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Thread: Problems pressing in rear subframe mounts - any suggestions?

  1. #1
    Join Date
    Jan 2004
    Location
    Sydney, Australia
    Posts
    104

    Default Problems pressing in rear subframe mounts - any suggestions?

    I got my new Lemforder rear subframe mounts from Patrick at BMA. I had to cut the old ones out. I removed the centre bolt, and cleaned up the subframe housing using a wire brush on a drill. All looks clean. I am trying to press the new ones in using a jack, a peice of timber and water as the lubricant without any joy. I now have the mount halfway in, and it wont go any futher (and now I can't get it out either!)

    Once I get it out, any suggestions on lubricating or trimming the mount?

    Thanks

    John - 535is Sydney

  2. #2
    Join Date
    Mar 2004
    Posts
    404

    Default

    Try liquid dish washing detergent.

    Paul Shovestul


    Quote Originally Posted by John 535is (Sydney)
    I got my new Lemforder rear subframe mounts from Patrick at BMA. I had to cut the old ones out. I removed the centre bolt, and cleaned up the subframe housing using a wire brush on a drill. All looks clean. I am trying to press the new ones in using a jack, a peice of timber and water as the lubricant without any joy. I now have the mount halfway in, and it wont go any futher (and now I can't get it out either!)

    Once I get it out, any suggestions on lubricating or trimming the mount?

    Thanks

    John - 535is Sydney
    .....Got to keep the loonies on the paath.

  3. #3
    Join Date
    Dec 2003
    Location
    Eastern Tennessee USi
    Posts
    14,839

    Default

    what an ugly spot you are in...hope you can wiggle that sucker back out!
    95 E34 530I V2.37
    ===========
    Those who make peaceful revolution impossible will make violent revolution inevitable.

    John F. Kennedy

  4. #4
    Join Date
    Jan 2004
    Posts
    4,150

    Default IF you do use dish washing detergent only use a very small

    amount diluted with a large amount water. Some people who have use straight liguid detergent have had problems with the bushing not staying in place. Bmw only recomends circolight, a rubber lubricant that is competely absorbed into the rubber a few minutes after its pressed in... P80 listed here is the same thing as circolight.

    These are both rubber lubricants designed to absorb completely into the rubber that the bushing stays in place once its pressed . Using other lubricants that stay on the surface can cause problems with the bushing moving. You'll have to look around and see what rubbler lubricants are available to you.



    Quote Originally Posted by Bellicose Right Winger
    Try liquid dish washing detergent.

    Paul Shovestul


  5. #5
    Join Date
    Jan 2004
    Location
    Sydney, Australia
    Posts
    104

    Default Won't move either way now

    But i will take your advice, at least it will take my mind off the car for a while.

    John

  6. #6
    Join Date
    May 2004
    Location
    Sydney, Australia
    Posts
    2,699

    Default

    It doesn't sound very good John. I recall Shogun saying that he / or other people put them in hot water to get the rubber softer when installing. I assume your car is on the ground. hmmm sorry to hear about your problems.

  7. #7
    Join Date
    Dec 2005
    Location
    Brisbane Australia
    Posts
    1,447

    Default

    i am not sure if this is suitable, but you might try heating up the housing a bit. standard thing might not be suitable because of the rubber bushing. its just an idea

    Germans: Why can't they make everything?

  8. #8
    Join Date
    Jul 2004
    Posts
    778

    Default

    Quote Originally Posted by John 535is (Sydney)
    I got my new Lemforder rear subframe mounts from Patrick at BMA. I had to cut the old ones out. I removed the centre bolt, and cleaned up the subframe housing using a wire brush on a drill. All looks clean. I am trying to press the new ones in using a jack, a peice of timber and water as the lubricant without any joy. I now have the mount halfway in, and it wont go any futher (and now I can't get it out either!)

    Once I get it out, any suggestions on lubricating or trimming the mount?

    Thanks

    John - 535is Sydney
    Maybe this can help with the next bushing: Hold in the freezer overnight for shrinkage?

    deleted air conditioning

  9. #9
    Join Date
    Dec 2003
    Posts
    1,640

    Default DON'T use soap...

    Bill's correct!

    ...the bushing will slip back out under load. Trust me. Been there, done that. See bwme34.net on rear subframe bushing section if you don't believe me.

    Re getting the sucker pressed in - it's a helluva press. We used the factory tool and it was moaning the whole way. Be careful not to mushroom the top of your bushing too - that will just make things worse.

    Good luck...

    Jeff



    Quote Originally Posted by Bill R.
    amount diluted with a large amount water. Some people who have use straight liguid detergent have had problems with the bushing not staying in place. Bmw only recomends circolight, a rubber lubricant that is competely absorbed into the rubber a few minutes after its pressed in... P80 listed here is the same thing as circolight.

    These are both rubber lubricants designed to absorb completely into the rubber that the bushing stays in place once its pressed . Using other lubricants that stay on the surface can cause problems with the bushing moving. You'll have to look around and see what rubbler lubricants are available to you.
    Bellevue WA
    90 535iM - not much stock remains. 3.7 liters, ported head, cammed, 3.73 diffy, M5 brakes, MAFed, yadda yadda yadda
    86 Porsche 951 - Track Toy

  10. #10
    Join Date
    Dec 2003
    Location
    Wellington,New Zealand
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    Default

    just to take your mind off your present problems,did you get your obc problems sorted?
    I have my fingers crosed you can get the is back on the road soon!
    Gone but not forgotten

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