Pump function: Notes

Fig 1: Illustration For Step 1 And 2

Courtesy of SAAB-SCANIA OF AMERICA, INC.

1. Pump housing 
2. Pump motor eccentric shaft 

The pump is integrated in the hydraulic unit and consists of two pump elements and a DC motor. Each pump element is driven by a motor which has an eccentric wheel in one shaft end.

The pump has two control valves (inlet and outlet valves) and receives brake fluid from the accumulator chamber (LPA).

The hydraulic pump and electric motor are an integral part of the valve block and cannot be replaced separately.