Andmcit
December 15, 2008 07:05 pm
Very late in proceedings here but can cut/paste a description of a Xantia strut top swap
here where the piccies should help paint a clearer picture as the Xantia and Xm principle
is the same - YES John, the Xm design IS better though!!

Oh dear - failed strut top on my parked Activa earlier this year.

The sphere bracket crown was as rotten as a peach on close scrutiny where
I tugged all the rubberised covering off the underside, yet to look at it without
actual prodding it all 'looked fine'. The giveaway had I taken the trouble to be
more thorough was the paint lifting on the topside ledge which flaked away in
big swathes to reveal a less than happy more regularly found bobbly rusty surface.
This is the car as I managed to leave it outside my work with the system
fully depressurised - the bonnet is scrap but is still managing to just about
stop the weather getting into the engine bay.

As has been mentioned earlier, in a nutshell you basically have to remove
everything connected to the 'sphere mounting bracket' or strut top; the fluid feed
pipe and it's clip/bracket, the main corner sphere and then you need to undo the
big nut on the crown that holds the end of the strut's inner ram against a taper
inside the strut top.

sphere wrench from GSF:

The big nut of the top is usually very tight; here the whole strut head
swung around and round as it'd totally broken/separated off the wheelarch
- I had to put the sphere back on hand tight to brace it against the
surrounding engine bay fitments:


The next bit is my dodge to knock the inner piston downwards into the
main body - I've learned the hard way in the past that the thread on it's
end can be burred over if you're not careful hitting it as there's not much
to see or hold the nut - I usually have another identical nut to take up the
depth of a socket that I can then give a short sharp tap against - here I
used a small adapter from the socket set - the allan key head in the piston
end allows the nut to be threaded off if it catches and just turns:

You then need a long bar with a slim diameter to compress the inner piston
downwards into the main strut body which will eject a fair bit of fluid about
the place and you could keep the main hydraulic feed connected until after this stage:

The broken head was loose to simply lift out here though it would normally
be connected to the donut/collar attached to the wheelarch if it's still in one piece
- chance would be a fine thing...
you can see here the top face of the LHM covered bump stop:

- part 2 below!!