DSD Information System
Home >> Toyota >> 2021 >> Highlander LE, 4WD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 22 (Engine Mechanical System (A25A-FXS) - Service Information (1 Of 3)) >> Camshaft >> Removal [11/2023 - ] >> Procedure

Removal [11/2023 - ]: 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 [11/2023 - ]

  2. DISCONNECT ENGINE WIRE 
    1. Disconnect the 6 connectors.
      GTY914147Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Disengage the 3 clamps and disconnect the engine wire.
  3. REMOVE IGNITION COIL ASSEMBLY 

    Refer to PROCEDURE - Step 2

  4. REMOVE CAMSHAFT POSITION SENSOR (for Intake Side) 

    Refer to PROCEDURE - Step 2

  5. REMOVE CAMSHAFT POSITION SENSOR (for Exhaust Side) 

    Refer to PROCEDURE - Step 3

  6. SEPARATE NO. 2 EARTH WIRE 

    Refer to PROCEDURE - Step 2

  7. REMOVE CAM TIMING OIL CONTROL SOLENOID ASSEMBLY 

    Refer to PROCEDURE - Step 3

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

    Refer to PROCEDURE - Step 2

  9. REMOVE CAM TIMING CONTROL MOTOR WITH EDU ASSEMBLY 

    Refer to PROCEDURE - Step 6

  10. REMOVE CAM TIMING CONTROL MOTOR O-RING 

    Refer to PROCEDURE - Step 7

  11. REMOVE CYLINDER HEAD COVER SUB-ASSEMBLY 

    Refer to PROCEDURE - Step 25

  12. REMOVE SPARK PLUG TUBE GASKET 

    Refer to PROCEDURE - Step 26

  13. REMOVE FUEL PUMP LIFTER GUIDE 

    Refer to PROCEDURE - Step 42

  14. 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.
  15. REMOVE STRAIGHT SCREW PLUG 

    Refer to PROCEDURE - Step 28

  16. 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. Type A:
      1. Using the hexagonal portion of the No. 2 camshaft, hold the No. 2 camshaft.
        GTY865178Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
        *a Hold
        NOTE:

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

      2. Using a 5 mm hexagon socket wrench, remove the 2 bolts from the camshaft timing exhaust gear assembly.
    5. Type B:
      1. 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.

        GTY1004068Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
        *a Hold
      2. Using a 5 mm hexagon socket wrench, remove the 2 bolts from the camshaft timing exhaust gear assembly.
    6. Using the hexagonal portion of the camshaft, hold the camshaft.
      GTY893966Courtesy 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 SST and a 10 mm bi-hexagon socket wrench, remove the bolt from the camshaft timing gear assembly.
      • SST: 09961-01270 
    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
Diesel-Data.com