LEMON Manuals: Even more car manuals for everyone
Home >> Nissan-Datsun >> 2011 >> Sentra S >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 3 (Engine Mechanical (Qr25DE)) >> Service Information >> Exhaust Manifold And Three Way Catalyst >> Removal and Installation >> Removal

Removal and Installation: Removal

WARNING: This page is about a different variant/trim than selected.
  1. Remove the engine under cover. Refer to "REMOVAL AND INSTALLATION ".
  2. Remove the splash shield (RH). Refer to "COMPONENT ".
  3. Remove the front air duct. Refer to "REMOVAL AND INSTALLATION ".
  4. Remove generator and generator bracket. Refer to "REMOVAL AND INSTALLATION QR25DE ".
  5. Remove the exhaust front tube. Refer to "COMPONENT ".
  6. Remove oil level indicator tube.
  7. Disconnect the electrical connector of heated oxygen sensor 1 or air fuel ratio (A/F) sensor 1, and unhook the harness from the bracket and middle clamp on the cover.
  8. Remove the heated oxygen sensor 1 or air fuel ratio (A/F) sensor 1 using Tool.

    Tool numbers : KV991J0050 (J-44626) 

    : KV10117100 (J-36471-A) 

    Fig 1: Removing Heated Oxygen Sensor
    G07137432Courtesy of NISSAN MOTOR CO., U.S.A.
    CAUTION:
    • Be careful not to damage heated oxygen sensor or air fuel ratio (A/F) sensor.
    • Discard any heated oxygen sensor or air fuel ratio (A/F) sensor which has been dropped from a height of more than 0.5 m (19.7 in) onto a hard surface such as a concrete floor; use a new one.
  9. Remove the lower exhaust manifold covers.
  10. Remove the upper exhaust manifold cover.
  11. Loosen the nuts in reverse of the order shown in the figure, on the exhaust manifold and three way catalyst.
  12. Remove the exhaust manifold and three way catalyst assembly and gasket. Discard the gasket.
    Fig 2: Exhaust Manifold Nuts (Reverse For Loosening)
    G07137433Courtesy of NISSAN MOTOR CO., U.S.A.