51
The front and rear axle drive shafts have the wiper rings 36. The outer surface of the
rings has threaded helical grooves which direct the oil when the shafts rotate in the section be-
tween the sleeves and the crankcase. The helical groove has different routes: for the front axle
drive shaft it is the left route, for the rear axle drive shaft it is the right route. According to the
purpose the wiper rings have the stamped letters «
П
» (front) and «
З
» (rear). On assembling the
transfer gearbox it is necessary to check that wiper rings are correctly installed, otherwise there
will be oil leakage through the sleeve.
1-primary shaft; 2,35,60-flanges; 3,27,29,39,61,65-bearing cap; 4,26,31,67-roller bearing; 5,57-bolts; 6,56-
pneumatic cylinder cover; 7,55-bushing; 8-shift mechanism housing; 9-neutral piston; 10, 22,54-pistons;
11,49-rod; 12-low gear indicator switch; 13-ball; 14-spring; 15-plug; 16-pin; 17-gear shifting fork; 18-bolt;
19,63-high gear pinions; 20-bushing; 21-gear shift clutch; 23-cylinder; 24,33-low gear pinions; 25-
crankcase; 28-breather; 30-lay-shaft; 32-spacer; 34- rear axle drive shaft; 36-wiper rings; 37,40,46,58-ball
bearing; 38,66-bearing nuts; 41-differential rear bearing crankcase; 42-differential cage; 43-differential
cage with the lower shaft pinion; 44-crown gear; 45-sun pinion; 47-differential lock coupling; 48-
differential lock yoke; 50-piston stop; 51-differential lock indicator switch; 52-outer spring; 53-inner
spring; 59-front axle drive shaft; 62-satellite gear; 64-speedometer drive sprocket; 68- pulse generator
Fig. 32 - Transfer Gearbox
