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25 rotate freely. Set friction ball of gear, fender and clamp in from upside of input shaft, and then perform axial orientation for the fourth gear driving gear. Set fifth gear needle bearing applied with the gear oil of the same designation as that used inside the transmission assembly onto the input shaft from upside of the input shaft. Set fifth gear driving gear assembly in from upside of input shaft with the end with synchronizer cone of the gear assembly up, and then make sure that the gear assembly can rotate freely. Set a 3/4/5 gears synchronizer ring in from upside of input shaft with conical surface of the synchronizer ring applied with the gear oil of the same designation as that used inside the transmission assembly, and then check and make sure that the synchronizer ring should envelop loosely on synchronizer cone of the fifth gear driving gear assembly and can rotate relative to the synchronizer cone. Press fifth gear synchronizer assembly onto the input shaft with the end surface of gear hub with oil groove down, turn the synchronizer ring to make its guide block completely enter the groove corresponding to the gear hub, and then make sure that the synchronizer ring is not locked. Fit rear snap ring of input shaft; when fitting, try to use the thicker snap ring, if really unsuitable, select the snap ring of next thinner level, and then check if the snap ring has really enter the groove with the clearance between the snap ring and the groove not exceeding 0.07mm. Simultaneously press front and rear bearings of input shaft onto the input shaft with the side of front bearing of input shaft having word down and the side of rear bearing of input shaft having word up, and then check and make sure that the outer rings of the bearings can rotate freely. Refer to Figure 26. Note: There are two friction balls between the bearing baffles (2 sheets). Be careful to install them in full. Input shaft 3/4 gears needle bearing Third gear driving gear assembly 3/4/5 gears synchronizer ring Rear bearing of input shaft
Front bearing of input shaft
Front clip spring
3/4 gears synchronizer assembly
5 gear synchronizer assembly
5 gear needle bearing
5 gear driving gear assembly
Gear baffle
Clip-gear baffle
Rear clip spring
4 gear driving gear assembly
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