Let's have another doseur discussion

toddao · Post by **toddao** » Tue Sep 02, 2008 12:54 pm

Is it or isn't it? The dreaded doseur..

I've got chronic sink back and front - when I go in the shop for example and come out it's already half way down. My brakes are fine though.I've just put re-gassed spheres on the front ( not to be trusted according to a guy I met at The National) and the back ones are an unknown quantity - though it does bounce accordingly.

I might be relieving Vanny of a doseur that he has but I need to know whether this one - a three cylinder type can be substituted for my early two cylinder type and if so then why are both types still available from Citroen if the later one superceded the previous model..

Any thoughts greatly appreciated. Cheers

Vanny · Post by **Vanny** » Tue Sep 02, 2008 1:53 pm

how new is the LHM? I'd imagine poor spheres and old LHM would have a deciding factor, not to mention leakage in all the now worn hydraulic components. You might find you need to replace everything to get a non sinking back end!

Have you checked wher the fluid is leaking back from at the reservoir? this might giv eyou an idea of where the leak originates!

CitroXim · Post by **CitroXim** » Tue Sep 02, 2008 5:13 pm

Vanny, you have a good point there

My old sinking Xantia (early ones did not have anti-sink) used to sink really fast until I changed the LHM and cleaned the filters. It now stays up much longer that it did, much to my surprise

The old LHM had taken on a distinct yellow twinge after being in there for three years.

Post by **Tim Leech** » Tue Sep 02, 2008 5:20 pm

Todd,
I changed the accumulator sphere and put new LHM in the GT, the result is that it stays up for hours! I fitted a Xantia/XM accumulator sphere (same price).

Worth a go I guess?

toddao · Post by **toddao** » Tue Sep 02, 2008 6:51 pm

Thanks for replies fellas. Yes, it's about time that I changed the LHM.
The accumulator is one year old. I've got to change all the hydraulic pipes too as they are getting a bit rusty.
Maybe I'll make the doseur decision once I've done all the above..

tom · Post by **tom** » Sat Sep 06, 2008 6:54 pm

The posting that Anders placed on my behalf in the sticky stuff up top will be useful to you Todd There are plenty of reasons for sinking but if you have a tick time of 30 seconds or more, then it probably isn't the doseur. Return flow is the only way of knowing for sure.