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Timing belt tightness

  • 16-04-2016 9:12am
    #1
    bonzodog2
    Registered Users, Registered Users 2 Posts: 6,285 ✭✭✭


    Its not a car, but this seems the best forum.
    Iveco Daily 2.8 diesel.
    How much play is acceptable in the timing belt? There seems to be maybe 15-20mm play on the longest stretch between pulleys. Is this OK?


Comments

  • #2
    Seth Brundle
    Moderators, Politics Moderators Posts: 41,240 Mod ✭✭✭✭Seth Brundle


    Presumably you're referring to the ancillary fan belt rather than the timing belt


  • #3
    bonzodog2
    Registered Users, Registered Users 2 Posts: 6,285 ✭✭✭bonzodog2


    No, the toothed timing belt.


  • #4
    my3cents
    Closed Accounts Posts: 9,764 ✭✭✭my3cents


    bonzodog2 wrote: »
    No, the toothed timing belt.

    So how much pressure are you applying to get the "play"?


  • #5
    CJhaughey
    Registered Users, Registered Users 2 Posts: 14,907 ✭✭✭✭CJhaughey


    A rule of thumb is a 1/4 turn on the longest run.
    I don't know the spec for the 2.8 but that RoT has done me very well over the years.


  • #6
    bonzodog2
    Registered Users, Registered Users 2 Posts: 6,285 ✭✭✭bonzodog2


    my3cents wrote: »
    So how much pressure are you applying to get the "play"?

    Finger pressure. Its quite a long gap between pulleys here.


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  • #7
    bonzodog2
    Registered Users, Registered Users 2 Posts: 6,285 ✭✭✭bonzodog2


    CJhaughey wrote: »
    A rule of thumb is a 1/4 turn on the longest run.
    I don't know the spec for the 2.8 but that RoT has done me very well over the years.

    Could you elaborate?


  • #8
    CJhaughey
    Registered Users, Registered Users 2 Posts: 14,907 ✭✭✭✭CJhaughey


    Using finger pressure you should be able to just get 1/4 of a turn on the belt twisting it in the middle of the longest run that the belt has between two pulleys.
    More than 1/4 and its too loose, less than 1/4 its too tight.


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