LEMON Manuals: Even more car manuals for everyone
Home >> Infiniti >> 2015 >> QX60 Base, AWD >> Repair and Diagnosis >> Engine Mechanical >> Engine Mechanical (Except Hybrid) >> Unit Disassembly And Assembly >> Cylinder Block >> Disassembly And Assembly >> Disassembly

Disassembly And Assembly: Disassembly

  1. Remove the engine assembly. Refer to REMOVAL AND INSTALLATION  (FWD) or REMOVAL AND INSTALLATION (AWD).
  2. Remove the drive plate. Refer to DOWEL PIN ALIGNMENT .
  3. Remove pilot converter.
    Fig 1: Removing Pilot Converter Using Pilot Bushing Puller
    G04073099Courtesy of NISSAN NORTH AMERICA, INC.
    Tool number : ST16610001 (J-23907)
  4. Cut away liquid gasket and remove rear oil seal retainer using Tool. Refer to PRECAUTION FOR LIQUID GASKET .
    Fig 2: Removing Rear Oil Seal Retainer
    G00465466Courtesy of NISSAN NORTH AMERICA, INC.
    Tool number : KV10111100 (J-37228)
    CAUTION:
    • Be careful not to damage mount surface.
    • If rear oil seal retainer is removed, replace it with a new one.
    NOTE:

    Rear oil seal and retainer form a single part and are replaced as an assembly.

  5. Install the engine on engine stand. Any commercially available engine stand can be used.
    Fig 3: Identifying Engine Stand
    G04073096Courtesy of NISSAN NORTH AMERICA, INC.
    CAUTION:
    • Use an engine stand that has a load capacity [approximately 240kg (529 lb) or more] large enough for supporting the engine weight.
    • Before removing the hanging chains, make sure the engine stand is stable and there is no risk of overturning.
  6. Remove the knock sensor.
    CAUTION:

    Carefully handle sensor to avoid shocking it.

  7. Drain the engine of all engine coolant and engine oil.
  8. Remove the oil pan. Refer to REMOVAL AND INSTALLATION (UPPER OIL PAN) .
  9. Remove the crankshaft pulley.
    • Use a suitable tool to prevent the crankshaft from turning.
  10. Remove the timing chain. Refer to REMOVAL AND INSTALLATION .
  11. Remove the cylinder head. Refer to REMOVAL AND INSTALLATION .
  12. Remove the piston and connecting rod assemblies.
    Fig 4: Pushing Connecting Rod Assembly Out To Cylinder Head
    G04073379Courtesy of NISSAN NORTH AMERICA, INC.
    1. Position the crankshaft pin corresponding to the connecting rod to be removed onto the bottom dead center.
    2. Remove the connecting rod cap.
    3. Using a hammer handle or similar tool, push the piston and connecting rod assembly out to the cylinder head side.
      • Before removing the piston and connecting rod assembly, check the connecting rod side clearance. Refer to CONNECTING ROD BEARING .
  13. Remove the connecting rod bearings.
    CAUTION:
    • When removing the connecting rod side bearings, note the installation position. Keep them in the correct order.
  14. Remove the piston rings from the piston.
    Fig 5: Identifying Piston Rings Expander
    G04073101Courtesy of NISSAN NORTH AMERICA, INC.
    • Use a piston ring expander.
    CAUTION:
    • When removing the piston rings, be careful not to damage the piston. Do not expand the rings excessively.
    • Be careful to mark the rings if they are to be reused so they are installed in their original position.
    • Before removing the piston rings, check the piston ring side clearance. Refer to INSPECTION .
  15. Remove the piston from the connecting rod as follows.
    Fig 6: Removing Snap Ring
    G04132335Courtesy of NISSAN NORTH AMERICA, INC.
    1. Using a snap ring pliers, remove the snap ring.
      CAUTION:

      Do not reuse snap rings, always replace with new ones.

    2. Heat the pistons to 60° - 70°C (140° - 158°F).
      Fig 7: Heating Piston
      G04159881Courtesy of NISSAN NORTH AMERICA, INC.
      WARNING:

      Pistons contain heat. When working, wear protective equipment to avoid getting burned.

    3. Push out the piston pin with a suitable tool with an outer diameter of approximately 20 mm (0.8 in).
      Fig 8: Pushing Out Piston Pin
      G04073104Courtesy of NISSAN NORTH AMERICA, INC.
  16. Remove the rear oil seal retainer from the cylinder block.
    • Insert a suitable tool between the rear end of the crankshaft counter weight and rear oil seal retainer, and separate the liquid gasket to remove.
    CAUTION:

    Be careful not to damage the mating surface.

  17. Remove the baffle plate from the main bearing beam.
  18. Loosen the bolts in the reverse order shown in the illustration, and remove the main bearing beam, bearing caps and crankshaft.
    Fig 9: Main Bearing Cap Bolt Tightening Sequence
    G07012733Courtesy of NISSAN NORTH AMERICA, INC.
    • Before loosening the main bearing cap bolts, measure the crankshaft side clearance.

      Refer to INSPECTION .

      ARROW : Engine front
  19. Remove the oil jets and dowel pins.
    Fig 10: Inserting Oil Jet Dowel Pin Into Cylinder Block Dowel Pin Hole
    G04073109Courtesy of NISSAN NORTH AMERICA, INC.
  20. Remove the main bearings and thrust bearings from the cylinder block and main bearing caps.
    • When removing them, note the direction and position. Keep them in the correct order for installation.
scientia non olet · About LEMON Manuals