2003 Infiniti I35FACTORY OEM SERVICE PROCEDURE

Control Valve Assembly: Assembly

  1. Install upper, inter and lower body.
    1. Place oil circuit of upper body face up. Install steel balls in their proper positions.
      Fig 1: Locating Steel Balls
      G02091022Courtesy of NISSAN MOTOR CO., U.S.A.
    2. Install upper separating gasket, upper inter separating gasket and upper separating plate in order shown in illustration.
      Fig 2: Installing Separating Plat With Upper & Inter Gaskets
      G02091023Courtesy of NISSAN MOTOR CO., U.S.A.
    3. Install reamer bolts f  from bottom of upper body. Using reamer bolts as guides, install separating plate and gaskets as a set.
      Fig 3: Installing Reamer Bolts, Separating Plate & Gaskets
      G02091024Courtesy of NISSAN MOTOR CO., U.S.A.
    4. Install pilot filter.
      Fig 4: Installing Pilot Filter
      G02091025Courtesy of NISSAN MOTOR CO., U.S.A.
    5. Place lower body as shown in illustration (side of inter body face up). Install steel balls in their proper positions.
      Fig 5: Installing Steel Balls In Their Proper Positions
      G02091026Courtesy of NISSAN MOTOR CO., U.S.A.
    6. Install inter body on upper body using reamer bolts f  as guides.
      Fig 6: Installing Inter Body On Upper Body
      G02091027Courtesy of NISSAN MOTOR CO., U.S.A.
      • Be careful not to dislocate or drop steel balls.
    7. Install check balls and oil cooler relief valve springs in their proper positions in lower body.
      Fig 7: Installing Check Balls And Oil Cooler Relief Valve Springs
      G02091028Courtesy of NISSAN MOTOR CO., U.S.A.
    8. Install lower separating gasket, lower inter separating gasket and lower separating plate in order shown in illustration.
      Fig 8: Installing Separating Gaskets Lower Separating Plate
      G02091029Courtesy of NISSAN MOTOR CO., U.S.A.
    9. Install bolts e  from bottom of lower body. Using bolts e  as guides, install separating plate and gaskets as a set.
    10. Temporarily install support plates on lower body.
      Fig 9: Temporarily Installing Support Plates On Lower Body
      G02091030Courtesy of NISSAN MOTOR CO., U.S.A.
    11. Install lower body on inter body using reamer bolts f  as guides and tighten reamer bolts f  slightly.
      Fig 10: Installing Lower Body On Inter Body
      G02091031Courtesy of NISSAN MOTOR CO., U.S.A.
  2. Install O-rings to solenoid valves and terminal body.
    • Apply ATF to O-rings.
    Fig 11: Installing O-Rings To Solenoid Valves & Terminal Body
    G02091032Courtesy of NISSAN MOTOR CO., U.S.A.
  3. Install and tighten bolts. See Fig 12

    Bolt length, number and location: see  Fig 13 

    Fig 12: Installing & Tighten Bolts
    G02091034Courtesy of NISSAN MOTOR CO., U.S.A.
Factory Service Tools

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • • You smell fuel, burning insulation, or see smoke.
  • • Brakes feel soft, pull hard to one side, or make grinding noises.
  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
  • • You are not confident in the next step or safety outcome.

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