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Home >> Infiniti >> 2004 >> M45 >> Repair and Diagnosis >> Steering >> Power Steering System >> Power Steering Oil Pump >> Inspection After Disassembly >> Assembly

Inspection After Disassembly: Assembly

NOTE: Fix oil pump in vise as vise occasion demands.
CAUTION: When retaining drive shaft assembly in a vise, always use copper or aluminum plates between vise and shaft.
  1. Apply a coat of Genuine Nissan PSF or equivalent to oil seal lip and to the circumference of oil seal. Using proper tool, such as hand press machine, install it to housing.
    NOTE: Do not reuse oil seal.
  2. Apply a coat of Genuine Nissan PSF or equivalent to drive shaft assembly and press drive shaft assembly into housing with suitable tool, then install snap ring.
    Fig 1: Installing New Oil Seal
    G00750044Courtesy of NISSAN MOTOR CO., U.S.A.
    NOTE: Do not reuse snap ring.
  3. Apply a coat of Genuine Nissan PSF or equivalent to O-ring and install O-ring into housing.
    NOTE: Do not reuse O-ring.
  4. Install side plate to housing.
    Fig 2: Identifying Side Plate Oil Pump Component
    G00750045Courtesy of NISSAN MOTOR CO., U.S.A.
  5. Install lock pin into lock pin hole, and install cam-ring as shown.
    Fig 3: Installing Cam-Ring With Letter (E) To Rear Cover
    G00750046Courtesy of NISSAN MOTOR CO., U.S.A.
    NOTE: Do not reuse oil O-ring.
    • When installing cam-ring, turn carved face with a letter (E) of it to rear cover.
      CAUTION: Do not confuse the assembling direction of cam-ring. If cam-ring is installed facing the incorrect direction, it may cause pump operation malfunction.
  6. Install rotor to housing.
    • When installing rotor, turn punch mark face on rotor to housing.
    Fig 4: Installing Rotor With Punch Mark Face On Rotor To Housing
    G00750047Courtesy of NISSAN MOTOR CO., U.S.A.
  7. Install vane to rotor with the round portion facing outside.
    Fig 5: Installing Vane To Rotor With Round Portion Facing Outside
    G00750048Courtesy of NISSAN MOTOR CO., U.S.A.
  8. Check if drive shaft assembly turns smoothly.
  9. Install gasket to housing.
    NOTE: Do not reuse gasket.
  10. Install rear cover to housing and tighten bolts at the specified torque.
    Fig 6: Identifying Oil Pump Rear Cover
    G00750049Courtesy of NISSAN MOTOR CO., U.S.A.
  11. Install pulley to drive shaft assembly then tighten lock nut at the specified torque.
  12. Install spring, flow control valve, O-ring, connector bolt, joint, washer to housing. Then tighten lock nut at the specified torque.
    NOTE: Do not reuse O-ring
  13. Apply a coat of Nissan PSF or equivalent to O-ring and install O-ring to housing.
    NOTE: Do not reuse O-ring.
  14. Install suction pipe to housing.
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