Vauxhall Workshop Service and Repair Manuals

High-pressure pump - Z 13 DT DOHC diesel engine

The Z 13 DT DOHC diesel engine is fitted with the CP 1 high-pressure pump from Bosch.

This enables the pressure accumulator to reach a maximum pressure of 1400 bar.

The task of the high-pressure pump is to make the required system pressure available in the pressure accumulator. For the high-pressure pump to work an admission pressure of (2...4) bar is required which is generated by an electric fuel pump in the tank in accordance with the ignition timing adjustment.

The high-pressure pump is mounted on the cylinder head on the transmission side and is driven by a camshaft.

1. High-pressure pump

•  Service:
The Common Rail system of the Z 13 DT engine does not need to be bled after assembly. It is self-bleeding through the electric fuel pump in the tank.

Diagram of high-pressure pump

Front view Side view 1 Pump feed 8 Cage 2 Pump plunger 9 Thrust rings 3 Cylinder head 10 Pump housing 4 Pump cylinder 11 Flange 5 Shaft seal ring 12 Eccentric shaft 6 Cage 13 Plate holder 7 Ball 14 Polygonal ring