air horn question
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  1. #1
    Fellow Frogger! rmac's Avatar
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    Default air horn question

    The air horns fitted to a CX have a compressor with an oil hole covered with a cap. When I up end the compressor with my finger over the oil hole there is no trace of any oil.

    What type of oil should I put in and how much please?

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  2. #2
    Fellow Frogger! Techbuy's Avatar
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    Quote Originally Posted by rmac View Post
    The air horns fitted to a CX have a compressor with an oil hole covered with a cap. When I up end the compressor with my finger over the oil hole there is no trace of any oil.

    What type of oil should I put in and how much please?

    I have not seen any recommended oiling anywhere, so i just did this.

    A couple of drops of sewing machine oil about once a year and it seems to keep it going.
    Cheers

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  3. #3
    Real cars have hydraulics DoubleChevron's Avatar
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    Yeah any lightweight oil will do. To be honest it's the trumpet side I find play up. Fill them with inox and let them rip ..... (the horns that is) and they come good. Of course I didn't hook them to the air compressor and use 120psi to do this (don't forget your ear muffs............ damn there loud!!!).

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  4. #4
    VIP Sponsor richo's Avatar
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    I've been using a few drops of LHM, it seems fitting and works.

    Pneumatic tool oil is probably the pedant choice.

  5. #5
    UFO
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    CitroŽn Tragic UFO's Avatar
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    I found that clearing the trumpets with a compressor can be, well, interesting. The neighbours at XM Driver and XM Mechanics must have thought a train was coming through their back fence!
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  6. #6
    Too many posts! JohnW's Avatar
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    Quote Originally Posted by rmac View Post
    The air horns fitted to a CX have a compressor with an oil hole covered with a cap. When I up end the compressor with my finger over the oil hole there is no trace of any oil.

    What type of oil should I put in and how much please?
    I have a spare if you are desperate.
    JohnW

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    CitroŽn CX Pallas 1980 (moved on to new custodian)

    National Co-ordinator, Renault 4CV Register of Australia

  7. #7
    Fellow Frogger! rmac's Avatar
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    Thanks for the offer John. I'll see how this one goes after I put a few drops of LHM.

    Thanks for the suggestions from everyone. I'll go with Richo's idea - have it close to hand.
    Current Cars
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    1981 Citroen CX 2400ie Super Familiale C-matic - Raid Arctique 2014
    1991 Mazda E2200
    1924 Citroen 'la petit citron'

  8. #8
    1000+ Posts arunine's Avatar
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    LHM dissipates very rapidly so is of no use. I had a slight leak on my friends driveway and in 3 days there was no trace of it.
    DS 21
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  9. #9
    VIP Sponsor richo's Avatar
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    arunine
    Would you consider comparing your friends driveway with a compressor bushing to be a realistic analogy?
    The LHM will be taken up by the bushing due its relatively low viscosity.

    Ross, a few drops of LHM once a year, or when I think of it has worked for the past 5 years or so.
    It was not working prior to the LHM application. I've pneumatic oil for air tools on hand, if I prefered its application.
    I would not recommend LHM as a cure all, simply a working whimsy.
    Last edited by richo; 6th December 2011 at 10:44 AM.

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