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Disassembly and Assembly: Disassembly

WARNING: This page is about a different car, the 2012 Infiniti FX50. However, it is still accessible from the selected car via links, so may be relevant.
  1. Remove auto tensioners and idler pulley. Refer to "EXPLODED VIEW ".
  2. Remove oil level gauge and oil level gauge guide. Refer to "EXPLODED VIEW ".
  3. Remove alternator bracket and alternator stay.
  4. Remove camshaft position sensors.
    Fig 1: Identifying Camshaft Position Sensors Magnetic Materials Prevention Areas
    G08215241Courtesy of NISSAN NORTH AMERICA, INC.
    CAUTION:
    • Handle carefully to avoid dropping and shocks.
    • Never disassemble.
    • Never allow metal powder to adhere to magnetic part at sensor tip.
    • Never place sensors in a location where they are exposed to magnetism.
  5. Remove valve timing control cover as per the following:
    1. Disconnect valve timing control solenoid valve harness connector.
    2. Loosen mounting bolts in the reverse order as shown in the figure.
      Fig 2: Identifying Valve Timing Control Cover Bolts Loosening Sequence
      G08215242Courtesy of NISSAN NORTH AMERICA, INC.
      CAUTION:
      • Exercise care not to damage mating surfaces.
      • Shaft is internally jointed with camshaft sprocket center hole. When removing, keep it horizontal until it is completely disconnected.
  6. Remove valve timing control solenoid valve (INT and EXH), if necessary.
    CAUTION: Valve timing control solenoid valve is not reusable. Never remove it unless required.
  7. Remove O-rings (1) from front cover.
    Fig 3: Identifying Front Cover "O" Rings
    G05980104Courtesy of NISSAN NORTH AMERICA, INC.
  8. Remove rocker cover. Refer to "EXPLODED VIEW ".
  9. Obtain No. 1 cylinder at TDC of its compression stroke. Refer to "INSPECTION ".
  10. Remove crankshaft pulley. Refer to "FRONT OIL SEAL: REMOVAL AND INSTALLATION ".
  11. Remove water pump pulley. Refer to "EXPLODED VIEW ".
  12. Remove oil pan (lower) and oil strainer. Refer to "EXPLODED VIEW ".
  13. Remove oil pan (upper). Refer to "EXPLODED VIEW ".
  14. Remove front cover as per the following:
    1. Loosen mounting bolts in reverse order as shown in the figure.
    2. Insert a suitable tool into the notch at front cover.
      • Pry off case by moving a suitable tool.
        CAUTION:
        • Exercise care not to damage mating surfaces.
        • After removal, handle front cover carefully so it does not tilt, cant, or warp under a load.
          Fig 4: Identifying Front Cover Mounting Bolts Tightening Sequence
          G05980105Courtesy of NISSAN NORTH AMERICA, INC.
  15. Remove front oil seal from front cover using suitable tool.
    • Use screwdriver for removal.
    CAUTION: Be careful not to damage front cover.
  16. Remove O-rings (1), (2) from cylinder heads and cylinder block.
    Fig 5: Identifying Cylinder Heads And Cylinder Block "O" Rings
    G05980106Courtesy of NISSAN NORTH AMERICA, INC.
  17. Remove oil filter (for valve timing control solenoid valve), if necessary.
  18. Remove timing chain tensioner cover from front cover, if necessary.
    • Use seal cutter [SST: KV10111100 (J-37228)] to cut liquid gasket for removal.
  19. Remove oil pump drive chain as per the following:
    1. Push oil pump drive chain tensioner (1).
    2. Insert a stopper pin (A) into the body hole.
      Fig 6: Removing/Installing Oil Pump Drive Chain Using Tool
      G05980107Courtesy of NISSAN NORTH AMERICA, INC.
    3. Hold the two flat parts of oil pump shaft, and then loosen the oil pump sprocket (oil pump side) nut.
      Fig 7: Loosening Oil Pump Sprocket Side Nut
      G08215247Courtesy of NISSAN NORTH AMERICA, INC.
    CAUTION: Secure the oil pump unit shaft with the two flat parts.
  20. Remove oil pump drive chain tensioner.
  21. Remove timing chain tensioner (bank 1) as per the following:
    NOTE: To remove timing chain and related parts, start with those on bank 1. The procedure for removing parts on bank 2 is omitted because it is the same as that for bank 1.
    1. Push both sides of spring (A) against spring tension, and then press in plunger with a slack guide (2).
      Fig 8: Pressing Plunger In Timing Chain Tensioner Using Slack Guide
      G08215248Courtesy of NISSAN NORTH AMERICA, INC.
    2. Insert a stopper pin (A) into the body hole, and then fix it with the plunger pushed in.
      Fig 9: Fixing Stopper Pin Using Plunger
      G05980110Courtesy of NISSAN NORTH AMERICA, INC.
  22. Remove tension guide and slack guide.
  23. Remove timing chain and crankshaft sprocket.
    CAUTION: After removing timing chain, never turn crankshaft and camshaft separately, or valves will strike the piston head.
  24. Remove camshaft sprocket (INT) and (EXH) as per the following:

    Exhaust side:

    • Secure the hexagonal portion of camshaft (EXH) using a wrench to loosen mounting bolt. Refer to "EXPLODED VIEW ".

    Intake side:

    • Secure the hexagonal portion (located in between journal No. 1 and journal No. 2) of drive shaft (A) using a wrench (B) to loosen mounting bolt. Refer to "EXPLODED VIEW ".
      Fig 10: Loosening Drive Shaft Mounting Bolt Using Wrench
      G08215250Courtesy of NISSAN NORTH AMERICA, INC.
    NOTE: The figure shows an example of bank 2.
    CAUTION:
    • Never loosen the mounting bolt by securing anything other than the camshaft (drive shaft) hexagonal portion or with tensioning the timing chain.
    • When holding the hexagonal part of camshaft (drive shaft) with a wrench, be careful not to allow the wrench to cause interference with other parts.
    • Never disassemble camshaft sprocket. [Never loosen bolts (C), (D) as shown in the figure.]
      Fig 11: Identifying Intake And Exhaust Camshaft Sprocket
      G08215251Courtesy of NISSAN NORTH AMERICA, INC.
  25. Use scraper to remove all traces of old liquid gasket from front cover and opposite mating surfaces.
    • Remove old liquid gasket from bolt hole and thread.
      Fig 12: Identifying Liquid Gasket On Bolt Hole And Thread
      G08215252Courtesy of NISSAN NORTH AMERICA, INC.
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