Exhaust Pipe Installation

Engine. Lexus Is250, Is220D. Gse20 Ale20
4Gr-Fse Exhaust. Lexus Is250, Is220D. Gse20 Ale20

  1. INSTALL TAIL EXHAUST PIPE BAFFLE SUB-ASSEMBLY

  2. INSTALL EXHAUST PIPE DAMPER

  3. INSTALL TAIL EXHAUST PIPE ASSEMBLY

  4. INSTALL FRONT EXHAUST PIPE ASSEMBLY

  5. INSTALL HEATED OXYGEN SENSOR

  6. INSTALL FRONT CENTER FLOOR BRACE

  7. INSTALL REAR NO. 1 FLOOR PANEL BRACE

  8. CHECK FOR EXHAUST GAS LEAKS

Exhaust Pipe -- Installation



1. INSTALL TAIL EXHAUST PIPE BAFFLE SUB-ASSEMBLY
  1. Align the baffle with the protruding part of the tail exhaust pipe assembly as shown in the illustration.



    Lexus Is250, Is220D. Gse20 Ale20.4Gr-Fse Exhaust.Exhaust Pipe.Exhaust Pipe  Installation
  1. Using a plastic hammer, uniformly tap the exhaust pipe baffle sub-assemblies onto the tail exhaust pipe assembly.



2. INSTALL EXHAUST PIPE DAMPER


    Lexus Is250, Is220D. Gse20 Ale20.4Gr-Fse Exhaust.Exhaust Pipe.Exhaust Pipe  Installation
  1. Install the exhaust pipe damper with the 2 bolts.

    Torque:
    19 N*m{194 kgf*cm, 14 ft.*lbf}


3. INSTALL TAIL EXHAUST PIPE ASSEMBLY


    Lexus Is250, Is220D. Gse20 Ale20.4Gr-Fse Exhaust.Exhaust Pipe.Exhaust Pipe  Installation
  1. Install the tail exhaust pipe assembly with the 6 exhaust pipe supports.



4. INSTALL FRONT EXHAUST PIPE ASSEMBLY


    Lexus Is250, Is220D. Gse20 Ale20
  1. Using a vernier caliper, measure the free length of the compression springs.

    Minimum length:
    38.5 mm (1.516 in.)
    If the free length is less than the minimum, replace the compression spring.


    Lexus Is250, Is220D. Gse20 Ale20.4Gr-Fse Exhaust.Exhaust Pipe.Exhaust Pipe  Installation
  1. Install a new gasket to the rear end of the front exhaust pipe.

    NOTICE:
    1. Be careful with the installation direction of the gasket.
    1. Do not reuse the gasket.
    1. To ensure a proper seal, do not use the tail exhaust pipe to force the gasket onto the front exhaust pipe.
      HINT:
      Using a plastic hammer, uniformly strike the gasket so that the gasket and front exhaust pipe are properly fit.
  1. Install 3 new gaskets and front exhaust pipe assembly.

    CAUTION:
    Do not reuse the gaskets.


    Lexus Is250, Is220D. Gse20 Ale20
  1. Install the 2 bolts and 2 compression springs.

    Torque:
    43 N*m{438 kgf*cm, 32 ft.*lbf}


    Lexus Is250, Is220D. Gse20 Ale20.4Gr-Fse Exhaust.Exhaust Pipe.Exhaust Pipe  Installation
  1. Install 4 new nuts and 4 bolts.

    Torque:
    62 N*m{632 kgf*cm, 46 ft.*lbf}
    NOTICE:
    Do not reuse the nuts.


5. INSTALL HEATED OXYGEN SENSOR


    Lexus Is250, Is220D. Gse20 Ale20
  1. Before installing the heated oxygen sensors, twist the sensor wires counterclockwise 4 turns.



    Lexus Is250, Is220D. Gse20 Ale20.4Gr-Fse Exhaust.Exhaust Pipe.Exhaust Pipe  Installation
  1. Using the SST, install the heated oxygen sensors to the front exhaust pipe.

    SST
    09224-00010
    Torque:
    44 N*m{449 kgf*cm, 33 ft.*lbf}
  1. After installing the sensors, check that the sensor wires are not twisted.
    If the sensor wires are twisted, reinstall them.



    Lexus Is250, Is220D. Gse20 Ale20.4Gr-Fse Exhaust.Exhaust Pipe.Exhaust Pipe  Installation
  1. Install the grommets of the heated oxygen sensors.



6. INSTALL FRONT CENTER FLOOR BRACE


    Lexus Is250, Is220D. Gse20 Ale20
  1. Install the front center floor brace with the 4 bolts.

    Torque:
    7.4 N*m{75 kgf*cm, 65 in.*lbf}


7. INSTALL REAR NO. 1 FLOOR PANEL BRACE


    Lexus Is250, Is220D. Gse20 Ale20
  1. Install the rear No. 1 floor panel brace with the 4 bolts.

    Torque:
    19 N*m{194 kgf*cm, 14 ft.*lbf}


8. CHECK FOR EXHAUST GAS LEAKS
If exhaust gas is leaking, tighten the related parts to stop the leak. Replace damaged parts as necessary.