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Thread: K1100LT Ignition oil seal

  1. #1
    Registered User
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    May 2004
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    boise, idaho
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    K1100LT Ignition oil seal

    I have oil exiting the plate that covers the ignition of my K1100LT. I take that to indicate the oil seal #11147654531 has failed. What sort of challenges can I expect when I get in there to replace the seal? Who has done this? What tools are needed?

  2. #2
    Registered User
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    Sep 2005
    Location
    Commerce Township, MI
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    Hello,

    I believe the seal is removed and installed from the inside of the timing chain cover. Below is from the workshop manual. It's been a while since I've done this repair and it sounds like a lot of work and a bit messy, but it's not too bad.


    That means that you need to:
    • Remove ignition cover
    • Take off gasket
    • Remove Hall-effect signal transmitter, noting
    the semi-circular shim washers.
    Note:Mark the correct installed position of the adjusting
    washer on the engine block, or remove it in the TDC
    position.
    • Remove gate rotor and take off adjusting
    washer.

    Remove the crankshaft cover
    You'll need to drain the coolant.
    • Detach the coolant hose at the water pump and
    radiator.

    • Remove screws and the cover.

    Removing cylinder head cover
    • Remove the ignition leads.
    • Remove screws and the cylinder head cover.

    Removing and installing sealing ring in timing
    case cover

    Remove screws and timing chain cover. I believe the cover is sealed using RTV silicon and may be a bit hard to remove.
    • Drive the sealing ring out with a suitable drift.
    • Drive the sealing ring in from the inside using
    handle, BMWNo. 00 0 500, and drift,

    Regards,

    Richard

    Commerce Township, MI

  3. #3
    Registered User
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    May 2004
    Location
    boise, idaho
    Posts
    172

    ignition oil seal

    Quote Originally Posted by richo2006 View Post
    Hello,

    I believe the seal is removed and installed from the inside of the timing chain cover. Below is from the workshop manual. It's been a while since I've done this repair and it sounds like a lot of work and a bit messy, but it's not too bad.


    That means that you need to:
    Remove ignition cover
    Take off gasket
    Remove Hall-effect signal transmitter, noting
    the semi-circular shim washers.
    Note:Mark the correct installed position of the adjusting
    washer on the engine block, or remove it in the TDC
    position.
    Remove gate rotor and take off adjusting
    washer.

    Remove the crankshaft cover
    You'll need to drain the coolant.
    Detach the coolant hose at the water pump and
    radiator.

    Remove screws and the cover.

    Removing cylinder head cover
    Remove the ignition leads.
    Remove screws and the cylinder head cover.

    Removing and installing sealing ring in timing
    case cover

    Remove screws and timing chain cover. I believe the cover is sealed using RTV silicon and may be a bit hard to remove.
    Drive the sealing ring out with a suitable drift.
    Drive the sealing ring in from the inside using
    handle, BMWNo. 00 0 500, and drift,

    Regards,

    Richard

    Commerce Township, MI
    Thank you for your reply, Richard. I must have used the incorrect nomenclature for that seal. I cannot imagine that the steps in the description are necessary. Removal of the valve and crank covers?! Why? I've done further research since I posted the original question. I now believe the oil seal can be replaced without even the removal of the timing chain cover. The only issue I foresee is whether the seal is the newer, Teflon type or the old, conventional design with the spring. I understand the former can be a bit tricky to install as the lip can easily end facing the wrong direction and subsequently leak.

  4. #4
    Registered User
    Join Date
    Sep 2005
    Location
    Commerce Township, MI
    Posts
    132
    Hello,

    As I said earlier, it's been a while since I've had to replace that seal, however, the BMW workshop manual states that the seal is driven in from the inside. If this is indeed the case, then both the crank and valve covers are removed because they seal against the ends of the timing chain cover. Obviously, if the seal is replaceable from the outside, then none of the covers need removal.

    Regards,

  5. #5
    Registered User
    Join Date
    Sep 2005
    Location
    Commerce Township, MI
    Posts
    132
    Hello,

    I found a picture of a used timing chain cover on ebay and it does indeed look like the seal can be replaced from the front.

    Regards,

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