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  1. 11-26-2010 11:59 PM #1
    Julian540
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    Oil pump chain adjustment

    I dropped my oil pan to check the oil pump bolts and noticed the chain attached to the oil pump is extremly loose. Are there detailed instructions on how to adjust the chain?

    Oh, this is on my 1998 540
    Thanks
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  3. 11-27-2010 02:59 AM #2
    edjack
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    TIS gives total chain deflection of 10 +/- 2mm>>

    Adjust via the Allen head adjustment screw.
    Ed in San Jose. BMW CCA member since 1987 (Nr. 62319). Golden Gate Chapter. '97 540i 6 speed. Build Date 3/97. Aspensilber over Aubergine leather.
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  4. 11-27-2010 03:21 AM #3
    Julian540
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    Re: TIS gives total chain deflection of 10 +/- 2mm>>

    I've pulled the left bolt from the oil pump but there is no allen bolt to adjust... am I missing something or looking in the wrong area?

    Would you happen to have photos or illistration from TIS or Bentley manuals?

    Thanks
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  5. 11-27-2010 09:33 AM #4
    JimLev
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    Bentleys shows an allen adj on the bottom of the (

    bolt I'm pointing to, but I don't see an allen on mine. It's possible that the adjustment is done with the nut above the pump, and maybe by using all 3 bolts that hold the pump to the block.

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  6. 11-27-2010 03:21 PM #5
    Julian540
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    Re: Bentleys shows an allen adj on the bottom of the (

    Thanks Jim I'll try adjusting the three bolts to block
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  7. 11-27-2010 04:23 PM #6
    edjack
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    Watch your Inbox


    Ed in San Jose. BMW CCA member since 1987 (Nr. 62319). Golden Gate Chapter. '97 540i 6 speed. Build Date 3/97. Aspensilber over Aubergine leather.
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