V70 2.4 L5-2.4L VIN 61 B5244S (2001)
Legend
1- Rotor
2- Distancer
3- Outer wall
4- Safety valve
5- Control valve
The pump rotor has 10 loose laminated vanes and rotates in a ring shaped distancer. The laminated vanes are pressed against the walls of the distancer
by centrifugal force and oil pressure.
The area of inside the distancer is oval, see A in illustration. Because of this the space between the rotor, distancer wall and two of the vanes changes
when the rotor rotates.
When a pair of vanes move from the suction side to the pressure side the space between them increases and oil is sucked in.
The vanes move onto the pressure side. The gap between the vanes decreases at the same time the pressure increases and the oil is forced out into the
delivery pipe.
There are two suction and pressure channels that gives the pump double capacity.
Control valve
Legend
1- Delivery pipe
2- Throttle valve
3- Pressure channel
4- Return channel
5- Control valve
6- Safety valve
7- Spring
8- Connecting channel
There is a control valve in the pump housing which regulates the oil quantity and maximum pressure.