LEMON Manuals: Even more car manuals for everyone
Home >> Infiniti >> 2018 >> Q70 5.6 Luxe, RWD >> Repair and Diagnosis >> Engine Mechanical >> Mechanical >> Engine Mechanical (5.6L) (Except Hybrid) >> Unit Disassembly And Assembly >> Cylinder Block >> Disassembly and Assembly >> Disassembly

Disassembly and Assembly: Disassembly

  1. Remove the following parts:
  2. Remove knock sensor.
    CAUTION: Carefully handle knock sensor avoiding shocks.
  3. Remove oil filter (for VVEL ladder assembly) from cylinder block, if necessary. Refer to Exploded View .
  4. Remove piston and connecting rod assembly as per the following:
    • Before removing piston and connecting rod assembly, check the connecting rod side clearance. Refer to Inspection .
    CAUTION: Be careful not to drop connecting rod bearing, and to scratch the surface.
    1. Position crankshaft pin corresponding to connecting rod to be removed onto the bottom dead center.
    2. Loosen mounting bolts, and remove connecting rod bearing cap.
    3. Using a hammer handle (A) or similar tool, push piston and connecting rod assembly out to the cylinder head side.
      GNSJPBIA2475Z-475Courtesy of NISSAN NORTH AMERICA, INC.
      CAUTION: Be careful not to damage the cylinder wall and crankshaft pin, resulting from an interference of the connecting rod big end.
  5. Remove connecting rod bearings from connecting rod and connecting rod bearing cap.
    CAUTION:
    • Be careful not to drop connecting rod bearing, and to scratch the surface.
    • Identify installation positions, and store them without mixing them up.
  6. Remove piston rings from piston.
    • Before removing piston rings, check the piston ring side clearance. Refer to Inspection .
    • Use a piston ring expander (commercial service tool) (A).
      GNSJPBIA0194Z-194Courtesy of NISSAN NORTH AMERICA, INC.
    CAUTION:
    • When removing piston rings, be careful not to damage piston.
    • Be careful not to damage piston rings by expanding them excessively.
  7. Remove piston from connecting rod as per the following:
    1. Using snap ring pliers (A), remove snap rings.
      GNSJPBIA0195Z-195Courtesy of NISSAN NORTH AMERICA, INC.
    2. Heat piston to 60 to 70 deg. C (140 to 158 deg. F) with an industrial use dryer (A) or an equivalent.
      GNSJPBIA0196Z-196Courtesy of NISSAN NORTH AMERICA, INC.
    3. Push out piston pin using a stick that has an outer diameter of approximately 20 mm (0.79 in).
      G04073104Courtesy of NISSAN NORTH AMERICA, INC.
  8. Remove rear oil seal and rear oil seal retainer assembly from cylinder block.
    • Insert screwdriver or similar tool between rear end of crankshaft counter weight and rear oil seal retainer, and separate liquid gasket to remove.
      CAUTION: Be careful not to damage the mating surfaces.
  9. Using screwdriver or similar tool, and lever off rear oil seal from rear oil seal retainer.
  10. Remove main bearing cap as per the following:
    • Before loosening cylinder block bolts, measure the crankshaft end play. Refer to Inspection .
    1. Loosen side bolts starting from No. 30 to 21 to remove.
      GNSJPBIA2146Z-146Courtesy of NISSAN NORTH AMERICA, INC.

      SYMBOL

      : Engine front
    2. Loosen main bearing cap sub bolts starting from No. 20 to 11 to remove.
    3. Loosen main bearing cap bolts starting from No. 10 to 1 to remove.
    4. Remove the main bearing cap.
      • Insert bolts (1) into bolt holes, and then remove main bearing cap (2) by lifting up and shaking forward and backward.
        GNSJPBIA2478Z-478Courtesy of NISSAN NORTH AMERICA, INC.
      CAUTION: Be careful not to damage the mounting surface.
  11. Remove crankshaft.
  12. Remove main bearings and thrust bearings from main bearing cap and cylinder block.
    CAUTION:
    • Be careful not to drop main bearing, and to scratch the surface.
    • Identify installation positions, and store them without mixing them up.
  13. Remove pilot converter using the pilot bushing puller (commercial service tool), if necessary.
  14. Remove oil jet.
scientia non olet · About LEMON Manuals