Disassembly and Assembly: Assembly

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

• Insert the oil jet dowel pin into the cylinder block dowel pin hole, and tighten the bolts.
  Fig 1: Identifying Oil Jet Dowel Pin

  Courtesy of NISSAN MOTOR CO., U.S.A.

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.
   Fig 2: Identifying Thrust Bearing Installation Position

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   • 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.

• Confirm the correct main bearings are used. Refer to "INSPECTION ".

Fig 3: Identifying Main Bearings

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• A plastic zone tightening method is used for tightening the main bearing cap bolts. Measure d1 and d2 as shown.
• 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.
  Fig 4: Identifying Main Bearing Cap Bolts Dimension

  Courtesy of NISSAN MOTOR CO., U.S.A.

  Limit (d1 - d2): 0.11 mm (0.0043 in) 

Fig 5: Identifying Tightening Sequence Of Main Bearing Caps Bolts

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1. Make sure that the front marks on the main bearing beam faces the front of the engine.
   Fig 6: Identifying Front Marks On Main Bearing

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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:
   Fig 7: Measuring Angle Of Main Bearing Caps Bolts

   Courtesy of NISSAN MOTOR CO., U.S.A.
   CAUTION: Measure the tighten angle in stage 2 using Tool. Do not measure visually.

   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) 

Fig 8: Measuring Crankshaft End Play

Courtesy of NISSAN MOTOR CO., U.S.A.

• If beyond the limit, replace the bearing with a new one.

Standard: 0.10 - 0.25 mm (0.0039 - 0.0098 in) 

Limit: 0.30 mm (0.0118 in) 

• Apply sealant to rear oil seal retainer as shown. Use Genuine Silicone RTV Sealant, or equivalent. Refer to "RECOMMENDED CHEMICAL PRODUCTS AND SEALANTS ".

Fig 9: Identifying Liquid Gasket Applying Area

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1. Using suitable snap ring pliers, install the snap ring fully into the pin-groove of the piston rear side.
   • Piston front mark (A)
   • Oil hole (B)
   • Connecting rod front mark (C)
   • Cylinder No. (D)
   Fig 10: Identifying Piston Front Mark, Oil Hole And Connecting Rod Front Mark

   Courtesy of NISSAN MOTOR CO., U.S.A.
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° to 158°F)]. From the front to the rear, insert the piston pin into the piston and through the connecting rod.
   Fig 11: Heating Pistons
   Courtesy of NISSAN MOTOR CO., U.S.A.
   • 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 are positioned as shown.
     • ←: Front
     • Piston grade number (A)
     • Pin grade number (F)
   Fig 12: Identifying Connecting Rod Front Mark, Oil Hole And Cylinder Number

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3. Install the snap ring into the front of the piston pin-groove.
   Fig 13: Identifying Snap Ring Plier

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   • After installing, check that the connecting rod pivots smoothly on the pin.
   CAUTION: Do not reuse snap rings, always replace with new ones.

Top ring (A): - 

Second ring (B): 2A 

• Position each ring with the gap as shown, referring to the piston front mark.

Fig 15: Identifying Piston Ring Gap Direction

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• 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 oil holes on the connecting rod and on the corresponding bearing are aligned.
  Fig 16: Aligning Connecting Rod Bearing Stopper Protrusion With Notch Of Connecting Rod

  Courtesy of NISSAN MOTOR CO., U.S.A.

• 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 (←) using a suitable tool.
  Fig 17: Identifying Piston With Piston Front Mark

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  • Oil hole (C)

• Match the stamped cylinder number marks on the connecting rod with those on the cylinder cap for installation.
  Fig 18: Identifying Connecting Rod Cap Marks

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• 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. 

• Measure the outer diameter of the connecting rod cap bolt as shown.
  Fig 19: Identifying Connecting Rod Cap Bolt Dimension

  Courtesy of NISSAN MOTOR CO., U.S.A.

  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) 

Fig 20: Connecting Rod Nuts

Courtesy of NISSAN MOTOR CO., U.S.A.

Stage 1: 19 - 21 N.m (1.9 - 2.1 kg-m, 14 - 15 ft-lb) 

Stage 2: 90° - 95° degrees clockwise 

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) 

• 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.

Fig 21: Identifying Knock Sensor And Bolt

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Fig 22: Identifying Pilot Converter With Chamfer Facing Crankshaft

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• ←: Crankshaft side

Fig 23: Identifying Reinforce Plate

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• Install the drive plate and reinforce plate in the direction as shown.
• Align dowel pins of crankshaft rear and drive plate with pin holes of each part.
• Secure the crankshaft using a ring gear stopper.
• Tighten the drive plate bolts in one or two steps.