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Home >> Lexus >> 2003 >> GS 300 >> Repair and Diagnosis >> Engine Performance >> Adjustment >> Engine Mechanical (2JZ-GE) >> Cylinder Block >> Reassembly

Cylinder Block: Reassembly

HINT:

NOTE: Apply a generous amount of oil on the sliding surface of the bearing, and not on the back of it or on the surface to which it is installed.
  1. ASSEMBLE PISTON AND CONNECTING ROD 
    1. Using a small screwdriver, install a new snap ring on one side of the piston pin hole.

      HINT:

      Be sure that end gap of the snap ring is not aligned with the pin hole cutout portion of the piston.

    2. Gradually heat the piston to about 80°C (176°F).
      Fig 1: Installing New Snap Ring
      G02943724Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    3. Coat the piston pin with engine oil.
    4. Align the front marks of the piston and connecting rod, and push in the piston pin with your thumb.
    5. Install a new snap ring at the other end of the piston pin hole.

      HINT:

      Be sure that end gap of the snap ring is not aligned with the pin hole cutout portion of the piston.

      Fig 2: Aligning Front Marks Of The Piston And Connecting Rod
      G02943725Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  2. INSTALL PISTON RINGS 
    Fig 3: Identifying Piston Ring Code Marks
    G02943726Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Install the oil ring expander and 2 side rails by hand.
    2. Using a piston ring expander, install the 2 compression rings with the code mark facing up.

      Code mark: 

      PISTON RINGS CODE MARK REFERENCE

      No.1 1T
      No.2 2T
    3. Position the piston rings so that the ring ends are as shown.
      NOTE: Do not align the piston ring ends.
      Fig 4: Positioning Piston Rings On Piston
      G02943727Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  3. INSTALL BEARINGS 
    1. Align the bearing claw with the groove of the connecting rod and connecting cap.
    2. Install the bearings in the connecting rod and connecting rod cap.
      Fig 5: Installing Connecting Rod Bearings
      G02943728Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  4. INSTALL MAIN BEARINGS 

    HINT:

    • Main bearings come in widths of 20.0 mm (0.787 in.) and 23.0 mm (0.906 in.). Install the 23.0 mm bearings in the No. 1 cylinder block journal position with the main bearing cap. Install the 20.0 mm bearings in the other positions.
    • Upper bearings have an oil groove and oil holes; lower bearings do not.
      Fig 6: Identifying Differences In Main Bearings
      G02943729Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Align the bearing claw with the claw groove of the main bearing cap or cylinder block.
      NOTE: Install the bearing with the oil hole in the cylinder block.
      Fig 7: Installing Bearing With Oil Hole In Cylinder Block & Bearing Claw With Claw Groove
      G02943730Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Install the bearings in the cylinder block and main bearing caps.
      Fig 8: Installing Bearing In Block & Main Bearing Caps
      G02943731Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  5. INSTALL UPPER THRUST WASHERS 

    Install the 2 thrust washers under the No. 4 main journal position of the cylinder block with the oil grooves facing outward.

  6. PLACE CRANKSHAFT ON CYLINDER BLOCK 
    Fig 9: Installing Upper Thrust Washers
    G02943732Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  7. PLACE MAIN BEARING CAP AND LOWER THRUST WASHERS ON CYLINDER BLOCK 
    1. Install the lower thrust washers on the No. 4 main bearing with the grooves facing outward.
      Fig 10: Installing Lower Thrust Washer On No. 4 Main Bearing
      G02943733Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Install the main bearing caps in numerical order with the arrows facing forward.
  8. INSTALL MAIN BEARING CAP BOLTS 

    HINT:

    • The main bearing cap bolts are tightened in 2 progressive steps (steps (b) and (d)).
    • If any of the main bearing bolts break or deform, replace them.
      Fig 11: Identifying Main Bearing Cap
      G02943734Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Apply a light coat of engine oil on the threads and under the heads of the main bearing cap bolts.
    2. Install and uniformly tighten the 14 main bearing cap bolts, in several passes, in the sequence shown.
      Fig 12: Installing Sequence Of Main Bearing Cap Bolt
      G02943735Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Torque: 45 N.m (450 kgf.cm, 33 ft.lbf) 

      If any one of the main bearing cap bolts does not meet the torque specification, replace the main bearing cap bolt.

    3. Mark the front of the main bearing cap bolt head with paint.
      Fig 13: Identifying Painted Mark
      G02943736Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    4. Retighten the main bearing cap bolts 90° in the numerical order shown above.
    5. Check that the painted mark is now at a 90° angle to the front.
    6. Check that the crankshaft turns smoothly.
  9. CHECK CRANKSHAFT THRUST CLEARANCE 

    Using a dial indicator, measure the thrust clearance while prying the crankshaft back and forth with a screwdriver.

    Standard thrust clearance: 

    0.020 - 0.220 mm (0.0008 - 0.0087 in.) 

    Maximum thrust clearance: 

    0.30 mm (0.0118 in.) 

    If the thrust clearance is greater than maximum, replace the thrust washers as a set.

    Fig 14: Measuring Crankshaft Thrust Clearance While Prying Crankshaft Back And Forth
    G02943737Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    Thrust washer thickness: 

    1.940 - 1.990 mm (0.0764 - 0.0783 in.) 

  10. INSTALL PISTON AND CONNECTING ROD ASSEMBLIES 

    Using a piston ring compressor, push the correctly numbered piston and connecting rod assemblies into each cylinder with the front mark of the piston facing forward.

    Fig 15: Installing Piston And Connecting Rod Assemblies
    G02943738Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  11. PLACE CONNECTING ROD CAP ON CONNECTING ROD 
    1. Match the numbered connecting rod cap with the connecting rod.
    2. Install the connecting rod cap with by aligning the dowel pin to the corresponding hole.
      Fig 16: Installing Connecting Rod Cap By Aligning Dowel Pin To Corresponding Hole
      G02943739Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  12. INSTALL CONNECTING ROD CAP BOLTS 

    HINT:

    • The connecting rod cap bolts are tightened in 2 progressive steps (steps (b) and (d)).
    • If any of the connecting rod bolts break or deform, replace them.
    1. Apply a light coat of engine oil on the threads and under the heads of the connecting rod cap bolts.
    2. Install and alternately tighten the bolts of the connecting rod cap in several passes.

      Torque: 30 N.m (300 kgf.cm, 22 ft.lbf) 

      If any one of the connecting rod cap bolts does not meet the torque specification, replace the cap bolt.

      Fig 17: Installing Connecting Rod Cap Bolts
      G02943740Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    3. Mark the front of the connecting rod cap bolt with paint.
    4. Retighten the connecting rod cap bolts 90° in the numerical order shown.
    5. Check that the painted mark is now at a 90° angle to the front.
    6. Check that the crankshaft turns smoothly.
  13. CHECK CONNECTING ROD THRUST CLEARANCE (See  DISASSEMBLY   ) 
  14. INSTALL REAR OIL SEAL RETAINER 
    1. Remove any old packing (FIPG) material and be careful not to drop any oil on the contact surfaces of the retainer and cylinder block.
      Fig 18: Installing Painted Mark
      G02943741Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      • Using a razor blade and gasket scraper, remove all the old packing (FIPG) material from the gasket surfaces and sealing groove.
      • Thoroughly clean all components to remove all debris.
      • Using a non-residue solvent, clean both sealing surfaces.
    2. Apply seal packing to the retainer as shown.

      Seal packing: Part No.08826-00080 or equivalent 

      • Install a nozzle that has been cut to a 2 - 3 mm (0.08 - 0.12 in.) opening.
      • Parts must be assembled within 3 minutes of application. Otherwise the material must be removed and reapplied.
      • Immediately remove nozzle from the tube and reinstall cap.
        Fig 19: Apply Seal Packing To The Retainer
        G02943742Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    3. Install the retainer with the 6 bolts.

      Torque: 6.0 N.m (60 kgf.cm, 53 in.lbf) 

  15. INSTALL OIL PUMP (See  INSTALLATION  ) 
  16. INSTALL RH ENGINE MOUNTING BRACKET AND INSULATOR ASSEMBLY 

    Install the mounting bracket with the 4 bolts.

    Torque: 59 N.m (590 kgf.cm, 44 ft.lbf) 

  17. INSTALL LH ENGINE MOUNTING BRACKET AND INSULATOR ASSEMBLY 

    Install the mounting bracket with the 4 bolts.

    Torque: 59 N.m (590 kgf.cm, 44 ft.lbf) 

  18. INSTALL FUEL INLET PIPE 

    Install the fuel inlet pipe with the 2 bolts.

    Torque: 29 N.m (290 kgf.cm, 21 ft.lbf) 

  19. INSTALL NO. 1 OIL PIPE 

    Install the No. 1 oil pipe with 2 new gaskets and the union bolt.

    Torque: 55 N.m (550 kgf.cm, 41 ft.lbf) 

  20. INSTALL OIL FILTER AND BRACKET ASSEMBLY 
    1. Install a new O-ring to the oil filter bracket.
    2. Install a new gasket to the union bolt.
    3. Install the oil filter bracket with the union bolt.

      Torque: 90 N.m (900 kgf.cm, 65 ft.lbf) 

  21. INSTALL OIL PRESSURE SWITCH AND KNOCK SENSORS 

    For Oil Pressure Switch (See step 6 under INSPECTION ).

    For Knock Sensors (See REMOVAL & INSTALLATION (GS300 & IS300) ).

  22. INSTALL CYLINDER HEAD (See  INSTALLATION  ) 
  23. INSTALL WATER PUMP (See  INSTALLATION  ) 
  24. INSTALL NO. 2 WATER BYPASS PIPE WITH HOSE 
    1. Install the water bypass pipe with the bolt and 2 nuts.

      Torque: 21 N.m (210 kgf.cm, 15 ft.lbf) 

    2. Connect the water bypass hose to the hose clamp.
  25. INSTALL TIMING PULLEYS AND BELT (See  INSTALLATION  ) 
  26. INSTALL GENERATOR 

    Install the generator and pipe bracket with the bolt and nut.

    Torque: 40 N.m (400 kgf.cm, 30 ft.lbf) 

  27. REMOVE ENGINE STAND FROM ENGINE 
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