HARNESS AS 1854245 - Caterpillar

Illustration 1 g00560766
Wheel brake accumulator (1) Gas end (2) Screw plug (3) Steel shell (4) Diaphragm (5) Shutoff button (6) Line connection
Illustration 2 g00928767
View under the cab (7) Wheel brake accumulatorsWheel brake accumulators (7) store energy and the wheel brake accumulators release the energy upon demand. The wheel brake accumulators provide independent operation of the front wheel brakes and the rear wheel brakes. There are two accumulators for the wheel brakes. Each accumulator has a capacity of 750 cm3 (45.75 in3). The gas pressure is 4500 kPa (650 psi).The wheel brake accumulators are charged separately by the valve to the accumulator charging valve and the shuttle valve before going to the wheel brake accumulators. The brake pump and the pilot pump charges the wheel brake accumulators when the pressure in the accumulator drops below the cut-in pressure. The brake pump and the pilot pump stops charging when the pressure reaches cut out pressure.Screw plug (2) is used in order to check the gas pressure by utilizing a device for charging the accumulator.When fluid from line (6) is forced into the accumulator, the gas volume is reduced when the pressure increases. If fluid is discharged from the accumulator, the diaphragm expands until there are equal pressures of gas and fluid.