XM ACCUMULATOR SPHERE

Post by **Tim Leech** » Sat Feb 13, 2010 12:13 pm

Im wanting to fit the bigger XM accumulator sphere to my TZI as the pumps a bit tired, does anyone have a part number for GSF please?

Thanks

ken newbold · Post by **ken newbold** » Sat Feb 13, 2010 1:33 pm

Should be on here somewhere

http://oto.to/schematy/citroen_kule.pdf

Post by **Tim Leech** » Sat Feb 13, 2010 1:53 pm

N45322? is that the right one?

Thanks

ken newbold · Post by **ken newbold** » Sat Feb 13, 2010 2:22 pm

No I don't think so.

Looks like 400/50/0.60, to me.

Not sure fitting a new accumulator will help your problem

jonathan_dyane · Post by **jonathan_dyane** » Sat Feb 13, 2010 2:44 pm

It's not an XM accumulator you want, it's a hydractive XM front center sphere N45322.

I doubt it will cure intermittent PAS tho...

Post by **Tim Leech** » Sat Feb 13, 2010 4:14 pm

jonathan_dyane wrote:It's not an XM accumulator you want, it's a hydractive XM front center sphere N45322.

I doubt it will cure intermittent PAS tho...

PAS works fine, as does everything else once its running, just that the rear end sits down quickly and takes a while to rise when cold. The accu spheres tired anyway so though about fitting a bigger one.

Post by **Defender110** » Sat Feb 13, 2010 4:45 pm

I put the XM sphere on mine last year because the 'clicking time' was down to every 3 seconds, the new sphere improved this dramaticaly to every 15-18 seconds so I assume the pump must be tired and would need replacing to get the 30 seconds quoted by others?

Post by **Tim Leech** » Sat Feb 13, 2010 8:31 pm

15/18 would be a start until I can sort a new pump, where did you get it from mate?

Post by **Defender110** » Sat Feb 13, 2010 9:56 pm

Tim
Have you got an old standard one that I could swap it out for and I'll send it you FOC before it goes to scrappage, as stated it was new last year?

Aerodynamica · Post by **Aerodynamica** » Sun Feb 14, 2010 6:20 pm

Tim, I'm with Ken Newbold on this one - I don't think you'll see any improvement by changing the sphere as the system will still run at the same pressure - sure, you'll get a larger (tiny amount) extra reserve of LHM in the accumulator by fitting a 500cc size item IF the gas pressure is the same or a teeny bit lower.

Rapid suspension sinking is down to LHM internal leakage! I am certain this has been covered at length in the past.

You'll find the best result is from your new HP pump and additionally, reshimming your pressure regulator and reseating the check valve.

Anyway, the sphere can't do any more work on the suspension etc than the pump puts into it - can't get something from nothing!

Post by **Tim Leech** » Sun Feb 14, 2010 8:20 pm

Defender110 wrote:Tim
Have you got an old standard one that I could swap it out for and I'll send it you FOC before it goes to scrappage, as stated it was new last year?

Err I dont buddy no sorry, thanks for the offer anyway, if you were nearer I would ride up and we could do a swopsie but as shes not a frugal old girl it would cost more in petrol than the sphere.

Post by **Tim Leech** » Sun Feb 14, 2010 8:21 pm

Aerodynamica wrote:Tim, I'm with Ken Newbold on this one - I don't think you'll see any improvement by changing the sphere as the system will still run at the same pressure - sure, you'll get a larger (tiny amount) extra reserve of LHM in the accumulator by fitting a 500cc size item IF the gas pressure is the same or a teeny bit lower.

Rapid suspension sinking is down to LHM internal leakage! I am certain this has been covered at length in the past.

You'll find the best result is from your new HP pump and additionally, reshimming your pressure regulator and reseating the check valve.

Anyway, the sphere can't do any more work on the suspension etc than the pump puts into it - can't get something from nothing!

Cheers graham, the pump I could about manage but the rest is beyond me, guess I will have to manage for now until I can afford/find a decent pump for a petrol BX.

maxgreenwood · Post by **maxgreenwood** » Tue Feb 16, 2010 11:47 pm

i need to replace the acc sphere on my BX, GSF didn't have any but had XM/Xantia ones, so i got one of those. i'd heard there was some small advantage in fitting an XM acc sphere. It's not fitted yet, they actually said XM one was same as Xantia... but have i got it wrong? should i be looking at an XM centre?

RxBX · Post by **RxBX** » Wed Feb 17, 2010 12:40 am

Hi Max,

maxgreenwood wrote:i need to replace the acc sphere on my BX, GSF didn't have any but had XM/Xantia ones, so i got one of those. i'd heard there was some small advantage in fitting an XM acc sphere. It's not fitted yet, they actually said XM one was same as Xantia... but have i got it wrong? should i be looking at an XM centre?

Accumulator spheres (Standard fitment) !
For ALL :- CX,GSA,BX, XM & Xantia applications are all the same 400cc in volume, with 62 BAR of pressure (When new/fully charged) in them and have NO valve's to regulate the LHM flow to/against the diaphapm within the sphere chamber !

I hope this maybe of help !

RxBX

Post by **Tim Leech** » Wed Feb 17, 2010 9:59 am

Are diesel and petrol HP pumps different then? GSF do offer new ones at £150 but they list one size fits all, I was hoping to pay a bit less than that!