355 - Torque on Belt Tensioners | FerrariChat
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355 Torque on Belt Tensioners

Discussion in '348/355' started by Giallo Modena, Mar 2, 2021.

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  1. Giallo Modena

    Giallo Modena Rookie

    Apr 7, 2015
    45
    Minnesota
    Full Name:
    K
    #1 Giallo Modena, Mar 2, 2021
    I am doing a belt change on my Ferrari F355. Does anyone know the torque spec on the F355 hydraulic tensioners? I replaced mine which were original but when I took it off it had been tightened. Quite tight not loose at all and I thought that part was supposed to move.
     
  2. Beetle

    Beetle Formula Junior

    Apr 10, 2013
    776
    #2 Beetle, Mar 3, 2021
    They shouldnt move only the bearing holder should pivot smoothly.
     
  3. yelcab

    yelcab F1 World Champ
    Consultant

    Nov 29, 2001
    13,506
    San Carlos, CA
    Full Name:
    Mitchell Le
    #3 yelcab, Mar 3, 2021
    25 Nm for the M8 bolts holding the tensioner body
    50Nm for the larger bolt holding the bearing.
     
  4. krazykarguy

    krazykarguy Formula Junior

    Apr 17, 2014
    732
    Fort Mill, SC
    Full Name:
    Matt
    #4 krazykarguy, Mar 3, 2021
    The arm on which the tensioner bearing is attached should move freely on it's bushing. At our last major, one of these arms was nearly stuck solid, the other moved easily. Remove these arms, and check for corrosion in the arm pivot.
     
  5. Giallo Modena

    Giallo Modena Rookie

    Apr 7, 2015
    45
    Minnesota
    Full Name:
    K
    #5 Giallo Modena, Mar 3, 2021
    Got it!
    Thanks
     

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