The mechanism for engaging and disengaging individual gears.
Shifting the gear is done by shifting the gear wheel or the sliding sleeve of the synchronizer on the main shaft by means of sliders equipped with forks, encircling the collar of the sliding part with its arms. The slides are guided in special holes in the gearbox housing cover. In order to prevent the gear from turning itself off while driving, the sliders are fixed in certain positions. (in neutral or in gear) by ball latches with springs embedded in the lid of the box, the balls of which fit into the appropriate slots on the slider. The crosshead is moved with the gear lever. This lever, embedded in the lid of the box, lower (shorter) with its part enters the appropriate notch of the slider's fork. The upper part of the lever is equipped with a grip knob.
On some cars, the gear lever is located under the steering wheel.
In the FSO Warszawa gearbox, gear shifting involves turning the gearshift levers, which shift the forks of individual gears. In this chest, similar to the others, in addition to the device for determining the position of the gearshift lever, a locking device is used, preventing simultaneous gears from being engaged, which would damage the gearbox.