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Home >> Toyota >> 2003 >> Sequoia SR5, 4WD >> Repair and Diagnosis >> Engine Mechanical >> Engine Exhaust Assembly >> Replacement

Engine Exhaust Assembly: Replacement

  1. DISCONNECT HEATED OXYGEN SENSOR 
    1. Remove the 4 nuts and 2 protectors.
    2. Remove the 2 heated oxygen sensors and gaskets from the front exhaust pipe.
  2. REMOVE RH FRONT EXHAUST PIPE 
    1. Remove the 3 nuts from the RH front exhaust pipe front side.
    2. Remove the 2 bolts and lock nut from the RH front exhaust pipe rear side.
    3. Remove the RH front exhaust pipe and 2 gaskets.
  3. REMOVE LH FRONT EXHAUST PIPE 
    1. Remove the 3 nuts from the LH front exhaust pipe front side.
    2. Remove the 2 bolts and lock nut from the LH front exhaust pipe rear side.
    3. Remove the LH front exhaust pipe from the ring.
    4. Remove the 2 gaskets from the LH front exhaust pipe.
  4. REMOVE CENTER EXHAUST PIPE 
    1. Remove the bolt and clamp.
    2. Remove the center exhaust pipe from the 5 rings.
  5. REMOVE EXHAUST TAIL PIPE 

    Remove the exhaust tail pipe from the 2 rings.

  6. REMOVE HEAT INSULATOR 
  7. INSTALL HEAT INSULATOR 
  8. INSTALL EXHAUST TAIL PIPE 

    Install the exhaust tail pipe to the 2 rings.

  9. INSTALL CENTER EXHAUST PIPE 
    1. Install a new gasket to the center exhaust pipe rear side.
    2. Install the center exhaust pipe to the 5 rings.
    3. Install a new clamp with the bolt.

      HINT:

      For the installation direction of the clamp, see COMPONENTS .

      Torque: 32 N.m (326 kgf.cm, 24 ft.lbf) 

  10. INSTALL LH FRONT EXHAUST PIPE 
    1. Install 2 new gaskets to the LH front exhaust pipe.
    2. Install the LH front exhaust pipe to the ring.
    3. Install the 2 bolts and lock nut.

      Torque: 48 N.m (489 kgf.cm, 35 ft.lbf) 

    4. Install 3 new nuts to the LH front exhaust pipe front side.

      Torque: 62 N.m (632 kgf.cm, 46 ft.lbf) 

  11. INSTALL RH FRONT EXHAUST PIPE 
    1. Install 2 new gaskets to the RH front exhaust pipe.
    2. Install the 2 bolts and lock nut.

      Torque: 48 N.m (489 Kgf.cm, 35 ft.lbf) 

    3. Install 3 new nuts to the RH front exhaust pipe front side.

      Torque: 62 N.m (632 Kgf.cm, 46 ft.lbf) 

  12. INSTALL HEATED OXYGEN SENSOR 
    1. Install 2 new gaskets from the 2 heated oxygen sensors.
    2. Install the 2 heated oxygen sensors and protector with the 4 nuts from the front exhaust pipe.

      Torque: 20 N.m (200 Kgf.cm, 14 ft.lbf)