Will a C5 lift its wheels off the ground?

AndersDK · Unread post by **AndersDK** » 02 May 2005, 16:08

Vacuum - where ??

406 V6 · Unread post by **406 V6** » 02 May 2005, 18:10

I'm with Ander's too.
Not very long ago, i had the C5 for wheel alignment, where the car was completely lifted of the ground. The wheels just stayed put on maximum suspension trave, and, when the car was lowered, the suspension had no pressure on the system. If it was to lift up, by now it would already been lifted up by some mysterious forces (the rams are single acting pistons).
As for wheel changing, i goes like normal citroens, i.e., when the car is jacked up on one side on full height, then lowered to normal, the opposite wheel will come up due to the ARB wanting to "straighten up".
Cheers!

bencowell · Unread post by **bencowell** » 02 May 2005, 19:20

I'm tempted to try that, but with my leaking suspension I won't!

ActivaV6uk · Unread post by **ActivaV6uk** » 02 May 2005, 19:27

Thanks Vanny its good to hear it’s not just me! As I said this has happened to me at least 15 times and that’s a bit much to bee a fluke.
as the fluid drains back into the tank a vacuum will build up in the struts so this is ware the vacuum is, the theory worked well enough for me to put it down to that, but if its impossible, I will happily start selling tickets to my back garden as a trip to a parallel universe... (No comments please from the people who have been there lol).
Please not that this isnt somehting that happens imediatly it takes time and at least 1 day in my experiance but the wheels do go back up.
Andy

Unread post by **Thunderbird** » 02 May 2005, 20:17

My Xantia mk2 non-HA behaves exactly as a BX. [:(]

john alexander · Unread post by **john alexander** » 03 May 2005, 00:03

Hi ,if you stand in a bucket can you lift yourself off the ground.

Homer · Unread post by **Homer** » 03 May 2005, 01:37

One side of the car raised - yes.
Both sides raised - no.

ActivaV6uk · Unread post by **ActivaV6uk** » 03 May 2005, 02:06

Sorry guys this isnt a "what if" argument this has been observed.
Andy

Unread post by **Thunderbird** » 08 May 2005, 17:23

I've confirmed this weekend my father's XM mk2 lifts its wheels of the ground! Amazing!
Probably the difference here is that it's hydractive (8 spheres!), as my Xantia mk2 has no electronics or extra-spheres.

fastandfurryous · Unread post by **fastandfurryous** » 08 May 2005, 18:16

How about this as a theory:
With the suspension on max height, there will be a number of rubber bushes deflected, and under some tension. If you put the car on axle stands, and set the suspension to low, the pressure in the suspension cylinders disappears. At this point the rubber bushes (which can impart a fairly large force) provide the force needed to push the wheels back up into the wheelarches. I doubt this would put the wheels right back up into the "low" position, but they would certainly rise back to the "normal" position.

AndersDK · Unread post by **AndersDK** » 08 May 2005, 23:17

<blockquote id="quote"><font size="1" face="Verdana, Arial, Helvetica" id="quote">quote:<hr height="1" noshade id="quote"><i>Originally posted by fastandfurryous</i>

How about this as a theory:
With the suspension on max height, there will be a number of rubber bushes deflected, and under some tension. If you put the car on axle stands, and set the suspension to low, the pressure in the suspension cylinders disappears. At this point the rubber bushes (which can impart a fairly large force) provide the force needed to push the wheels back up into the wheelarches. I doubt this would put the wheels right back up into the "low" position, but they would certainly rise back to the "normal" position.
<hr height="1" noshade id="quote"></blockquote id="quote"></font id="quote">
This is EXACTLY what happens [8)]

SSidhu · Unread post by **SSidhu** » 09 May 2005, 00:24

if you were to raise the car to highest position and then place the
car on 4 stands and then lower the height lever to lowest, the wheels will raise up a few inches but not fully up. Depressurized
right hv tried it many times but only abit...