It is not recommended to single-handedly replace the engine mounts, as during performing works corresponding skills and equipment will be required. The replacement itself may become quite laborious: in some cars it is necessary to lift the engine with the help of a jack, remove the radiator, the headlight and exhaust system elements.

The engine mounts can wear out unevenly: in the cars with transverse engine mounting the rear mount breaks down earlier than the front one; in cars with longitudinal – the left one breaks down earlier than the right one. In order to understand that the time for mounts replacement has come you need to visually inspect them. In most cars the upper mounts are easier to inspect from the under-bonnet space, the lower – from the car bottom side, for which a jack or a servicing pit will be necessary. The parts should be replaced if cracks, free play or leaks are found.

A few types of the mounts are used for gearbox. They perform different functions. Rubber-metal or hydraulic mounts are used for fastening a gearbox to an engine and a car body. Their function is to provide reliable fastening of units and absorbing of vibrations, occurring during their operation. In construction of various car models different quantity of fasteners may be used, moreover, the lower transmission mount concurrently performs function of the rear engine mount. For providing of a movable connection of the gear lever, torque rod and the shift rod, a shifter mount also known as lever mount is used. In fact it is an outer holder for a lever pin. The pin and the mount form a ball joint.

The transmission mount should be replaced at appearance of such defects as component free play, its exfoliation, cracking or elasticity loss of a rubber damper, deformation or breakage of an aluminum bracket. The hydraulic mounts are to be replaced in case of body pressurization failure, and the ball lever mounts – at wear of a plastic insert of the holder. Defectiveness of the parts can be noticed by the following signs:

• free play and falling of the lever;
• vibrations and knocks to the gearbox selector at irregularities overrunning;
• strange sounds in the front car part, especially at start;
• leaks of hydraulic fluid on surfaces of the parts (useful for hydro-mounts).