checking Xantia Sphere pressures

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citroenroen
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Joined: 01 Feb 2023, 03:10

checking Xantia Sphere pressures

Post by citroenroen »

I just purchased new front spheres for my 1997 Xantia V6 Activa : I checked the pressures they came with : 700 PSI / 48 BAR . What are the correct pressures for my Xantia?
I have found a page in french that shows 40/45 BAR but what does that really mean? and then there are 2 numbers beside that :+5 and below that -20 and below that 0.7 in red. I have no idea what the 0.7 in red means.
It seems that 45 + 5 = 50 BARS = 725 PSI.
Furthermore, it seems that 40-20 =20 BAR ?? But that pressure seems too low : so I don't really understand all these numbers.


My last question is that this Citroen diagram shows "montage d"origine" and then " MONTAGE MULTICOUCHES" beside that : I have never seen for sale the multilayered (Multicouches) spheres available anywhere for the Xantia. Are the "MULTICOUCHES" SPHERES available anywhere .

And IF anyone has used the "MULTICOUCHES" SPHERES, what differences in ride and longevity was experienced?

Thank you in advance ...
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xantia_v6
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Re: checking Xantia Sphere pressures

Post by xantia_v6 »

The Series 1 V6 hydractive should have (450/45/0.7) front corner spheres: 450 CC, 45 bar, 0.7 mm bypass hole. I believe that the Activa spheres had the same specification.

Multicouche spheres (if you can find them) have much longer life. I have used them up to 20 years, the ones currently on my XM are about 15 years old and still giving a good ride. When they do go, they go suddenly with a split diaphragm.

Citroen were still supplying multicouche spheres about 5 years ago, but I don't think that is currently true.

For reference the original part numbers are given:
JohnM52 wrote: 07 Jun 2004, 01:17 Hi,
I have listed both the specific part number for the V6 and haev then checked the Cit listing for all other Xantia spheres ( Series 1 only)
having checked the specific part no for V6, I get:
front sphere 5271 76
on checking the listed Xantia spheres:
95 666 857 SPHERE + GASKET
- ESTATE AND WITHOUT HYDRACTIVE SUSPENSION

5271 76 SPHERE + GASKET
- ESTATE AND HYDRACTIVE SUSPENSION
- SALOON AND HYDRACTIVE SUSPENSION AND W/O ACTIVE ANTI-ROLL
5271 C7 SPHERE + GASKET
- SALOON AND HYDRACTIVE SUSPENSION AND WITH ACTIVE ANTI-ROLL


rear sphere for V6 5272 36
listed spheres for Xantia
5272 34 SPHERE + GASKET
- SALOON AND WITHOUT HYDRACTIVE SUSPENSION AND TEMPERATE COUNTRIES
- SALOON AND WITHOUT HYDRACTIVE SUSPENSION AND COLD COUNTRIES

5272 40 SPHERE + GASKET
- ESTATE AND WITHOUT HYDRACTIVE SUSPENSION AND TEMPERATE COUNTRIES
- ESTATE AND WITHOUT HYDRACTIVE SUSPENSION AND COLD COUNTRIES

5272 36 SPHERE + GASKET
- SALOON AND HYDRACTIVE SUSPENSION AND W/O ACTIVE ANTI-ROLL AND TEMPERATE COUNTRIES
- SALOON AND HYDRACTIVE SUSPENSION AND W/O ACTIVE ANTI-ROLL AND COLD COUNTRIES

5272 38 SPHERE + GASKET
- ESTATE AND HYDRACTIVE SUSPENSION AND TEMPERATE COUNTRIES
- ESTATE AND HYDRACTIVE SUSPENSION AND COLD COUNTRIES

5272 42 SPHERE + GASKET
- HYDRACTIVE SUSPENSION AND WITH ACTIVE ANTI-ROLL

Front Hydroactive for V6 5276 09
listed Xantia hydroactive front up to RP 6778
75 520 295 REGULATOR SPHER
- HYDRACTIVE SUSPENSION AND W/O ACTIVE ANTI-ROLL AND TEMPERATE COUNTRIES
- HYDRACTIVE SUSPENSION AND W/O ACTIVE ANTI-ROLL AND COLD COUNTRIES

95 669 124 REGULATOR SPHER
- HYDRACTIVE SUSPENSION AND WITH ACTIVE ANTI-ROLL
- HYDRACTIVE SUSPENSION AND VERY COLD COUNTRIES
- HYDRACTIVE SUSPENSION AND HOT COUNTRIES

listed Xantia hydroactive front SINCE RPO No. 06779 EXCEPT HP20 (AG)
95 669 124 REGULATOR SPHER
- W/O ACTIVE ANTI-ROLL

5276 09 REGULATOR SPHER
- WITH ACTIVE ANTI-ROLL
listed Xantia hydroactive front for HP20 AutoGearbox
5276 09 REGULATOR SPHER
- INJECTION ES9J4 AND HP20 (AG)

Rear Hydroactive for V6 96 045 530
listed for Xantia hydroactive rear up to RP6778

96 045 530 REGULATOR SPHER
- HYDRACTIVE SUSPENSION AND W/O ACTIVE ANTI-ROLL

5276 06 REGULATOR SPHER
- HYDRACTIVE SUSPENSION AND WITH ACTIVE ANTI-ROLL


listed Xantia hydroactive rear SINCE RPO No. 06779 EXCEPT HP20 (AG)


96 045 530 REGULATOR SPHER
- W/O ACTIVE ANTI-ROLL

5276 06 REGULATOR SPHER
- WITH ACTIVE ANTI-ROLL



listed Xantia hydroactive rear for HP20 AutoGearbox

96 045 530 REGULATOR SPHER
- INJECTION ES9J4 AND HP20 (AG)


The Main Accumulator sphere is (as expected) the same for all Xantia - 95 666 763
THe anti sink is listed for all as 5293 03
Hope this is of some use
JohnM