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Oil pump chain slack

Discussion in 'XJ Technical Chat' started by eigenseca, Nov 14, 2020.

  1. eigenseca

    eigenseca Member

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    Is this much slack in the oil pump chain normal? Seems really excessive to me but I can't find anything in the manual about a spec.

     
    eigenseca, Nov 14, 2020
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  2. Franz

    Franz Well-Known Member

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    That's normal slack, nothing to be concerned about.
     
    Franz, Nov 14, 2020
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  3. eigenseca

    eigenseca Member

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    Strange, I've just never seen so much slack in a chain before. I wonder why it was designed like that..
     
    eigenseca, Nov 14, 2020
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  4. Franz

    Franz Well-Known Member

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    My engine is the same I am sure it was designed to last the lifetime of the engine. They are not expensive but I didn't change mine.
     
    Franz, Nov 14, 2020
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  5. k-moe

    k-moe Pie, Bacon, Bourbon. Moderator Premium Member

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    The slack is to make sure that it doesn't break under load. There is no place to put an automatic tensioner or guide, and neither is necessary for an oil pump.
     
    k-moe, Nov 14, 2020
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  6. Mezzmo

    Mezzmo Active Member

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    Seems a bit more than what my engine had, but probably fine as its not under much load. Maybe see how much a new chain is if you want to be sure...
     
    Mezzmo, Nov 14, 2020
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