AvtoVAZ began releasing a new 5-speed gearbox

C January 12 mechanical-assembly plant of AvtoVAZ production shifted to a new five-speed box transmissions. New gearbox will be equipped with all the cars "classic" of the family, the VAZ-21213 VAZ-21214 car and "Chevrolet-Niva." About the peculiarities of the new PPC says Michael Votinov, head of powertrain TDR JSC "AvtoVAZ". If we look at the history of the development of a 5-speed gearbox, it was designed instead of the previous 4-speed, because there were stricter requirements on noise. Instead of a package of four parts, contracted by the nut, there was a package of eleven parts. These parts are in service, as it were selected for a more comfortable position. As a result, the package appeared a gap, which is also growing rapidly. In practice, this translates into an increase in axial clearance and samovyklyuchenie fifth-gear. The new checkpoint has undergone substantial revision. With locking ring, which is the hub for the synchronizer, cut off part of the package details. This will leave a package not eleven, and four parts. At the same time instead of pryamobochnyh switched to involute splines to connect the "secondary shaft, the shaft flange." These solutions allow to avoid increasing the gap between the parts in the package. Managed to escape and the so-called seasonal breakdown. In the spring, as a rule, the driver leaves the car on the ground thawed. During the night soil freeze, and the driver, including reverse gear, the car pulls abruptly away. This gives rise to large dynamic loads, and the intermediate gear teeth to break. The new CAT module linking reversing increased from 2.5 mm to 2.75 mm. Changed gear reverse, causing changes in three parts: a block of gears, pinion gears and the driven intermediate reverse. Numerous posters and road tests confirmed the fidelity of the design concept. Moreover, the testers were loaded torque box is not in 132, and 165 lb-ft (Nm), which corresponds to a two-liter engine. And the results were good - all the boxes, these trials have stood with dignity