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Home >> Subaru >> 2010 >> Legacy Premium, Standard >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 4 (Engine Mechanical (H4DOTC - 2.5L DOHC Turbo)) >> Timing Belt >> Installation >> Automatic Belt Tension Adjuster Assembly And Belt Idler

Automatic Belt Tension Adjuster Assembly And Belt Idler

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  1. Prepare for installation of the automatic belt tension adjuster assembly.
    CAUTION:
    • Always use a vertical type pressing tool to move the adjuster rod down.
    • Do not use a lateral type vise.
    • Push the adjuster rod vertically.
    • Press-in the push adjuster rod gradually taking three minutes or more.
    • Do not allow press pressure to exceed 9,807 N (1,000 kgf, 2,205 lbf).
    • Push in the adjuster rod to the end face of the cylinder. However, do not press the adjuster rod below the end face of the cylinder. Doing so may damage the cylinder.
    • Do not release the press pressure until stopper pin is completely inserted.
    1. Attach the automatic belt tension adjuster assembly to vertical pressing tool.
    2. Slowly push in the adjuster rod with a pressure of 165 N (16.8 kgf, 37.1 lbf) or more until the adjuster rod is aligned with the stopper pin hole in the cylinder.
      Fig 1: Attaching Automatic Belt Tension Adjuster Assembly To Vertical Pressing Tool
      G04997650Courtesy of SUBARU OF AMERICA, INC.
    3. With a 2 mm (0.08 in) dia. stopper pin or a 2 mm (0.08 in) (nominal) dia. hex wrench inserted into the stopper pin hole in cylinder, secure the adjuster rod.
      Fig 2: Inserting Hex Wrench Into Stopper Pin Hole In Cylinder
      G04997651Courtesy of SUBARU OF AMERICA, INC.
  2. Install the automatic belt tension adjuster assembly.

    Tightening torque: 

    39 N.m (4.0 kgf-m, 28.8 ft-lb) 

    Fig 3: Identifying Automatic Belt Tension Adjuster Assembly
    G05333941Courtesy of SUBARU OF AMERICA, INC.
  3. Install the belt idler No. 2.

    Tightening torque: 

    39 N.m (4.0 kgf-m, 28.8 ft-lb) 

    Fig 4: Identifying Belt Idler No. 2
    G04998674Courtesy of SUBARU OF AMERICA, INC.
  4. Install the belt idlers.

    Tightening torque: 

    39 N.m (4.0 kgf-m, 28.8 ft-lb) 

    Fig 5: Identifying Belt Idlers
    G05659765Courtesy of SUBARU OF AMERICA, INC.

    Tightening torque: 

    25 N.m (2.5 kgf-m, 18.4 ft-lb) 

    Fig 6: Identifying Belt Idler
    G05955188Courtesy of SUBARU OF AMERICA, INC.