Altima 2007-2009

Camshaft & Lifters 2

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Removal & Installation



2.5L Engine

Specific to:

Nissan Altima 2007-2008


CAUTION
Be sure to work in a well ventilated area and keep a CO2 fire extinguisher handy. Do not smoke while servicing fuel system. Keep open flames and sparks away from the work area.

  1. Disconnect the negative battery cable.
  2.  
  3. Support the engine using a suitable hoist or jack.
  4.  
  5. Remove the right engine mount and brackets.
  6.  
  7. Remove the rocker cover.

    Click image to see an enlarged view

    Fig. Exploded view of camshaft components-2.5L engine

  8.  
  9. Remove the power steering reservoir.
  10.  
  11. Remove the coolant overflow reservoir.
  12.  
  13. Disconnect variable timing control solenoid.
  14.  
  15. Loosen the camshaft timing control cover bolts in reverse order of the tightening sequence.

    Click image to see an enlarged view

    Fig. Valve timing control cover bolt tightening sequence-2.5L engine



    Click image to see an enlarged view

    Fig. Align cam timing marks to find TDC

  16.  
  17. Set the No.1 cylinder at TDC on its compression stroke with the following procedure:

    Open the splash cover under the engine.
     
    Rotate crankshaft pulley clockwise to align timing mark for TDC with timing indicator on front cover.
     
    Make sure the mating marks on camshaft sprockets are lined up with the yellow links in the timing chain as shown. If not, rotate crankshaft pulley one more turn to line up the mating marks to the yellow links.
     

  18.  
  19. Pull the timing chain guide out between the camshaft sprockets through front cover.
  20.  
  21. Remove camshaft sprockets with the following procedure.
    WARNING
    Do not rotate the crankshaft or camshaft while the timing chain is removed. This is an interference engine.


    NOTE
    Chain tension holding work is not necessary. Crankshaft sprocket and timing chain do not disconnect while front cover is attached.



    Make sure marks on camshaft sprockets are aligned with the yellow links in the timing chain
     
    Paint an indelible mating mark on the sprocket and timing chain link plate.
     
    Push in the chain tensioner plunger and insert a 0.020 in. (0.5 mm) pin into the hole on tensioner body to hold the chain tensioner.
     
    Remove the timing chain tensioner.

    Click image to see an enlarged view

    Fig. Push the chain tensioner plunger in and insert a pin to keep it retracted



    Click image to see an enlarged view

    Fig. Camshaft bearing cap bolt tightening order-2.5L engine

     

  22.  
  23. Hold the hexagonal part of camshaft with a wrench and loosen the camshaft sprocket mounting bolts to remove the camshaft sprockets.
  24.  
  25. Loosen the camshaft bearing cap bolts in reverse of the order and remove the caps. A rubber mallet may be needed.
  26.  
  27. Remove the camshafts.
  28.  
  29. When removing the valve lifters, keep them in order so they can be installed in the same locations.
  30.  

To install:

  1. Install the valve lifters.
  2.  
  3. Lubricate and carefully fit the camshafts into place. The back of the intake camshaft has the signal plate for the camshaft position sensor. Make sure the dowel pins on the front side are positioned as shown.

    Click image to see an enlarged view

    Fig. Make sure camshaft dowel pins are positioned as shown.

  4.  
  5. Install the camshaft bearing caps so the numbers or letters can be read from the exhaust side of the cylinder head. Caps 2, 3, 4 and 5 go on the intake camshaft, front to rear of engine. Caps A, B, C and D are front-to-rear exhaust camshaft caps. Make the bolts only finger tight at this time.
  6.  
  7. Make sure all sealing surfaces are clean and apply RTV sealant to the bracket where it contacts the cylinder head and the front cover. The sealant bead should be outside the bolt holes.
  8.  
  9. Position the camshaft bracket near the mounting position and install it without disturbing the sealant.
  10.  
  11. Tighten all camshaft bracket and bearing cap bolts in four steps in the order shown.

    Step 1, bolts 9-11: 17 inch lbs. (2 Nm)
     
    Step 2, bolts 1-8: 17 inch lbs. (2 Nm)
     
    Step 3, bolts 1-11 52 inch lbs. (6 Nm)
     
    Step 4, bolts 1-11: 92 inch lbs. (10 Nm)
     

  12.  
  13. Wipe off any excess sealant.
  14.  
  15. Install camshaft sprockets, making sure to line up the mating marks on each camshaft sprocket with the ones painted on the timing chain during removal.
    NOTE
    Before installation of chain tensioner, it is possible to re-match the marks on timing chain with the ones on each sprocket.

  16.  
  17. Install chain tensioner and check again to make sure that mating marks have not slipped.
  18.  
  19. Remove the stopper pin from the tensioner and check the timing marks again.
  20.  
  21. Install chain guide.
  22.  
  23. Install camshaft timing control cover with the following procedure.

    Install control solenoid valve to intake valve timing control cover.
     
    Install new O-ring to front cover side.
     

  24.  
  25. Apply RTV sealant to the cover. The bead should be inside the bolt holes.

    Install the control cover and tighten the bolts in numerical order to 9 ft. lbs. (12 Nm).
     

  26.  
  27. Check and adjust valve clearances.

    Installation of the remaining components is in the reverse order.
     

  28.  

Specific to:

Nissan Altima 2009-2010

  1. Remove the rocker cover.
  2.  
  3. Remove the front right side tire and wheel.
  4.  
  5. Remove the RH splash shield.
  6.  
  7. Remove the drive belt.
  8.  
  9. Remove the power steering reservoir.
  10.  
  11. Remove the coolant overflow reservoir tank.
  12.  
  13. Disconnect variable timing control solenoid and camshaft sensor harness connectors.

    Click image to see an enlarged view

    Fig. Exploded view of camshaft assembly

  14.  
  15. Remove camshaft sensor.
  16.  
  17. Remove camshaft sensor bracket.
  18.  
  19. Loosen the IVT control cover bolts in the order as shown.

    Click image to see an enlarged view

    Fig. Loosen the IVT control cover bolts in the order as shown

  20.  
  21. Remove the IVT control cover by cutting the sealant using Tool KV10111100 (J-37228).

    Click image to see an enlarged view

    Fig. Remove the IVT control cover by cutting the sealant

  22.  
  23. Set the No.1 cylinder at TDC on its compression stroke with the following procedure:

    Click image to see an enlarged view

    Fig. Set the No.1 cylinder at TDC on its compression stroke

    1. Open the splash cover on RH under cover.
    2.  
    3. Rotate crankshaft pulley clockwise, and align mating marks for TDC with timing indicator on front cover, as shown.
    4.  
    5. At the same time, make sure that the mating marks on camshaft sprockets are lined up with the yellow links in the timing chain, as shown.

      Click image to see an enlarged view

      Fig. Make sure that the mating marks on camshaft sprockets are lined up with the yellow links in the timing chain

    6.  
    7. If not, rotate crankshaft pulley one more turn to line up the mating marks to the yellow links, as shown.
    8.  

  24.  
  25. Pull the timing chain guide out between the camshaft sprockets through front cover.
  26.  
  27. Remove camshaft sprockets with the following procedure.
    CAUTION
    Do not rotate the crankshaft or camshaft while the timing chain is removed. It causes interference between valve and piston.


    NOTE
    Chain tension holding work is not necessary. Crankshaft sprocket and timing chain do not disconnect structurally while front cover is attached.

    1. Line up the mating marks on camshaft sprockets with the yellow links in the timing chain, and paint an indelible mating mark on the sprocket and timing chain link plate.
    2.  
    3. Push in the tensioner plunger and hold. Insert a stopper pin into the hole on tensioner body to hold the chain tensioner. Remove the timing chain tensioner.
      NOTE
      Use a wire with 0.02 inches (0.5 mm) diameter for a stopper pin.



      Click image to see an enlarged view

      Fig. Push in the tensioner plunger and hold; insert a stopper pin into the hole on tensioner body to hold the chain tensioner

    4.  
    5. Secure the hexagonal part of camshaft with a suitable tool.
    6.  
    7. Loosen the camshaft sprocket mounting bolts and remove the camshaft sprockets.

      Click image to see an enlarged view

      Fig. Loosen the camshaft sprocket mounting bolts and remove the camshaft sprockets

    8.  

  28.  
  29. Loosen the camshaft bracket bolts in the order as shown, and remove the camshaft brackets and camshafts.

    Click image to see an enlarged view

    Fig. Loosen the camshaft bracket bolts in the order as shown

  30.  
  31. Remove No.1 camshaft bracket by slightly tapping it with a rubber mallet.
  32.  
  33. Remove the valve lifters.
  34.  
  35. Check mounting positions, and set them aside in the order removed.
  36.  

To install:

  1. Install the valve lifter.
    NOTE
    Install them in the same position from which they were removed.

  2.  
  3. Install the camshafts.
    1. The distinction between the intake and exhaust camshafts is in a difference of shapes of the back end:

      A: Exhaust
       
      B: Intake Signal plate for the camshaft position sensor (PHASE)

      Click image to see an enlarged view

      Fig. A: Exhaust; B: Intake Signal plate for the camshaft position sensor (PHASE)

       

    2.  
    3. Install camshafts so that the dowel pins on the front side are positioned as shown.

      Click image to see an enlarged view

      Fig. Install camshafts so that the dowel pins on the front side are positioned as shown

    4.  

  4.  
  5. Install camshaft brackets.

    Click image to see an enlarged view

    Fig. Install camshaft brackets

    1. Install by referring to identification mark on upper surface mark.
    2.  
    3. Install so that identification mark can be correctly read when viewed from the exhaust side.
    4.  
    5. Install No. 1 camshaft bracket as follows.
    6.  
    7. Apply sealant to No.1 camshaft bracket as shown.
      NOTE
      Use Genuine Silicone RTV Sealant, or equivalent.


      CAUTION
      After installation, be sure to wipe off any excessive sealant leaking from part (A) (both on right and left sides).



      Click image to see an enlarged view

      Fig. Apply sealant to No.1 camshaft bracket as shown

    8.  
    9. Apply sealant to camshaft bracket contact surface on the front cover backside.
    10.  
    11. Apply sealant to the outside of bolt hole on front cover.

      Click image to see an enlarged view

      Fig. Apply sealant to the outside of bolt hole on front cover

    12.  
    13. Position the No.1 camshaft bracket near the mounting position, and install it without disturbing the sealant applied to the surfaces.

      Click image to see an enlarged view

      Fig. Position the No.1 camshaft bracket near the mounting position, and install it without disturbing the sealant applied to the surfaces

    14.  

  6.  
  7. Tighten camshaft bracket bolts in four steps in the order as shown.

    Click image to see an enlarged view

    Fig. Tighten camshaft bracket bolts in four steps in the order as shown

    1. Step 1: Bolts 9-11: 17 inch lbs. (2. Nm)
    2.  
    3. Step 2: Bolts 1-8: 17 inch lbs. (2. Nm)
    4.  
    5. Step 3: Bolts 1-11: 52 inch lbs. (6 Nm)
    6.  
    7. Step 4: Bolts 1-11: 92 inch lbs. (10 Nm)
      CAUTION
      After tightening camshaft bracket bolts, be sure to wipe off excessive sealant from the mating surface of rocker cover and the mating surface of front cover, when installed without the front cover.

    8.  

  8.  
  9. Install camshaft sprockets.

    Click image to see an enlarged view

    Fig. Install camshaft sprockets

    1. Install them by lining up the mating marks on each camshaft sprocket with the ones painted on the timing chain during removal.
    2.  
    3. Before installation of chain tensioner, it is possible to re-match the marks on timing chain with the ones on each sprocket.
      CAUTION
      Aligned mating marks could slip. Therefore, after matching them, hold the timing chain in place by hand. Before and after installing chain tensioner, check again to make sure that mating marks have not slipped.

    4.  

  10.  
  11. Install chain tensioner.
    CAUTION
    After installation, pull the stopper pin off completely, and make sure that the tensioner is fully released.

  12.  
  13. Install chain guide.
  14.  
  15. Install IVT control cover with the following procedure.
    1. Install IVT control solenoid valve to intake valve timing control cover.
    2.  
    3. Install O-ring to front cover side.
    4.  
    5. Apply Genuine Silicone RTV Sealant to the positions as shown.

      Click image to see an enlarged view

      Fig. Apply Genuine Silicone RTV Sealant to the positions as shown

    6.  
    7. Install IVT control cover.
    8.  
    9. Tighten the bolts in the numerical order as shown.

      Click image to see an enlarged view

      Fig. Tighten the bolts in the numerical order as shown

    10.  

  16.  
  17. Check and adjust valve clearances.
  18.  
  19. Installation of the remaining components is in the reverse order.
  20.  

 
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