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Thread: Low pressure port

  1. #1
    Join Date
    Nov 2010
    Location
    San Jose, CA
    Posts
    38
    My Cars
    1987 BMW M6 E24

    Question Low pressure port

    Hi,
    Please let me ask everyone. I searched on this Bimmerforum but could not find the right thread.
    Now I am checking all of A/C related part and wondering where is the low-pressure port of BMW e24 635 and M6?
    Thank you in advance!

  2. #2
    Join Date
    Aug 2010
    Location
    West Nyack, New York
    Posts
    1,391
    My Cars
    86 635csi 98 740i 96 MB

  3. #3
    Join Date
    Nov 2010
    Location
    San Jose, CA
    Posts
    38
    My Cars
    1987 BMW M6 E24
    Thanks 1986series6!
    I think I found the port.
    Screen Shot 2018-09-21 at 18.13.32.png

  4. #4
    Join Date
    Nov 2010
    Location
    Santa Ana, CA USA
    Posts
    984
    My Cars
    1988 m6
    Toki,

    If you want to know the thread sizes on the top of Wingcell compressor, for the hoses to attach to.
    The larger intake thread size is 3/4" x 14 TPI, its not metric, Edit (low pressure)
    The smaller output thread size is 1/2" x 16 TPI, Edit (high pressure)

    I have a rebuild service for the Wingcell's

    Best,
    Last edited by master6; 09-25-2018 at 10:15 AM.
    Jay
    '88 M6 Cinnabar Red / Nappa Natur Highline Interior (10-87) Santa Ana, California. USA

    My NEW Website, Link : https://www.jaysbmwparts.com

    Booster repair
    https://www.jaysbmwparts.com

    A/C Wingcell Compressor leak repair
    https://www.jaysbmwparts.com

    e31 Door Handle Fix,
    https://www.jaysbmwparts.com

  5. #5
    Join Date
    Oct 2004
    Location
    Lou. Ky.
    Posts
    3,252
    My Cars
    87-635 '78-R80/7 '96-960
    If I'm right the low pressure suction line is the larger AC line where the smaller line is the high pressure line. If adding freon be certain to only fill using the suction line. High pressure can burst the freon can causing injury.

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