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Thread: Long-shot question

  1. #1
    Join Date
    Dec 2003
    Location
    NW GA
    Posts
    261

    Default Long-shot question

    I know this is a long-shot but i need to see if any of you guys can help. This morning I found a small bolt and washer laying on the floor under the front end of my car that I can't figure out where it might have come from.

    On the head of the bolt is stamped VERBUS 68. The bolt looks like a machine thread and is a 10mm and approx 1" long. Over the past few days I've noticed a slightly louder than normal noise (almost a quiet thumping) when running the compressor, but my eyesight is getting so bad I can't tell if maybe it is a bolt from the compressor pulley or possibly the aux. fan.

    Any suggestions would be most appreciated.
    1990 535i 5-sp., except for 16" M-Contours, cd deck, and clear corners, completely stock. 226k and running strong

  2. #2
    Join Date
    Mar 2005
    Location
    Long Beach, CA
    Posts
    2,563

    Default

    I have no clue, but I'm interested in what this forum comes up with.

    Ralph Mendoza Jr. - Long Beach, CA

  3. #3
    Join Date
    Dec 2003
    Posts
    1,640

    Default

    Oil pan bolts are famous for unscrewing. They are similar to what you've described.
    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

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

    Default Theres a bolt and washer that holds the compressor clutch hub on thats about

    that size also... if you reach around to the front of the compressor clutch hub you should be able to feel the bolt with your fingers.





    Quote Originally Posted by Mitch90535im
    I know this is a long-shot but i need to see if any of you guys can help. This morning I found a small bolt and washer laying on the floor under the front end of my car that I can't figure out where it might have come from.

    On the head of the bolt is stamped VERBUS 68. The bolt looks like a machine thread and is a 10mm and approx 1" long. Over the past few days I've noticed a slightly louder than normal noise (almost a quiet thumping) when running the compressor, but my eyesight is getting so bad I can't tell if maybe it is a bolt from the compressor pulley or possibly the aux. fan.

    Any suggestions would be most appreciated.

  5. #5
    Join Date
    Dec 2003
    Location
    NW GA
    Posts
    261

    Default

    Quote Originally Posted by Bill R.
    that size also... if you reach around to the front of the compressor clutch hub you should be able to feel the bolt with your fingers.
    Feels like that might be it Bill. Something on the front of the compressor is definetly loose and rattling. I can feel it with my hand, but really can't see it.

    Does anybody have a link to a parts diagram that would show the front of the compressor and bolt locations?
    1990 535i 5-sp., except for 16" M-Contours, cd deck, and clear corners, completely stock. 226k and running strong

  6. #6
    Join Date
    Jan 2004
    Posts
    4,150

    Default I currently can't post pictures otherwise i would post it. I'm sure someone here

    knows that linkpage to the online etk to show you a pic of it. Its right in the center of the clutch pulley front plate, if you only feel a hole and can't feel the bolt then its gone.





    Quote Originally Posted by Mitch90535im
    Feels like that might be it Bill. Something on the front of the compressor is definetly loose and rattling. I can feel it with my hand, but really can't see it.

    Does anybody have a link to a parts diagram that would show the front of the compressor and bolt locations?

  7. #7
    Join Date
    Jun 2005
    Location
    Los Angeles
    Posts
    61

    Default

    Try this link. They have pictures of the pulleys so you can see the bolt location holes:

    https://www.rockauto.com/dbphp/mak,B...6+FI+%5BM30%5D

  8. #8
    Join Date
    Dec 2003
    Location
    NW GA
    Posts
    261

    Default

    Quote Originally Posted by Bill R.
    knows that linkpage to the online etk to show you a pic of it. Its right in the center of the clutch pulley front plate, if you only feel a hole and can't feel the bolt then its gone.
    I found the online ETK. Great pics. Well the center bolt and bolts that hold the face on seem to all be there. That thin plate on the front of the clutch plate does appear to have a bit of looseness and rattle, but I couldn't find any real reason for it. I'll check the oil pan bolts tomorrow when I have more light. If one has fallen completely out, chances are more are loose. Can't remember if I've ever checked them.

    Thanks for your help. You guys are a great resource and have saved me untold $hundreds over the past 4 years.
    1990 535i 5-sp., except for 16" M-Contours, cd deck, and clear corners, completely stock. 226k and running strong

  9. #9
    Join Date
    Jun 2005
    Location
    Los Angeles
    Posts
    61

    Default

    Another thought- various bolts used to come loose on an old e30 I had- either front airdamn, or from the radiator drain panel thingy, fan shroud. Maybe do a twice over if you can get the car raised enough-

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