Transmission: 1 - bracket for the rear support of the power unit; 2 - thrust of the switching mechanism; 3 - gearbox housing; 4 - breather (filler plug); 5 — the lever of a shaft of a drive of deenergizing of coupling; 6 - back cover; 7 — a cover of the mechanism of a gear change; 8 - hole plug for adjusting the control drive; 9 — a shaft of the mechanism of a gear change; 10 - speed sensor; 11 - holder of the outlet hose of the heater radiator; 12 — an epiploon of a drive of a forward wheel; 13 - intermediate crankcase; 14 - input shaft; 15 — stopper of a control aperture of level of oil
Gearbox - mechanical, two-shaft, with five forward gears and one reverse gear, with synchronizers in all forward gears.
It is structurally integrated with the differential and final drive.
The gearbox housing consists of three parts cast from aluminum alloy: the crankcase combined with the clutch housing, the intermediate crankcase and the rear cover.
The input shaft has a collapsible design, a block of drive gears of 1-4 gears is installed on it on splines, as well as a drive gear of 5 gears.
All drive gears are in constant mesh with the corresponding driven gears in the forward gears.
Gears - cylindrical, helical, with the exception of spur reverse gears.
Output shaft - hollow (for supplying oil to the bearings of the driven gears).
It contains the driven gears, forward gear synchronizers and the final drive gear, made integral with the shaft.
Each driven gear has an additional spur ring to which the sliding synchronizer clutch is connected when the gear is engaged.
The front shaft bearings are roller bearings, the rear ones are ball bearings.
Roller bearings perceive large radial loads, ball bearings perceive both radial and axial loads that occur in the engagement of a pair of helical gears.
The shafts are kept from axial movement by ball bearings installed in the intermediate housing.
Differential - conical two-satellite.
The bearing preload is adjusted by turning the bearing adjusting nut (from the left drive).
The main gear driven gear is bolted to the flange of the differential box.
The differential box has two satellites and two side gears.
The satellites are mounted on an axle fixed in the differential box.
The side gears are connected to the splined shanks of the housings of the internal hinges of the wheel drives, which are fixed in the gears with split spring rings.
Oil seals pressed into the cover and nut work on the cylindrical surfaces of the shanks.
To prevent water ingress and reduce dust ingress into the gearbox cavity, its breather is installed in the upper part of the gear shift housing.
Oil can be filled into the gearbox by unscrewing the breather.
The gearbox control drive consists of a control mechanism, a control rod and a gear change mechanism.
The gear lever is mounted on the floor tunnel in the plastic housing of the control mechanism and is connected to the control rod.
The other end of the control rod by means of a terminal connection is attached to the tip of the gearshift mechanism mounted on the gearbox.
The gearbox is factory-filled with gear oil designed to last the life of the vehicle.
The oil level in the gearbox should be at the level of the lower edge of the control hole.
Oil level plug installed on sealant
There is no drain hole in the gearbox.
To drain the oil from the gearbox, you will need to remove the lower crankcase cover.
An oil leak from the gearbox can be found at the installation sites of the wheel drive oil seals and the input shaft.
Operations for replacing the input shaft seal, see the work Removing the clutch release mechanism.