Question about Toyota Highlander

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What is the procedure to change valve cover gaskets and the torque sequence on a 2002 toyota highlander 3.0 VVTI 24 valve......thanks

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Hi, this is the procedure to changing the valve cover gasket on your 2002 Toyota Highlander....

  • Allow the car engine to cool. This can be accomplished by parking the car, lifting the hood and letting the car sit idle for a few hours.
  • Disconnect the battery cable. Locate and disconnect ventilation hose number one. Locate and disconnect ventilation hose number two. Disconnect and remove the engine cover sub assembly Number 1.
  • Locate and disconnect the engine coil plug. Locate and disconnect the engine wire assembly. Using a wrench, disconnect the valve cover bolts. Lifting straight up, remove the valve cover. Remove the valve cover gasket. This may require that a screwdriver is used to gently nudge the gasket.
  • Clean the gasket seating area with automotive engine cleaner, a scrub brush and a clean cloth or rag. Make sure that you remove all particles left by the old gasket and any oil that was left in the gasket seating area.
  • Place the new gasket into the gasket seating area. Reverse the steps used to remove the parts and put everything back into place.
  • Add oil to the engine and start the engine. Allow the car to run idle for 10 to 15 minutes. This will allow the oil to move to the top of the engine, lubricating the engine as it does.

Posted on Nov 14, 2010

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3.0L Engine

  1. Drain the engine coolant.
  2. Remove the right front fender apron seal.
  3. Remove the v-bank cover.
  4. Disconnect the inlet radiator hose.
  5. Remove the front upper center suspension brace sub-assembly.
  6. Remove the air cleaner assembly with the hose.
  7. Remove the intake air surge tank, as follows:
    1. Disconnect the accelerator cable.
    2. Remove the bolt, and disconnect the speed control cable with the bracket.
    3. Disconnect the Throttle Position (TP) sensor connector.
    4. Disconnect the Idle Air Control (IAC) valve connector.
    5. Remove the 3 bolts, and disconnect the PS pressure tube From the intake air surge tank, throttle body bracket and No.1 engine hanger.
    6. Disconnect the 2 water bypass hoses and No.6 air hose.

FIG : Disconnect the 2 water bypass hoses and No.6 air hose

what is the procedure to - jyackle5_1.jpg
G. Disconnect the purge hose.

FIG : Disconnect the purge hose

jyackle5_2.jpg H. Disconnect the hoses and cables.

FIG : Disconnect the hoses and cables

jyackle5_3.jpg I. Remove the 2 bolts and No.1 engine hanger. J. Remove the 2 bolts and throttle body bracket. FIG : Location of the No. 1 engine hanger and throttle body bracket
jyackle5_4.jpg K. Disconnect the engine wire from emission control valve set.
L. Using an 8 mm socket hexagon wrench, remove the 2 bolts, 2 nuts and intake air surge tank.
FIG : Intake aiwhat is the procedure to - jyackle5_5.jpgounting

jyackle5_5.jpg
  1. Remove the ignition coil. For more details, refer to the Engine Electrical Section.
    1. Remove the right and/or left cylinder head cover sub-assemblies, as follows:
    1. Using a E6 Torx® wrench, remove the 2 bolts, and disconnect the engine wire protector, if necessary.
    2. Remove the 9 bolts and cylinder head cover.

    1. Thoroughly clean the gasket mating surfaces.
    2. FIG : Left side cylinder head cover removal jyackle5_6.jpg

    Posted on Nov 14, 2010

    • Jyackle5
      Jyackle5 Nov 14, 2010

      To install:



      WARNING

      You must install the cylinder head cover within 3 minutes after applying the seal packing. Also, wait at least 2 hours after installing the cover to fill the engine with oil.




      1. Install the right side cylinder head (valve) cover as follows:


        1. Apply seal packing (part no. 08826-00080, or equivalent) to the cylinder head as shown in the accompanying illustration.

        2. Install the cylinder head cover within 3 minutes of applying the seal packing, then install the 9 bolts. Tighten the bolts uniformly, in a few passes for a final torque of 71 inch lbs. (8 Nm).

      FIG : Seal packing application locations-right side shown





    • 2. Install the left side cylinder head (valve) cover as follows:



      1. Apply seal packing (part no. 08826-00080, or equivalent) to the cylinder head as shown in the accompanying illustration.

      2. Install the cylinder head cover within 3 minutes of applying the seal packing, then install the 9 bolts. Tighten the bolts uniformly, in a few passes for a final torque of 71 inch lbs. (8 Nm).


      3. Install ignition coil and tighten the retaining bolts to 71 inch lbs. (8 Nm).


    • 4. Install intake air surge tank, as follows:




      1. Using an 8 mm hexagon wrench, install a new gasket and the air intake chamber assembly with the 2 bolts and 2 nuts. Uniformly tighten the bolts and nuts in several passes to a final torque of 32 ft. lbs. (43 Nm).

      2. Install the no.1 engine hanger with the 2 bolts and tighten to 19 ft. lbs. (26 Nm).

      3. Install the throttle body bracket with the 2 bolts and tighten to 14 ft. lbs. (20 Nm).


      5. Install the air cleaner assembly with hose.



      6. Connect all vacuum hoses and connectors disconnected during removal.



      7. Install the front suspension upper center brace sub-assembly and tighten the retainers to 59 ft. lbs. (80 Nm).



      8. Install the V-bank cover.



      9. Fill the engine with proper type and amount of engine coolant.



      10. After waiting a minimum of 2 hours, start the engine and inspect for engine coolant leaks.



      Good luck

      WARNING
      You must install the cylinder head cover within 3 minutes after applying the seal packing. Also, wait at least 2 hours after installing the cover to fill the engine with oil.

      1. Install the right side cylinder head (valve) cover as follows:
        1. Apply seal packing (part no. 08826-00080, or equivalent) to the cylinder head as shown in the accompanying illustration.
        2. Install the cylinder head cover within 3 minutes of applying the seal packing, then install the 9 bolts. Tighten the bolts uniformly, in a few passes for a final torque of 71 inch lbs. (8 Nm).
      FIG : Seal packing application locations-right side shown

    • 2. Install the left side cylinder head (valve) cover as follows:
      1. Apply seal packing (part no. 08826-00080, or equivalent) to the cylinder head as shown in the accompanying illustration.
      2. Install the cylinder head cover within 3 minutes of applying the seal packing, then install the 9 bolts. Tighten the bolts uniformly, in a few passes for a final torque of 71 inch lbs. (8 Nm).

      3. Install ignition coil and tighten the retaining bolts to 71 inch lbs. (8 Nm).
    • 4. Install intake air surge tank, as follows:
      1. Using an 8 mm hexagon wrench, install a new gasket and the air intake chamber assembly with the 2 bolts and 2 nuts. Uniformly tighten the bolts and nuts in several passes to a final torque of 32 ft. lbs. (43 Nm).
      2. Install the no.1 engine hanger with the 2 bolts and tighten to 19 ft. lbs. (26 Nm).
      3. Install the throttle body bracket with the 2 bolts and tighten to 14 ft. lbs. (20 Nm).

      5. Install the air cleaner assembly with hose.
      6. Connect all vacuum hoses and connectors disconnected during removal.


      7. Install the front suspension upper center brace sub-assembly and tighten the retainers to 59 ft. lbs. (80 Nm).


      8. Install the V-bank cover.


      9. Fill the engine with proper type and amount of engine coolant.


      10. After waiting a minimum of 2 hours, start the engine and inspect for engine coolant leaks.

      Good luck

  • Jyackle5
    Jyackle5 Nov 14, 2010

    You can also get teh info from autozone.com. just sign in and under repair info you can get the way to replace

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