The gearbox is a complex unit, and therefore it is recommended to repair it at specialized car service enterprises. When removing and installing many parts, it is necessary to measure the gaps and adjust them using shims and washers. If the gearbox is defective or operates with a lot of noise, it is advisable to entrust its repair to a specialist or replace the gearbox, which can be much cheaper. However, some of the gearbox malfunctions can be eliminated without removing it from the car.
Despite all the difficulties, an experienced specialist can repair the gearbox even in a garage, having a special tool and doing the job sequentially, step by step, noting the operations performed. To repair the transmission, you will need circlip pliers, bearing pullers, an inertial reverse hammer, a set of punches, a micrometer, a hydraulic press and other specialized tools.
Before removing the gearbox, try to accurately determine the malfunction of the gearbox, which will greatly facilitate repairs in the future. Determine if the fault is electrical, mechanical or hydraulic. Most inspections require the transmission to be installed on the vehicle, so do not remove the transmission from the vehicle for repair before the problem has been professionally diagnosed.