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Home >> Nissan-Datsun >> 2021 >> NV2500 HD S >> Repair and Diagnosis >> External Pages >> Different car >> Section 615 (Engine Mechanical) >> Removal And Installation >> Exhaust Manifold And Three Way Catalyst >> Removal and Installation (bank 1) >> Removal

Removal and Installation (bank 1): Removal

WARNING: This page is about a different car, the 2020 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 cowl top grille and the lower cowl top extension. Refer to Removal and Installation .
  2. Remove the front wheel and tire (RH) (AWD models only) using power tool. Refer to Adjustment .
  3. Remove the front under cover. Refer to Removal and Installation .
  4. Remove the front fender protector side cover (AWD models only). Refer to Exploded View .
  5. Remove the air breather hose. Refer to Removal and Installation .
  6. Remove the front exhaust tube, hanger and heat insulator. Refer to Exploded View .
  7. Remove the propeller shaft and propeller shaft center bearing (AWD models only). Refer to Removal and Installation .
  8. Remove the front drive shaft (RH) (AWD models only). Refer to Removal and Installation (RH) .
  9. Remove the three way catalyst support brackets (bank 1).
  10. Remove heated oxygen sensor 2 (bank 1), air fuel ratio (A/F) sensor 1 (bank 1).
    1. Disconnect the harness connector from each sensor, and remove the harness from the bracket and middle clamp.
    2. Remove both heated oxygen sensors and air fuel ratio (A/F) sensors using Tool.

      Tool numbers

      : KV10114400 (J-38365)

      : KV991J0050 (J-44626)
      CAUTION:
      • Do not 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.
  11. Remove exhaust manifold cover (bank 1) bolts in reverse of the sequence shown, below.
    GNSALBIA3199Z-199Courtesy of NISSAN NORTH AMERICA, INC.
    CAUTION: Do not reuse exhaust manifold and three way catalyst heat shield bolts.
    NOTE: Number 4 is not applicable to removal.
  12. Remove the three way catalyst (bank 1) by loosening the bolts first and then removing the nuts and through bolts.
  13. Loosen the exhaust manifold nuts in the reverse order as shown, below.
    G08768763Courtesy of NISSAN NORTH AMERICA, INC.
    NOTE: Number 7 and 8 are not applicable to removal.

    SYMBOL

    : Engine front
  14. Remove the exhaust manifold (bank 1) and exhaust manifold (bank 1) gasket.
    CAUTION: Do not reuse exhaust manifold gasket (bank 1).
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