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Thread: #6 & #12 Donuts Remove Help

  1. #1
    Join Date
    Nov 2018
    Location
    Springfield, VA
    Posts
    17
    My Cars
    1991 BMW 850i

    #6 & #12 Donuts Remove Help

    Today I tried to exchange the spark plug wires. However, I almost pull out my hairs for these two donuts removal. Can someone help me that? Thanks a lot.

    1. P5: How can I remove the covering plate under oil filter cap? If I don't remove the plate, is it still possible to pull out the donuts? I find the donuts are very difficult to pull it out without removing the plate.

    2. P6: I tried to remove the rotor too. However, I ruined the hex screw hole because the screws are stick on the plate. Right now the hex wrench can't move them at all. Any way I can do it now?

    Any suggestions are much appreciated!
    Attached Images Attached Images

  2. #2
    Join Date
    Dec 2006
    Location
    Sunny Cali,
    Posts
    8,730
    My Cars
    6.5 second 69 Camaro
    Just slide it towards you, May take a small yank, use both hands, Thumbs on top.

  3. #3
    Join Date
    Jun 2008
    Location
    SF Bay Area
    Posts
    3,801
    My Cars
    Supercharged 850ci
    The struggle is real.
    Just pull the plate towards you. Mark the plugs for re install later cause you might mix them up.
    Use locking pliers on stripped bolts.
    Go slow.

    Sent from my SM-G892U using Tapatalk

  4. #4
    Join Date
    Aug 2007
    Location
    San Francisco, CA
    Posts
    1,570
    My Cars
    1972 3.0 CSi-1988 M6
    Donut and crank position sensor plugs orientation- facing from front of car:
    Bank 1 donut sensor (pass.)- bottom left
    Bank 2 donut sensor (driv.) - top right
    Upper cps - top left
    Lower cps- bottom right

    Used a small short hex wrench? A long shank or t-handle hex wrench will work much better than the shorter ones. Breaking loose a ‘stuck’ bolt becomes much easier due to better leverage/torque provided by the longer handle. As stated already by dragon850, your best bet now is to use a medium size toothed locking pliers for the stripped hex bolts.
    Bert
    91 850i-A
    1972 3.5 CSi (L-jet, Getrag 265 5 speed)
    1988 ///M6
    2021 X3 M40i

    The back to back BIG COUPE” duo

  5. #5
    Join Date
    Nov 2014
    Location
    Seattle
    Posts
    66
    My Cars
    1985 M635CSI, 1992 850i
    I had luck using a 1/8" hex socket attachment for my ratchet wrench.
    I used a small hammer to tap the socket attachment into the stripped holes.
    There are numerous threads on here that discuss the procedure involved in removing and replacing the donut (or cam position) sensors. Pay close attention to the instructions for removing and replacing the wire ends and boots.

  6. #6
    Join Date
    Nov 2018
    Location
    Springfield, VA
    Posts
    17
    My Cars
    1991 BMW 850i
    I did it. Thanks a lot for all your help. Happy Lunar New Year!

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