LINK-TRACK 5065958 - Caterpillar

brake system is actuated by pressure air. There is a brake that is located at each rear wheel. The air compressor sends pressure air to the air tank. This air is sent through the two check valves for the air tank. Air can only flow in one direction through the check valves. The air tank has a relief valve and a drain valve.Pressure air flows from the air tank to the air control valve for the service brakes. Pressure air also flows from the air control valve to the air horn and the parking brake.Pressure air flows from the air control valve to the service brakes in order to activate the service brakes. The service brakes are activated by independent circuits. The independent circuits are for the right side of the machine and the left side of the machine. The air tank can provide enough pressure air in order to actuate the service brakes five times after the engine stops and the air compressor stops. In case an air line fails or a circuit fails, one section of the air tank will still have pressure air. The pressure air will be used to engage the service brakes on one tandem drive.