .................................................................................. 12 9. Disassembly of gearshift mechanism .......................................................................................... 13 10. Disassembly of input shaft ........................................................................................................ 13 11. Disassembly of output shaft ...................................................................................................... 15 12. Disassembly of differential ....................................................................................................... 15 13. Disassembly of release mechanism of clutch............................................................................ 16 14. Disassembly of transmission housing ....................................................................................... 17 Chapter Three Assembly and Regulation of QR513 Transmission ................................................................. 18 I. Assembly of QR513 Transmission....................................................................................................... 18 1. Assembly of differential assembly .............................................................................................. 18 2. Assembly of clutch housing ........................................................................................................ 19 3. Assembly of transmission housing .............................................................................................. 23 4. Assembly of gearshift mechanism assembly............................................................................... 23 5. Assembly of gearshift fork assembly .......................................................................................... 24 6. Regulation and assembly of input shaft assembly....................................................................... 24 7. Regulation and assembly of output shaft assembly..................................................................... 26 8. Assembly and regulation of transmission assembly.................................................................... 28 9. Disassembly of external accessories of transmission .................................................................. 31 10. Refilling and volume regulation of transmission lubricant ....................................................... 32 II. Tightening Torque Table for Fasteners ............................................................................................... 34 Chapter Four General Failures and Troubleshooting........................................................................... 35 |