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Home >> Infiniti >> 2015 >> QX60 Base, FWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 23 (Engine Mechanical (Except Hybrid)) >> Removal And Installation >> Exhaust Manifold And Three Way Catalyst >> Removal And Installation (Bank 2) >> Removal

Removal And Installation (Bank 2): Removal

WARNING: This page is about a different car, the 2016 Infiniti QX60. However, it is still accessible from the selected car via links, so may be relevant.
WARNING:
  • Perform the work when the exhaust system has completely cooled down.
  • When removing the front and rear engine through bolts and nuts, lift the engine up slightly for safety.
NOTE:

When removing components such as hoses, tubes/lines, etc., cap or plug openings to prevent fluid from spilling.

  1. Remove the air cleaner case (upper), air cleaner case (lower), and air duct hose and resonator assembly. Refer to REMOVAL AND INSTALLATION .
  2. Remove the battery and battery tray assembly. Refer to REMOVAL AND INSTALLATION .
  3. Remove the front wheels and tires using power tool. Refer to ADJUSTMENT .
  4. Remove the front under cover. Refer to EXPLODED VIEW .
  5. Remove the fender protector side covers (LH and RH). Refer to EXPLODED VIEW .
  6. Remove the radiator assembly. Refer to REMOVAL AND INSTALLATION .
  7. Remove the engine cooling fan shroud and motor assembly. Refer to REMOVAL AND INSTALLATION .
  8. Remove the front exhaust tube. Refer to EXPLODED VIEW .
  9. Support the engine with a suitable tool.
  10. Remove the engine mount bracket (front). Refer to EXPLODED VIEW  (FWD) or EXPLODED VIEW  (AWD).
  11. Remove the three way catalyst support brackets (bank 2).
  12. Remove heated oxygen sensor 2 (bank 2), air fuel ratio (A/F) sensor 1 (bank 2).
    1. Disconnect the harness connector from each sensor, and remove the harness from the bracket and middle clamp.
    2. Remove both heated oxygen sensor and air fuel ratio (A/F) sensor using Tool.
      Tool numbers : KV10114400 (J-38365)
        : KV991J0050 (J-44626)
      CAUTION:
      • Be careful not to damage heated oxygen sensors or air fuel ratio (A/F) sensors.
      • Discard any heated oxygen 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; replace with a new sensor.
  13. Remove exhaust manifold and three way catalyst heat shields with power tool.
  14. Remove the three way catalyst (bank 2) by loosening the bolts first and then removing the nuts and through bolts.
  15. Loosen and remove the exhaust manifold nuts in the reverse order as shown in illustration.
    Fig 1: Exhaust Manifold Nuts Tightening Sequence
    G08768759Courtesy of NISSAN NORTH AMERICA, INC.
    ARROW : Engine front
    NOTE:

    Number 7 and 8 are not applicable to removal.

  16. Remove the exhaust manifold (bank 2) and gasket.
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