Earlier this year, I had the suspension spheres on my 1970 Citroen DS checked for pressure. The ride had become pretty terrible, so it was obvious there was a problem. We were able to successfully regas the fronts, but one of the rears was completely dead. It was time for some rebuilt rear spheres. My mechanic sent them away to Pleiadies in Queensland. They...
The Citroen DS is known for the quality of its ride. The books use epithets such as ‘Magic carpet ride’. There is a bit of puffery in that statement, but the sentiment is right – the ride is normally very good. Recently my DS has become the worst riding car that I own. Something was clearly wrong. The biggest impact on ride quality...
Today I attended a Citroen Car club tech day. Since most Citroens are equipped with hydropneumatic suspension, the club has equipment to pressure test spheres. It has been five years since I tested my spheres, so they were well overdue. The sphere pressure check equipment consists of a hand pump and pressure gauge. The club is also equipped with re-gassing facilities, although those were...
Central to the Citroen DS hydraulic system is a set of ‘spheres’ that hold hydraulic pressure. The spheres have an internal diaphragm so they can contain gas on one side and hydraulic fluid on the other. One is used for each wheel to provide the suspension, as the gas forms the ‘spring’ and the amount of fluid in the sphere controls the ride...
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