I sent this pic earlier in an other thread. I hope it'll help until you get the "real" pic.
You have #
3 which must be fitted to #
6 plastic clip, the front one.
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Caution:
Be careful when working under the car and dealing with suspension parts!
There is almost an official warning about this but I can't find it.
May be someone will add it here.
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Edit: I found it
myglaren:
"As always, prior to starting any work that involves getting underneath a Xantia, or any Citroen with hydraulic suspension, make absolutely certain that the car is firmly supported on axle stands or ramps. This is particularly important when working on the suspension system hydraulics, the car can drop very suddenly with fatal results."
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Also check this thread for some pics and instructions
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Cleaning a Xantia front and rear height corrector