Disassembly and Assembly: Assembly

1. Fully air-blow engine coolant and engine oil passages in cylinder block, cylinder bore and crankcase to remove any foreign material.
   CAUTION: Use a goggles to protect your eye.
2. Install each plug to cylinder block as shown in the figure below.
   Fig 1: Identifying Water Drain Plug, Washer And Connector Bolt

   Courtesy of NISSAN NORTH AMERICA, INC.
   CAUTION: Do not reuse washers.
   • Apply sealant to the thread of water drain plug (A).

     Use Anaerobic Liquid Gasket or equivalent. Refer to  "RECOMMENDED CHEMICAL PRODUCTS AND SEALANTS ".

     NOTE: For Canada, water drain plug (A) in the figure is not water drain plug but block heater. Refer to "EXPLODED VIEW ".
   • Apply sealant to the thread of connector bolt (D).

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

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

     Use genuine high strength thread locking sealant or equivalent. Refer to  "RECOMMENDED CHEMICAL PRODUCTS AND SEALANTS ".

   • Replace washers with new one.
   • Tighten each plug and connector bolt as specified below.

   Part	Washer	Tightening torque
   A	Yes	62.0 N.m (6.3 kg-m, 46 ft-lb)
   B	No	9.8 N.m (1.0 kg-m, 87 in-lb)
   C	Yes	62.0 N.m (6.3 kg-m, 46 ft-lb)
   D	No	39.2 N.m (4.0 kg-m, 29 ft-lb)

3. Install oil jet.
   • Insert oil jet dowel pin (A) into cylinder block dowel pin hole, and tighten mounting bolts.
   Fig 2: Identifying Oil Jet Dowel Pin

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4. Install main bearings and thrust bearings as follows:
   CAUTION: Be careful not to drop main bearing, and to scratch the surface.
   1. Remove dust, dirt, and engine oil on bearing mating surfaces of cylinder block and main bearing caps.
   2. Install thrust bearings (1) to the both sides of the No. 3 journal housing on cylinder block and main bearing cap.
      Fig 3: Identifying Thrust Bearings And Main Bearing Caps

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      • Install thrust bearings with the oil groove (E) facing crankshaft arm (outside).
      • Install thrust bearing with a projection on one end on cylinder block, and thrust bearing with a projection at center on main bearing cap. Align each projection with mating notch.
   3. Install main bearings paying attention to the direction.
   • Main bearing with oil hole (B) and groove (C) goes on cylinder block. The one without them goes on main bearing cap.
     Fig 4: Identifying Main Bearing With Oil Hole And Groove

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   • 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 main bearing caps.
   • 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 main bearing caps.
   • Main bearing caps are identified by identification mark cast on them. For installation, face front mark (E) to front side.
   Fig 5: Identifying Front Mark On Main Bearing Caps

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   NOTE: Main bearing cap cannot be replaced as a single part, because it is machined together with cylinder block.
7. Install main bearing beam.
   • Install main bearing beam with front mark facing downward (oil pan side).
   • Install main bearing beam with front mark facing front of the engine.
   Fig 6: Identifying Main Bearing Beam

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8. Install main bearing cap bolts in numerical order as shown in the figure below as follows:
   Fig 7: Main Bearing Cap Bolts Tightening Sequence (Reverse For Loosening)

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   1. Inspect the outer diameter of main bearing cap bolt. Refer to "INSPECTION ".
   2. Apply new engine oil to threads and seat surfaces of main bearing cap bolts.
   3. Tighten main bearing cap bolts in several different steps.

      Torque: 35.3 N.m (3.6 kg-m, 26 ft-lb) 

   4. Turn all main bearing cap bolts 90 degrees clockwise (angle tightening).
      CAUTION: Use the angle wrench [SST: KV10112100 (BT8653-A)] to check tightening angle. Never make judgment by visual inspection.
      • After installing main bearing cap bolts, check that crankshaft can be rotated smoothly by hand.
      • Check the crankshaft end play. Refer to "INSPECTION ".
      Fig 8: Checking Main Bearing Cap Bolts Angle Using Angle Wrench

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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 drier 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 crown and the cylinder number on connecting rod are positioned as shown in the figure below.
   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.
      Fig 9: Identifying Cylinder Number And Piston Grade Number

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10. Using a piston ring expander (commercial service tool) (A), install piston rings.
    CAUTION:

    • When installing piston rings, be careful not to damage piston.
    • Be careful not to damage piston rings by expending them excessively.
    Fig 10: Removing/Installing Piston Ring Using Piston Ring Expander

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    • If there is stamped mark on ring, mount it with marked side up.
      NOTE: If there is no stamp on ring, no specific orientation is required for installation.

      Stamped mark: 

      Top ring (A): - 

      Second ring (B): 2 R 

      Fig 11: Identifying Piston Rings

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    • Position each ring with the gap as shown in the figure below referring to the piston front mark (D).
      Fig 12: Identifying Piston Ring Gaps

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    • Check the piston rings side clearance. Refer to "INSPECTION ".
11. Install connecting rod bearings to connecting rod and connecting rod bearing cap.
    CAUTION: Be careful not to 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 rod and connecting rod bearing cap to install.
    • Ensure the oil hole (A) on connecting rod and that on the corresponding bearing are aligned.
    Fig 13: Identifying Connecting Rod Bearing Stopper Protrusion With Cutout And Oil Hole

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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 front of 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.
      CAUTION: Be careful not to damage the cylinder wall and crankshaft pin, resulting from an interference of the connecting rod big end.
      Fig 14: Installing Piston Using Piston Ring Compressor

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13. Install connecting rod bearing cap.
    • Match the stamped cylinder number marks on connecting rod with those on connecting rod bearing cap to install.
      Fig 15: Identifying Codes, Grades And Stamped Marks On Connecting Rod

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    • Be sure that front mark (H) on connecting rod bearing cap is facing 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.

       Torque: 19.6 N.m (2.0 kg-m, 14 ft-lb) 

    4. Then tighten all connecting rod bolts 90 degrees clockwise (angle tightening).
       CAUTION: Always use the angle wrench [SST: KV10112100 (BT8653-A)]. Avoid tightening based on visual check alone.
       • After tightening connecting rod bolts, check that crankshaft rotates smoothly.
       • Check the connecting rod side clearance. Refer to "INSPECTION ".
       Fig 16: Measuring Connecting Rod Bolts Angle Using Angle Wrench

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15. Install baffle plate to main bearing beam.
16. Install new rear oil seal retainer to cylinder block. Refer to "REAR OIL SEAL: REMOVAL AND INSTALLATION ".
17. Install pilot converter.
    • With drift [outer diameter: approximately 33 mm (1.30 in)], press-fit as far as it will go.
      Fig 17: Installing Pilot Converter Using Drift

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    • Press-fit pilot converter with its chamfer facing crankshaft as shown in the figure below.
    Fig 18: Identifying Pilot Converter With Chamfer Facing

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18. Install knock sensors.
    • Install knock sensor so that connector faces the rear of the engine.
      Fig 19: Identifying Knock Sensors

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    • After installing knock sensor, connect harness connector, and lay it out to rear of 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.
  • If these are not aligned correctly, engine runs roughly and "MIL" turns on.
• Install drive plate (2) and reinforcement plate (3) as shown in the figure below.
  Fig 20: Identifying Drive Plate, Reinforcement Plate, Ring Gear, Pilot Converter And Crankshaft

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• Holding ring gear with the pulley holder (commercial service tool).
• Tighten mounting bolts crosswise over several times.