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Thread: Fan pulley bearing 300Tdi

  1. #1
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    Fan pulley bearing 300Tdi

    Hey folks,
    I am hoping someone can advise if my viscous fan pulley bearing that is in the front case of the 300tdi is too worn or not.
    Here is a video of it:



    It has an ever so small amount of play in it. This was tested when the engine was cold – perhaps it would be different when hot?
    I understand that the bearing is pain/expensive to replace and just need to know if this one is too worn and do they often fail and the pulley just drops off?!

    Thanks

  2. #2
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    is it at all noisy or harsh when you spin it by hand?
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  3. #3
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    It spins quite freely by itself when i spin it.
    I honestly don't know if the noise is normalish or not. If someone who has heard the bearing on another 300Tdi bearing could listen to the noise in the video perhaps they could tell if it is normal or not...

  4. #4
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    The bearing is pretty stuffed, a good bearing makes almost no noise at all. Changing a bearing is neither terribly expensive nor terribly hard but you will need a press and some tool skills. Here is how I did it a little while ago:

    I changed a 300 TDi fan bearing

  5. #5
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    Its got play, so change it

  6. #6
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    Rightio thanks guys.

    I have searched around the forum but cant seem to find any pics of a homemade crank pulley holder. Anyone made one with a simple design?
    I think the pre-made professional tool is expensive.

    I guess i will just find some of my spare some flat bar and drill some holes in it etc...

    Thanks

  7. #7
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    If it's an auto, lock the crank by removing the starter motor and inserting a 3/8" drive socket and bar into the small recess behind it, to grab one of the torque converter bolts. In a manual 4th gear high range and hand brake on.

  8. #8
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    Sounds like a plan.
    The thread is not reverse on the crank pulley bolt is it?

  9. #9
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    Quote Originally Posted by Finnius View Post
    Sounds like a plan.
    The thread is not reverse on the crank pulley bolt is it?
    Right hand thread.
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  10. #10
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    MAKING DO

    Over the past years I have changed many bearing like the situation you speak of using an offset vice, bolts. sockets and specially cut bits of timber where needed with great success. I would recommend any young bloke starting out today doing there own repairs to own an off set vice with a little imagination its surprising what you can do

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