Catera 2000-2001

Camshaft, Bearings & Lifters

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Removal & Installation



  1. Before servicing the vehicle, refer to the Precautions Section.
  2.  
  3. Remove or disconnect the following:

    Negative battery cable
     
    Intake plenum
     
    Intake air resonator
     
    Camshaft cover
     
    Front timing belt cover
     
    Timing belt
     

  4.  
  5. Rotate the crankshaft 60 degrees counterclockwise Before Top Dead Center (BTDC) to prevent valve/piston contact.

    Click image to see an enlarged view

    Fig. Camshaft gear holding tools must be installed before attempting to remove the gears from the camshafts

  6.  
  7. Use a Camshaft Locking tool to hold the camshaft gears in place and loosen the camshaft gear bolt.
  8.  
  9. Remove the locking tool from the gears.
  10.  
  11. Remove the camshaft gear(s).
    NOTE
    Be certain that the camshaft is not under load from the lifters.

  12.  
  13. Gradually loosen the camshaft bearing cap bolts sequentially, starting in the center and working outward in a spiral. Note the identification marks on the caps.

    Click image to see an enlarged view

    Fig. The camshaft bearing caps have identification marks stamped on the side



    Click image to see an enlarged view

    Fig. Camshaft bearing cap locations-right cylinder head

  14.  
  15. Remove the camshaft from the cylinder head.
  16.  

To install:

  1. Lubricate the camshaft lobes, lifters and bearing journals with camshaft lubricant.
  2.  
  3. Install the camshaft to the cylinder head.
  4.  
  5. To reduce the lifter load, position the pin on the front of the camshaft as follows:

    1 o-clock position: right exhaust camshaft
     
    11 o-clock position: right intake camshaft
     
    12 o-clock position: left exhaust camshaft
     
    7 o-clock position: left intake camshaft

    Click image to see an enlarged view

    Fig. Camshaft bearing cap locations-left cylinder head

     

  6.  
  7. Place a small amount of Loctite® on the edge of the front bearing cap to ensure a good seal between the cap and surface of the cylinder head. Do not allow the sealer to get into the oil journal of the cap.
    WARNING
    The bearing caps must be installed in their original positions.

  8.  
  9. Install or connect the following:
    NOTE
    Make certain that the camshaft seal is fully seated.


    WARNING
    A new camshaft gear bolt must be installed. The required tightening method will stretch the bolt making the original bolt unusable.



    Camshaft bearing caps. Torque the bolts in sequence starting in the center and working outwards to 71 inch lbs. (8 Nm).
     
    New camshaft seal lubricated with engine oil
     



    Camshaft gear. Tighten the new bolt to 37 ft. lbs. (50 Nm), plus a 60 degree turn, plus a 15 degree turn.
     



    Timing belt and adjust as needed
     
    Front timing belt cover. Torque the bolts to 71 inch lbs. (8 Nm).
     
    Camshaft cover. Torque the bolts to 71 inch lbs. (8 Nm).
     
    Intake plenum. Torque the bolts to 71 inch lbs. (8 Nm).
     
    Intake air resonator
     
    Negative battery cable
     

  10.  
  11. Start the vehicle and verify the engine is running properly.
  12.  

 
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