9.10. Maintenance and repair of brake systems
Maintenance of brake systems includes carrying out the planned works provided by the operation manual on the car, and performance of work, connected with maintenance of operability of the car.
In use the car the level of brake fluid in a tank of the main brake cylinder, tightness of the hydraulic drive of brakes, and also serviceability of the working brake system and operability of parking is periodically checked.
The repair work connected with maintenance of knots and details of brake management assumes replacement of worn-out details, sealing cuffs, protective covers, diaphragms, and also work on restoration and maintenance of operability of knots and details.
Before performance of repair work knots and details of brake management have to be washed carefully out by warm water with detergents and are dried up by compressed air. Use of gasoline, diesel fuel, trichlorethylene or any other mineral solvents is inadmissible as it causes damage of rubber details. TU 38.101.129-80 NG-213 liquids and the state standard specification 6757-73 castor oil are applied to lubricant of the rubbing details at assembly.