Preface

This course book series are compiled on the basis of the demand for developing Corporation Company, in order to enhance professional ability of service marketers, strengthen professional training of HW series transmission over the users and advance training over various types of new products promotion, simultaneously popularize products knowledge in the Corporation Company. According to the actual requirements of training, we compiled training course book of primary level, secondary level and high level.The primary training course book includes basic knowledge of transmission, structural principle of HW series transmission, operating requirements, its own features and advantages, and its comparison with the normal transmission on the market. In addition, the trainer shall get some ideas of assembly process and maintenance process, and master the form process of the transmission.The secondary training course book includes Spare Parts Manual and complete maintenance process of HW series transmission. In principle, the people who are going to receive the secondary training must understand and master the contents of the primary training course book. It is required that the trainer shall have a better understanding of the contents of the primary training course, master the structure of HW series transmission, know the basic principle of HW series transmission. Learn the secondary course book; master the correct operation, operation methods and daily maintenance control points for the transmission. When finishing the secondary training, the trainer shall master the correct methods to dismantle, adjust, maintain and repair HW series transmission; have the ability to instruct the service station in daily maintenance of HW transmission, to diagnose the common faults and to make preliminary analysis on some special faults; and also have basic ability to train the people at his service station an at other ones.The high level training course book includes common fault mode, common fault analysis and diagnosis and identification of components and accessories of HW series transmission. The people who are going to receive the high level training must read the primary and secondary course books carefully; know everything about the interrelationship among structure, principle and all parts of HW series transmission, and master the maintenance control points of HW series transmission. When finishing the high level training, the trainer shall be able to diagnose various maintenance methods and influence of damaged parts on transmission assembly; shall be familiar with the influence of other components and parts connecting to the transmission on the transmission; be able to diagnose the true cause of the fault occurred in the transmission via analysis on the service condition and the condition of damaged parts, and be able to take the proper maintenance measures to solve the problems and instruct the relevant personnel in maintaining and repairing according to the actual condition. This course book is a bound volume consisting of contents of the primary, secondary and high level course books. The first part is the contents of primary level; the second part is the contents of secondary level including Chapter One and Chapter Two; and the contents of high level including Chapter Three and Chapter Four.This course book is compiled by Leading & Training Group of Products and Marketing Service of CHINA NATIONAL HEAVY DUTY TRUCK GROUP GEAR CO.,LTD. (CNHTC).Editor in chiefYU TianmingChief censorOUYANG PingCompiled byREN FuchenSuggestionsforimprovementwillbegratefullyreceived.EditorMarch 2009