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Disassembly and Assembly: Assembly

WARNING: This page is about a different car, the 2018 Nissan Titan XD. However, it is still accessible from the selected car via links, so may be relevant.
  1. Fully air-blow the coolant and oil passages in the cylinder block, cylinder bore, and crankcase to remove any foreign material.
    WARNING: When using compressed air for cleaning, to avoid the risk of personal injury from flying debris and dirt:
    • Do not exceed 207 kPa (2.111 kg/cm 2 , 30 psi).
    • Wear appropriate eye protection and protective clothing including gloves.
  2. Install all drain plug (4) and welch plugs (1) and (5) into the cylinder block.
    GNSAWBIA0104Z-104Courtesy of NISSAN NORTH AMERICA, INC.
    CAUTION: Do not reuse the O-rings.

    (2)

    : Oil cooler

    (3)

    : Spacer

    SYMBOL

    : Front
  3. Install the oil jet (1) and tighten the bolt (A) to the specified torque.
    GNSALBIA2619Z-619Courtesy of NISSAN NORTH AMERICA, INC.
    CAUTION: Slight bending of oil jets can cause severe engine damage. replace oil jet if it is bent or damaged during disassembly or assembly.
    • When using a new oil jet and bolt:

      Bolt (A)

      : 36 N.m (3.7 kg-m, 27 ft-lb)
    • When using an existing oil jet and bolt:

      Bolt (A)

      : 24 N.m (2.4 kg-m, 18 ft-lb)
  4. Install the main bearings (upper), thrust bearing and crankshaft using the following procedure:
    1. Remove dust, dirt and engine oil on the main bearing mating surfaces of the cylinder block.
      CAUTION: To avoid possible engine damage, do not lubricate the backside of the main bearing that contacts the main bearing cap or main bearing journal.
      NOTE:
      • Make sure the main bearing being installed is the same size as the main bearing removed, if the crankshaft has not been machined. The size is engraved on the back of the main bearing.
      • The main bearings (upper) and main bearings (lower) are not interchangeable. The backs of the main bearings are marked with proper location.
    2. Install the main bearings [upper (1)] and thrust bearing (2) into the cylinder block.
      GNSALBIA2547Z-547Courtesy of NISSAN NORTH AMERICA, INC.
      NOTE:
      • Before installing main bearings, apply Lubriplate ® #4 to the bearing surface (inside). If not available, Lubriplate ® #105 or new engine oil can be used to lubricate the crankshaft-side of the main bearings [upper (1)], main bearings (lower) and thrust bearing surfaces.
      • This engine has a pair of 180 degree thrust bearings (2) which are installed in the number 3 main bearing (upper) position.
    3. Install the crankshaft (1) with suitable tool (A).
      GNSALBIA2546Z-546Courtesy of NISSAN NORTH AMERICA, INC.
      WARNING: To avoid the risk of personal injury, use lifting equipment or acquire assistance when lifting components or assemblies that weight more than 23 kg (50 lbs).
      NOTE: Lower the crankshaft straight down to avoid damage to the crankshaft and cylinder block.
    4. Remove suitable bolts or dowels from the crankshaft.

      (B)

      : Vibration damper attachment holes

      (C)

      : Flexplate attachment holes
  5. Install the main bearings [lower (1)] using the following procedure:
    1. Remove dust, dirt and engine oil on the main bearing mating surfaces of the main bearing cap.
    2. Install the main bearing [lower (1)] into the main bearing cap (2).
      GNSALBIA2599Z-599Courtesy of NISSAN NORTH AMERICA, INC.
      CAUTION: To avoid possible engine damage, do not lubricate the backside of the main bearing that contacts the main bearing cap or main bearing journal.
    3. Align the bearing stopper (A) on the main bearing (lower) (1) with the notch (B) in the main bearing cap (2).
      NOTE: Before installing main bearings, apply Lubriplate ® #4 to the bearing surface (inside). If not available, Lubriplate ® #105 or new engine oil can be used to lubricate the crankshaft-side of the main bearings (upper), main bearings (lower) and thrust bearing surfaces.
  6. Install the main bearing caps using the following steps:
    CAUTION: To avoid possible engine damage, ensure main bearing caps are installed with the number towards the oil cooler side of the engine.
    1. Make sure the main bearing cap surfaces between the main bearing cap and block are clean and free of debris.
    2. Install the main bearing cap (1) aligning the main bearing cap bolt hole with the cylinder block threaded hole.
      GNSALBIA2602Z-602Courtesy of NISSAN NORTH AMERICA, INC.
      NOTE:
      • It may be necessary to gently tap the main bearing caps into location with a suitable tool.
      • Main bearing cap number 1 starts with the front of the cylinder block and each main bearing cap has an arrow which points to the front of the engine.
      • The bearing stopper in the main bearing saddle and main bearing cap must be on the same side.
    3. Install the main bearing caps.
    4. Lubricate the main bearing bolt threads and the underside of the bolt head with clean engine oil.
    5. Install the main bearing bolts (A) into the main bearing caps (1) and tighten to the specified torque.
      GNSALBIA2604Z-604Courtesy of NISSAN NORTH AMERICA, INC.
      NOTE: Do not tighten bolts (A) to the final torque until all main bearing caps are installed and bolts have been tightened to the specified torque.

      Main bearing cap bolts

      : 50 N.m (5.1 kg-m, 37 ft-lb)
    6. Check that the crankshaft rotates freely after installing main bearing caps.
    7. Tighten the main bearing cap bolts in the order shown to the specified torque.
      GNSALBIA2533Z-533Courtesy of NISSAN NORTH AMERICA, INC.
      • When using existing main bearing cap inner bolts:

        Step 1

        : Tighten inner bolts to 50 N.m (5.1 kg-m, 37 ft-lb)

        Step 2

        : Loosen inner bolts 90°

        Step 3

        : Tighten inner bolts to 95 N.m (9.7 kg-m, 70 ft-lb)

        Step 4

        : Tighten inner bolts 120°

        Step 5

        : Tighten outer bolts to 85 N.m (8.7 kg-m, 63 ft-lb)

        Step 6

        : Tighten outer bolts 90°
      • When using new main bearing cap inner bolts:

        Step 1

        : Tighten inner bolts to 50 N.m (5.1 kg-m, 37 ft-lb)

        Step 2

        : Loosen inner bolts 90°

        Step 3

        : Tighten inner bolts to 50 N.m (5.1 kg-m, 37 ft-lb)

        Step 4

        : Tighten inner bolts to 95 N.m (9.7 kg-m, 70 ft-lb)

        Step 5

        : Tighten inner bolts 120°

        Step 6

        : Tighten outer bolts to 85 N.m (8.7 kg-m, 63 ft-lb)

        Step 7

        : Tighten outer bolts 90°
      NOTE: New outer bolts do not have to go through a new main bearing bolt break-in procedure.
    8. Make sure that the crankshaft rotates freely after installing main bearing caps. If crankshaft does not rotate freely, check the following:
      • Confirm the correct main bearing caps were installed correctly.
      • Confirm the main bearing cap ring dowels or mounting surfaces were not damaged during installation.
      • Confirm the correct main bearings were installed.
    9. Check crankshaft end play. Refer to Inspection After Disassembly .
  7. Assemble the piston and connecting rod assembly using the following procedure:
    1. Use a suitable tool to install the snap ring (2) in the snap ring groove on one side of the piston (1).
      GNSALBIA2637Z-637Courtesy of NISSAN NORTH AMERICA, INC.
      CAUTION: Do not reuse the snap ring.
    2. Lubricate the piston pin (1) and piston pin bore (A) with clean engine oil.
      GNSALBIA2638Z-638Courtesy of NISSAN NORTH AMERICA, INC.
    3. Make note of the orientation of the piston (1) before assembly with the connecting rod.
      GNSALBIA2639Z-639Courtesy of NISSAN NORTH AMERICA, INC.
      CAUTION: To avoid engine damage, ensure the number on the connecting rod and connecting rod cap must match exactly. Connecting rods and connecting rod caps are not interchangeable.
      NOTE:
      • The pistons have an arrow on the crown to indicate the installed direction. The arrow always points to the front of the engine.
      • The two notches (A) on the bottom of the piston on the piston skirt are for oil jet clearance. They provide clearance regardless of the bank on which a piston is installed.
    4. The crankshaft end of the connecting rod has one side (A) that is wider than the other side (B).
      GNSALBIA2935Z-935Courtesy of NISSAN NORTH AMERICA, INC.
      NOTE:
      • The wide side of the connecting rods for cylinders 1, 3, 5, and 7 point toward the front of the engine.
      • The wide side of the connecting rods for cylinders 2, 4, 6, and 8 point toward the rear of the engine.
    5. Install the piston (1) onto the connecting rod (3) and insert the piston pin (2).
      GNSALBIA2636Z-636Courtesy of NISSAN NORTH AMERICA, INC.
      NOTE: Pistons do not require heating to install the pin, however, the pistons do need to be at room temperature or above.
    6. Install the second snap ring (2) into the piston (1).
      GNSALBIA2641Z-641Courtesy of NISSAN NORTH AMERICA, INC.
      CAUTION: Do not reuse the snap ring.
    7. Install the piston rings on the piston (1) using a suitable tool (A).
      GNSALBIA2644Z-644Courtesy of NISSAN NORTH AMERICA, INC.
      CAUTION: Do not damage piston rings by expanding them excessively.
      1. Make sure the piston rings are installed in the correct location.
        GNSALBIA1907Z-907Courtesy of NISSAN NORTH AMERICA, INC.
        CAUTION: Most piston rings look similar but have significant differences. Make sure the correct part number is being used for the engine.
        NOTE:
        • The top surfaces of the top ring (1) and second ring (2) are identified either with the word TOP or a supplier identification mark, such as a stamped dot. Assemble with the word TOP or the supplier mark facing upward.
        • The bottom, or oil ring (3), can be installed with either side facing upward.
      2. The two-piece oil ring must be installed with the expander ring (2) gap 180-degrees from the gap of the oil ring (1).
        GNSALBIA2643Z-643Courtesy of NISSAN NORTH AMERICA, INC.
      3. Position the oil ring expander (A) in the oil ring groove (B).
        GNSALBIA2645Z-645Courtesy of NISSAN NORTH AMERICA, INC.
      4. Install the oil ring, then the second ring and then the top ring.
  8. Install the piston and connecting rod assembly using the following procedure:
    1. Make sure the connecting rod and connecting rod cap surfaces are clean and free of debris.
    2. Before installing connecting rod bearings, apply Lubriplate ® #4 to the bearing surface. If not available, Lubriplate ® #105 or new engine oil can be used to lubricate the crankshaft-side of the connecting rod (upper) and connecting rod (lower) bearing surfaces.
    3. Install the connecting rod bearing [upper (1)] into the connecting rod (2).
      GNSAWBIA0125Z-125Courtesy of NISSAN NORTH AMERICA, INC.
      CAUTION: Do not lubricate the back side of the connecting rod bearings (upper) and connecting rod bearings (lower) that contacts the connecting rod cap.
      NOTE:
      • The bearing stopper (A) must be in the notch (B) of the rod. The end of the connecting rod bearing must be even with the connecting rod cap mounting surface.
      • The connecting rod bearings (upper) and connecting rod bearings (lower) are not interchangeable on fracture-split connecting rods.
      • If new connecting rod bearings are not used, the used connecting rod bearings must be installed on the same connecting rod and location from where they were removed.
    4. Lubricate the piston skirt (A), piston rings (1) and the cylinder block walls of the piston and connecting rod assembly being installed with clean engine oil.
      GNSALBIA2650Z-650Courtesy of NISSAN NORTH AMERICA, INC.
    5. Position the ring gaps (A) equally around the piston circumference as shown.
      GNSALBIA2651Z-651Courtesy of NISSAN NORTH AMERICA, INC.
      NOTE: The ring gap of each piston ring must not be aligned with the piston pin or with any other ring. If the ring gaps are not aligned correctly, the rings will not seal properly.
    6. Compress the piston rings using a suitable tool (A).
      GNSALBIA2652Z-652Courtesy of NISSAN NORTH AMERICA, INC.
    7. Rotate the crankshaft so the connecting rod journal for the piston and connecting rod assembly being installed is at bottom dead center.
    8. The orientation of the connecting rod (2) relative to the piston (1) is critical (shown in the illustration). Connecting rod (crank end) is wider on one side, the four right bank connecting rods will have the wider side facing the front face of block. The left bank connecting rods will have the wider sides facing the rear face of block.
      GNSALBIA2654Z-654Courtesy of NISSAN NORTH AMERICA, INC.
      CAUTION: Failure to follow this step will result in extensive engine damage.
      NOTE: The piston and connecting rod assembly must be installed with the correct orientation.
      1. To reduce the possibility of engine damage, the piston and connecting rod must be assembled with the proper orientation.
        • The piston has an arrow pointing toward the front of the engine.
        • The large end of the connecting rod has one side that is wider than the other.
        • The wide side of the connecting rods for cylinders 1, 3, 5, and 7 point toward the front of the engine.
        • The wide side of the connecting rods for cylinders 2, 4, 6, and 8 point toward the rear of the engine.
        • Align the front marking and/or arrow on the top of the piston so that it points towards the front of the engine. Insert the connecting rod through the cylinder bore until the ring compressor contacts the top of the cylinder block.
    9. Hold the suitable tool (A) against the cylinder block and push the piston (1) through the suitable tool and into the cylinder block bore.
      GNSALBIA2655Z-655Courtesy of NISSAN NORTH AMERICA, INC.
      NOTE:
      • Push the piston until the top ring is completely in the cylinder block bore.
      • If the piston does not move freely, remove the piston and inspect for broken or damaged rings.
    10. Carefully push the piston into the cylinder block bore while guiding the connecting rod to the crankshaft journal.
      CAUTION: Do not damage the oil jets when installing piston and connecting rod assembly. Misalignment of the oil stream can cause severe engine damage.
    11. Install the connecting rod bearing [lower (1)] in the connecting rod cap (2).
      GNSALBIA2657Z-657Courtesy of NISSAN NORTH AMERICA, INC.
      CAUTION: Do not lubricate the back side of the connecting rod bearings (upper) and connecting rod bearings (lower) that contacts the connecting rod cap.
      NOTE:
      • The bearing stopper (A) must be in the notch (B) of the connecting rod cap.
      • If new bearings are not used, the used bearings must be installed on the same connecting rod cap from which they were removed.
      • Before installing connecting rod bearings, apply Lubriplate ® #4 to the bearing surface. If not available, Lubriplate ® #105 or new engine oil can be used to lubricate the crankshaft-side of the connecting rod (upper) and connecting rod (lower) bearing surfaces.
      • Use clean engine oil to lubricate the connecting rod bolt threads and the underside of the connecting rod bolt head.
    12. Install the connecting rod cap (2) and hand-tighten the bolts (A).
      GNSALBIA2586Z-586Courtesy of NISSAN NORTH AMERICA, INC.
      CAUTION:
      • The contact surface between the connecting rod and connecting rod cap is a machined surface, do not damage these surfaces. To avoid possible damage to the connecting rod and connecting rod cap, do not set the cap down on the fracture split surface. If the fractured split surface is damaged, the connecting rod and connecting rod cap must be replaced.
      • If replacing one or more of the connecting rods, check the part number of the new connecting rod compared to the currently installed connecting rods. If the new part number does not match the old part number, replace all of the connecting rods with the latest part number. Do not mix connecting rod part numbers or engine damage could result.
      NOTE:
      • The connecting rod (1) and connecting rod cap (2) must have the same number and must be installed in the proper cylinder.
      • The connecting rod cap number and rod number must be on the same side of the connecting rod to prevent engine damage during engine operation.
    13. Tighten the bolts (A) to the specified torque in the order shown using suitable tool (B).
      GNSALBIA2587Z-587Courtesy of NISSAN NORTH AMERICA, INC.
      NOTE: If new bolts are used, the bolt threads should be burnished. To burnish the bolts, follow the torque sequence below, then loosen the bolts completely.

      Step 1

      : 40 N.m (4.1 kg-m, 30 ft-lb)

      Step 2

      : 40 N.m (4.1 kg-m, 30 ft-lb) + Tighten 60 Degrees

      (1)

      : Connecting rod cap
    14. After tightening connecting rod bolts, check that crankshaft rotates smoothly.
    15. Check the connecting rod side clearance and piston protrusion. Refer to Inspection After Disassembly .
  9. Installation of the remaining components is in the reverse order of removal.
    • If the crankshaft was removed and reinstalled, in CONSULT click the timing button in the Fuel or Timing System Table Reset in Work Support. Refer to CONSULT Function .
    • If the crankshaft was replaced, in CONSULT click the crank and timing button in the Fuel or Timing System Table Reset in Work Support. Refer to CONSULT Function .
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