Parking brake is usually a mechanical cable-operated action. So the hydraulics for the parking brake is not suitable. Parking brake is activated by moving the lever up to a certain number of clicks dog ratchet mechanism. Pads are pressed against the brake drum and thus ensured retention of the car on the spot. In order to disinhibited car, just press the button on the handle of the lever and lower the lever to its original position until it stops.
During the operation, even though such a simple device the parking brake, can meet a variety of faults in his work. This is usually to blame the mechanical wear and corrosion. Water is the main danger. It penetrates into the gaps between the cable and its sheath. At low temperatures, the cable can freeze. In other cases, it can clog or rust eats. The water feels like home, and other brake parts. It is corrosive to metal parts and is mixed with the products of wear of brake linings. As a rule, the result of all this is a failure in the parking brake. Eliminate this failure, you can clear the mechanism of contamination, stirred up the details, heavily rusted watering place with a special liquid, and then, in order to prevent smearing axle landing and high coupling grease.
The efficiency of the brake frequently disrupted due to a number of mechanical reasons. This may be weakening and stretching a cable drive, the bundle of his shell, his break wires, wear and tear release lever, friction plates, fingers, etc. without the help of special screws you can adjust the cable tension. These screws are also susceptible to moisture, so keep them to a layer of grease.
It happens that the lever spontaneously falls from the working position. The reasons could be wear and tear or wrinkle dog tooth ratchet locking pawl slides along with the sector. Here it would be best to replace the ratchet assembly. To rid yourself of the possible consequences of such samoproizvola better insure themselves and leaving the car left on the transfer, as do experienced motorists.