The repair kit for the gear shift mechanism, installed on the mechanical part of the automated robotic gearbox QR512E-1700001ab of the Chery QQ car, includes: the pin itself, the stopper, the cotter pin of the gearbox gear shift mechanism housing. A simplified diagram of the shift mechanism assembly is given at the end of the repair kit description.
Breakage of the pin of the mechanism for switching gear forks of the chery QQ automatic transmission may be accompanied by the following symptoms:
1. When the check on the "sun" gearbox lights up on the instrument panel and the corresponding errors P1818 or together with P0790, rarely the error P1810 can appear separately.
2. It is impossible to turn on the first gear separately, the reverse gear separately (more often with a broken cotter pin or a broken wall of the "flag"), switching is possible if you turn off the car, wait and start it again, and it can also automatically switch to neutral gear while driving after switching on.
3. If the first gear is not included, you should pay attention to the upper cotter pin, or to the pin position fixing bolt itself.
Removal and installation of the mechanism for switching gear forks of the QR512E-1707001ab robotic gearbox is carried out by removing the hydraulic unit without the "Tank-pump-clutch drive" assembly.

Next, you need to unscrew five hexagon bolts from above and a hidden bolt behind the box, which is screwed into the mechanical part of the gearbox itself and fixes the "flag", which switches the gear forks.

You should inspect the cotter pin and the wall of the pin on which the bolt goes

It is necessary to examine the cotter pin of the "flag".

The leakage of the working fluid as a result of wear of the cuffs of the piston of the valve block of the Chery QQ robotic box is accompanied by a loss of pressure in the system, and in the most negative case - or the destruction of the cotter pin axis and, as a consequence, the pin wall of the gear shifting mechanism of the mechanical part of the gearbox itself, or a knocked out plug of the automatic hydraulic block robotic gearbox.