Disassembly And Assembly: Disassembly

WARNING: This page is about a different car, the 2004 Nissan Titan. However, it is still accessible from the selected car via links, so may be relevant.

NOTE: Explained here is how to disassemble with engine stand supporting transmission surface. When using different type of engine stand, note with difference in steps and etc.

Remove engine assembly. Refer to ENGINE ASSEMBLY .
Remove the parts that may restrict installation of engine to engine stand.
NOTE: The procedure is described assuming that you use a engine holding the surface, to which transmission is installed.
- Remove transmission. See REMOVAL & INSTALLATION in REMOVAL & INSTALLATION - TITAN article in TRANSMISSION.
- Remove front final drive assembly (4x4 only). See FRONT FINAL DRIVE in DIFFERENTIALS & DRIVE AXLES - FRONT - TITAN article in DRIVELINE/AXLES.
- Remove drive plate.
  - Holding crankshaft pulley mounting bolts, lock crankshaft to remove drive plate bolts.
  - Loosen bolts diagonally.
    CAUTION:
    Be careful not to damage drive plate. Especially avoid deforming and damaging of signal plate teeth (circumference position).
    
    Place the drive plate with signal plate surface facing other than downward.
    
    Keep magnetic materials away from signal plate.
Fig 1: Identifying Signal Plate
Courtesy of NISSAN MOTOR CO., U.S.A.
Lift the engine with hoist to install it onto engine stand.
CAUTION: Use an engine stand that has a load capacity [approximately 240 kg (529 lb) or more] large enough for supporting the engine weight.
- If the load capacity of the stand is not adequate, remove the following parts beforehand to reduce the potential risk of overturning the stand.
  - Remove fuel tube and fuel injector assembly. Refer to FUEL INJECTOR AND FUEL TUBE .
  - Remove intake manifold. Refer to INTAKE MANIFOLD .
  - Remove exhaust manifold. Refer to EXHAUST MANIFOLD AND THREE WAY CATALYST .
  - Remove A/C compressor fitting bolts and brackets (with power tool). See REMOVAL AND INSTALLATION FOR COMPRESSOR in MANUAL HVAC SYSTEM - TITAN article.
  - Remove ignition coil. Refer to IGNITION COIL .
  - Remove rocker cover. Refer to ROCKER COVER .
  - Other removable brackets.
CAUTION: Before removing the hanging chains, make sure the engine stand is stable and there is no risk of overturning.
Drain engine oil.
Drain engine coolant by removing cylinder block drain plug "A", "B", "C" and "D" as shown in the figure.

Fig 2: Removing Cylinder Block Drain Plugs
Courtesy of NISSAN MOTOR CO., U.S.A.
Remove the following components and associated parts (The parts listed in step 3 are not included here.)
- Oil pan and oil strainer. Refer to OIL PAN AND OIL STRAINER .
- Crankshaft pulley, front cover and timing chain. Refer to TIMING CHAIN .
- Camshaft. Refer to CAMSHAFT .
- Cylinder head. Refer to CYLINDER HEAD .
Remove knock sensor.
CAUTION: Carefully handle the sensor, avoiding shocks.
Remove the piston and connecting rod assembly as follows.
- Before removing the piston and connecting rod assembly, check the connecting rod side clearance. Refer to CONNECTING ROD SIDE CLEARANCE .
- Position the crankshaft pin corresponding to the connecting rod to be removed onto the bottom dead center.
- Remove the connecting rod cap.
- Using a suitable tool, push the piston and connecting rod assembly out to the cylinder head side.
Remove the connecting rod bearings.
CAUTION: When removing them, note the installation position. Keep them in the correct order.

Fig 3: Pushing The Piston And Connecting Rod Assembly Out
Courtesy of NISSAN MOTOR CO., U.S.A.
Using a suitable tool, remove the piston rings from the piston.
CAUTION:
- When removing the piston rings, be careful not to damage the piston.
- Be careful not to damage piston rings by expanding them excessively.
- Before removing the piston rings, check the piston ring side clearance. Refer to PISTON RING SIDE CLEARANCE .
Fig 4: Removing Piston Rings
Courtesy of NISSAN MOTOR CO., U.S.A.
Remove the piston from the connecting rod as follows.
- Using a suitable tool, remove the snap ring.
  
  Fig 5: Removing The Snap Ring
  Courtesy of NISSAN MOTOR CO., U.S.A.
- Heat piston to 60° to 70°C (140° to 158°F) with industrial use drier or equivalent.
  
  Fig 6: Heating Piston
  Courtesy of NISSAN MOTOR CO., U.S.A.
- Using a suitable tool, push out piston pin.
  
  Fig 7: Removing Piston Pin
  Courtesy of NISSAN MOTOR CO., U.S.A.
Remove the rear oil seal retainer from the cylinder block.
- Using a suitable tool between the rear end of the crankshaft counterweight and rear oil seal retainer, separate the liquid gasket to remove.
  CAUTION: Be careful not to damage the mating surface.
Using a suitable tool, remove the rear oil seal from the rear oil seal retainer.
Remove the main bearing cap as follows:
- Before loosening the main bearing cap bolts, measure the crankshaft side clearance. Refer to CRANKSHAFT END PLAY .
- Loosen bolts in several different steps.
- Loosen the side bolts (M10) starting from 30 to 21 to remove.
- Loosen the main bearing cap sub bolts (M9) starting from 20 to 11 to remove.
- Loosen the main bearing cap bolts (M12) starting from 10 to 1 to remove.
- Remove the main bearing cap.
  - Insert bolts (2) into bolt holes, and then remove main bearing cap by lifting up and shaking forward and backward.
Fig 8: Loosening The Main Bearing Cap Bolts
Courtesy of NISSAN MOTOR CO., U.S.A.

Fig 9: Removing The Main Bearing Cap
Courtesy of NISSAN MOTOR CO., U.S.A.
Remove the crankshaft.
Remove the main bearings and thrust bearings from the cylinder block and main bearing caps.
- When removing them, note the installation position. Keep them in the correct order.
Using tool, remove the pilot converter if necessary.
1. Tool number : ST16610001 (J-23907)
- Removal and installation without the engine stand is possible.
Fig 10: Removing The Pilot Converter
Courtesy of NISSAN MOTOR CO., U.S.A.