EXHAUST MANIFOLD REMOVAL

CAUTION / NOTICE / HINT

The necessary procedures (adjustment, calibration, initialization or registration) that must be performed after parts are removed and installed, or replaced during exhaust manifold (TWC: Front Catalyst) and exhaust manifold assembly LH (TWC: Front Catalyst) removal/installation are shown below.

Necessary Procedures After Parts Removed/Installed/Replaced
Replaced Part or Performed Procedure Necessary Procedure Effect/Inoperative Function when Necessary Procedure not Performed Link

  • Replacement of air fuel ratio sensor

  • Gas leak from exhaust system is repaired

 Inspection After Repair

  • Poor idle, etc.

  • Engine start function, etc.

CAUTION:


  • B007YBA

    To prevent burns, do not touch the engine, exhaust manifold or other high temperature components while the engine is hot.

  • B007ZGP

    To prevent burns, do not touch the engine, exhaust pipe or other high temperature components while the engine is hot.

PROCEDURE


  1. DRAIN ENGINE COOLANT

    Click here

  2. REMOVE FRONT WHEEL RH

  3. REMOVE NO. 2 ENGINE UNDER COVER

    Click here

  4. REMOVE AIR FUEL RATIO SENSOR (for Bank 1)

    Click here

  5. REMOVE FRONT FLOOR COVER LH


    1. B007XBMC02
      B007WXX Bolt
      B00803L Screw

      Remove the clip (A), 2 screws and 4 bolts from the front floor cover LH.

    2. Disconnect the 2 clips (B) to remove the front floor cover LH.

  6. REMOVE FRONT NO. 3 EXHAUST PIPE SUB-ASSEMBLY


    1. B005LKI

      Disengage the 4 wire harness clamps.

    2. Disconnect the heated oxygen sensor (for Bank 1) connector.

    3. B005OXJC01
      B007WXX Bolt
      B00803L Nut

      Remove the 4 bolts, 2 nuts and 2 compression springs and front No. 3 exhaust pipe sub-assembly from the front exhaust pipe assembly and center exhaust pipe sub-assembly (TWC: Rear Catalyst).

    4. Remove the 3 exhaust pipe gaskets from the front No. 3 exhaust pipe sub-assembly, front exhaust pipe assembly and center exhaust pipe sub-assembly (TWC: Rear Catalyst).

  7. REMOVE MANIFOLD STAY


    1. B005NBTC01
      B007WXX Bolt
      B00803L Nut

      Remove the bolt and nut to remove the manifold stay from the exhaust manifold (TWC: Front Catalyst) and rear engine mounting bracket.

  8. REMOVE EXHAUST MANIFOLD (TWC: Front Catalyst)


    1. B007ZZX

      Using a 12 mm deep socket wrench, remove the 4 nuts and exhaust manifold (TWC: Front Catalyst) from the cylinder head sub-assembly RH.

  9. REMOVE EXHAUST MANIFOLD TO HEAD GASKET (for Bank 1)


    1. B005L7V

      Remove the exhaust manifold to head gasket (for Bank 1) from the cylinder head sub-assembly RH.

  10. REMOVE NO. 1 EXHAUST PIPE SUPPORT BRACKET (for Lower Side)

    Click here

  11. REMOVE FRONT EXHAUST PIPE ASSEMBLY

    Click here

  12. REMOVE ENGINE OIL LEVEL DIPSTICK GUIDE

    Click here

  13. REMOVE V-BANK COVER SUB-ASSEMBLY

    Click here

  14. REMOVE NO. 2 EXHAUST MANIFOLD HEAT INSULATOR


    1. B005PFJ

      Disconnect the air fuel ratio sensor connector.

    2. Disengage the wire harness clamp.

    3. B007XDX

      Remove the 3 bolts and No. 2 exhaust manifold heat insulator from the exhaust manifold assembly LH (TWC: Front Catalyst).

  15. REMOVE AIR FUEL RATIO SENSOR (for Bank 2)

    Click here

  16. REMOVE NO. 2 MANIFOLD STAY


    1. B005NFPC03
      B007WXX Bolt
      B00803L Nut

      Remove the bolt and nut and No. 2 manifold stay from the exhaust manifold assembly LH (TWC: Front Catalyst) and cylinder block sub-assembly.

  17. REMOVE EXHAUST MANIFOLD ASSEMBLY LH (TWC: Front Catalyst)


    1. B005MB0

      Disconnect the 2 No. 2 cooling fan motor connectors.

    2. B005OH1

      Slide the clip and disconnect the No. 1 radiator hose from the radiator assembly.

    3. B007X29

      Using a 12 mm deep socket wrench, remove the 4 nuts and exhaust manifold assembly LH (TWC: Front Catalyst).

  18. REMOVE EXHAUST MANIFOLD TO HEAD GASKET (for Bank 2)


    1. B005PK6

      Remove the exhaust manifold to head gasket (for Bank 2) from the cylinder head sub-assembly.

  19. REMOVE STUD BOLT

    Tech Tips

    If a stud bolt is deformed or its threads are damaged, replace it.


    1. B005M8S

      Using an E8 "TORX" socket wrench, remove the 2 stud bolts from the exhaust manifold (TWC: Front Catalyst).

    2. B005PN8

      Using an E8 "TORX" socket wrench, remove the 2 stud bolts from the exhaust manifold assembly LH (TWC: Front Catalyst).