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HOMESERVICE MANUALSNISSAN-DATSUN2012SENTRA SE-RREPAIR AND DIAGNOSIS (SINGLE PAGE)ENGINE MECHANICALENGINE MECHANICAL (QR25DE)SERVICE INFORMATIONCAMSHAFTREMOVAL AND INSTALLATIONREMOVAL
2012 Nissan-Datsun Sentra SE-R

Removal and Installation: Removal

2012 Nissan-Datsun Sentra SE-RSECTION Removal
  1. Disconnect battery negative terminal. Refer to "REMOVAL AND INSTALLATION (QR25DE BATTERY) ".
  2. Remove the rocker cover. Refer to "REMOVAL AND INSTALLATION ".
  3. Remove the splash shield (RH). Refer to "COMPONENT " .
  4. Support the front of the engine using a suitable jack.
  5. Remove the torque rod and the engine mounting insulator and bracket (RH). Refer to "REMOVAL AND INSTALLATION ".
  6. Remove the coolant overflow reservoir tank.
  7. Disconnect variable timing control solenoid harness connector.
  8. Loosen the IVT control cover bolts in the order as shown below.
    Fig 1: Identifying IVT Control Cover Bolt Loosening Sequence
    G04924812Courtesy of NISSAN NORTH AMERICA, INC.
    • Remove the IVT control cover by cutting the sealant using Tool.

      Tool number: KV10111100 (J-37228) 

      Fig 2: Cutting Sealant Using Tool
      G04885713Courtesy of NISSAN NORTH AMERICA, INC.
  9. Set the No. 1 cylinder at TDC on its compression stroke with the following procedure:
    1. Rotate crankshaft pulley clockwise, and align mating marks for TDC with timing indicator on front cover, as shown below.
      Fig 3: Identifying Timing Marks
      G06549937Courtesy of NISSAN NORTH AMERICA, INC.
    2. 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 below.
      • If not, rotate crankshaft pulley one more turn to line up the mating marks to the yellow links, as shown below.
        Fig 4: Identifying Mating Marks On Camshaft Sprockets
        G04885733Courtesy of NISSAN NORTH AMERICA, INC.
  10. Disconnect and remove the camshaft position sensor.
  11. Pull the timing chain guide out between the camshaft sprockets through front cover.
  12. Remove camshaft sprockets with the following procedure.
    CAUTION:
    • Do not rotate the crankshaft or camshaft while the timing chain is removed.
    • Rotating the crankshaft or the camshaft after the timing chain has been removed causes interference between the valves and pistons.
RENDER: 1.0x

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • • You smell fuel, burning insulation, or see smoke.
  • • Brakes feel soft, pull hard to one side, or make grinding noises.
  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
  • • You are not confident in the next step or safety outcome.