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Citroen hydraulics - Khamsin, Bora, early Merak, late Indy

Discussion in 'Maserati' started by thecarnut, Jan 11, 2009.

  1. boralogist

    boralogist Formula Junior

    Jun 21, 2005
    433

    http://www.bridgeclassiccars.co.uk/bleeding-merak-lhm-system/
     
  2. 71Satisfaction

    71Satisfaction Formula Junior

    Jul 15, 2012
    695
    New York and Norway
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    Art
    #177 71Satisfaction, Mar 10, 2019
    Last edited: Mar 10, 2019
    Glad you got it working, even if there isn't clarity in what was going on.

    In the diagram I see an ambiguity in the representation of the system - the gap between line number 52 and fitting number 121 - but if those are connected, then there is a pressurized connection to the clutch MC #51 and if you are getting anything green, it's definitely LHM.
    The clutch MC must be more of a valve that pressurizes the slave to release the clutch.

    Learn something new every day.
    - Art
     
  3. staatsof

    staatsof Six Time F1 World Champ
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    Mar 13, 2005
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    Bob
    I wonder if the rare Indys with LHM have a similar clutch circuit?
     
  4. Froggie

    Froggie Karting

    Sep 27, 2017
    164
    Belgium
  5. 71Satisfaction

    71Satisfaction Formula Junior

    Jul 15, 2012
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    Art
    Homage to Jarvik. Some loss of LHM was inevitable, but otherwise the surgery was uneventful, and the patient is recovering well...
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  6. staatsof

    staatsof Six Time F1 World Champ
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    After doing that job you do wonder why they couldn't used the screw in style? Maybe there's a reason?

    Are those new or rebuilt?
     
  7. 71Satisfaction

    71Satisfaction Formula Junior

    Jul 15, 2012
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    Art
    Carter at Dave Burnham Citroen rebuilt them overnight.

    The procedure went pretty smoothly:
    - Back off the 13mm nut 4-5 turns, located on the distribution block above the main accumulator.
    - Cycle the headlight doors until there's no pressure.
    (- Get some rags and a small glass container to catch the LHM - there was still pressure to squirt the stuff out of the fittings in the next step..)
    - Loosen the flared-pipe fittings at each of the two Spheres (use a combination of 10mm, 14-15mm and 9/16" wrenches).
    - Loosen the 10mm lock nuts on hold-down armature.
    - Wrestle the armature and Spheres out.
    - Rebuild and repaint the Spheres (if one of them leaks, rebuild both while you're at it).
    - Reinstall Spheres.
    - Tighten the 13mm nut above the main accumulator.
    - Start engine, rev a little to run the compressor.
    - Actuate brakes, check for leaks.
    - Drive to Cars & Coffee.

    Cheers,
    - Art
     
  8. staatsof

    staatsof Six Time F1 World Champ
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    Mar 13, 2005
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    Well that's great Dave. Over the years a number of folks have had issues with those special Maserati only fittings leaking. It's been eons since I did this.

     
  9. thecarnut

    thecarnut Formula 3

    Apr 22, 2006
    2,306
    Atlanta
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    The Car Nut
    Most leaks are cause by overtighting the flare fittings and not the special adapters themselves. Best not to disturb the adapters as they are very brittle and will break even if you are careful (ask me how I know). On the body of the pressure regulator is a hex bleed nut that can be briefly opened while the engine is running to let trapped air escape. The bleed nut is opened with a 12mm wrench.
    Ivan
     
  10. boralogist

    boralogist Formula Junior

    Jun 21, 2005
    433
    Hi Art---

    Perfect protocol.
    Love it.

    Regards.
     
  11. 71Satisfaction

    71Satisfaction Formula Junior

    Jul 15, 2012
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    Art
    My pleasure. One added step at the very end:
    - Bleed the brakes if they feel a bit soft or indicate the Low Pressure light..

    Mine felt 10% soft but didn't trigger the Low Pressure light to blink. I drove the Bora a couple of weeks, then decide to bleed the brakes and found just a bit of air. Now the brakes are 100%.

    Cheers,
    - Art
     
  12. richjar

    richjar Karting

    Oct 20, 2009
    246
    Hello All,
    Hope you are all well??
    Its been a whilst since I last logged on...

    I have a little problem which I am finding difficult to resolve...
    My LHM head light switch has a leak which I cant seem to stop. It has reduced to a small seep now with new seals in.

    Has anyone else had this problem, are there any spare parts available. The part number is Bosch 0 523 200 052.
    Is there anywhere which can overhaul and test these switches?
    Thanks all
    Rich
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  13. boralogist

    boralogist Formula Junior

    Jun 21, 2005
    433
    Talk to Maurice---in New Zealand!


    Owns yellow Bora---
    Perfect gentleman---the ONLY hydraulics guy I trust.

    Regards.
     
    71Satisfaction, 010 and richjar like this.
  14. merak81ss

    merak81ss Rookie

    Sep 4, 2012
    1
    ----------------------------------------------------------------------------------------
    Hello Villard
    Can you send me the contact details of French distributor of Maserati parts, European equivalent of MIE ?

    Regards
    Charles
     
  15. paulchua

    paulchua Cat Herder
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    Jul 1, 2013
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    Threads Merged as requested
     

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