Spare parts catalog for Mercedes-Benz Transmissions where you can be sure to find every part you need.
Being a successful premium German automaker, Daimler offered convenient solutions for its vehicles, including transmissions. It is believed that the first Mercedes-Benz with “automatic gear changes” was the “Big Mercedes” 770 (W07), which was produced in the years 1930-1943. He had a 3-speed manual transmission, and since 1938, 4-speed with overdrive (overdrive). Overdrive literally translates as overdrive. Consider an additional two-stage box with an increased range of gears. On the 770, the overdrive was activated with a lever that activates its vacuum-hydraulic drive.
Other serial automatic transmission solutions on Mercedes-Benz models appeared in the 1950s. Here it is worth mentioning the Mercedes-Benz 300C, which, after restyling in 1955, received a 3-step hydromechanical "automatic" Borg-Warner DG 150M. In 1957, the Hydrak transmission was optionally available on models 220 S and 219 (type W180). It was a 4-speed manual transmission. The clutch of such a manual transmission was supplemented by an electric servo drive manufactured by Fichtel & Sachs and a hydraulic clutch produced by Daimler. There was no clutch pedal on the cars with Hydrak, and to shift gears, it was necessary to use a lever mounted on the steering column, with the “gas” released.
The first hydromechanical “automatic” of its own production was the box with the designation 722.2. It debuted in 1961 on the model W111 220 SEB and on the W111 300 SE. This box was 4-speed, but instead of the usual torque converter it was equipped with a hydraulic clutch. This box was released right up to 1983. In 1967, its version with a torque converter appeared, it was designated with the index 722.1. This box was placed on both the W116 and the W123 and other models, and it was produced until 1983. In 1964, a specially reinforced 4-speed hydromechanical transmission was created specifically for the 6-seater Mercedes-Benz 600, in which the number of planetary mechanisms was increased from three to six. In 1970, a special box appeared to work in tandem with the V8 engines. It had an index of 722.0, but it only got 3 gears. The special enhanced version 722.003 was created in 1975 to work with the 6.8-liter engine of the model 450 SEL 6.9. This box is still considered the most unkillable one among all hydro-mechanical transmissions.TO BE CONTINUED...