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Home >> Lexus >> 2006 >> RX 330 FWD >> Repair and Diagnosis >> Engine Mechanical >> Timing Belt >> Engine Mechanical (3MZ-FE) >> Camshaft >> Removal

Engine Mechanical (3MZ-FE): Camshaft: Removal

  1. DRAIN COOLANT 
    1. Drain coolant (See COOLANT ).
  2. REMOVE FRONT WHEEL RH 
  3. REMOVE FR WIPER ARM RH 
    1. Remove the FR wiper arm RH (See FRONT WIPER MOTOR ).
  4. REMOVE FR WIPER ARM LH 
    1. Remove the FR wiper arm LH (See FRONT WIPER MOTOR ).
  5. REMOVE COWL TOP VENTILATOR LOUVER SUBASSEMBLY 
    1. Remove the cowl top ventilator louver sub-assembly (See FRONT WIPER MOTOR ).
  6. REMOVE WINDSHIELD WIPER LINK ASSEMBLY 
    1. Remove the windshield wiper link assembly (See FRONT WIPER MOTOR ).
  7. REMOVE COWL TOP PANEL SUB-ASSEMBLY OUTER 
    1. Remove the cowl top panel sub-assembly (See REMOVAL ).
  8. REMOVE V-BANK COVER SUB-ASSEMBLY 
    1. Remove the V-bank cover sub-assembly (See ADJUSTMENT  ).
  9. REMOVE AIR CLEANER CAP SUB-ASSEMBLY 
    1. Remove the air cleaner cap sub-assembly (See REMOVAL ).
  10. REMOVE EMISSION CONTROL VALVE SET 
    1. Remove the emission control valve set (See ADJUSTMENT  ).
  11. REMOVE INTAKE AIR SURGE TANK 
    1. Remove the intake air surge tank (See ADJUSTMENT  ).
  12. REMOVE RADIATOR HOSE INLET 
  13. REMOVE IGNITION COIL ASSEMBLY 
  14. REMOVE CYLINDER HEAD COVER SUB-ASSEMBLY 
    1. Remove the cylinder head cover sub-assembly (See ADJUSTMENT  ).
  15. REMOVE CYLINDER HEAD COVER SUB-ASSEMBLY LH 
    1. Remove the cylinder head cover sub-assembly LH (See ADJUSTMENT  ).
  16. REMOVE ENGINE UNDER COVER ASSEMBLY 
    1. w/ engine under cover assembly
  17. REMOVE ENGINE UNDER COVER NO. 1 
  18. REMOVE FRONT FENDER APRON SEAL RH 
    1. Remove the front fender apron seal RH (See REMOVAL ).
  19. REMOVE V-(COOLER COMPRESSOR TO CRANKSHAFT PULLEY) BELT NO. 1 
    1. Remove the V-(cooler compressor to crankshaft pulley) belt No. 1 (See REMOVAL  ).
  20. REMOVE VANE PUMP V-BELT 
    1. Remove the vane pump V-belt (See REMOVAL  ).
  21. REMOVE ENGINE MOVING CONTROL ROD 
    1. Remove the engine moving control rod (See REMOVAL  ).
  22. REMOVE ENGINE MOUNTING STAY NO. 2 RH 
    1. Remove the engine mounting stay No. 2 RH (See REMOVAL  ).
  23. REMOVE GENERATOR BRACKET NO. 2 
    1. Remove the generator bracket No. 2 (See REMOVAL  ).
  24. REMOVE CRANKSHAFT PULLEY 

    SST 09213-54015 (91651-60855), 09330-00021, 09950-50013 (09951-05010, 09952-05010, 09953-05020, 09954-05031) 

    1. Remove the crankshaft pulley (See REMOVAL  ).
  25. REMOVE TIMING BELT NO. 1 COVER 
  26. REMOVE TIMING BELT NO. 2 COVER 
    1. Remove the timing belt No. 2 cover (See REMOVAL  ).
  27. REMOVE ENGINE MOUNTING BRACKET RH 
    1. Remove the engine mounting bracket RH (See REMOVAL  ).
  28. REMOVE TIMING BELT GUIDE NO. 2 
  29. REMOVE TIMING BELT 
    1. Remove the timing belt (See REMOVAL  ).
  30. REMOVE TIMING BELT IDLER SUB-ASSEMBLY NO. 2 
  31. REMOVE CAMSHAFT TIMING PULLEY 
    1. Using SST, remove the bolt and the RH timing pulley.

      SST 09960-10010 (09962-01000, 09963-01000), 09249-63010 

      Fig 1: Removing RH Timing Pulley
      G04087604Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Using SST, remove the bolt and the LH timing pulley.

    SST 09960-10010 (09962-01000, 09963-01000) 

    HINT:

    Arrange the camshaft timing pulleys (RH and LH sides) so that they can be returned to the original locations when re-assembling.

  32. REMOVE TIMING BELT NO. 3 COVER 
    1. Disconnect the 3 engine wire harness clamps from the timing belt No. 3 cover.
    2. Remove the 6 bolts and the timing belt cover.
    Fig 2: Removing LH Timing Pulley
    G04087605Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  33. REMOVE CAMSHAFT 
    NOTE: Since the thrust clearance of the camshaft is small, the camshaft must be kept level while it is being removed. If the camshaft is not kept level, damage to the cylinder head or to the camshaft may result. To avoid this, the following steps should be carried out.
    Fig 3: Removing Timing Belt Cover
    G04087606Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Align the timing marks (2-dot marks) of the camshaft drive and the driven gears by turning the camshaft with a wrench.
      Fig 4: Aligning Timing Marks (2-Dot Marks) Of Camshaft Drive And Driven Gears
      G04087607Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Secure the exhaust camshaft sub-gear to the main gear with a service bolt.

      Torque: 5.4 N*m (55 kgf*cm, 48 in.*lbf) Recommended service bolt 

      RECOMMENDED SERVICE BOLT SPECIFICATION

      Thread diameter 6 mm
      Thread pitch 1.0 mm
      Bolt length 16 to 20 mm

      HINT:

      When removing the camshaft, make certain that the torsional spring force of the sub-gear has been eliminated by installation of the service bolt.

      Fig 5: Securing Exhaust Camshaft Sub-Gear To Main Gear With Service Bolt
      G04087608Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    3. Using several steps, loosen and remove the 10 bearing cap bolts uniformly in the sequence shown in the illustration. Remove the 5 bearing caps and the camshaft.
    NOTE:
    • Do not pry out the camshaft.
    • Be careful not to damage the portion of the cylinder head receiving the shaft thrust.
    Fig 6: Identifying Bearing Cap Bolts Loosening Sequence
    G04087609Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  34. REMOVE NO. 2 CAMSHAFT 
    1. Using several steps, loosen and remove the 10 bearing cap bolts uniformly in the sequence shown in the illustration. Remove the 5 bearing caps and the No. 2 camshaft.
      NOTE:
      • Do not pry out the camshaft.
      • Be careful not to damage the portion of the cylinder head receiving the shaft thrust.
    2. Remove the oil seal from the No. 2 camshaft.
    Fig 7: Identifying Bearing Cap Bolts Loosening Sequence
    G04087610Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  35. REMOVE NO. 3 CAMSHAFT SUB-ASSEMBLY 
    NOTE: Since the thrust clearance of the camshaft is small, the camshaft must be kept level while it is being removed. If the camshaft is not kept level, damage to the cylinder head or to the camshaft may result. To avoid this, the following steps should be carried out.
    1. Align the timing marks (1 dot mark) of the camshaft drive and the driven gears by turning the camshaft with a wrench.
      Fig 8: Aligning Timing Marks (1 Dot Mark) Of Camshaft Drive And Driven Gears By Turning Camshaft With Wrench
      G04087611Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Secure the exhaust camshaft sub-gear to the main gear with a service bolt.

      Torque: 5.4 N*m (55 kgf*cm, 48 in.*lbf) 

      Recommended service bolt 

      RECOMMENDED SERVICE BOLT SPECIFICATION

      Thread diameter 6 mm
      Thread pitch 1.0 mm
      Bolt length 16 to 20 mm

      HINT:

      When removing the camshaft, make certain that the torsional spring force of the sub-gear has been eliminated by installation of the service bolt.

      Fig 9: Securing Exhaust Camshaft Sub-Gear To Main Gear With Service Bolt
      G04087612Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    3. Using several steps, loosen and remove the 10 bearing cap bolts uniformly in the sequence shown in the illustration. Remove the 5 bearing caps and the No. 3 camshaft.
    NOTE:
    • Do not pry out the camshaft.
    • Be careful not damage the portion of the cylinder head receiving the shaft thrust.
    Fig 10: Identifying Bearing Cap Bolts Loosening Sequence
    G04087613Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  36. REMOVE NO. 4 CAMSHAFT SUB-ASSEMBLY 
    1. Using several steps, loosen and remove the 10 bearing cap bolts uniformly in the sequence shown in the illustration. Remove the 5 bearing caps and the No. 4camshaft.
      NOTE:
      • Do not pry out the camshaft.
      • Be careful not damage the portion of the cylinder head receiving the shaft thrust.
    2. Remove the oil seal from the No. 4 camshaft.
    Fig 11: Identifying Bearing Cap Bolts Loosening Sequence
    G04087614Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  37. REMOVE CAMSHAFT TIMING GEAR ASSEMBLY 
    NOTE: Do not remove or install the camshaft timing gear (VVT-i) unless you are replacing the VVT-i or the camshaft.
    1. Clamp the camshaft in a vise on the hexagonal lobe.
      NOTE: Be careful not to damage the camshaft.
      Fig 12: Clamping Camshaft In Vise On Hexagonal Lobe
      G04087615Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Using a 46 mm socket wrench, remove the lock nut by turning it clockwise.
      NOTE:
      • Remove it with the lock-pin engaged and locked at the most retard angle position.
      • The lock nut has LH threads.
      • Never use any tool other than the socket wrench. Other tools will deform the cam angle rotor.
    3. Remove the camshaft VVT-i.
    NOTE: Never remove the 3 bolts on the gear.
    NOTE: If it is difficult to remove the VVT-i, tap it lightly using a plastic-faced hammer and then remove it.
    Fig 13: Removing Lock Nut
    G04087616Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  38. REMOVE CAMSHAFT SUB GEAR 
    1. Clamp the camshaft in a vise on the hexagonal lobe.
      NOTE: Be careful not to damage the camshaft.
      Fig 14: Clamping Camshaft In Vise On Hexagonal Lobe
      G04087617Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Using SST, turn the sub-gear counterclockwise, and remove the service bolt.

      SST 09960-10010 (09962-01000, 09963-00500) 

      Fig 15: Removing Service Bolt
      G04087618Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    3. Using snap ring pliers, remove the snap ring.
    4. Remove the wave washer, camshaft sub-gear and camshaft gear bolt washer.
Fig 16: Removing/Installing Snap Ring
G04087939Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
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