High mileage problem with the om651 diesel

Discussion in 'Engine' started by grober, Apr 20, 2014.

  1. grober

    grober MB Club Veteran

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  2. Dieselman

    Dieselman Banned

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    They are rubbish. Fancy only using a single row chain.
     
  3. martyz

    martyz Hardcore MB Enthusiast

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    Avoid 4 pot diesel engines from 08 with high mileage then?
     
  4. jamesfuller

    jamesfuller Hardcore MB Enthusiast

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    :eek: what a mess.

    Those sprockets are well eaten, my first thought when I saw that chain is over tensioned. Is that possible with these tensioners? Not at all familiar with this type of thing to be honest, does this chain drive a high pressure pump?
     
  5. Dieselman

    Dieselman Banned

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    Yes.

    The wear is a result of the single row chain.
     
  6. martyz

    martyz Hardcore MB Enthusiast

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    edit
     
    Last edited: Apr 20, 2014
  7. jamesfuller

    jamesfuller Hardcore MB Enthusiast

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    :doh: I almost felt silly asking, of course they wouldn't run a HP pump with a single row chain! But hey, they do. I wonder how much money that saved them at production time!:fail
     
  8. OP
    OP
    grober

    grober MB Club Veteran

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    [​IMG]
    AND
    [​IMG]
    10 is the drive for the high pressure injection pump but to be fair acts as a transfer gear from the geared lower section for the oil pump and lanchester shafts driven from the crank.
    The major problem is the location of the timing gear at the rear of the engine meaning repair can be difficult.
     
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