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Home >> Toyota >> 2001 >> Sienna CE >> Repair and Diagnosis >> External Pages >> Different car >> Section 13 (Engine Controls - On-Vehicle Adjustments - V6 & V8) >> Engine Mechanical >> V6 Valve Clearance >> Avalon, Camry, Camry Solara, Highlander & Sienna

Avalon, Camry, Camry Solara, Highlander & Sienna

WARNING: This page does not describe the selected car, but rather 10 other vehicles, including the 2002 Toyota Tundra, 2002 Toyota Tacoma, 2002 Toyota Sienna, 2002 Toyota Sequoia, and 2002 Toyota Land Cruiser. However, it is still accessible from the selected car via links, so may be relevant.
  1. On Sienna, remove caps, windshield wiper arm nuts and windshield wiper arms. Remove top seal. See Fig 1. Remove cowl top panel cap.
  2. Remove clips and disconnect windshield washer hoses. Remove driver's side and passenger's side ventilation louvers. See Fig 1. Remove bolts from cowl top panel. Disconnect electrical connector for windshield wiper motor. Remove cowl top panel.
    Fig 1: Locating Cowl Top Panel & Components (Sienna)
    G00016701Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  3. On all models, remove passenger's side front fender apron for access to crankshaft pulley. Drain cooling system. On Camry, Camry Solara and Highlander, remove suspension upper brace (if equipped). Suspension upper brace fits between strut towers and is bolted to top of each strut tower. On all models, remove intake manifold cover. See Fig 2-Fig 5 .
  4. Air intake chamber must be removed for removal of valve covers. On Avalon, remove air intake hose located between throttle body and air cleaner assembly. On Camry Solara, note spark plug wire routing and disconnect spark plug wires at spark plugs. On Camry, Camry Solara, Highlander and Sienna, remove air cleaner cap assembly and air filter.
  5. On all models, disconnect necessary electrical connections, control cables, coolant hoses, ground cables and vacuum hoses for removal of air intake chamber. See Fig 2-Fig 5 . Remove data link connector from end of air intake chamber (if equipped).
    Fig 2: Exploded View Of Air Intake Chamber & Components (Avalon & Sienna)
    G00025386Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    Fig 3: Exploded View Of Air Intake Chamber & Components (Camry)
    G00025457Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    Fig 4: Exploded View Of Air Intake Chamber & Components (Camry Solara)
    G00025458Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    Fig 5: Exploded View Of Air Intake Chamber & Components (Highlander)
    G00016702Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  6. Remove nuts and disconnect power steering pressure tube (if equipped) from No. 1 engine hanger. Remove bolts, No. 1 engine hanger and throttle body brace or air intake chamber support brace. See Fig 2-Fig 5 . Remove nuts, EGR pipe and gaskets (if equipped).
  7. Remove bolts/nuts, air intake chamber and gasket. Disconnect electrical connector at ignition coils. Mark ignition coil location for installation reference. Remove retaining bolts and ignition coils. Disconnect upper radiator hose from coolant outlet at front of engine, between cylinder heads.
  8. Disconnect electrical connectors for removal of wiring assemblies located above valve covers. Remove bolts and wiring assemblies. Remove bolts, valve covers and gaskets.
  9. Rotate crankshaft pulley clockwise (viewed from front of engine) so crankshaft pulley timing mark (groove) aligns with "0" mark on timing belt cover and cylinder No. 1 is at TDC on compression stroke. Cylinder No. 1 is front cylinder on right side of engine when viewed from flywheel end of engine. See Fig 6-Fig 8 .
    Fig 6: Identifying Valve & Cylinder Arrangement (Avalon, Highlander & Sienna)
    G99D50404Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    Fig 7: Identifying Valve & Cylinder Arrangement (Camry)
    G00025453Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    Fig 8: Identifying Valve & Cylinder Arrangement (Camry Solara)
    G94I46316Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  10. Ensure cylinder No. 1 intake and exhaust valve lifters are loose. If valve lifters are not as described, rotate crankshaft clockwise one full revolution (360 degrees) and realign crankshaft pulley timing mark (groove) with "0" mark on timing belt cover.
  11. Using feeler gauge, measure valve clearance between valve lifter and camshaft on intake valves on cylinders No. 1 and 6, and exhaust valves on cylinders No. 2 and 3. Perform STEP 1 in illustration. See Fig 6-Fig 8 . Record valve clearance.
  12. Rotate crankshaft pulley clockwise an additional 240 degrees (2/3 revolution). Measure valve clearance of intake valves on cylinders No. 2 and 3, and exhaust valves on cylinders No. 4 and 5. Perform STEP 2 in illustration. See Fig 6-Fig 8 . Record valve clearance.
  13. Rotate crankshaft pulley clockwise an additional 240 degrees (2/3 revolution). Measure valve clearance of intake valves on cylinders No. 4 and 5, and exhaust valves on cylinders No. 1 and 6. Perform STEP 3 in illustration. See Fig 6-Fig 8 . Record valve clearance.
  14. Ensure valve clearance is within specification. See VALVE CLEARANCE SPECIFICATIONS (AVALON, CAMRY, CAMRY SOLARA, HIGHLANDER & SIENNA)  table.
    VALVE CLEARANCE SPECIFICATIONS (AVALON, CAMRY, CAMRY SOLARA, HIGHLANDER & SIENNA)

    Application (1) In. (mm)
    Intake .006-.010 (.15-.25)
    Exhaust .010-.014 (.25-.35)
    (1) Adjust valve clearance with engine cold. Verify valve clearance listed with valve clearance listed on underhood label (if available). If valve clearance on underhood label differs from valve clearance listed, use specification on underhood label.
  15. If valve clearance adjustment is required, rotate crankshaft pulley so camshaft lobe on valve to be adjusted is facing upward, away from valve lifter. Rotate valve lifter so notch area on valve lifter is at 90-degree angle to camshaft. This will place notch area perpendicular to camshaft.
  16. Valve Clearance Adjuster (SST 09248-55040) is used to remove adjusting shim. Using SST "A" of valve clearance adjuster, press valve lifter downward. See Fig 9.
  17. Install SST "B" between camshaft and valve lifter with side marked with "7" or "9" in the proper location, depending on cylinder application. See Fig 9. Side marked with "7" should be used on front valves on cylinders No. 1 and 2 only. Side marked with "9" should be used on all except front valves on cylinders No. 1 and 2. It may be necessary to install SST "B" at a slight angle from intake side of engine to prevent it from getting stuck on adjusting shim. Remove SST "A".
    Fig 9: Removing & Installing Valve Clearance Adjusting Shim (Avalon, Camry, Camry Solara, Highlander & Sienna)
    G99H08033Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  18. Using small screwdriver and magnet, remove adjusting shim. Using micrometer, measure and record thickness of removed adjusting shim. On Avalon, Camry Solara and Sienna, go to next step. On Camry and Highlander, go to step  20.
  19. On Avalon, Camry Solara and Sienna, using measured clearance and adjusting shim thickness, determine correct thickness of adjusting shim to be used for proper valve by using the follow equation, or using adjusting shim selection charts. For intake valves, "N" (new adjusting shim thickness) = "T" (used adjusting shim thickness) + "A" (measured clearance) minus .008" (.20 mm). For exhaust valves, "N" (new adjusting shim thickness) = "T" (used adjusting shim thickness) + "A" (measured clearance) minus .012" (.30 mm). Adjusting shims are available in 17 sizes ranging from .0984" (2.500 mm) to .1299" (3.300 mm) in increments of .0020" (.050 mm). For adjusting shim selection charts, see Fig 13 and Fig 14 . Once correct adjusting shim is determined, go to step  21.
  20. On Camry and Highlander, using measured clearance and adjusting shim thickness, determine correct thickness of adjusting shim to be using by using following equation for proper valve application. For intake valves, "A" (new adjusting shim thickness) = "B" (used adjusting shim thickness) + "C" (measured clearance) minus .008" (.20 mm). For exhaust valves, "A" (new adjusting shim thickness) = "B" (used adjusting shim thickness) + "C" (measured clearance) minus .012" (.30 mm). Adjusting shims are available in 17 sizes ranging from .0984" (2.500 mm) to .1299" (3.300 mm) in increments of .0020" (.050 mm). Once correct adjusting shim is determined, go to next step.
  21. On all models, install replacement adjusting shim with imprinted numbers on adjusting shim facing downward, toward valve lifter. Using SST "A", press downward on valve lifter and remove SST "B". Recheck valve clearance.
  22. Before installing valve covers and gaskets, apply sealant at specified areas on cylinder head. See Fig 10-Fig 12 . Install gasket and valve cover. Install and tighten valve cover bolts to specification. See TORQUE SPECIFICATIONS . To install remaining components, reverse removal procedure using NEW gaskets. Tighten bolts/nuts to specification. See TORQUE SPECIFICATIONS . Fill cooling system.
    Fig 10: Identifying Cylinder Head Sealant Application Areas (Avalon, Highlander & Sienna)
    G99E50405Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    Fig 11: Identifying Cylinder Head Sealant Application Areas (Camry)
    G00025449Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    Fig 12: Identifying Cylinder Head Sealant Application Areas (Camry Solara)
    G94I46324Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    Fig 13: Intake Valve Adjusting Shim Selection Chart (Avalon, Camry Solara & Sienna)
    G96G09517Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    Fig 14: Exhaust Valve Adjusting Shim Selection Chart (Avalon, Camry Solara & Sienna)
    G96I09518Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
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