CITROEN XANTIA User Manual page 261

ALL TYPES
Carry out the following operations
7 Switch on the ignition.
Establish a pressure of 150 to 180 Bars if the vehicle is on stands :
8
raise the wheel(s) concerned.
Open the bleed screw of the pump 4135-T or 4034-T, remove the
9
tools.
DE-PRESSURISING THE SUSPENSION CIRCUITS (continued)
254
Consequences
The electrovalves of the hydractive regulators are energised.
The suspension spheres + hydractive regulator accumulators are
de-pressurised.
The supply circuit is de-pressurised.