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Home >> Infiniti >> 2015 >> QX60 Base, AWD >> Repair and Diagnosis >> Engine Mechanical >> Engine Mechanical (Except Hybrid) >> Unit Disassembly And Assembly >> Cylinder Block >> Disassembly And Assembly >> Assembly

Disassembly And Assembly: Assembly

  1. Blow out the engine coolant and engine oil passages and cylinder bore to remove any foreign materials.
    CAUTION:

    Use goggles to protect your eyes.

  2. Install the cylinder block drain plugs (if removed).
    Fig 1: Identifying Cylinder Block Drain Plugs
    G09404249Courtesy of NISSAN NORTH AMERICA, INC.
    • Apply sealant to the thread of the water drain plug (B), connector bolt (C) and water drain plug (D), (if removed).
      CAUTION:

      Do not reuse copper sealing washers.

      ARROW : Front
      NOTE:
      • For Canada, water drain plug (B) is a block heater, not a water drain plug.
      • Install copper sealing washers (E) and (A), (if removed).
      • Use Genuine High Performance Thread Sealant or equivalent. Refer to RECOMMENDED CHEMICAL PRODUCTS AND SEALANTS .
    • Tighten each plug and connector bolt to specifications.
      Part Washer Tightening torque
      (B) (except Canada) Yes 62.0 N•m (6.3 kg-m, 46 ft-lb)
      (B) (for Canada) Yes 39.0 N•m (4.0 kg-m, 29 ft-lb)
      (C) Yes 27.0 N•m (2..8 kg-m, 20 ft-lb)
      (D) Yes 78.0 N•m (8.0 kg-m, 58 ft-lb)
  3. Install the oil jets.
    Fig 2: Inserting Oil Jet Dowel Pin Into Cylinder Block Dowel Pin Hole
    G04073109Courtesy of NISSAN NORTH AMERICA, INC.
    • Insert the oil jet dowel pin into the cylinder block dowel pin hole, and tighten the bolts.
  4. Install the main bearings and the thrust bearings.
    Fig 3: Identifying Thrust Bearing Installation Position
    G04073110Courtesy of NISSAN NORTH AMERICA, INC.
    1. Remove dust, dirt, and oil on the bearing mating surfaces of the cylinder block and the main bearing cap.
    2. Install the thrust bearings to both sides of the No. 3 journal housing on the cylinder block and the main bearing cap.
      • Install the thrust bearings with the oil groove facing the crankshaft arm (outside).
      • Install bearing with a projection on one end on cylinder block and bearing with a projection at center on cap. Align each projection with mating notch.
  5. Set the upper main bearings in their proper positions on the cylinder block.
    Fig 4: Identifying Main Bearing Positions
    G04119305Courtesy of NISSAN NORTH AMERICA, INC.
    • Confirm the correct main bearings are used. Refer to INSPECTION .
  6. Instructions for the re-use of the main bearing cap bolts.
    Fig 5: Identifying Main Bearing Cap Bolts Dimension
    G04159888Courtesy of NISSAN NORTH AMERICA, INC.
    • A plastic zone tightening method is used for tightening the main bearing cap bolts. Measure (d1) and (d2) as shown in the illustration.
    • For (d2), select the minimum diameter in the measuring area.
    • If the difference between (d1) and (d2) exceeds the limit, replace the bolts for assembly.
    Limit (d1 - d2) : 0.11 mm (0.0043 in)
  7. After installing the crankshaft, lower main bearings, main bearing caps, main bearing beam, and bearing cap bolts. Tighten the bearing cap bolts in the numerical order as shown in the illustration.
    Fig 6: Main Bearing Cap Bolt Tightening Sequence
    G04159889Courtesy of NISSAN NORTH AMERICA, INC.
    1. Make sure that the front marks on the main bearing beam faces the front of the engine.
      Fig 7: Bearing Cap Orientation
      G04073112Courtesy of NISSAN NORTH AMERICA, INC.
    2. Prior to tightening all the bearing cap bolts, place the bearing beam in its proper position by shifting the crankshaft in the axial position.
    3. After tightening the bearing cap bolts, make sure the crankshaft turns smoothly.
    4. Lubricate the threads and seat surfaces of the bolts with new engine oil.
    5. Tighten the bolts in two stages:
    CAUTION:

    Measure the tightening angle in two stages using Tool. Do not measure with eyes only, be sure to use Tool.

    Fig 8: Checking Tightening Angle Of Main Bearing Cap Bolts
    G04073394Courtesy of NISSAN NORTH AMERICA, INC.
    Stage 1 : 32.3 - 38.3 N•m (3.3 - 3.9 kg-m, 24 - 28 ft-lb)
    Stage 2 : 90° - 95° degrees clockwise
    Tool number : KV10112100 (BT-8653-A)
  8. Measure crankshaft end play.
    • If beyond the limit, replace the thrust bearing with a new one.
      Fig 9: Checking Crankshaft End Play
      G04159892Courtesy of NISSAN NORTH AMERICA, INC.
    Standard : 0.10 - 0.25 mm (0.0039 - 0.0098 in)
    Limit : 0.30 mm (0.0118 in)
  9. Install the piston to the connecting rod.
    Fig 10: Installing Piston To Connecting Rod
    G04886163Courtesy of NISSAN NORTH AMERICA, INC.
    1. Using suitable snap ring pliers, install the snap ring fully into the pin-groove of the piston rear side.
      CAUTION:

      Do not reuse snap rings.

      (A) : Piston front mark
      (B) : Oil hole
      (C) : Connecting rod front mark
      (D) : Cylinder No.
    2. Install the piston to the connecting rod.
      • Heat the piston until the piston pin can be pushed in by hand without excess force [approx. 60 - 70°C (140 - 158°F)]. From the front to the rear, insert the piston pin into the piston and through the connecting rod.
        Fig 11: Heating Piston
        G04159881Courtesy of NISSAN NORTH AMERICA, INC.
        WARNING:

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

      • Assemble so that the piston front mark (B) on the crown and the oil hole (C), connecting rod front mark (D) and Cylinder No. (E) on the connecting rod are positioned as shown in the illustration.
        Fig 12: Orientation Of Markings On Piston And Connecting Rod
        G08912534Courtesy of NISSAN NORTH AMERICA, INC.
        ARROW : Engine front
        (A) : Piston grade number
        (F) : Pin grade number
        (G) : Crown I.D. code
    3. Install the snap ring into the front of the piston pin-groove.
      Fig 13: Removing Snap Ring
      G04132335Courtesy of NISSAN NORTH AMERICA, INC.
      • After installing, check that the connecting rod pivots smoothly on the pin.
        CAUTION:

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

  10. Using a piston ring expander, install the piston rings.
    Fig 14: Identifying Stamped Mark On Ring
    G05207402Courtesy of NISSAN NORTH AMERICA, INC.
    (A) : Top ring
    (B) : Second ring
    CAUTION:
    • Be careful not to damage the piston.
    • When the piston rings are not replaced, remount the rings in their original positions.
    • When replacing the piston rings, those without stamped surface (A) can be mounted either side up.
    • Install the second ring with the stamped surface (B) facing upward. If the ring is not stamped it can face in either direction.
    • Position each ring with the gap as shown in the illustration, referring to the piston front mark.
      Fig 15: Orientation Of Piston Ring Gaps
      G04073119Courtesy of NISSAN NORTH AMERICA, INC.
  11. Install the connecting rod bearings to the connecting rod and the connecting rod cap.
    Fig 16: Installing Connecting Rod Bearings To Connecting Rod And Cap
    G04132353Courtesy of NISSAN NORTH AMERICA, INC.
    • When installing the connecting rod bearings, apply engine oil to the bearing surface (crankshaft side). Do not apply oil to the back surface (connecting rod and cap side), but thoroughly clean it.
    • When installing, align the connecting rod bearing protrusion with the notch of the connecting rod to install.
    • Check that the engine oil holes on the connecting rod and on the corresponding bearing are aligned.
  12. Install the piston and connecting rod assembly into the corresponding cylinder.
    Fig 17: Installing Piston And Connecting Rod Assembly Into Cylinder
    G04886170Courtesy of NISSAN NORTH AMERICA, INC.
    • Position the crankshaft pin corresponding to the connecting rod to be installed onto the bottom dead center.
    • Apply engine oil sufficiently to the cylinder bore, piston, and crankshaft pin.
    • Match the cylinder position with the cylinder No. (B) on the connecting rod to install.
    • Install the piston with the piston front mark (A) on the crown facing the front of the engine (ARROW ) using a suitable tool.
      (C) : Engine oil hole
    CAUTION:

    Be careful not to damage the crankshaft pin and cylinder wall, resulting from interference of the connecting rod big end.

  13. Install the connecting rod cap.
    Fig 18: Checking Connecting Rod Bushing Oil Clearance (Small End)
    G04159902Courtesy of NISSAN NORTH AMERICA, INC.
    • Match the stamped cylinder number marks on the connecting rod with those on the cylinder cap for installation.
    • Install the piston connecting rod assembly and cap so that the front mark on the cap and piston are facing the front of the engine.
    • Lubricate the threads and seat surfaces with new engine oil. 
  14. Check the connecting rod cap bolts before reusing, then install in their original position in the connecting rod. The bolts should screw in smoothly by hand.
    Fig 19: Identifying Connecting Rod Cap Bolt Outer Diameter
    G04159903Courtesy of NISSAN NORTH AMERICA, INC.
    • Measure the outer diameter of the connecting rod cap bolt as shown in the illustration.
    Outer diameter (d) of the connecting rod bolt
    Standard : 7.90 - 8.00 mm (0.3110 - 0.3150 in)
    Limit : 7.75 mm (0.3051 in)
  15. Tighten the connecting rod nuts in two stages using Tool:
    Stage 1 : 19 - 21 N•m (1.9 - 2.1 kg-m, 14 - 15 ft-lb)
    Stage 2 : 90° - 95° degrees clockwise
    Fig 20: Measuring Connecting Rod Tightening Angle
    G04073123Courtesy of NISSAN NORTH AMERICA, INC.
    CAUTION:

    Always use either an angle wrench or protractor. Avoid tightening based on visual check alone.

    Tool number : KV10112100 (BT-8653-A)
    • Apply engine oil to the threads and seats of the connecting rod bolts and nuts.
    • After tightening the nuts, make sure that the crankshaft rotates smoothly.
    • Check the connecting rod side clearance. If beyond the limit, replace the connecting rod and/or crankshaft.
      Connecting rod side clearance:
      Standard : 0.20 - 0.35 mm (0.0079 - 0.0138 in)
      Limit : 0.40 mm (0.0157 in)
  16. Install the baffle plate to the main bearing beam.
  17. Install the knock sensor.
    Fig 21: Identifying Knock Sensor
    G04073127Courtesy of NISSAN NORTH AMERICA, INC.
    • Make sure that there is no foreign material on the cylinder block mating surface and the back surface of the knock sensor.
    • Install the knock sensor with the connector facing the rear of the engine.
    • Do not tighten the bolts while holding the connector.
    • Make sure that the knock sensor does not interfere with other parts.
    CAUTION:

    If any impact by dropping occurs to the knock sensor, replace it with new one.

  18. Install the cylinder head. Refer to REMOVAL AND INSTALLATION .
  19. Install the timing chain. Refer to REMOVAL AND INSTALLATION .
  20. Install the oil pan. Refer to REMOVAL AND INSTALLATION (UPPER OIL PAN) .
  21. Remove engine from the stand.
  22. Install the pilot converter with its chamfer facing crankshaft as shown in the illustration.
    Fig 22: Identifying Pilot Converter
    G05207409Courtesy of NISSAN NORTH AMERICA, INC.
    ARROW : Crankshaft side
  23. Install the rear oil seal retainer using Tool (A).
    Fig 23: Installing Rear Oil Seal Retainer Using Tool
    G06554713Courtesy of NISSAN NORTH AMERICA, INC.
    Tool number (A) : - (J-47128)
    1. Loosen the wing nut (B) on the end of the Tool (A).
    2. Insert the arbor (D) into the crankshaft pilot hole until the outer lip (C) of the Tool (A) covers the edge of the crankshaft sealing surface.
    3. Tighten the wing nut (B) to secure the Tool (A) to the crankshaft.
    4. Apply sealant to rear oil seal retainer as shown in the illustration.
      Fig 24: Liquid Gasket Application Area
      G00465467Courtesy of NISSAN NORTH AMERICA, INC.

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

      CAUTION:
      • Installation should be done within 5 minutes after applying liquid gasket.
      • Do not fill the engine with engine oil for at least 30 minutes after the components are installed to allow the sealant to cure.
    5. Lubricate the sealing surface of the new rear main seal with new engine oil.
    6. Slide the new rear main seal (1) over the Tool (A) and onto the crankshaft.
      Fig 25: Sliding Rear Main Seal
      G06554715Courtesy of NISSAN NORTH AMERICA, INC.
    7. Loosen the wing nut and push the threaded rod into the handle to remove the Tool (A).
    8. Tighten the rear oil seal retainer bolts to specification. Refer to REMOVAL AND INSTALLATION OF REAR OIL SEAL .
  24. Install the drive plate. Refer to DOWEL PIN ALIGNMENT .
  25. Install the engine assembly into the vehicle. Refer to REMOVAL AND INSTALLATION  (FWD) or REMOVAL AND INSTALLATION  (AWD).
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