Exhaust Pipe And Catalytic Converter: Installation

INSTALL AIR FUEL RATIO SENSOR (Bank 1 Sensor 1) (See INSTALLATION )
INSTALL AIR FUEL RATIO SENSOR (Bank 2 Sensor 1) (See INSTALLATION )
INSTALL NO. 2 HEATED OXYGEN SENSOR (Bank 1 Sensor 2) (See INSTALLATION )
INSTALL HEATED OXYGEN SENSOR (Bank 2 Sensor 2) (See INSTALLATION )
INSTALL FRONT EXHAUST PIPE ASSEMBLY
1. Install a new gasket and the front exhaust pipe to the exhaust manifold RH with 3 new nuts.
  Torque: 54 N*m (554 kgf*cm, 40 ft.*lbf)
2. Connect the air fuel ratio sensor connector.
3. Connect the heated oxygen sensor connector.
4. Attach the heated oxygen sensor wire harness clamp.
INSTALL FRONT NO. 2 EXHAUST PIPE ASSEMBLY
1. Install a new gasket and the front No. 2 exhaust pipe to the exhaust manifold LH with 3 new nuts.
  Torque: 54 N*m (554 kgf*cm, 40 ft.*lbf)
2. Connect the air fuel ratio sensor connector.
3. Connect the heated oxygen sensor connector.
INSTALL CENTER EXHAUST PIPE ASSEMBLY
1. Check the free length.
  1. Using a vernier caliper, measure the free length of the compression spring.
    Minimum free length:
    
    43 mm (1.693 in.)
    
    If the free length is less than the minimum, replace the compression spring.
2. Install 2 new gaskets to the front exhaust pipe and front No. 2 exhaust pipe.
3. Install the center exhaust pipe to the 3 exhaust pipe supports, and then install the 4 bolts and 2 compression springs.
  
  Fig 1: Measuring Free Length Of Compression Spring
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  
  Torque: for front exhaust pipe
  
  43 N*m (438 kgf*cm, 32 ft.*lbf)
  
  for front No. 2 exhaust pipe
  
  48 N*m (489 kgf*cm, 35 ft.*lbf)
INSTALL EXHAUST PIPE DAMPER
1. Install the exhaust pipe damper to the tailpipe with the 2 bolts.
  Torque: 19 N*m (194 kgf*cm, 14 ft.*lbf)
  
  Fig 2: Locating Exhaust Pipe Damper Bolts
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
INSTALL TAILPIPE ASSEMBLY
1. Install the tailpipe to the 2 exhaust pipe supports.
2. Install a new gasket to the center exhaust pipe.
3. Connect the tailpipe to the center exhaust pipe.
4. Attach a new clamp to the tailpipe and center exhaust pipe. Then install the bolt to the clamp.
  Torque: 32 N*m (326 kgf*cm, 24 ft.*lbf)
  
  HINT:
  
  Install the clamp within the angle range shown in the illustration below.
INSPECT FOR EXHAUST GAS LEAK (See INSTALLATION )
INSTALL NO. 2 ENGINE UNDER COVER (See INSTALLATION )