Developing the maintenance of the brake system of the Tka7 service rail cars.

More attention should be paid to the functioning of the brake equipment of the Tka7 service railcars. Particularly the detaching of brakes discovered in trial operation should be remedied. Such detachings took place when the Tka7 alone was stopped by the direct-acting brake (1 to 2 bar pressure in brake cylinder). The direct-acting brake was set in the closed position, then a 1 bar pressure drop in the brake conduit was realized by the train-brake valve, and also the train brake was set in the closed position. The brakes gradually started their releasing action. This should also be checked in the other Tka7 service railcars.