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Home >> Toyota >> 2020 >> Avalon Limited >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 41 (Engine Mechanical (Service Information) [A25A-FXS] (1 Of 2)) >> Camshaft >> Removal [04/2018 - 08/2021] >> Procedure

Removal [04/2018 - 08/2021]: Procedure

WARNING: This page is about a different variant/trim than selected.
  1. REMOVE FUEL (ENGINE ROOM SIDE) PUMP ASSEMBLY (for High Pressure) 

    Refer to REMOVAL [04/2018 - 08/2021]

  2. DISCONNECT AIR CONDITIONING TUBE AND ACCESSORY ASSEMBLY 
    1. Disengage the 2 clamps and disconnect the air conditioning tube and accessory assembly.
      GTY918554Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  3. DISCONNECT ENGINE WIRE 
    1. Disconnect the 6 connectors.
      GTY904154Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Disengage the 3 clamps and disconnect the engine wire.
  4. REMOVE IGNITION COIL ASSEMBLY 

    Refer to PROCEDURE - Step 2

  5. REMOVE CAMSHAFT POSITION SENSOR (for Intake Side) 

    Refer to PROCEDURE - Step 2

  6. REMOVE CAMSHAFT POSITION SENSOR (for Exhaust Side) 

    Refer to PROCEDURE - Step 3

  7. REMOVE CAM TIMING OIL CONTROL SOLENOID ASSEMBLY 

    Refer to PROCEDURE - Step 2

  8. REMOVE O-RING 

    Refer to PROCEDURE - Step 3

  9. REMOVE CAMSHAFT TIMING OIL CONTROL VALVE ASSEMBLY (EXHAUST CAMSHAFT TIMING GEAR BOLT ASSEMBLY) 

    Refer to PROCEDURE - Step 2

  10. REMOVE CAM TIMING CONTROL MOTOR WITH EDU ASSEMBLY 

    Refer to PROCEDURE - Step 4

  11. REMOVE CAM TIMING CONTROL MOTOR O-RING 

    Refer to PROCEDURE - Step 5

  12. REMOVE CYLINDER HEAD COVER SUB-ASSEMBLY 

    Refer to PROCEDURE - Step 22 [04/2018 - 08/2019] , or refer to PROCEDURE - Step 22 [08/2019 - ]

  13. REMOVE SPARK PLUG TUBE GASKET 

    Refer to PROCEDURE - Step 23 [04/2018 - 08/2019] , or refer to PROCEDURE - Step 23 [08/2019 - ]

  14. REMOVE FUEL PUMP LIFTER GUIDE 

    Refer to PROCEDURE - Step 39 [04/2018 - 08/2019] , or refer to PROCEDURE - Step 39 [08/2019 - ]

  15. SET NO. 1 CYLINDER TO TDC (COMPRESSION) 
    1. Turn the crankshaft clockwise to align the timing mark (cutout) on the crankshaft pulley assembly with the "0" timing mark on the No. 2 timing chain cover assembly.
      GTY894679Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Paint Mark
      *b Timing Mark
      *c "0" Timing Mark
    2. Check that the timing marks are positioned as shown in the illustration.

      HINT: 

      If the timing marks are not positioned as shown in the illustration, turn the crankshaft clockwise and then align them again.

    3. Place paint marks on the chain sub-assembly at points aligned with the timing marks on the camshaft timing gear assembly and camshaft timing exhaust gear assembly.
  16. REMOVE STRAIGHT SCREW PLUG 

    Refer to PROCEDURE - Step 25 [04/2018 - 08/2019] , or refer to PROCEDURE - Step 25 [08/2019 - ]

  17. REMOVE CAMSHAFT 
    1. Rotate the crankshaft approximately 15° clockwise.
      GTY909361Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Approximately 15°
    2. Rotate the crankshaft approximately 15° counterclockwise.
      GTY940600Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Approximately 15°
    3. Align the pin hole of the No. 1 chain tensioner assembly with the pin hole of the chain tensioner slipper, and then insert the pin.
      GTY944524Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Pin
      *b Pin Hole (No. 1 Chain Tensioner Assembly Side)
      *c Pin Hole (Chain Tensioner Slipper Side)
    4. Using the hexagonal portion of the No. 2 camshaft, secure the No. 2 camshaft.
      NOTE:

      Do not damage the camshaft housing sub-assembly, cylinder head sub-assembly and spark plug tube.

      GTY925056Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Hold
    5. Remove the 2 bolts from the camshaft timing exhaust gear assembly.
    6. Using the hexagonal portion of the camshaft, secure the camshaft.
      GTY918936Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Hold
      Turn
      NOTE:
      • Do not damage the camshaft housing sub-assembly, cylinder head sub-assembly and spark plug tube.
      • Do not disassemble the camshaft timing gear assembly.
    7. Using a 10 mm bi-hexagon socket wrench, remove the bolt from the camshaft timing gear assembly.
    8. Using the hexagonal portion of the No. 2 camshaft, loosen and hold the chain sub-assembly while moving the No. 2 camshaft in the direction shown in the illustration.
      GTY854178Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Hold - -
      Turn - -
    9. Move the camshaft timing gear assembly together with the camshaft timing exhaust gear assembly and chain sub-assembly toward the No. 2 timing chain cover assembly as shown in the illustration.
      GTY869870Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *1 Camshaft Timing Gear Assembly *2 Camshaft Timing Exhaust Gear Assembly
      *3 Chain Sub-assembly - -
      Remove in this Direction - -
    10. Remove the camshaft timing exhaust gear assembly from the chain sub-assembly.
    11. Remove the camshaft timing gear assembly from the chain sub-assembly.
    12. Secure the chain sub-assembly to the vehicle using rope, etc.
      GTY904159Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      NOTE:

      Do not drop the chain sub-assembly into the timing chain cover assembly.

    13. Uniformly loosen and remove the 8 bolts in the order shown in the illustration.
      GTY879080Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    14. Uniformly loosen and remove the 14 bolts in the order shown in the illustration.
      NOTE:

      Uniformly loosen the bolts while holding the camshaft horizontally.

      GTY873505Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *1 No. 1 Camshaft Bearing Cap
      *2 No. 2 Camshaft Bearing Cap
      *3 No. 3 Camshaft Bearing Cap
      *4 No. 4 Camshaft Bearing Cap
    15. Remove the No. 1 camshaft bearing cap, No. 2 camshaft bearing cap, 2 No. 3 camshaft bearing caps and No. 4 camshaft bearing cap.

      HINT: 

      Arrange the removed parts so that they can be reinstalled in their original locations.

    16. Remove the camshaft from the camshaft housing sub-assembly.
      GTY904195Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    17. Remove the No. 2 camshaft from the camshaft housing sub-assembly.
      GTY904192Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
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