Altima 2007-2009

Timing Chain Front Cover

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Removal & Installation



2.5L Engine

Specific to:

Nissan Altima 2009-2010

  1. Support the engine and transaxle assembly with suitable tools.
  2.  
  3. Remove RH splash shield.
  4.  
  5. Remove the upper and lower oil pan, and oil strainer.
  6.  
  7. Remove the alternator.
  8.  
  9. Remove the engine cover.
  10.  
  11. Disconnect variable timing control solenoid harness connector.
  12.  
  13. Remove the engine ground.
  14.  
  15. Remove the coolant overflow reservoir tank.
  16.  
  17. Position the RH engine compartment fuse and relay box aside.
  18.  
  19. Remove the RH engine mount and bracket.
  20.  
  21. Loosen bolts in the numerical order as shown.

    Click image to see an enlarged view

    Fig. Loosen bolts in the numerical order as shown

  22.  
  23. Remove the IVT (intake valve timing) control cover using Tool KV10111100 (J-37228).

    Click image to see an enlarged view

    Fig. Remove the IVT (intake valve timing) control cover using Tool KV10111100 (J-37228)

  24.  
  25. Pull chain guide between camshaft sprockets out through front cover.
  26.  
  27. Set the No.1 cylinder at TDC on the compression stroke with the following procedure:

    Click image to see an enlarged view

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

    1. Rotate the crankshaft pulley clockwise and align the mating marks to the timing indicator on the front cover.
    2.  
    3. At the same time, make sure that the mating marks on the camshaft sprockets are lined up as shown.

      Click image to see an enlarged view

      Fig. Make sure that the mating marks on the camshaft sprockets are lined up as shown

    4.  
    5. If not lined up, rotate the crankshaft pulley one more turn to line up the mating marks to the positions as shown.
    6.  

  28.  
  29. Remove crankshaft pulley with the following procedure:
    1. Hold the crankshaft pulley using suitable tool, then loosen the crankshaft pulley bolt, and pull the pulley out about 0.39 inches (10 mm).
    2.  
    3. Attach suitable pulley puller in the thread hole on crankshaft pulley, and remove crankshaft pulley using a suitable puller.
    4.  

  30.  
  31. Remove the front cover with the following procedure:
    1. Loosen the bolts in the numerical order as shown, and remove them.

      Click image to see an enlarged view

      Fig. Loosen the bolts in the numerical order as shown, and remove them

    2.  
    3. Remove the front cover.
      CAUTION
      Be careful not to damage the mounting surface.

    4.  

  32.  

To install:

  1. Install front cover with the following procedure:
    1. Install O-rings to cylinder head and cylinder block.
    2.  
    3. Apply Genuine Silicone RTV Sealant or equivalent, to front cover.
    4.  
    5. Make sure the mating marks on the timing chain and each sprocket are still aligned. Then install the front cover.
      CAUTION
      Be careful not to damage the front oil seal during installation with the front end of the crankshaft.

    6.  
    7. Tighten front cover bolts in the numerical order as shown.

      Click image to see an enlarged view

      Fig. Tighten front cover bolts in the numerical order as shown

    8.  
    9. After all bolts are tightened, retighten them to the specified torque:
      CAUTION
      Wipe off any excess sealant leaking at the surface for installing the oil pan.



      Bolts A: 36 ft. lbs. (49 Nm)
       
      Bolts B: 9 ft. lbs. (13 Nm)
       
      Bolts C: 9 ft. lbs. (13 Nm)
       
      Bolts D: 36 ft. lbs. (49 Nm)
       
      Dowel pins
       

    10.  

  2.  
  3. Install the chain guide between the camshaft sprockets.
  4.  
  5. Install IVT cover with the following procedure:
    1. Install IVT solenoid valve to IVT cover.
    2.  
    3. Install new O-ring to front cover.
    4.  
    5. Apply Silicone RTV Sealant to the IVT cover as shown.

      Click image to see an enlarged view

      Fig. Apply Silicone RTV Sealant to the IVT cover as shown

    6.  
    7. Tighten the IVT cover bolts in the numerical order as shown.

      Click image to see an enlarged view

      Fig. Tighten the IVT cover bolts in the numerical order as shown

    8.  

  6.  
  7. Insert crankshaft pulley by aligning with crankshaft key.
    1. Tap its center with a plastic hammer to insert.
    2.  
    3. Do not tap the belt hook.
    4.  

  8.  
  9. Tighten crankshaft pulley bolts.
    1. Secure crankshaft pulley with tool to tighten the bolt.
    2.  
    3. Perform angle tightening with the following procedure:
    4.  
    5. Apply new engine oil to threads and seat surfaces of bolts.
    6.  
    7. Tighten to initial specifications:·31 ft. lbs. (42 Nm).
    8.  
    9. Apply a paint mark on the front cover, mating with any one of six easy to recognize stamp marks on bolt flange.
    10.  
    11. Turn crankshaft pulley bolt another 60° to 66° (Target: 60°).

      Click image to see an enlarged view

      Fig. Turn crankshaft pulley bolt

    12.  
    13. Check vertical mounting angle with movement of one stamp mark.
    14.  

  10.  
  11. Installation of the remaining components is in the reverse order of removal.
  12.  

3.5L Engine

Specific to:

Nissan Altima 2009-2010


NOTE



This section describes the procedure for removal/installation of the front timing chain case without removing the oil pan (upper) from the vehicle.
 
When rear timing chain case must be removed, remove the engine from the vehicle. Then remove front timing chain case, timing chain related parts, and rear timing chain case in this order, and install in reverse order of removal.
 

  1. Disconnect the battery negative terminal.
  2.  
  3. Remove engine under cover.
  4.  
  5. Drain the engine coolant from the radiator.
  6.  
  7. Drain the engine oil.
  8.  
  9. Drain the power steering fluid.
  10.  
  11. Remove engine room cover.
  12.  
  13. Remove front air duct.
  14.  
  15. Remove battery tray.
  16.  
  17. Remove cowl top and cowl top extension.
  18.  
  19. Remove upper radiator hose.
  20.  
  21. Disconnect engine coolant reservoir hose from the radiator and remove engine coolant reservoir.
  22.  
  23. Remove cooling fan assembly.
  24.  
  25. Disconnect lower radiator hose from engine.
  26.  
  27. Recover the A/C system R134a.
  28.  
  29. Remove the starter motor.
  30.  
  31. Disconnect the power steering fluid reservoir tank hose from the power steering pump and fluid cooler and remove the power steering fluid reservoir tank.
  32.  
  33. Remove the front RH wheel and tire.
  34.  
  35. Remove the engine side under cover.
  36.  
  37. Remove the drive belt.
  38.  
  39. Remove the power steering pump.
  40.  
  41. Remove the lower oil pan. Loosen the lower oil pan bolts in order as shown.

    Click image to see an enlarged view

    Fig. Loosen the lower oil pan bolts in order as shown

    1. Insert Tool between the lower oil pan and the upper oil pan.
    2.  
    3. Be careful not to damage the mating surface.
      CAUTION
      Do not insert a screwdriver, this will damage the mating surfaces.

    4.  
    5. Slide the Tool by tapping its side with a hammer to remove the lower oil pan from the upper oil pan.
    6.  

  42.  
  43. Remove upper oil pan bolts in reverse order as shown.

    Click image to see an enlarged view

    Fig. Remove upper oil pan bolts in reverse order as shown

  44.  
  45. Remove the alternator.
  46.  
  47. Disconnect the A/C tubes from the A/C compressor and position aside.
  48.  
  49. Remove the A/C compressor bolts and remove the A/C compressor.
  50.  
  51. Remove the alternator bracket.
  52.  
  53. Support the engine with suitable jack and remove the RH engine insulator, mount and bracket.
  54.  
  55. Remove the rocker covers, if necessary.
    NOTE
    Necessary only when removing timing chains.

  56.  
  57. If removing the timing chains, obtain compression TDC of No. 1 cylinder as follows:
    1. Rotate crankshaft pulley clockwise to align timing mark (grooved line without color) with timing indicator.

      Click image to see an enlarged view

      Fig. Rotate crankshaft pulley clockwise to align timing mark (grooved line without color) with timing indicator

    2.  
    3. Check that intake and exhaust camshaft lobes on No. 1 cylinder (right bank of engine) are located as shown.

      Click image to see an enlarged view

      Fig. Check that intake and exhaust camshaft lobes on No. 1 cylinder (right bank of engine) are located as shown

    4.  
    5. If not, turn the crankshaft one revolution (360°) and align as shown.
    6.  

  58.  
  59. Lock the drive plate using Tool KV10117700 (J-44716) attached to the starter bolt hole.
    CAUTION
    Do not damage the ring gear teeth, or the signal plate teeth behind the ring gear, when setting the Tool.



    Click image to see an enlarged view

    Fig. Lock the drive plate using Tool KV10117700 (J-44716) attached to the starter bolt hole

  60.  
  61. Remove the crankshaft pulley as follows:
    1. Loosen crankshaft pulley bolt using suitable tool and locate bolt seating surface at 0.39 inches (10 mm) from its original position.
    2.  
    3. Position a pulley puller at recess hole of crankshaft pulley to remove crankshaft pulley.
      CAUTION
      Do not use a puller claw on crankshaft pulley periphery.

    4.  

  62.  
  63. Remove engine oil cooler tube bolts and bracket.
  64.  
  65. Disconnect the oil pressure switch harness connector.
  66.  
  67. Disconnect valve timing control harness connector.
  68.  
  69. Remove the Bank 1 (RH) and Bank 2 (LH) IVT covers.

    Click image to see an enlarged view

    Fig. Remove the Bank 1 (RH) (A) and Bank 2 (LH) (B) IVT covers

  70.  
  71. Loosen the IVT cover bolts in the reverse order as shown.
    CAUTION
    The shaft in the IVT cover is inserted into the center hole of the intake camshaft sprocket. Remove the IVT cover by pulling straight out until the IVT cover disengages from the camshaft sprocket.

  72.  
  73. Remove the A/C idler pulley and bracket and the drive belt auto-tensioner.
  74.  
  75. If necessary, remove the idler pulley and water pump cover.
  76.  
  77. Remove the front timing chain case.
    1. Loosen the front timing chain case bolts in the order as shown.

      Click image to see an enlarged view

      Fig. Loosen the front timing chain case bolts in the order as shown

    2.  
    3. Insert the appropriate size tool into the notch at the top of the front timing chain case.
    4.  
    5. Pry off the case by moving the suitable tool back and forth.
      CAUTION
      Do not use a screwdriver or similar tool. After removal, handle carefully so it does not bend, or warp under a load.

    6.  

  78.  
  79. Remove O-rings from rear timing chain case.
    1. A: Bank 1
    2.  
    3. B: Bank 2
      CAUTION
      Use new O-rings for installation.



      Click image to see an enlarged view

      Fig. Remove O-rings (1) from rear timing chain case of Bank 1 (A) and Bank 2 (B)

    4.  

  80.  
  81. Remove the front oil seal from the front timing chain case using a suitable tool.
    CAUTION
    Do not damage the front cover.

  82.  
  83. Remove all old Silicone RTV Sealant from all the bolt holes and bolts.
    CAUTION
    Do not damage the threads or mating surfaces.

  84.  
  85. Use a scraper to remove all of the old Silicone RTV Sealant from the front timing chain case and opposite mating surfaces.
    CAUTION
    Do not damage the mating surfaces.

  86.  

To install:

  1. Install dowel pins (right and left) into front timing chain case up to a point close to taper in order to shorten protrusion length.

    Click image to see an enlarged view

    Fig. Install dowel pins (right and left) into front timing chain case

  2.  
  3. Install the new front oil seal on the front timing chain case. Apply new engine oil to the oil seal edges.
    1. Install the new front oil seal so that it becomes flush with the face with front timing chain case using suitable drift.
      CAUTION
      Press fit straight and avoid causing burrs or tilting the oil seal.


      NOTE
      Make sure the garter spring is in position and seal lip is not inverted.

    2.  

  4.  
  5. Install new O-rings on rear timing chain case.
    CAUTION
    Use new O-rings for installation.

  6.  
  7. Apply Silicone RTV Sealant to front timing chain case.
    NOTE
    Use Genuine Silicone RTV Sealant, or equivalent. Before installation, wipe off the protruding sealant.

  8.  
  9. Install dowel pin on the rear timing chain case into dowel pin hole in front timing chain case.
  10.  
  11. Loosely install the front timing chain case bolts.
  12.  
  13. Tighten the front timing chain case bolts in the order as shown.

    Click image to see an enlarged view

    Fig. Tighten the front timing chain case bolts in the order as shown

  14.  
  15. Retighten the front timing chain case bolts in the order as shown.
    1. Tighten bolts 1 and 2 to 21 ft. lbs. (28 Nm).
    2.  
    3. Tighten bolts 3-22 to 9 ft. lbs. (13 Nm).
    4.  

  16.  
  17. Install upper oil pan bolts.
  18.  
  19. Install lower oil pan.
  20.  
  21. Install IVT control valve covers.
    1. Install new seal rings in shaft grooves.
      CAUTION
      When replacing seal rings, replace all rings with new ones on both RH and LH IVT control valve covers.

    2.  
    3. Install IVT covers with a new gasket to front timing chain case.
    4.  
    5. Being careful not to move seal ring from the installation groove, align the dowel pins on the front timing chain case with the holes to install valve timing control covers.
    6.  
    7. Tighten bolts in the numerical order as shown to 8 ft. lbs. (11 Nm).

      Click image to see an enlarged view

      Fig. Tighten bolts in the numerical order as shown

    8.  

  22.  
  23. Apply liquid gasket and install the water pump cover, if removed.
    NOTE
    Use Genuine Silicone RTV Sealant or equivalent.

  24.  
  25. Install crankshaft pulley and tighten the bolt in two steps.
    1. Lubricate thread and seat surface of the bolt with new engine oil.
    2.  
    3. Apply a paint mark for the second step of angle tightening.
    4.  
    5. Step 1: 32 ft. lbs. (44 Nm)
    6.  
    7. Step 2: Additional 84-90 degrees clockwise
    8.  

  26.  
  27. Rotate crankshaft pulley in normal direction (clockwise when viewed from front) to confirm it turns smoothly.
  28.  
  29. Installation of the remaining components is in reverse order of removal.
  30.  

 
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