Disassembly and Assembly: Assembly

WARNING: This page is about a different car, the 2011 Infiniti FX50. However, it is still accessible from the selected car via links, so may be relevant.

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.

Install each plug to cylinder block as shown in the illustration.

Fig 1: Identifying Washers And Water Drain Plugs

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

Tighten each plug as specified below.

PLUGS TIGHTENING TORQUE CHART

Part	Tightening torque
Plug (2)	78.0 N.m (8.0 kg-m, 58 ft-lb)
Water drain plug (3)	19.6 N.m (2.0 kg-m, 14 ft-lb)
Plug (4)	65.0 N.m (6.6 kg-m, 48 ft-lb)

Replace washers (1), (5) with new ones.
Apply sealant to the thread of water drain plug (3).
Use Genuine RTV Silicone Sealant or an equivalent. Refer to "RECOMMENDED CHEMICAL PRODUCTS AND SEALANTS ".
Apply sealant to the thread of plug (4).
Use Genuine High Strength Thread Locking Sealant or an equivalent. Refer to "RECOMMENDED CHEMICAL PRODUCTS AND SEALANTS ".

Install oil jet.
- Insert oil jet into cylinder block hole, and tighten the mounting bolt on the corner side (A) first.
  
  Fig 2: Identifying Oil Jet Mounting Bolt
  Courtesy of NISSAN MOTOR CO., U.S.A.
Install pilot converter to crankshaft, if removed.
- With drift [outer diameter: approx. 35 mm (1.38 in)], press-fit as far as it will go.
  
  Fig 3: Installing Pilot Converter To Crankshaft
  Courtesy of NISSAN MOTOR CO., U.S.A.
- Press-fit pilot converter with its chamfering side facing crankshaft as shown in the illustration.
  
  Fig 4: Identifying Pilot Converter Chamfering Side
  Courtesy of NISSAN MOTOR CO., U.S.A.
Install main bearings and thrust bearings as per the following:
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 (2) to both sides of the No. 3 journal housing on cylinder block (1).
  
  Fig 5: Identifying Thrust Bearings To Both Sides Of No. 3 Journal Housing On Cylinder Block
  Courtesy of NISSAN MOTOR CO., U.S.A.
  - Install thrust bearings with the oil groove (A) facing crankshaft arm (outside).
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.
  - 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.
  - Ensure the oil holes on cylinder block and those on the corresponding bearing are aligned.
Install crankshaft to cylinder block.
- While turning crankshaft by hand, check that it turns smoothly.
Install main bearing caps as per the following:
- Align the identification number to the journal position to install.
  
  Fig 6: Aligning Identification Number To Journal Position
  Courtesy of NISSAN MOTOR CO., U.S.A.
- Install it with the front mark (indicated by stamping) facing the front of engine.
- Using plastic hammer or similar tool, tap them lightly to seat them on the installation position.
  NOTE: Main bearing cap cannot be replaced as a single parts, because it is machined together with cylinder block.
Install each main bearing cap bolts as per the following:
CAUTION: If main bearing cap bolts and sub bolts are re-used, check their outer diameters before installation. Refer to "INSPECTION ".
1. Apply new engine oil to threads and seat surfaces of main bearing cap bolts and sub bolts.
2. Tighten all bolts in order of (No. 1 - 30) temporarily.
  
  Fig 7: Identifying Main Bearing Cap Bolts Tightening Sequence
  Courtesy of NISSAN MOTOR CO., U.S.A.
3. Tighten main bearing cap bolts (M12) in order of No. 1 - 10.
  Torque Specification: 53.9 N.m (5.5 kg-m, 40 ft-lb)
4. Tighten main bearing cap sub bolts (M9) in order of No. 11 - 20.
  Torque Specification: 19.6 N.m (2.0 kg-m, 14 ft-lb)
5. Tighten main bearing cap bolts (M12) in order of No. 1 - 10 (clockwise).
  Angle tightening: 90 degrees
  
  CAUTION: Use the angle wrench [SST: KV10112100 (BT8653-A)] (A) to check tightening angle. Never make judgment by visual inspection.
6. Tighten main bearing cap sub bolts (M9) in order of No. 11 - 20. (clockwise)
  Angle tightening: 90 degrees
  
  Fig 8: Checking Main Bearing Cap Bolts Tightening Angle Using Angle Wrench
  Courtesy of NISSAN MOTOR CO., U.S.A.
7. Tighten side bolts (M10) in order of No. 21 - 30.
  Torque Specification: 49.0 N.m (5.0 kg-m, 36 ft-lb)
  - After installing bolts, check that crankshaft can be rotated smoothly by hand.
  - Check the crankshaft end play. Refer to "CYLINDER BLOCK ".
Install rear oil seal retainer.
- Apply a continuous bead of liquid gasket with tube presser (commercial service tool) to rear oil seal retainer as shown in the illustration.
  
  Fig 9: Applying Continuous Bead Of Liquid Gasket With Tube Presser (Commercial Service Tool) To Rear Oil Seal Retainer
  Courtesy of NISSAN MOTOR CO., U.S.A.
  
  Use Genuine RTV Silicone Sealant or an equivalent. Refer to "RECOMMENDED CHEMICAL PRODUCTS AND SEALANTS ".
Install rear oil seal on rear oil seal retainer.

Fig 10: Identifying Oil Seal Lip And Dust Seal Lip
Courtesy of NISSAN MOTOR CO., U.S.A.
- Apply new engine oil to both oil seal lip (A) and dust seal lip (B).
- Install it so that each seal lip is oriented as shown in the illustration.
  CAUTION: Be careful not to scratch or make burrs on circumference of oil seal.
- Press in rear oil seal (1) to the position as shown in the illustration.
  
  Fig 11: Pressing In Rear Oil Seal To Position
  Courtesy of NISSAN MOTOR CO., U.S.A.
- Using a suitable drift [outer diameter: 101 mm (3.98 in)].
- Check the garter spring is in position and seal lips are not inverted.
Install piston to connecting rod as per the following:
- Assemble so that the front mark (A) on the piston head and the cylinder number (D) on connecting rod are positioned as shown in the illustration.
  
  Fig 12: Identifying Front Mark On Piston Head And Cylinder Number On Connecting Rod
  Courtesy of NISSAN MOTOR CO., U.S.A.
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.
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.
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 13: Installing Piston Rings On Piston Using Piston Ring Expander
  Courtesy of NISSAN MOTOR CO., U.S.A.
- If there is stamped mark on ring, mount it with marked side up.
  Stamped mark:
  
  Top ring (A) : 1 N
  
  Second ring (B) : 2 N
  
  Fig 14: Identifying Stamped Mark On Ring
  Courtesy of NISSAN MOTOR CO., U.S.A.
- Position each ring with the gap as shown in the illustration referring to the piston front mark (D).
  
  Fig 15: Identifying Rings End Positions
  Courtesy of NISSAN MOTOR CO., U.S.A.
- Check the piston ring side clearance. Refer to "INSPECTION ".
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 (A) of connecting rods and connecting rod bearing caps to install.
- Ensure the oil hole (C) on connecting rod and that on the corresponding bearing are aligned.
  
  Fig 16: Identifying Connecting Rod Bearing Stopper Protrusion, Cutout Of Connecting Rods And Oil Hole On Connecting Rod
  Courtesy of NISSAN MOTOR CO., U.S.A.
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.
  CAUTION: Be careful not to damage the cylinder wall and crankshaft pin, resulting from an interference of the connecting rod big end.
  
  Fig 17: Installing Piston Using Piston Ring Compressor
  Courtesy of NISSAN MOTOR CO., U.S.A.
Install connecting rod bearing cap.
- Match the stamped cylinder number marks on connecting rod with those on connecting rod bearing cap to install.
  
  Fig 18: Matching Stamped Cylinder Number Marks On Connecting Rod With Those On Connecting Rod Bearing Cap To Install
  Courtesy of NISSAN MOTOR CO., U.S.A.
- Be sure that front mark (H) on connecting rod bearing cap is facing the front of the engine.
Tighten connecting rod bolts as per the following:
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 Specification: 28.4 N.m (2.9 kg-m, 21 ft-lb)
4. Completely loosen connecting rod bolts.
  Torque Specification: 0 N.m (0 kg-m, 0 ft-lb)
5. Tighten connecting rod bolts.
  Torque Specification: 24.5 N.m (2.5 kg-m, 18 ft-lb)
6. Tighten connecting rod bolts. (clockwise)
  Angle tightening: 90 degrees
  
  CAUTION: Always use the angle wrench [SST: KV10112100 (BT8653-A)]. Never make judgment by visual inspection.
  - After tightening connecting rod bolts, check that crankshaft rotates smoothly.
  - Check the connecting rod side clearance. Refer to "INSPECTION ".
Install knock sensors.
- Install knock sensors in the direction shown in the illustration.
  
  Fig 19: Identifying Knock Sensors
  Courtesy of NISSAN MOTOR CO., U.S.A.
- After installing knock sensor, connect harness connector, and lay it out to front 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.
Install oil filter (for VVEL ladder assembly).
Install drive plate.
- Install drive plate (4) and reinforcement plate (3) as shown in the illustration.
  
  Fig 20: Identifying Drive Plate And Reinforcement Plate
  Courtesy of NISSAN MOTOR CO., U.S.A.
- When installing drive plate to crankshaft (1), 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.
- Holding ring gear with the ring gear stopper [SST: KV10119200 (J-49277)].
- Tighten the mounting bolts crosswise over several times.
Assemble in the reverse order of disassembly.