KIT-AIR COMPRESSOR PISTON 1284308 - Caterpillar

Illustration 1 g03657770The machine is equipped with four brake accumulators (1). Two of the accumulators are for the front brakes and two of the accumulators are for the rear brakes. The rear brake accumulators receive oil from port "A2" of the brake charging valve. The front brake accumulators receive oil from port "A1" of the brake charging valve.The cylinder of each accumulator contains a sealed piston. The chamber on one side of this piston is pressurized with nitrogen gas. The chamber on the other side of this piston contains hydraulic oil.When the engine is operating, the brake charging valve directs hydraulic oil into each accumulator. The accumulators store this oil under pressure. The pressurized oil in the brake accumulators maintains a consistent supply of oil to the brakes and differential locks, regardless of the demands on the hydraulic pump. These accumulators also ensure that the service brakes can be engaged with a dead engine.