CITROËN ID 19, Repair Manual, Page: 23 / 482

ID 19 OPERATION No. ID 00 : Hydraulic system 21
IMPORTANT NOTE
If any irregularity of working occurs make certain that the hydraulic system is under pressure before doing anything else. To do this:
With the engine idling :
- Unscrew the bleed screw on the pressure control valve (one should be able to hear the release of pressure in the control valve).
- Screw up the bleed screw and the valve should cut out in less than 60 seconds (the point of cut out is indicated by a reduction in
the noise of operation).
If the above is not the case, check in the order shown, the following points:
- That there is sufficient hydraulic fluid in the reservoir.
- That the filter in the reservoir is perfectly clean and in good condition.
- That air is not being sucked in through the pump inlet pipe.
- That the bleed screw has been screwed up.
TOOLS
IMPORTANT NOTE – For correct functioning of the hydraulic system, it is essential that the fluid and the units
of the hydraulic system should be perfectly clean. The strictest precautions must be observed during work
on the car and for the storage of the fluid and spare parts.
1 Storage
Pipes, units and spare parts must be protected from exposure to dust and from impact.
Seals and rubber pipes must be protected from exposure to dust, air, light or heat.
The fluid must be kept in its original container, securely sealed.
2 Precautions during work.
Before starting work, carefully wash the area in which work is to be carried out.
Example:
when replacing a rear suspension cylinder, wash the wheel arch.
Before disconnecting a union, carefully wash it and the surrounding area with alcohol.
Then proceed as follows :
a)
Unscrew the bleed screw on the pressure regulator.
b) Move the manual height control lever to the low position.
NOTE - These precautions should be observed during work on the master cylinder (2nd position).
3 Precautions to be taken after disconnecting a union.
Seal all open ends of pipes and oil passages with plugs (see Pl. 89, fig. 9 ):
a)
Metal pipes with screw connections.
3 mm dia. . . . . . . . . . . . . . . . . . . . . . . . . . . . . plug D 435-91
4. 5 mm dia. . . . . . . . . . . . . . . . . . . . . . . . . . . . . plug D 453-131
6.35 mm dia . . . . . . . . . . . . . . . . . . . . . . . . . . . . plug D 453-132
8 mm dia. . . . . . . . . . . . . . . . . . . . . . . . . . . . . plug D 391-60