Toyota Land Cruiser, Sequoia 6 2001-06

Camshaft, Bearings & Lifters

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Removal & Installation



  1. Before servicing the vehicle, refer to the Precautions section.
  2.  
  3. Drain the cooling system.
  4.  
  5. Relieve the fuel system pressure.
  6.  
  7. Remove or disconnect the following:

    Negative battery cable
     
    Engine under covers
     
    Engine appearance cover
     
    Air intake hose
     
    Accessory drive belt
     
    Cooling fan
     
    Radiator
     
    Idler pulley
     
    Upper and middle timing belt covers
     
    A/C compressor
     
    Cooling fan bracket
     
    Alternator
     
    Accessory drive belt tensioner
     

  8.  
  9. Set the engine to Top Dead Center (TDC) with the camshaft sprocket timing marks aligned with the rear cover timing marks.
  10.  
  11. Rotate the crankshaft to 50 degrees After TDC as shown. The crankshaft pulley timing mark should align with the center of the No. 2 idler pulley bolt.
  12.  
  13. Remove or disconnect the following:

    Crankshaft pulley
     
    Lower timing cover
     
    Timing belt.
     
    Camshaft timing sprockets
     
    Camshaft Position (CMP) sensor
     
    Ignition coils
     
    Valve cover
     
    Timing belt rear covers
     

  14.  
  15. Rotate the right bank camshafts as necessary to access the exhaust camshaft sub-gear service bolt hole and install a 6mm x 1.0mm bolt.
  16.  


    Click image to see an enlarged view

    Fig. Setting the crankshaft to 50 degrees ATDC



    Click image to see an enlarged view

    Fig. Camshaft service bolt installation



    Click image to see an enlarged view

    Fig. Right bank camshaft timing mark (1 dot marks) alignment



NOTE
Keep all valvetrain components in order for assembly.

  1. Align the right bank camshaft 1 dot timing marks to a10
  2.  
  3. Loosen the bearing cap bolts in sequence and in several passes.
  4.  
  5. Remove the right bank camshafts.
  6.  
  7. Rotate the left bank camshafts as necessary to access the exhaust camshaft sub-gear service bolt hole and install a 6mm x 1.0mm bolt.
  8.  
  9. Align the left bank camshaft 2 dot timing marks as shown.
  10.  
  11. Loosen the bearing cap bolts in sequence and in several passes.
  12.  
  13. Remove the left bank camshafts.
  14.  
  15. Remove the valve lifters and shims.
  16.  


    Click image to see an enlarged view

    Fig. Right bank camshaft bearing cap loosening sequence



    Click image to see an enlarged view

    Fig. Left bank camshaft timing mark (2 dot marks) alignment



    Click image to see an enlarged view

    Fig. Left bank camshaft bearing cap loosening sequence


To install:



Click image to see an enlarged view

Fig. Apply a 1.5mm bead of sealant to the front bearing caps

  1. Ensure that the crankshaft is at 50 degrees After TDC.
  2.  
  3. Install or connect the following:

    Valve lifters and shims in their original positions
     
    Right bank camshafts with the 1 dot timing marks at 10 degrees
     
    Left bank camshafts with the 2 dot timing marks aligned
     
    Left and right bank camshaft bearing caps in their original positions. Apply sealant to the front bearing caps as shown.
     
    Camshaft oil seals
     

  4.  
  5. The bearing cap bolts vary in length and are identified as follows:

    A: 3.70 inches (94mm)
     
    B: 2.83 inches (72mm)
     
    C: 0.98 inches (25mm)
     
    D: 2.05 inches (52mm)
     
    E: 1.50 inches (38mm)
     

  6.  
  7. Bolts in positionsABC
  8.  
  9. Lubricate the threads and under the contact flange for bolts in positionsDE
  10.  
  11. Install oil feed pipes and the bearing cap bolts according to position in the illustrations.
  12.  
  13. Tighten the camshaft bearing bolts in sequence and in several passes to the following specifications:

    Bolt C: 66 inch lbs. (7.5 Nm)
     
    All others: 12 ft. lbs. (16 Nm)
     

  14.  
  15. Remove the service bolts from the exhaust camshaft gears.
  16.  
  17. Install or connect the following:

    Timing belt rear covers
     
    Valve cover
     
    Ignition coils
     
    CMP sensor
     
    Camshaft timing sprockets. Tighten the bolts to 80 ft. lbs. (108 Nm).
     
    Timing belt
     
    Lower timing cover
     
    Crankshaft pulley. Tighten the bolt to 181 ft. lbs. (245 Nm).
     
    Accessory drive belt tensioner
     
    Alternator
     
    Cooling fan bracket
     
    A/C compressor
     
    Upper and middle timing belt covers
     
    Idler pulley. Tighten the bolt to 27 ft. lbs. (37 Nm).
     
    Radiator
     
    Cooling fan
     
    Accessory drive belt
     
    Air intake hose
     
    Engine appearance cover
     
    Engine under covers
     
    Negative battery cable
     

  18.  
  19. Fill the cooling system.
  20.  
  21. Start the engine and check for leaks.
  22.  


    Click image to see an enlarged view

    Fig. Right bank bearing cap bolt location



    Click image to see an enlarged view

    Fig. Left camshaft bearing cap bolt locations



    Click image to see an enlarged view

    Fig. Right bank camshaft bearing cap bolt torque sequence



    Click image to see an enlarged view

    Fig. Left bank camshaft bearing cap bolt torque sequence


  1. Before servicing the vehicle, refer to the Precautions section.
  2.  
  3. Drain the cooling system.
  4.  
  5. Relieve the fuel system pressure.
  6.  
  7. Remove or disconnect the following:

    Negative battery cable
     
    Engine under covers
     
    Engine appearance cover
     
    Air intake hose
     
    Accessory drive belt
     
    Cooling fan
     
    Radiator
     
    Idler pulley
     
    Upper and middle timing belt covers
     
    A/C compressor
     
    Cooling fan bracket
     
    Alternator
     
    Accessory drive belt tensioner
     

  8.  
  9. Set the engine to Top Dead Center (TDC) with the camshaft sprocket timing marks aligned with the rear cover timing marks.
  10.  
  11. Rotate the crankshaft to 50 degrees After TDC as shown. The crankshaft pulley timing mark should align with the center of the No. 2 idler pulley bolt.

    Click image to see an enlarged view

    Fig. Setting the crankshaft to 50 degrees ATDC

  12.  
  13. Remove or disconnect the following:

    Crankshaft pulley
     
    Lower timing cover
     
    Timing belt.
     
    Camshaft timing sprockets
     
    Camshaft Position (CMP) sensor
     
    Ignition coils
     
    Valve cover
     
    Timing belt rear covers
     

  14.  
  15. Rotate the right bank camshafts as necessary to access the exhaust camshaft sub-gear service bolt hole and install a 6mm x 1.0mm bolt.
    NOTE
    Keep all valvetrain components in order for assembly.



    Click image to see an enlarged view

    Fig. Camshaft service bolt installation



    Click image to see an enlarged view

    Fig. Right bank camshaft timing mark (1 dot marks) alignment

  16.  
  17. Align the right bank camshaft 1 dot timing marks to a 10 degree angle as shown.
  18.  
  19. Loosen the bearing cap bolts in sequence and in several passes.
  20.  
  21. Remove the right bank camshafts.

    Click image to see an enlarged view

    Fig. Right bank camshaft bearing cap loosening sequence

  22.  
  23. Rotate the left bank camshafts as necessary to access the exhaust camshaft sub-gear service bolt hole and install a 6mm x 1.0mm bolt.
  24.  
  25. Align the left bank camshaft 2 dot timing marks as shown.

    Click image to see an enlarged view

    Fig. Left bank camshaft timing mark (2 dot marks) alignment



    Click image to see an enlarged view

    Fig. Left bank camshaft bearing cap loosening sequence

  26.  
  27. Loosen the bearing cap bolts in sequence and in several passes.
  28.  
  29. Remove the left bank camshafts.
  30.  
  31. Remove the valve lifters and shims.
  32.  

To install:

Click image to see an enlarged view

Fig. Apply a 1.5mm bead of sealant to the front bearing caps

  1. Ensure that the crankshaft is at 50 degrees After TDC.
  2.  
  3. Install or connect the following:

    Valve lifters and shims in their original positions
     
    Right bank camshafts with the 1 dot timing marks at 10 degrees
     
    Left bank camshafts with the 2 dot timing marks aligned
     
    Left and right bank camshaft bearing caps in their original positions. Apply sealant to the front bearing caps as shown.
     
    Camshaft oil seals
     

  4.  
  5. The bearing cap bolts vary in length and are identified as follows:

    A: 3.70 inches (94mm)
     
    B: 2.83 inches (72mm)
     
    C: 0.98 inches (25mm)
     
    D: 2.05 inches (52mm)
     
    E: 1.50 inches (38mm)
     

  6.  
  7. Bolts in positions A , B and C are installed dry.
  8.  
  9. Lubricate the threads and under the contact flange for bolts in positions D and E .
  10.  
  11. Install oil feed pipes and the bearing cap bolts according to position in the illustrations.

    Click image to see an enlarged view

    Fig. Right bank bearing cap bolt location



    Click image to see an enlarged view

    Fig. Left camshaft bearing cap bolt locations

  12.  
  13. Tighten the camshaft bearing bolts in sequence and in several passes to the following specifications:

    Bolt C: 66 inch lbs. (7.5 Nm)
     
    All others: 12 ft. lbs. (16 Nm)

    Click image to see an enlarged view

    Fig. Right bank camshaft bearing cap bolt torque sequence



    Click image to see an enlarged view

    Fig. Left bank camshaft bearing cap bolt torque sequence

     

  14.  
  15. Remove the service bolts from the exhaust camshaft gears.
  16.  
  17. Install or connect the following:

    Timing belt rear covers
     
    Valve cover
     
    Ignition coils
     
    CMP sensor
     
    Camshaft timing sprockets. Tighten the bolts to 80 ft. lbs. (108 Nm).
     
    Timing belt
     
    Lower timing cover
     
    Crankshaft pulley. Tighten the bolt to 181 ft. lbs. (245 Nm).
     
    Accessory drive belt tensioner
     
    Alternator
     
    Cooling fan bracket
     
    A/C compressor
     
    Upper and middle timing belt covers
     
    Idler pulley. Tighten the bolt to 27 ft. lbs. (37 Nm).
     
    Radiator
     
    Cooling fan
     
    Accessory drive belt
     
    Air intake hose
     
    Engine appearance cover
     
    Engine under covers
     
    Negative battery cable
     

  18.  
  19. Fill the cooling system.
  20.  
  21. Start the engine and check for leaks.
  22.  

 
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