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Home >> Nissan-Datsun >> 2008 >> Sentra SL >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 2 (Engine Mechanical (Qr25DE)) >> Camshaft >> Removal and Installation >> Removal

Removal and Installation: Removal

WARNING: This page is about a different variant/trim than selected.
  1. Remove the rocker cover. Refer to "REMOVAL AND INSTALLATION ".
  2. Remove the front right side tire and wheel using power tool.
  3. Remove the RH splash shield using power tool.
  4. Remove the drive belt. Refer to "REMOVAL ".
  5. Remove the coolant overflow reservoir tank.
  6. Disconnect variable timing control solenoid harness connector.
  7. Loosen the bolts in the order as shown.
    Fig 1: IVT (Intake Valve Timing) Control Cover Bolt With Loosening Sequence
    G04924786Courtesy of NISSAN MOTOR CO., U.S.A.
    • Remove the IVT control cover by cutting the sealant using Tool.

      Tool number : KV10111100 (J-37228) 

      Fig 2: Removing IVT (Intake Valve Timing) Control Cover
      G04885713Courtesy of NISSAN MOTOR CO., U.S.A.
  8. Set the No.1 cylinder at TDC on its compression stroke with the following procedure:
    1. Open the splash cover on RH under cover.
    2. Rotate crankshaft pulley clockwise, and align mating marks for TDC with timing indicator on front cover, as shown.
      Fig 3: Aligning Crankshaft Pulley Mating Marks To Timing Indicator On Front Cover
      G04885688Courtesy of NISSAN MOTOR CO., U.S.A.
    3. 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.
      • If not, rotate crankshaft pulley one more turn to line up the mating marks to the yellow links, as shown.
        Fig 4: Aligning Mating Marks Of Camshaft Sprockets With Timing Chain Yellow Links
        G04885733Courtesy of NISSAN MOTOR CO., U.S.A.
  9. Pull the timing chain guide out between the camshaft sprockets through front cover.
  10. 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.
      Fig 5: Locating Camshaft Sprocket Bolt
      G04885734Courtesy of NISSAN MOTOR CO., U.S.A.
    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. 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.
      • Use a wire with 0.5 mm (0.02 in) diameter for a stopper pin.
    3. Secure the hexagonal part of camshaft with a suitable tool. Loosen the camshaft sprocket mounting bolts and remove the camshaft sprockets.
      Fig 6: Inserting Stopper Pin Into Hole On Tensioner Body
      G04885735Courtesy of NISSAN MOTOR CO., U.S.A.
  11. Loosen the camshaft bracket bolts in the order as shown, and remove the camshaft brackets and camshafts.
    • Remove No.1 camshaft bracket by slightly tapping it with a rubber mallet.
  12. Remove the valve lifters.
    • Check mounting positions, and set them aside in the order removed.
      Fig 7: Camshaft Brackets Bolt With Loosening Sequence
      G04885736Courtesy of NISSAN MOTOR CO., U.S.A.
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