XM depressurise system

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jimbo
Posts: 21
Joined: Thu Aug 02, 2001 5:21 pm
Location: United Kingdom
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XM depressurise system

Postby jimbo » Thu Feb 28, 2002 6:26 pm

Can anybody tell me the correct procedure for releasing the pressure in the system before working on it. Also can anyone sell me a genuine citroen manual for the 2.0 Si
petrol model any help appreciated.
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NiSk
Posts: 1435
Joined: Thu Jan 24, 2002 9:11 pm
Location: Sweden
My Cars:

Postby NiSk » Fri Mar 01, 2002 3:20 pm

Put the vehicle at service height (height control at lowest level). On the front of the gearbox, just around where it meets the engine, there's a lump of metal supporting an hydraulic sphere (the accumulator sphere). Underneath this lump there is a screw with a 12 mm hex head. This is the hydraulic pressure release screw. Turn it MAX 1 complete turn anticlockwise to release pressure. What ever you do, DON'T undo it, it harbours a strong coil spring and a small ball bearing which is guaranteed to dissapear in the muck on the floor/ground!
The pressure relief screw can be a bitch to get at, I use a suitably shortened tube spanner. On the diesel (which I have) it's almost impossible to identify it from above and of course, if you loosen it from below, you must be able to tighten it again afterwards!
So there are a few things to think about before you start! ( a car lift of inspection pit is a great help).
//NiSk
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