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Home >> Subaru >> 2021 >> Ascent Base >> Repair and Diagnosis >> Engine Mechanical >> Mechanical >> Engine Mechanical System >> Crank Pulley >> Installation

Crank Pulley: Installation

  1. Degrease the press-fit section for the chain cover front oil seal, and install a new front oil seal to the chain cover using a special tool (ST).
    CAUTION: Do not apply fluid such as engine oil to the front oil seal and the chain cover; otherwise engine oil leakage may occur.

    Preparation tool: 

    ST: SPECIAL TOOL B (41399FG020) Front oil seal press-fit position: 

    1+0-1 mm (0.0394+0-0.0394 in) position from chain cover end face

    G13862531Courtesy of SUBARU OF AMERICA, INC.
  2. Clean the crankshaft thread using compressed air.
  3. Apply engine oil to the crank pulley bolt seat and thread.
  4. Install the crank pulley.
    1. Use a marker to add lines at the portion of the crank pulley bolt head that has no indented line, as shown in the figure.
      NOTE:
      • Lines are indented by 90° on the crank pulley bolt head.
      • To minimize an angular error, use a ruler, etc. to draw a straight line.
      G13862532Courtesy of SUBARU OF AMERICA, INC.
    2. Set the crank pulley to the chain cover.
    3. Use the ST1 and ST2 to lock the crank pulley, and temporarily tighten the crank pulley bolt.
      NOTE: To prevent damaging ST1, attach the ST2 onto the ST1 as shown in the figure.
      G08316897Courtesy of SUBARU OF AMERICA, INC.

      Preparation tool: 

      ST1: PULLEY WRENCH (18355AA000)

      ST2: PULLEY WRENCH PIN SET (18334AA000)

      Tightening torque: 

      20 N.m (2.0 kgf-m, 14.8 ft-lb)

      G13198739Courtesy of SUBARU OF AMERICA, INC.
    4. Draw reference lines (A) and (B) using a marker to set the socket to the crank pulley bolt as shown in the figure.
      NOTE: Use a 6-point socket to tighten the crank pulley bolt so that a 12-point socket may otherwise be broken.
      G13862535Courtesy of SUBARU OF AMERICA, INC.
    5. As shown in the figure, use a marker with a different color than in step (1) to draw a reference line (C) on the crank pulley bolt, according to the reference line (A) and the indented line or additional line on the crank pulley bolt head. Then draw a end line (D) on the crank pulley, using the reference line (B) and the indented line or additional line on the crank pulley bolt head as a reference.
      NOTE: Reference line (C) is drawn for prevention of misidentification and better visibility.
      G13198741Courtesy of SUBARU OF AMERICA, INC.
    6. Use the ST1 and ST2 to lock the crank pulley, and tighten the crank pulley bolt until the reference line (C) and end line (D) are aligned.
      NOTE: It should be approx. 120° when reference line (C) and end line (D) are aligned.

      Preparation tool: 

      ST1: PULLEY WRENCH (18355AA000)

      ST2: PULLEY WRENCH PIN SET (18334AA000)

      Tightening angle: 

      120°±5°

      G13198742Courtesy of SUBARU OF AMERICA, INC.
  5. Install the V-belts. Ref. to MECHANICAL (H4DOTC)>V-belt>INSTALLATION>V-BELT .
  6. When working on the vehicle
    NOTE: When working on the vehicle, perform the following steps also.
    1. Install the air intake duct. Ref. to INTAKE (INDUCTION) (H4DOTC)>Air Intake Duct>INSTALLATION .
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