Installation [11/2016 - ]: Procedure

Refer to PROCEDURE - Step 1

1. Install a new gasket to the front exhaust pipe assembly.
2. Install the front exhaust pipe assembly to the exhaust manifold assembly LH (TWC: Front Catalyst) with the 2 nuts.

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

3. Connect the heated oxygen sensor (for Bank 2) connector.
4. Engage the 2 wire harnesses clamps.

1. Install the No. 1 exhaust pipe support bracket (for Lower Side) with the 2 bolts.

   Torque: 21 N*m (214 kgf*cm, 15 ft.*lbf) 

HINT: 

Perform "Inspection After Repairs" after replacing the heated oxygen sensor.

Refer to INITIALIZATION [11/2016 - ]

1. Using SST, install the heated oxygen sensor (for Bank 1) to the front No. 3 exhaust pipe sub-assembly.

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   *a	Torque Wrench Fulcrum Length

   • SST: 09224-00012 

   Specified tightening torque 

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

   NOTE:

   If the heated oxygen sensor has been struck or dropped, replace it.

   HINT: 

   • Calculate the torque wrench reading when changing the fulcrum length of the torque wrench.

     Refer to PRECAUTION [11/2016 - ]

   • When using SST (fulcrum length of 30 mm (1.18 in.)) + torque wrench (fulcrum length of 180 mm (7.09 in.)):

     37.7 N*m (384 kgf*cm, 28 ft.*lbf)

2. Install the wire harness clamp bracket to the heated oxygen sensor (for Bank 1).

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   *1	Wire Harness Clamp Bracket
   *a	Left of Vehicle
   *b	180°

   HINT: 

   Make sure the direction of the wire harness clamp bracket is as shown in the illustration.

1. Install 2 new gaskets to the front No. 3 exhaust pipe sub-assembly.
2. Install the front No. 3 exhaust pipe sub-assembly to the front exhaust pipe assembly and exhaust manifold (TWC: Front Catalyst) with the 2 bolts and 2 nuts.

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

3. Connect the heated oxygen sensor (for Bank 1) connector.
4. Engage the 3 wire harness clamps.

1. Using a vernier caliper, measure the free length of the 2 compression springs.

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   Standard Length	43.0 mm (1.69 in.)
   Minimum Free Length	41.5 mm (1.63 in.)

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

2. Temporarily install a new gasket to the front No. 3 exhaust pipe sub-assembly.
3. Using a plastic hammer and wooden block, tap in the gasket until its surface is flush with the front No. 3 exhaust pipe sub-assembly.

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   *1	Front No. 3 Exhaust Pipe Sub-assembly
   *2	Gasket
   *a	Wooden Block

   NOTE:

   • Be careful with the installation direction of the gasket.
   • Do not reuse the gasket.
   • Do not damage the gasket.
   • Do not push in the gasket by using the exhaust pipes when connecting them.
4. Connect the center exhaust pipe assembly (TWC: Rear Catalyst) to the exhaust pipe support.
5. Install the center exhaust pipe assembly (TWC: Rear Catalyst) to the front No. 3 exhaust pipe sub-assembly with the 2 bolts and 2 compression springs.

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

   HINT: 

   After installation, check that the space between the flanges of the center exhaust pipe assembly (TWC: Rear Catalyst) and front No. 3 exhaust pipe sub-assembly is consistent front-to-rear and left-to-right.

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   *1	Center Exhaust Pipe Assembly (TWC: Rear Catalyst)
   *2	Front No. 3 Exhaust Pipe Sub-assembly
   *3	Gasket
   *a	Space between Flanges: 8.5 mm (0.335 in.)

1. Install the No. 3 exhaust pipe damper to the tail exhaust pipe assembly with the 2 bolts.

   Torque: 19 N*m (194 kgf*cm, 14 ft.*lbf) 

1. Install a new gasket to the center exhaust pipe assembly (TWC: Rear Catalyst).
2. Connect the tail exhaust pipe assembly to the 4 exhaust pipe supports.
3. Install the tail exhaust pipe assembly to the center exhaust pipe assembly (TWC: Rear Catalyst) with the 2 bolts.

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

If gas is leaking, tighten the areas necessary to stop the leak. Replace damaged parts as necessary.

1. Perform Inspection After Repair after repairing an exhaust gas leak.

   Refer to INITIALIZATION [11/2016 - ]

See step  14

Refer to PROCEDURE - Step 102

Refer to PROCEDURE - Step 103