Avalon 1995-1996

Timing Belt & Sprockets

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Removal & Installation



  1. Before servicing the vehicle, refer to the Precautions Section.
  2.  
  3. Disconnect the negative battery cable.
  4.  
  5. Remove the timing belt covers. Refer to Timing Belt Front Cover Removal & Installation.
  6.  
  7. Remove the right engine mounting bracket by removing the nut and 2 bolts.

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    Fig. Remove the right engine mounting bracket bolts and nut . . .



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    Fig. . . . then lift the right engine bracket from the engine

  8.  
  9. Remove the crankshaft timing belt guide.

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    Fig. Slide the timing belt guide off the crankshaft pulley



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    Fig. Place matchmarks on the pulley and cover

  10.  
  11. Set the No. 1 cylinder to TDC/Compression:
    1. Temporarily install the crankshaft pulley bolt.
    2.  
    3. Turn the crankshaft and align the crankshaft timing pulley timing marks with the oil pump body. Always turn the engine clockwise.

      Click image to see an enlarged view

      Fig. Turn the crankshaft clockwise to align the crankshaft timing pulley grove with the oil pump mark

    4.  
    5. Ensure the timing mark of the camshaft timing pulleys and rear timing belt cover are aligned. If not, turn the crankshaft an additional 360°.

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      Fig. Align the timing marks to set No. 1 cylinder to TDC



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      Fig. If the timing marks are not aligned, turn the crankshaft one full revolution (360 degrees)

    6.  
    7. Remove the crankshaft pulley bolt.
      NOTE
      If the belt is to be reused, align the installation marks on the belt to the marks on the pulleys. If the marks have worn off, make new ones.



      Click image to see an enlarged view

      Fig. Make sure the timing belt marks are aligned with the camshaft pulley and No. 3 timing belt cover

    8.  

  12.  
  13. Alternately loosen the 2 timing belt tensioner bolts. Remove the tensioner and dust boot.

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    Fig. Unbolt the timing belt tensioner . . .



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    Fig. . . . and only carry it in the upright position

  14.  
  15. Remove the timing belt.

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    Fig. Place a directional arrow on the belt if reusing it



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    Fig. Slip the belt off the lower and upper pulleys and extract it from the engine

  16.  
  17. Using a wrench, remove the right side camshaft timing pulley. In the same way, remove the left side camshaft timing pulley.
    NOTE
    Make sure the left and right side camshaft pulleys are arranged on the table correctly. It is recommended to mark them with an L and R.



    Click image to see an enlarged view

    Fig. Remove the camshaft pulley bolt and pulleys



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    Fig. Label the camshaft pulleys with an L and R to identify them

  18.  
  19. Remove the bolt retaining the No. 2 idler pulley, and slide off the pulley.
  20.  
  21. Using a 10mm hexagon wrench, remove the bolt and No. 1 idler pulley with plate washer.

    Click image to see an enlarged view

    Fig. Remove the No. 1 idler pulley and bolt



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    Fig. Remove the bolt retaining the No. 1 idler pulley, and slide the pulley off

  22.  
  23. Remove the crankshaft bolt and timing belt plate. Using a gear puller, separate the crankshaft pulley from the engine.
    NOTE
    Do not scratch the sensor portion of the crankshaft timing pulley.



    Click image to see an enlarged view

    Fig. Remove the crankshaft timing belt plate . . .



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    Fig. . . . then remove the crankshaft pulley gear

  24.  
  25. Inspect the seal for leakage and replace if necessary.

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    Fig. Look for seal leakage and replace if noticeable

  26.  

To install:

  1. When installing the crankshaft timing pulley, align the pulley set key with the key groove of the pulley, then slide on the pulley. Install the crankshaft timing pulley, with the sensor side facing inward. Install the timing belt plate and tighten the bolt to 69 inch lbs. (8 Nm).

    Click image to see an enlarged view

    Fig. Install the crankshaft timing pulley with the sensor facing inward

  2.  
  3. Install the No. 1 idler pulley using a 10mm hexagon wrench. Install the plate washer and idler pulley with the pivot bolt. Tighten the pivot bolt to 25 ft. lbs. (34 Nm). Check that the pulley moves freely.
  4.  
  5. Install the No. 2 idler pulley and tighten the bolt to 32 ft. lbs. (43 Nm). Check that the pulley moves smoothly.

    Click image to see an enlarged view

    Fig. Install the No. 2 idler pulley with the bolt and washer

  6.  
  7. Install the right side camshaft timing pulley:
    1. Face the flange side of the pulley outward.
    2.  
    3. Align the knock pin on the camshaft with the knock pin groove of the timing pulley, then slide on the right hand camshaft pulley.
    4.  
    5. Install the pulley bolt and tighten to 65 ft. lbs. (88 Nm). Use a torque wrench with a fulcrum length of 13.39 inch (340mm).
    6.  

  8.  
  9. Install the left side camshaft timing pulley:
    1. Face the flange side of the pulley inward.
    2.  
    3. Align the knock pin on the camshaft with the knock pin groove of the timing pulley, then slide on the left side camshaft pulley.
    4.  
    5. Install the pulley bolt and tighten to 94 ft. lbs. (125 Nm).
    6.  

  10.  
  11. Set the No. 1 cylinder to TDC/Compression:
    1. Temporarily install the crankshaft pulley bolt to the crankshaft. Turn the crankshaft, and align the timing marks of the crankshaft timing pulley and oil pump body.
    2.  
    3. Using a wrench, turn the camshaft pulley, align the timing marks of the timing pulley and the No. 3 timing belt cover.
    4.  

  12.  
  13. Install the timing belt:
    1. Remove any dirt or oil from the pulleys and keep them clean. Only wipe the pulleys.
    2.  
    3. Face the front mark of the timing belt forward.
    4.  
    5. Align the installation mark on the belt with the timing mark of the crankshaft timing pulley.
    6.  
    7. Align the installation marks on the timing belt with the timing marks on the camshaft timing pulleys.
    8.  
    9. Install the timing belt in the following order:

      Crankshaft pulley
       
      Water pump pulley
       
      Left camshaft pulley
       
      No. 2 idler pulley
       
      Right camshaft pulley
       
      No. 1 idler pulley

      Click image to see an enlarged view

      Fig. Install the timing belt components in this order

       

    10.  

  14.  
  15. Set the timing belt tensioner:
    1. Using a press, slowly press in the push rod using 200-2,205 ft. lbs. (981-9,807 N) of pressure.
    2.  
    3. Align the holes of the push rod and housing, pass a 1.27 mm hexagon wrench through the holes to keep the setting position of the push rod.

      Click image to see an enlarged view

      Fig. Insert an Allen head wrench through the hole of the tensioner

    4.  
    5. Release the press.
    6.  
    7. Install the dust boot to the tensioner.

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      Fig. Install the boot to the tensioner

    8.  

  16.  
  17. Temporarily install the tensioner with the 2 bolts. Alternately tighten the bolts to 20 ft. lbs. (27 Nm). Remove the 1.27 mm hexagon wrench from the tensioner.
  18.  
  19. Check the valve timing:
    1. Turn the crankshaft clockwise and align the timing marks of the crankshaft timing pulley and oil pump body.
    2.  
    3. Check that the timing marks of the right-hand and left-hand timing pulleys with the timing marks of the No. 3 timing belt cover as shown in the illustration. If the marks do not align, remove the timing belt and reinstall it.
    4.  
    5. Remove the crankshaft pulley bolt.
    6.  

  20.  
  21. Install the right engine mounting bracket and tighten the bolts to 21 ft. lbs. (28 Nm).
  22.  
  23. Install the No. 2 timing belt cover with the 5 bolts. Tighten the bolts to 74 inch lbs. (9 Nm).
  24.  
  25. Install the engine wire protector clamp to the No. 3 timing belt cover.
  26.  
  27. Install the engine wire protector to the No. 3 timing belt cover with the bolt.
  28.  
  29. Install the timing belt guide, facing the cup side outward.
  30.  
  31. Install the No. 1 timing belt cover by installing the 4 bolts. Tighten the bolts to 74 inch lbs. (9 Nm).
  32.  
  33. Install the crankshaft pulley. Tighten the bolt to 159 ft. lbs. (215 Nm).
  34.  
  35. Install the No. 2 alternator bracket. Tighten the nut to 21 ft. lbs. (28 Nm). Do not tighten the pivot bolt at this time.
  36.  
  37. Install the No. 2 right engine mounting bracket and the moving control rod.
  38.  
  39. Install the right engine mounting stay.
  40.  
  41. Connect the ground strap connector.
  42.  
  43. Install the coolant reservoir hose to the water outlet.
  44.  
  45. Install and adjust the drive belts.
  46.  
  47. Install the right front splash shield and wheel assembly.
  48.  
  49. Connect the negative battery cable.
  50.  
  51. Start the vehicle and check for any leaks.
  52.  
  53. Recheck the ignition timing.
  54.  

 
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