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Disassembly And Assembly: Assembly

WARNING: This page is about a different car, the 2016 Infiniti QX50. However, it is still accessible from the selected car via links, so may be relevant.
CAUTION:

Do not reuse washers.

  1. Fully air-blow engine coolant and engine oil passages in cylinder block, cylinder bore and crankcase to remove any foreign material.
    CAUTION:

    Use goggles to protect your eyes.

  2. Install each plug to cylinder block as shown in the illustration.
    G05207327Courtesy of NISSAN NORTH AMERICA, INC.
    3 : Plug
    ARROW : Engine front
    • Apply sealant to the thread of water drain plug (1).

      Use Genuine RTV Silicone Sealant or equivalent. Refer to  RECOMMENDED CHEMICAL PRODUCTS AND SEALANTS  . 

    • Apply sealant to the thread of plug (4).

      Use Genuine High Strength Thread Locking Sealant or equivalent. Refer to  RECOMMENDED CHEMICAL PRODUCTS AND SEALANTS  . 

    • Replace washers (2) with new ones.
      CAUTION:

      Do not reuse washers.

    • Tighten each plug as specified below.

      Unit: Nm (kg-m, ft-lb)

      Part Washer Tightening torque
      1 No 19.6 (2.0, 14)
      3 Yes 78.0 (8.0, 58)
      4 Yes 12.3 (1.3, 9)
  3. Install oil jet.
    • Insert oil jet dowel pin (A) into cylinder block dowel pin hole, and tighten mounting bolts.
      G05207394Courtesy of NISSAN NORTH AMERICA, INC.
      ARROW : Engine front
  4. Install main bearings and thrust bearings as follows:
    CAUTION:

    Never drop main bearing, and to scratch the surface.

    1. Remove dust, dirt, and engine oil on bearing mating surfaces of cylinder block and lower cylinder block.
    2. Install thrust bearings (1) to both sides of the No. 3 journal housing on cylinder block.
      G05207395Courtesy of NISSAN NORTH AMERICA, INC.
      A : No. 1
      B : No. 2
      C : No. 3
      D : No. 4
      F : Thrust bearing installation position
      ARROW : Engine front
      • Install thrust bearings with the oil groove (E) facing crankshaft arm (outside).
    3. Install main bearings paying attention to the direction.
      G05207396Courtesy of NISSAN NORTH AMERICA, INC.
      A : Cylinder block side
      D : Lower cylinder block side
      ARROW : Engine front
      • Main bearing with oil hole (B) and groove (C) goes on cylinder block. The one without them goes on lower cylinder block.
      • Before installing main bearings, apply engine oil to the bearing surface (inside). Do not apply engine oil to the back surface, but thoroughly clean it.
      • When installing, align main bearing stopper protrusion to cutout of cylinder block and lower cylinder block.
      • Ensure the oil holes on cylinder block and those on the corresponding bearing are aligned.
  5. Install crankshaft to cylinder block.
    • While turning crankshaft by hand, check that it turns smoothly.
  6. Install lower cylinder block.
    NOTE:

    Lower cylinder block cannot be replaced as a single part, because it is machined together with cylinder block.

    • Apply a continuous bead of liquid gasket with the tube presser (commercial service tool) to lower cylinder block as shown in the illustration.
      G06294534Courtesy of NISSAN NORTH AMERICA, INC.
      B : Apply to end
      a : π4.0 - 5.0 mm (0.157 - 0.197 in)

      Use Genuine RTV Silicone Sealant or equivalent. Refer to RECOMMENDED CHEMICAL PRODUCTS AND SEALANTS .

  7. Inspect the outer diameter of lower cylinder block bolt. Refer to INSPECTION .
  8. Install lower cylinder block bolts in numerical order as shown in the illustration as follows:
    1. Apply new engine oil to threads and seat surfaces of lower cylinder block bolts.
    2. Tighten bolts (No. 17 to 26) in numerical order as shown in the illustration.
      G05207391Courtesy of NISSAN NORTH AMERICA, INC.
      ARROW : Engine front
      BOLT : 25.0 N•m (2.6 kg-m, 18 ft-lb)
    3. Repeat step b.
    4. Tighten bolts (No. 1 to 16) in numerical order as shown in the illustration.
      G05207391Courtesy of NISSAN NORTH AMERICA, INC.
      ARROW : Engine front
      NOTE:

      Use TORX socket for bolts No. 1 to 16.

      BOLT : 35.3 N•m (3.6 kg-m, 26 ft-lb)
    5. Turn bolts (No. 1 to 16) 90 degrees clockwise (angle tightening).
      CAUTION:

      Use the angle wrench [SST: KV10112100 (BT8653-A)] (A) to check tightening angle. Never make judgment by visual inspection.

      G05207399Courtesy of NISSAN NORTH AMERICA, INC.
      • After installing lower cylinder block bolts, check that crankshaft can be rotated smoothly by hand.
      • Check the crankshaft end play. Refer to INSPECTION .
  9. Install piston to connecting rod as follows:
    1. Using snap ring pliers, install new snap ring to the groove of piston rear side.
      • Insert it fully into groove to install.
    2. Install piston to connecting rod.
      • Using an industrial use dryer or similar tool, heat piston until piston pin can be pushed in by hand without excess force [approximately 60 to 70°C (140 to 158°F)]. From the front to the rear, insert piston pin into piston and connecting rod.
      • Assemble so that the front mark on the piston head and the cylinder number on connecting rod are positioned as shown in the illustration.
        GNSJPBIA1213ZZ-213Courtesy of NISSAN NORTH AMERICA, INC.
        A : Example RH
        B : Piston grade number
        C : Front mark
        D : Pin grade number
        E : Cylinder number
        F : Front mark
        ARROW : Engine front
    3. Install new snap ring to the groove of the piston front side.
      • Insert it fully into groove to install.
      • After installing, check that connecting rod moves smoothly.
  10. Using a piston ring expander (commercial service tool) (A), install piston rings.
    G05207387Courtesy of NISSAN NORTH AMERICA, INC.
    CAUTION:
    • When installing piston rings, be careful not to damage piston.
    • Never damage piston rings by expending them excessively.
    • If there is stamped mark on ring, mount it with marked side up.
      G05733022Courtesy of NISSAN NORTH AMERICA, INC.
      Stamped mark:  
      Top ring (A) : 1 N
      Second ring (B) : 2 N
    • Position each ring with the gap as shown in the illustration referring to the piston front mark (D).
      G05207403Courtesy of NISSAN NORTH AMERICA, INC.
      C : Top ring gap
      E : Oil ring upper or lower rail gap (either of them)
      F : Second ring and oil ring spacer gap
      a : 90 degrees
      b : 45 degrees
    • Check the piston ring side clearance. Refer to INSPECTION .
  11. Install connecting rod bearings to connecting rod and connecting rod bearing cap.
    CAUTION:

    Never drop connecting rod bearing, and to scratch the surface.

    • Before installing connecting rod bearings, apply engine oil to the bearing surface (inside). Do not apply engine oil to the back surface, but thoroughly clean it.
    • When installing, align connecting rod bearing stopper protrusion (B) with cutout (C) of connecting rods and connecting rod bearing caps to install.
      G05207404Courtesy of NISSAN NORTH AMERICA, INC.
    • Ensure the oil hole (A) on connecting rod and that on the corresponding bearing are aligned.
  12. Install piston and connecting rod assembly to crankshaft.
    • Position crankshaft pin corresponding to connecting rod to be installed onto the bottom dead center.
    • Apply engine oil sufficiently to the cylinder bore, piston and crankshaft pin journal.
    • Match the cylinder position with the cylinder number on connecting rod to install.
    • Be sure that front mark on piston crown is facing the front of the engine.
    • Using a piston ring compressor [SST: EM03470000 (J-8037)] (A) or suitable tool, install piston with the front mark on the piston crown facing the front of the engine.
      G05207405Courtesy of NISSAN NORTH AMERICA, INC.
    CAUTION:

    Never damage the cylinder wall and crankshaft pin, resulting from an interference of the connecting rod big end.

  13. Install connecting rod bearing cap.
    • Match the stamped cylinder number marks on connecting rod with those on connecting rod bearing cap to install.
      G00479797Courtesy of NISSAN NORTH AMERICA, INC.
      A : Sample codes
      B : Bearing stopper groove
      C : Small-end diameter grade
      D : Big - end diameter grade
      E : Weight grade
      F : Cylinder No.
      G : Management code
      I : Management code
    • Be sure that front mark (H) on connecting rod bearing cap is facing the front of the engine.
  14. Tighten connecting rod bolt as follows:
    1. Inspect the outer diameter of connecting rod bolt. Refer to INSPECTION .
    2. Apply engine oil to the threads and seats of connecting rod bolts.
    3. Tighten connecting rod bolts.
      BOLT : 28.4 N•m (2.9 kg-m, 21 ft-lb)
    4. Completely loosen connecting rod bolts.
      BOLT : 0 N•m (0 kg-m, 0 ft-lb)
    5. Tighten connecting rod bolts.
      BOLT : 24.5 N•m (2.5 kg-m, 18 ft-lb)
    6. Then turn connecting rod bolts 90 degrees clockwise (angle tightening).
      CAUTION:

      Always use the angle wrench [SST: KV10112100 (BT8653-A)] (A). Never make judgment by visual inspection.

      G05207407Courtesy of NISSAN NORTH AMERICA, INC.
      • After tightening connecting rod bolts, check that crankshaft rotates smoothly.
      • Check the connecting rod side clearance. Refer to INSPECTION .
  15. Install baffle plate.
  16. Install new rear oil seal. Refer to REMOVAL AND INSTALLATION .
    • Apply new engine oil to both oil seal lip and dust seal lip.
  17. Install pilot converter.
    G04146804Courtesy of NISSAN NORTH AMERICA, INC.
    • With a drift of the following outer diameter, press-fit as far as it will go.
      Pilot converter : Approx. 33 mm (1.30 in)
    • Press-fit pilot converter with its chamfer facing crankshaft as shown in the illustration.
      G05207409Courtesy of NISSAN NORTH AMERICA, INC.
      ARROW : Crankshaft side
  18. Install knock sensors.
    G05207411Courtesy of NISSAN NORTH AMERICA, INC.
    A : Bank 1
    B : Bank 2
    ARROW : Engine front
    • Install knock sensor so that connector faces the rear of the engine.
    • After installing knock sensor, connect harness connector, and lay it out to rear of the engine.
    CAUTION:
    • Never tighten mounting bolts while holding connector.
    • If any impact by dropping is applied to knock sensor, replace it with new one.
    NOTE:
    • Check that there is no foreign material on the cylinder block mating surface and the back surface of knock sensor.
    • Check that knock sensor does not interfere with other parts.
  19. Note the following, assemble in the reverse order of disassembly after this step.

    Drive plate

    • When installing drive plate to crankshaft, be sure to correctly align crankshaft side dowel pin and drive plate side dowel pin hole.
      CAUTION:

      If these are not aligned correctly, engine runs roughly and "MIL" illuminates.

    • Install drive plate (2) and reinforcement plate (3) as shown in the illustration.
      G05207414Courtesy of NISSAN NORTH AMERICA, INC.
      1 : Ring gear
      4 : Pilot converter
      5 : Crankshaft
      A : Rounded
      ARROW : Engine front
    • Holding ring gear with the ring gear stopper [SST: KV10118600 (J - 48641)].
    • Tighten the mounting bolts crosswise over several times.
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