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Removal [02/2017 - 08/2020]: Procedure

  1. REMOVE CHAIN SUB-ASSEMBLY 

    Refer to REMOVAL [02/2017 - 08/2020]

  2. INSPECT CAMSHAFT TIMING GEAR ASSEMBLY 
    1. Inspect the lock of the camshaft timing gear assembly.
    2. After cleaning the VVT oil hole in the intake side of the No. 1 camshaft bearing cap, completely seal the oil hole with adhesive tape or equivalent as shown in the illustration to prevent air from leaking.
      GTY766726Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Prick a Hole
      *b Adhesive Tape Sealing Area
      *c Adhesive Tape
      NOTE:

      Be sure to cover the oil hole completely because air leaks due to insufficient sealing will prevent the lock pin from being released.

    3. Prick a hole in the tape covering the oil hole as shown in the illustration. (Procedure A)
    4. Apply approximately 150 kPa (1.5 kgf/cm2 , 22 psi) of air pressure to the hole pricked in procedure A to release the lock pin.
      GTY426627Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      NOTE:
      • If air leaks out, reattach the adhesive tape.
      • Cover the oil hole with a piece of cloth when applying air pressure to prevent oil from spraying.
    5. Forcibly turn the camshaft timing gear assembly in the advance direction (counterclockwise).

      HINT: 

      Depending on the air pressure applied, the camshaft timing gear assembly may turn in the advance direction without assistance.

    6. Turn the camshaft timing gear assembly within its movable range (26.5 to 28.5°) 2 or 3 times without turning it to the most retarded position. Make sure that the camshaft timing gear assembly turns smoothly.
      GTY426618Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    7. Remove the adhesive tape from the No. 1 camshaft bearing cap.
  3. INSPECT CAMSHAFT TIMING EXHAUST GEAR ASSEMBLY 
    1. Check the lock of the camshaft timing exhaust gear assembly.
    2. After cleaning the VVT oil hole in the exhaust side of the No. 1 camshaft bearing cap, completely seal the oil hole with adhesive tape or equivalent as shown in the illustration to prevent air from leaking.
      GTY765192Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Prick a Hole
      *b Adhesive Tape Sealing Area
      *c Adhesive Tape
      NOTE:

      Be sure to cover the oil hole completely because air leaks due to insufficient sealing will prevent the lock pin from being released.

    3. Prick a hole in the tape covering the oil hole as shown in the illustration. (Procedure A)
    4. Apply approximately 200 kPa (2.0 kgf/cm2 , 29 psi) of air pressure to the hole pricked in procedure A to release the lock pin.
      GTY426625Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      NOTE:
      • If air leaks out, reattach the adhesive tape.
      • Cover the oil hole with a piece of cloth when applying air pressure to prevent oil from spraying.
    5. Using a screwdriver with its tip wrapped with protective tape, forcibly turn the camshaft timing exhaust gear assembly in the retard direction (clockwise).
      NOTE:
      • Be sure to keep the camshaft timing exhaust gear assembly in the retard direction using a screwdriver. If the gear is released, it will return to the most advanced position automatically due to the force from the spring.
      • Do not damage the camshaft timing exhaust gear assembly.
    6. Using a screwdriver with its tip wrapped with protective tape, turn the camshaft timing exhaust gear assembly within its movable range (19 to 21°) 2 or 3 times without turning it to the most advanced position. Make sure that the camshaft timing exhaust gear assembly turns smoothly.
      GTY451008Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    7. Remove the adhesive tape from the No. 1 camshaft bearing cap.
  4. REMOVE CAMSHAFT TIMING GEAR ASSEMBLY 
    1. Remove the bolt while holding the hexagonal portion of the camshaft, and then remove the camshaft timing gear assembly.
      GTY453718Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Bolt
      *b Do not remove
      NOTE:
      • Before removing the camshaft timing gear assembly, make sure that the lock pin has been released.
      • Be sure not to remove the other 4 bolts.
      • Keep the camshaft timing gear assembly horizontal while removing it from the camshaft.
  5. REMOVE CAMSHAFT TIMING EXHAUST GEAR ASSEMBLY 
    1. Remove the bolt while holding the hexagonal portion of the No. 2 camshaft, and then remove the camshaft timing exhaust gear assembly.
      GTY429082Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Bolt
      *b Do not remove
      NOTE:
      • Be sure not to remove the other 4 bolts.
      • Keep the camshaft timing exhaust gear assembly horizontal while removing it from the No. 2 camshaft.
  6. REMOVE VALVE ROCKER ARM LOST MOTION DAMPER SUB-ASSEMBLY 
    1. Remove the 8 bolts and 4 valve rocker arm lost motion damper sub-assemblies.
      GTY456104Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Shim
      NOTE:
      • Make sure the camshaft housing sub-assembly is installed to the cylinder head sub-assembly when removing or installing a valve rocker arm lost motion damper sub-assembly.
      • If a valve rocker arm lost motion damper sub-assembly is removed, do not remove the camshaft housing sub-assembly.
      • Do not remove the shims. If a shim is removed, replace the camshaft housing sub-assembly as engine malfunctions may result from irregular valve timing.
  7. INSTALL VALVE ROCKER ARM LOST MOTION DAMPER SUB-ASSEMBLY 
    1. Install the 4 valve rocker arm lost motion damper sub-assemblies with the 8 bolts. Uniformly tighten the bolts.
      GTY437851Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Hole for Engine Oil

      Torque: 10 N*m (102 kgf*cm, 7 ft.*lbf) 

    2. Add engine oil into the hole for engine oil.
  8. REMOVE CAMSHAFT HOUSING SUB-ASSEMBLY 
    NOTE:
    • The camshaft housing sub-assembly is replaced with an assembled unit that includes the camshaft housing, camshafts, camshaft bearing caps, valve rocker shaft, continuously variable valve lift controller assembly and valve rocker arm lost motion damper sub-assembly. If disassembled, replace the camshaft housing sub-assembly.
    • The camshafts cannot be replaced by themselves.
      GTY769895Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *1 Camshaft Housing Sub-assembly *2 Continuously Variable Valve Lift Controller Assembly
      *a Set of parts that are replaced together - -
    1. Uniformly loosen and remove the 17 bearing cap bolts in the order shown in the illustration.
      Fig 1: Camshaft Housing Sub-Assembly Loosening Sequence
      GTY454485Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      NOTE:

      Uniformly loosen the bearing cap bolts while keeping the camshaft housing level.

    2. Using a screwdriver, remove the camshaft housing sub-assembly by prying between the cylinder head sub-assembly and camshaft housing sub-assembly.
      GTY768715Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Protective Tape
      NOTE:

      Be careful not to damage the contact surfaces of the cylinder head sub-assembly and camshaft housing sub-assembly.

      HINT: 

      Tape the screwdriver tip before use.

  9. REMOVE NO. 1 VALVE ROCKER ARM SUB-ASSEMBLY 

    Refer to PROCEDURE - Step 40 [02/2017 - 10/2017] , or refer to PROCEDURE - Step 40 [10/2017 - ]

  10. REMOVE VALVE LASH ADJUSTER ASSEMBLY 

    Refer to PROCEDURE - Step 41 [02/2017 - 10/2017] , or refer to PROCEDURE - Step 41 [10/2017 - ]

  11. INSPECT NO. 1 VALVE ROCKER ARM SUB-ASSEMBLY 

    Refer to PROCEDURE - Step 1

  12. INSPECT VALVE LASH ADJUSTER ASSEMBLY 

    Refer to PROCEDURE - Step 2

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