11. Manual transmissionThe manual transmission is installed in a motive compartment cross and pribolchivatsya directly to the engine. The scheme of the transmission such is that allows to transfer in the shortest way rotation to forward wheels. The arrangement of the transmission provides its optimum cooling with an air stream.
Arrangement of traffic jams on a casing of the transmission of models after 1994 of the issue.
And — the Stopper of a jellied mouth
The transmission is located in the case from aluminum alloy, equipped with the closed traffic jams of a jellied mouth, drain and-level openings. On early models the stopper of a jellied mouth is equipped with the measuring probe for simplification of check of level of gearbox oil; watch more detailed information in the Section Draining and a flood of gearbox oil in the manual transmission. On a case there are two interfaced surfaces; one of surfaces adjoins to a coupling dome which sealing is provided by means of pro-masonry sealant and one - to a back cover of the transmission which is pressurized by firm laying. The "labyrinth" ventilating channel in the top part of a casing of the transmission allows air to extend, providing removal of the gases emitted by lubricant liquid. In the channel there is a filtering cap preventing hit in moisture and dirt.
Rotation of the crankshaft through coupling is transferred to a main shaft of the transmission which vents connects to the conducted clutch plate. All six leading gear wheels are established on a main shaft; gear wheels back, the first and second transfers lean on sliding bearings, and gear wheels of the third, fourth and fifth transfers - on needle bearings.
The conducted gear wheels of all five forward transfers are established on a secondary shaft. Besides gear wheels of the third, fourth and fifth transfers lean on needle bearings. The gear wheel of the reverse gear is combined with the synchronizer of the first / second of transfers.
Gear wheels are in continuous gearing with the conducted cogwheels corresponding to them and independently rotate on transmission shaft before the choice of the transfer corresponding to them. Distinctions in the diameters and number of teeth between gear wheels and cogwheels are provided by necessary reduction of turns of a shaft and increase in the rotating moment. Further, rotation is transmitted through a secondary shaft to gear wheels of the main transfer/differential.
All transfers are equipped with synchronizers, including back. At the transfer choice, the movement of the transmission control lever established on a floor by means of a rod of the choice of transfers is transferred to the transmission. The rod in turn involves a set of selector forks in the transmission which enter gearing with couplings of synchronizers. Couplings are radially fixed on transmission shaft, however, can move along an axis of shaft on shlitsovanny naves, bringing the blocking rings into contact with gear wheels of the corresponding transfers. Conic surfaces between rings and gear wheels / cogwheels work as frictional coupling, gradually leveling the speed with a synchronizer coupling speed (and therefore transmission shaft).
Teeth of a doggie on outer side of the blocking ring are prevented by gearing of a ring of the synchronizer with a cogwheel / gear wheel until their speeds completely are not made even; such mechanism provides smooth switching of speeds and substantially lowers the noise and mechanical wear caused by frequent gear shifting.
At turning on of the reverse gear the intermediate gear wheel is given to gearing with a gear wheel of the reverse gear and teeth on the external surface of the coupling of the synchronizer of the first / second of transfers. Such gearing provides necessary reduction of speed and provides rotation of the conducted shaft to the opposite side, allowing the car to move a backing.