Citroen hydraulics - Khamsin, Bora, early Merak, late Indy | Page 8 | FerrariChat

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

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

This site may earn a commission from merchant affiliate links, including eBay, Amazon, Skimlinks, and others.

  1. boralogist

    boralogist Formula Junior

    Jun 21, 2005
    998

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

    71Satisfaction Formula 3

    Jul 15, 2012
    1,219
    New York and Norway
    Full Name:
    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 Nine Time F1 World Champ
    Silver Subscribed

    Mar 13, 2005
    91,385
    Fuggetaboutitland
    Full Name:
    Bob
    I wonder if the rare Indys with LHM have a similar clutch circuit?
     
  4. Froggie

    Froggie Formula Junior

    Sep 27, 2017
    476
    Belgium
    Full Name:
    Serge
  5. 71Satisfaction

    71Satisfaction Formula 3

    Jul 15, 2012
    1,219
    New York and Norway
    Full Name:
    Art
    Homage to Jarvik. Some loss of LHM was inevitable, but otherwise the surgery was uneventful, and the patient is recovering well...
    Image Unavailable, Please Login
     
  6. staatsof

    staatsof Nine Time F1 World Champ
    Silver Subscribed

    Mar 13, 2005
    91,385
    Fuggetaboutitland
    Full Name:
    Bob
    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 3

    Jul 15, 2012
    1,219
    New York and Norway
    Full Name:
    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 Nine Time F1 World Champ
    Silver Subscribed

    Mar 13, 2005
    91,385
    Fuggetaboutitland
    Full Name:
    Bob
    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 F1 Rookie
    Rossa Subscribed

    Apr 22, 2006
    3,008
    Atlanta
    Full Name:
    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
     
    71Satisfaction likes this.
  10. boralogist

    boralogist Formula Junior

    Jun 21, 2005
    998
    Hi Art---

    Perfect protocol.
    Love it.

    Regards.
     
  11. 71Satisfaction

    71Satisfaction Formula 3

    Jul 15, 2012
    1,219
    New York and Norway
    Full Name:
    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 Formula Junior

    Oct 20, 2009
    250
    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
    Image Unavailable, Please Login
     
  13. boralogist

    boralogist Formula Junior

    Jun 21, 2005
    998
    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
    Lifetime Rossa Owner

    Jul 1, 2013
    15,983
    Menlo Park, CA
    Full Name:
    Paul Chua
    Threads Merged as requested
     
  16. series1

    series1 Karting

    Apr 10, 2007
    125
    Leamington Spa
    Full Name:
    Mark Butler
    Hi There, Just stumbled across this thread... Does anyone know a source for the small bore flexible hydraulic lines. I need to replace the two that go to the headlamp switch.

    Thanks
     
  17. thecarnut

    thecarnut F1 Rookie
    Rossa Subscribed

    Apr 22, 2006
    3,008
    Atlanta
    Full Name:
    The Car Nut
    Those are a Bosch part and were also used on the Mercedes 600. Try this website: https://www.woerle-fahrzeugtechnik.com/en/content/133/96/restoration/comfort-hydraulics
    I have never used this company. Let us know of your experience if you decide to use them.

    Ivan
     
  18. barnfieldman

    barnfieldman Rookie

    Apr 18, 2006
    45
  19. series1

    series1 Karting

    Apr 10, 2007
    125
    Leamington Spa
    Full Name:
    Mark Butler
    Perfect thanks for that. I will follow those up.
     
  20. 71Satisfaction

    71Satisfaction Formula 3

    Jul 15, 2012
    1,219
    New York and Norway
    Full Name:
    Art
    Just to share an interesting Citroen/Maserati hydraulic story -
    At a car show this May with our Khamsin, a young local man introduced himself and said his father had bought a '72 Indy 4.9 at auction late last year and was in the process of recommissioning it..

    We talked and, as I looked up information on the Indy with my smartphone, I said I assumed the '72 was an early enough model year it didn't have Citroen hydraulics. He said "Actually, it has the Citroen hydraulics. It wasn't delivered that way, but was retrofitted with it."

    I don't think I've heard of an owner retrofitting the hydraulics *into* a Maserati, at least here in the US.
    - Art
     
    Nembo1777 likes this.
  21. Froggie

    Froggie Formula Junior

    Sep 27, 2017
    476
    Belgium
    Full Name:
    Serge
    You see, people like the green stuff ;)
     
    Nembo1777 and 71Satisfaction like this.
  22. staatsof

    staatsof Nine Time F1 World Champ
    Silver Subscribed

    Mar 13, 2005
    91,385
    Fuggetaboutitland
    Full Name:
    Bob
    I missed the point where the Khamsin became yours as opposed to your fixing it for a friend? Was this one of Mike's cars?
     
    71Satisfaction likes this.
  23. Nembo1777

    Nembo1777 F1 World Champ
    Silver Subscribed

    Nov 4, 2006
    10,147
    opposite lock
    Full Name:
    Marc Sonnery
    #198 Nembo1777, May 30, 2021
    Last edited: May 30, 2021
    Here is your clue;-)

    The silver car is Art's, since last September when I procured it to him from the previous owner, Andrew, also in New York state. The blue one he takes care of for a friend. Art took these beautifully composed photos.


    Image Unavailable, Please Login
     

    Attached Files:

    • 2.jpg
      2.jpg
      File size:
      114.1 KB
      Views:
      101
  24. am117au

    am117au Karting

    Apr 22, 2014
    222
    Sydney Australia
    Full Name:
    Greg G
    He is the only one i trust to work on my LHM components...
     
  25. Froggie

    Froggie Formula Junior

    Sep 27, 2017
    476
    Belgium
    Full Name:
    Serge
    Here is an interesting testimony on the resistance to fading of the LHM braking system.
    That comes from Paul Frère, a famous belgian automotive journalist, well acquainted with Guy Malleret at that time.
    The original statement is in french, here under is a free translation:

    "Mr. Malleret, the Managing Director of Maserati, lent me a Bora for a weekend and I used it a lot on the narrow, winding mountain roads, in the Apennines and on the highways.

    What makes this automobile quite remarkable is that it really excels in these two conflicting operating conditions, being quite agile in the former and both stable and relatively quiet at 225-235 (true) km / h. , which appears to be the natural cruising speed on highways without traffic.

    If I had remembered that the Motor magazine had been unable to time its test car accurately, I would have attempted a race in both directions, but I confirm that the estimate around 260 km / h is a fair enough good guess.

    But what perhaps impressed me the most were the brakes, actuated by the Citroën high pressure system and incorporating ventilated discs on all four wheels. Since the car weighs more than 1.5 tonnes, what they took on the mountain roads where I drove, without losing any of their efficiency and their progressiveness is quite incredible ... "
     
    71Satisfaction likes this.

Share This Page