D Special: LHM leak
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Thread: D Special: LHM leak

  1. #1
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    Default D Special: LHM leak

    Today (after driving the car) I discovered a steady drip of LHM just in front of the rear LHS wheel. Presumably after pressurizing the system the leak emerged, as there was no pool of LHM where the car had been parked for the last week or more.

    I am assuming that I will need to take the rear quarter panel off and remove the wheel to properly work out where the leak is from. Before doing so, can anyone advise on what be the most likely cause or where I should be looking? I am guessing the joins to the rear height corrector and/or suspension sleeve will be foremost candidates? That or a split in the line...

    Al

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  2. #2
    1000+ Posts forumnoreason's Avatar
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    brake cylinder or suspension boots! Take that guard off and jack the car up and whip that wheel off! IF it is the boots replace both sides. good luck.
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  3. #3
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    Finally got round to looking at the source of the problem today. Didn't take much to work it out, even for me. The boot is incorrectly fitted, so that the narrow end on the piston rod faces out, rather than in (if you know what I mean). Any leak from the boot runs down the rod to the ball cup, from where it is dripping.

    Annoying. I should have noticed this before. And the job was done by a so-called Melbourne DS specialist less than a year ago. I'm a bit perplexed as to why it has only started leaking like this now. Maybe they put a clip on which has now fallen off...

    I should go back to them and insist that they do the job properly. That or do it myself...

    AM

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    That's terrible!

    Yet another reason I do all the work on mine!

    Bring it back..


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  5. #5
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    Quote Originally Posted by ajaxvte View Post
    Finally got round to looking at the source of the problem today. Didn't take much to work it out, even for me. The boot is incorrectly fitted, so that the narrow end on the piston rod faces out, rather than in (if you know what I mean). Any leak from the boot runs down the rod to the ball cup, from where it is dripping.

    Annoying. I should have noticed this before. And the job was done by a so-called Melbourne DS specialist less than a year ago. I'm a bit perplexed as to why it has only started leaking like this now. Maybe they put a clip on which has now fallen off...

    I should go back to them and insist that they do the job properly. That or do it myself...

    AM
    Any hints as to which "specialist"?

    Have had bad experiences in last few years

    Currently happy with my non DS , froggy car friendly mechanic, but may need a specialist

    Andrew

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    got a photo of this conundrum Andrew?

  7. #7
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    Maybe, it's taken this long for the boot to fill up to a point where movement compresses it enough to force some LHM out because it's too much for the return line to handle? It might have been fitted correctly, but if the clip let go, it might could possibly have popped out backwards on the rod when fully extended? Are your bump stops good or would they let the arm move just that little further than it should, causing the boot to pull?

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    Quote Originally Posted by David S View Post
    Maybe, it's taken this long for the boot to fill up to a point where movement compresses it enough to force some LHM out because it's too much for the return line to handle? It might have been fitted correctly, but if the clip let go, it might could possibly have popped out backwards on the rod when fully extended? Are your bump stops good or would they let the arm move just that little further than it should, causing the boot to pull?
    Yes, that thought occurred to me thinking about it overnight as well. But the bump stops are good, and I don't see any evidence that the boot may have "popped over" by being over stretched (and the LHS is fine).

    To be fair to the service place, they responded very promptly today when I told them and have offered to rectify the fitting this week.

  9. #9
    Real cars have hydraulics DoubleChevron's Avatar
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    Can you see any evidence of the clamp used. It should really be ligarex as it wont damage the boot. I couldn't imagine a ligarex clamp coming undone ..... The rear arm boots aren't difficult to change if you remember to fit them "inside out"

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  10. #10
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    A mea culpa on my part, in fairness to the Citroen service garage I took the car to today.

    We were able to establish that the incorrectly fitted suspension boot had NOT been of their doing. They had done the other side. I should have noticed, but didn't.

    Nonetheless, they said that they should have seen the problem at the time. They refitted the boot today without charge. They also reinstalled my HP pump, which Roger Parker had rebuilt recently.

    One could cynically suggest that they were just touting for further business, but I think they were being genuine in offering a service beyond what they were obliged to do. Well done, and thanks to them.

    AM

    Quote Originally Posted by ajaxvte View Post
    Yes, that thought occurred to me thinking about it overnight as well. But the bump stops are good, and I don't see any evidence that the boot may have "popped over" by being over stretched (and the LHS is fine).

    To be fair to the service place, they responded very promptly today when I told them and have offered to rectify the fitting this week.
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    I'm not sure I'll take my car to that Ajax Garage then!
    Sounds a bit suss, but I guess he's cheap.

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    Quote Originally Posted by David S View Post
    I'm not sure I'll take my car to that Ajax Garage then!
    Sounds a bit suss, but I guess he's cheap.
    Well it wasn't me, if that's what you mean! I do know who it was now, but no point blaming others for something I should have noticed a year ago...

  13. #13
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    Do you think it was fitted the right way around and the clip let go or there was no clip? Or was the boot fitted as you found it?

    It does seem the logical way to fit it without the turn back inside if you weren't entirely sure and it would seem to extend the free length. However, if you take a new boot and try to push the small end in, it tends to crumple and buckle unevenly. When it's turned back inside, it rolls back and forward very neatly, so there was method in the apparent madness. Possibly a throwback to the Six-H as the rear end carried over to the DS/ID largely unchanged. Oddly, at the front we find a typical convoluted boot and later models had this at the rear too.

    p.s. Beware the repro boots (and repro rubber in general). Some of them tend to split after a couple of years, regardless of use. It's still sold as a genuine part, so that's probably the one to buy if replacing at the rear.

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