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Home >> Toyota >> 2016 >> Prius C One >> Repair and Diagnosis >> Engine Mechanical >> Mechanical >> Intake / Exhaust System (Service Information) >> Exhaust Manifold & Catalytic Converter >> Installation [11/2015 - 06/2017] >> Procedure

Installation [11/2015 - 06/2017]: Procedure

  1. INSTALL HEATED OXYGEN SENSOR 

    Refer to PROCEDURE - Step 1

  2. INSTALL NO. 2 EXHAUST MANIFOLD HEAT INSULATOR 
    1. Install the No. 2 exhaust manifold heat insulator with the 3 bolts.

      Torque: 8.0 N*m (82 kgf*cm, 71 in.*lbf) 

  3. INSTALL EXHAUST MANIFOLD 
    1. Set a new gasket to the cylinder head sub-assembly.
    2. Temporarily install the exhaust manifold with the 3 bolts and 2 nuts.
    3. Temporarily install the manifold support bracket with the 3 bolts.
    4. Tighten the exhaust manifold with the 3 bolts and 2 nuts.
      GTY726104Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002.
      TEXT IN ILLUSTRATION

      *1 Bolt
      *2 Nut

      Torque: 30 N*m (306 kgf*cm, 22 ft.*lbf) 

    5. Connect the wire harness clamp and heated oxygen sensor connector.
    6. Remove the 3 bolts and manifold support bracket.
  4. INSTALL NO. 1 EGR PIPE 
    1. Install a new gasket and No. 1 EGR pipe with the bolt and nut.

      Torque: 31 N*m (316 kgf*cm, 23 ft.*lbf) 

  5. INSTALL MANIFOLD SUPPORT BRACKET 
    1. Install the manifold support bracket with the 4 bolts.
      GTY705603Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002.

      Bolt A 

      Torque: 44 N*m (449 kgf*cm, 32 ft.*lbf) 

      Bolt B 

      Torque: 10 N*m (102 kgf*cm, 7 ft.*lbf) 

  6. INSTALL NO. 1 EXHAUST MANIFOLD HEAT INSULATOR 
    1. Install the No. 1 exhaust manifold heat insulator with the 3 bolts.

      Torque: 8.0 N*m (82 kgf*cm, 71 in.*lbf) 

  7. INSTALL AIR FUEL RATIO SENSOR 

    Refer to PROCEDURE - Step 1

  8. INSTALL FRONT EXHAUST PIPE ASSEMBLY 
    NOTE:

    When installing the water hose, ensure that the exhaust heat recirculation system is filled with coolant. Otherwise, the engine water pump assembly may be damaged.

    1. Using a vernier caliper, measure the free length of the compression springs.
      GTY144965Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002.
      Minimum (front) 41.5 mm (1.64 in.)
      Minimum (rear) 38.5 mm (1.52 in.)

      HINT: 

      If the free length is less than minimum, replace the compression spring.

    2. Fully insert 2 new gaskets to the exhaust manifold converter and front exhaust pipe assembly.
    3. Using a plastic hammer and wooden block, tap in each new gasket until its surface is flush with the exhaust manifold and front exhaust pipe assembly.
      GTY293831Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002.
      TEXT IN ILLUSTRATION

      *1 Exhaust Manifold and Front Exhaust Pipe Assembly
      *2 Gasket
      *3 Wooden Block
      NOTE:
      • Be careful with the installation direction of the gaskets.
      • Do not reuse the gaskets.
      • Do not damage the gaskets.
      • Do not push in the gaskets by using the exhaust pipe when connecting it.
    4. Connect the front exhaust pipe assembly to the 3 exhaust pipe supports.
    5. Install the front exhaust pipe assembly with the 2 compression springs and 2 bolts.

      Torque: 43 N*m (438 kgf*cm, 32 ft.*lbf) 

      HINT: 

      After installation, check that the gaps between the flanges of the exhaust manifold and front exhaust pipe assembly are consistent front-to-rear and left-to-right.

      GTY576230Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002.
      TEXT IN ILLUSTRATION

      *1 Exhaust Manifold
      *2 Front Exhaust Pipe Assembly
      *3 Gasket
      *a Space between flanges: 8.5 mm (0.335 in.)
    6. Install the front exhaust pipe assembly with the 2 compression springs and 2 bolts.

      Torque: 43 N*m (438 kgf*cm, 32 ft.*lbf) 

      HINT: 

      After installation, check that the gaps between the flanges of the tail exhaust pipe assembly and front exhaust pipe assembly are consistent front-to-rear and left-to-right.

      GTY319691Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002.
      TEXT IN ILLUSTRATION

      *1 Tail Exhaust Pipe Assembly
      *2 Front Exhaust Pipe Assembly
      *3 Gasket
      *a Space between flanges: 6.5 mm (0.256 in.)
    7. Connect the 2 heater water hoses.
  9. INSTALL EGR COOLER ASSEMBLY 

    (Refer to INSTALLATION [11/2015 - ]

  10. INSPECT FOR EXHAUST GAS LEAK