The brake pneumatic drive has a source of compressed air - compressor 1. Compressor, pressure regulator 2, fuse 3 against freezing of condensate in compressed air and condensation receiver 11 - the supply part of the drive, from which purified compressed air at a given pressure is supplied to the remaining parts of the pneumatic drive and to other compressed air consumers

Design and operation of supply line devices

The pneumatic drive of the brake mechanisms (Fig. 1) has a source of compressed air - compressor 1

The compressor is piston type, two-cylinder, single-stage compression, with a capacity of 220 l/min at a crankshaft speed of 2000 rpm and a back pressure of 700 kPa; installed on the front end of the flywheel housing.

The pressure regulator automatically maintains the pressure in the pneumatic brake drive system within the range of 620-750 kPa, protects the pneumatic system from exceeding the maximum pressure (1000-1350 kPa) and protects the pneumatic system from contamination.

Freeze guard for the KamAZ air brake system

The antifreeze guard is designed to protect pipelines and devices of the pneumatic brake drive from condensate freezing

Design and operation of service brake pneumatic actuators

The service brake pneumatic drive is divided into two circuits: I brakes the wheels of the front axle, II brakes the wheels of the rear bogie.

The triple safety valve serves to divide the line from the compressor into three autonomous circuits - two main (front axle wheel brake drive and rear bogie wheel brake drive) and one additional (emergency brake release system drive), as well as to automatically shut off the damaged circuit with in order to maintain pressure in serviceable circuits

The two-section brake valve is designed to control the actuators of the dual-circuit drive of the service brake

The brake valve drive is mechanical, designed to transfer force from the driver's foot through the system of rods and levers to the brake valve lever.

The pressure limiting valve serves to reduce the air pressure in the brake chambers of the front axle during low-intensity braking, which improves stability and controllability (especially on slippery roads), as well as to quickly release air from the brake chambers when releasing the brakes

Brake chamber type 24 is designed to actuate the brake mechanisms of the front wheels of the car.

The rear bogie brake pneumatic drive (circuit II) consists of a part of a triple safety valve 1, two receivers 3 with a total volume of 40 l, a part of a two-pointer pressure gauge 2, an upper section of the brake valve 6, a valve 8

The automatic brake force regulator is designed to automatically regulate the braking forces on the wheels of the rear bogie depending on changes in the axial load on them and accelerating the release of the wheels of this bogie

Design and operation of Kamaz parking (spare) brake devices

The parking brake is designed to hold a stationary vehicle on a horizontal section, path or slope specified by the rules of the road

Maintenance of brake mechanisms and brake pneumatic drive Kamaz

Maintenance of brake mechanisms consists of lubricating the adjusting levers and bushings of the expansion cam shafts;