Subaru Tribeca 2006

Timing Chain Cover, Chain, Sprockets, & Seal

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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 crankshaft pulley cover.
  6.  
  7. Remove the crankshaft pulley bolt.
  8.  
  9. Lock the crankshaft in place using tool ST499977100, or equivalent.
  10.  
  11. Remove the crankshaft pulley.
  12.  
  13. Remove the front timing chain cover.
    NOTE
    Bolts are three different sizes. Be careful to install the correct bolt in the correct hole.



    Click image to see an enlarged view

    Fig. Front cover bolt sizes and locations

  14.  
  15. Remove the right side chain tensioner.
    NOTE
    Be careful the plunger does not come out.

  16.  
  17. Remove the right chain guide, between the right side cams. Remove the right side chain guide. Remove the right side chain tensioner lever. Remove the right timing chain.
  18.  
  19. Remove the left side chain tensioner.
    NOTE
    Be careful the plunger does not come out.

  20.  
  21. Remove the left side chain tensioner lever. Remove the left chain guide, between the left side cams. Remove the chain guide.
  22.  
  23. Remove the center chain guide. Remove the upper idler sprocket. Remove the left timing chain.
  24.  
  25. Remove the lower idler sprocket.

    Click image to see an enlarged view

    Fig. The chain tensioner plunger A does not come out-right hand side



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    Fig. Location of the chain guide between the cams-right hand side



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    Fig. Location of the chain guide-right hand side



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    Fig. The chain tensioner plunger A does not come out-left hand side



    Click image to see an enlarged view

    Fig. Location of the chain guide between the cams-left hand side



    Click image to see an enlarged view

    Fig. Location of the chain guide-left hand side

  26.  

To install:

  1. Make sure all components are clean. Apply oil to the chain guide, tensioner lever and idler sprockets.
  2.  
  3. Place the screw, spring, pin and tension rod into the tensioner body.
  4.  
  5. While pressing the tensioner onto a rubber mat, twist it to the left and right to shorten the rod. Place a thin pin into the holes between the rod and body to hold it in place. Always perform this task on a rubber mat.
  6.  
  7. Using the crankshaft socket tool, align the TOP MARK on the crankshaft sprocket to the 9 O-clock position, as shown in the illustration.

    Click image to see an enlarged view

    Fig. Align the TOP MARK on the crankshaft sprocket to the 9 O-clock position



    Click image to see an enlarged view

    Fig. Align the TOP MARK on the camshaft sprocket to the 12 O-clock position



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    Fig. Make sure the mark A on the chain and the mark B camshaft sprocket are aligned the same way as the one on the crankshaft sprocket-right hand side

  8.  
  9. Align the key groove on the exhaust camshaft sprocket to the 12 O-clock position, as shown in the illustration.
  10.  
  11. Align the intake camshaft sprocket, as shown in the illustration.

    Click image to see an enlarged view

    Fig. Intake camshaft alignment



    Click image to see an enlarged view

    Fig. Make sure the mark A on the chain and the mark B camshaft sprocket are aligned the same way as the one on the crankshaft sprocket-left hand side

  12.  
  13. Turn the crankshaft sprocket clockwise; align the TOP MARK to the 12 O-clock position. Piston number one is now at Top Dead Center (TDC).
    CAUTION
    Do not rotate the camshaft or crankshaft sprockets until the chain is completely routed or damage will occur.

  14.  
  15. Install the lower idler sprocket and tighten the bolt to 51 ft. lbs. (69 Nm).
  16.  
  17. Install the left side timing chain, align the mark -B- on the crankshaft sprocket with the matching mark -A- on the timing chain.
  18.  
  19. Route the left side timing chain onto the lower idler sprocket, water pump, exhaust cam sprocket and the intake cam sprocket in that order.
  20.  
  21. Make sure the mark -A- on the chain and the mark -B- camshaft sprocket are aligned the same way as the one on the crankshaft sprocket or damage will occur.
  22.  
  23. Install the upper chain idler and tighten the bolt to 51 ft. lbs. (69 Nm).
  24.  
  25. Install the left side chain guide, between the camshafts. Tighten the bolt to 60 inch lbs. (6 Nm) using a NEW bolt.
  26.  
  27. Install the left side chain guide. Tighten the bolts to 12 ft. lbs. (16 Nm). Install the tensioner lever on the left side and tighten the bolt to 12 ft. lbs. (16 Nm). Install the chain tensioner on the left side and tighten the bolts to 12 ft. lbs. (16 Nm).
  28.  
  29. Install the right side timing chain. Align the marks of the left and right timing chains on the lower idler sprocket. Install the right side timing chain to the right side intake camshaft sprocket and the right side exhaust camshaft sprocket in this order.
  30.  
  31. Make sure the mark -A- on the chain and the mark -B- camshaft sprocket are aligned the same way as the one on the crankshaft sprocket or damage will occur.
  32.  
  33. Install the right side chain guide. Install the right side chain tensioner lever and tighten the bolts to 12 ft. lbs. (16 Nm). Install the right side chain guide and tighten the NEW bolt to 60 inch lbs. (6 Nm). Install the right side chain tensioner and tighten the bolts to 12 ft. lbs. (16 Nm).
  34.  
  35. Adjust the clearance between the chain guide on the right side and the center chain guide so that there is range between 0.331-0.339 inch (8.4-8.6mm).
  36.  
  37. Install the center chain guide and tighten the NEW bolt to 72 inch lbs. (8 Nm).
  38.  
  39. Check the match marks on each sprocket and corresponding timing chain are correct, remove the stopper from the tensioner.

    Click image to see an enlarged view

    Fig. Front timing cover bolt tightening sequence

  40.  
  41. Clean the mating surfaces on the front timing cover. Apply a bead of liquid gasket 0.020 inch in diameter to the mating surface of the front timing chain cover. Install the timing chain cover. Torque the retaining bolts to 60 inch lbs. and in the proper sequence.
  42.  
  43. Continue the installation in the reverse order of the removal procedure.
  44.  

 
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