1 481H-1005081 BOLT-CRANKSHAFT PULLEY 2 481H-1005082 GASKET-CRANKSHAFT PULLEY BOLT 3 473H-1007052 GASKET-COVER TIMING GEAR LWR 4 473H-1007073 TIMING BELT 5 481H-1007070 IDLER PULLEY-TIMING BELT 6 481F-1006041BA TIMING GEAR-CAMSHAFT 7 473H-1007060 TENSIONER ASSY 9 473H-1007050 COVER-TIMING GEAR RR 10 473H-1007081 COVER-TIMING GEAR UPPER 11 473H-1007083 COVER-TIMING GEAR LOWER 12 473H-1005070 SHOCK ABSORBER-ASSY 13 481H-1005071 FRICTION DISC-TIMING GEAR 14 481H-1007082 BOLT(M6*24) 15 S12-3701315 V BELT The gear train can be divided into fixed axle gear train, epicyclic gear train and composite gear train. In practical machinery, a series of meshing gears are often used to meet the working requirements. This transmission system composed of a series of gears is called gear train.   Gear train is widely used in machinery. Its main functions are as follows: to realize the transmission with large transmission ratio. When a large transmission ratio is required between two shafts, if only one pair of gears are used for transmission, the diameters of the two wheels will vary greatly, resulting in pinion. Therefore, the fixed shaft gear train composed of multistage gears can be used to realize. 1. Large transmission ratio. Generally, the transmission ratio of a pair of gears should not be too large. For example, it is required to achieve a transmission ratio of 100. If only a pair of gears are used, the diameter of the large wheel will be 100 times that of the small wheel. If a three-stage gear train is adopted, the diameter of the large wheel can be greatly reduced. 2. Large shaft spacing. If the distance between the two shafts is large and a pair of gears are used for transmission, the diameter of the two gears is bound to be large. If one or more gears are added in the middle, the gear size can be reduced. 3. Speed change or direction change: change the transmission ratio of the gear train with the speed change mechanism (see transmission) to realize speed change; Or set the intermediate wheel to change the steering of the driven shaft.