Attention! At different stages of production, different grades of oil were poured into the gearbox. Gearboxes up to 051 110 used SAE 80 gear oil, starting with 051 110, SAE 75W85 oil. Mixing of these oils is not allowed. When changing gear oil, fill in the second grade oil. In this case, it is necessary to completely drain the oil of the previous brand from the gearbox.
Pic. 185. Layout of gears 1-5 gears, as well as reverse gears (up) and gear shift (at the bottom)
Gears are engaged through the shift rod directly by the gear lever. On fig. 185 shows gearshift patterns.
Inside the gearbox, the gears are engaged by a rod, which, through separate forks, connects the engagement clutches to the gears of the gears.
Two electrical devices are connected to the gearbox - a speedometer sensor and a reverse signal switch. The signal transmitted to the speedometer is taken from the driven bevel gear of the differential. The speedometer converts the received impulses and provides information about the speed. The reverse switch is operated directly by the reverse gear fork.
Torque is transmitted through the clutch to the driven shaft of the gearbox. It contains the driven gears of 1-5 gears and the reverse gear. The gears are in contact with the countershaft gears. When the shift lever is in the neutral position, the gears rotate freely. When the gear is engaged, one of the pairs of gears is connected to the shaft and the torque is transmitted to the gearbox driven shaft. The ratio of the teeth of a pair of gears forms a gear ratio. All gears, with the exception of reverse gear, are synchronized.