Changing belts that have a spring loaded belt tensioner

Discussion in 'Mechanic and Repair' started by dfor, Jul 5, 2006.

  1. dfor

    dfor LawnSite Senior Member
    Posts: 815

    I need to change the deck belt. I have always had the type that is similar to a turnbuckle. Turn the nut to tighten up the belt. How do you guys relieve the tension on a belt that has the spring loaded tensioner? Thanks for any tips.
     
  2. lawnmaniac883

    lawnmaniac883 LawnSite Silver Member
    Posts: 2,613


    Take the spring off. Some more information about the kind of mower you have would help but for the most part you just get some big channel locks and pull the spring off CAREFULLY.
     
  3. ed2hess

    ed2hess LawnSite Fanatic
    Posts: 13,138

    On Scag you can roll the belt off the pulley and roll the new one back on without taking the spring off. Scag has a notch that the socket wrench fits in so you can take the spring load off if you want to.
     
  4. ProLawns

    ProLawns LawnSite Senior Member
    Posts: 476

    Use pliers to pull the spring off or pry it off with a big screwdriver. Make sure it doesn't fly off and cause injury. To put it back on use a piece of starter rope with a loop in one end. Hook one end of the spring and hook the rope on the other end and pull it over to it's mounting post. Sometimes you have to use your foot if it's a high tension spring.
     
  5. FIXDISS

    FIXDISS LawnSite Senior Member
    Posts: 445

    In most cases the idler has a center bolt. Simply place a box-end wrench on the bolt head or the nut and pull the idler back so you can align belt . The nut should be tight enough to relieve tension without loosening up on you .
     
  6. Restrorob

    Restrorob LawnSite Fanatic
    Posts: 11,024

    I roll the belt off and on all spring loaded idler arms, Much easier than fighting a spring off and on.....
     
  7. tallimeca

    tallimeca LawnSite Bronze Member
    Posts: 1,229

    just put a piece of rope around the idler arm and pull it back for leverage. Beats taking the spring off and trying to "roll" the belt. That can damage the belt.
     
  8. Restrorob

    Restrorob LawnSite Fanatic
    Posts: 11,024


    Hmmmm, I've yet to damage a belt in 15 yrs., Care to explain how ?
     
  9. ProLawns

    ProLawns LawnSite Senior Member
    Posts: 476

    The spring has to come off to replace the hydro pump belt on my Z because the belt goes behind the spring.
     
  10. TLS

    TLS LawnSite Fanatic
    Posts: 7,940

    I either do as RestroRob does, or I use the box wrench. Either way, the spring usually stays where it's at.
     

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