Primary shaft 29 (figure 5.2) the gearbox is designed as a block of drive gears, which are in constant engagement with the driven gears of all forward gears. Secondary shaft 25 is hollow, with removable drive gear 3 of the main transmission. On the secondary shaft of the gearbox there are driven gears 16, 18, 19, 21, 23 and synchronizers 17, 20, 24 of the forward gears. Front bearings 4, 31 shafts are roller, rear 22, 28 are ball. Under the front bearing of the secondary shaft of the gearbox there is an oil collector 5, which directs the flow of oil into the secondary shaft and then under the driven gears.
The differential is dual-satellite. The preliminary tension in the differential bearings is adjusted by selecting the thickness of ring 13. The driven gear 12 of the main transmission is attached to the flange of the differential box. A setting ring 7 of the magnetoelectric speed sensor is installed on one of the journals of the differential box.
The gearbox control drive consists of lever 11 (figure 5.3) gear shift, ball joint, rod 10 and gear selection mechanism (installed in the gearbox housing). In order to eliminate spontaneous disengagement of gears due to axial movement of the power unit on its supports during the movement of the Lada Kalina, a reactive thrust 19 is introduced into the gearbox control drive, one end of which is connected to the power unit, and the housing 7 of the ball joint of the gear shift lever is attached to the other end.
The reverse gear lock is controlled by a solenoid mounted on the gearbox housing, which, in turn, is controlled by switch 13 mounted on gear shift lever 11.
On the Lada Kalina, the gear selection mechanism is made as a separate unit and is attached to the plane of the clutch housing inside the gearbox.
In building 9 (figure 5.4) two axles are fixed to the gear selection mechanism. On axis 3, a three-arm gear selector lever 2 and two locking brackets 7 and 11 are installed. The other axis 1 passes through the holes of the locking brackets, fixing them from turning. Shoulder b three-arm lever 2 is used to engage forward gears, the arm a - to engage reverse gear, and the third arm is affected by the gear selection rod lever, connected via a cardan joint to rod 10 (see figure 5.3) gearbox control drive. On axis 6 (see figure 5.4) fork 8 for engaging reverse gear is installed. The gearbox is filled with transmission oil, the level of which should be between the control marks on the oil level indicator.
Figure 5.4. Gear selection mechanism: 1 - guide axis of the locking brackets; 2 - three-arm lever; 3 - gear selector lever axis; 4, 10 - spring; 5 - retaining ring; 6 - reverse fork axle; 7, 11 - locking brackets; 8 - reverse gear engagement fork; 9 - gear selection mechanism housing; a - the shoulder of the three-arm lever for engaging reverse gear; b - arm of a three-arm lever for selecting forward gears
Figure 5.3. Gear shift drive: 1 - damper bushing; 2 - spacer sleeve; 3, 16, 20 - nuts; 4, 8, 18 - bolts; 5 - protective cover; 6 - retaining ring; 7 - ball joint housing; 9, 21 - tension clamps; 10 - gearbox control drive rod; 11 - gear shift lever; 12 - Wiring harness mounting clamp; 13 - Reverse gear lock control solenoid switch; 14 - gear shift lever handle; 15 - washer; 17 - Gear shift lever handle cover; 19 - jet thrust
Figure 5.2. Gearbox: 1 - clutch release bearing; 2 - Clutch release bearing sleeve guide sleeve; 3 - main gear drive pinion; 4 - secondary shaft roller bearing; 5 - oil collector; 6 - satellite axis; 7 - speed sensor setting ring; 8 - axle shaft gear; 9 - differential box; 10 - satellite; 11 - clutch housing; 12 - driven gear of the main transmission; 13 - adjusting ring; 14 - differential tapered roller bearing; 15 - axle shaft seal; 16 - driven gear of the 1st gear of the secondary shaft; 17 - synchronizer of 1st and 3rd gears; 18 - driven gear of the 2nd gear of the secondary shaft; 19 - driven gear of the 3rd gear of the secondary shaft; 20 - synchronizer of III and IV gears; 21 - driven gear of the IV gear of the secondary shaft; 22 - secondary shaft ball bearing; 23 - driven gear of the V transmission of the secondary shaft; 24 - V gear synchronizer; 25 - secondary shaft; 26 - rear cover of the gearbox housing; 27 - V-gear drive gear; 28 - primary shaft ball bearing; 29 - primary shaft; 30 - gearbox housing; 31 - primary shaft roller bearing; 32 - primary shaft seal; 33 - breather