Installation [11/2015 - 12/2018]: Procedure

1. Using a vernier caliper, measure the free length of the 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 the minimum, replace the compression spring.

2. Temporarily install a new exhaust pipe gasket to the exhaust manifold (TWC: Front Catalyst).
3. Using a plastic hammer and wooden block, tap in the exhaust pipe gasket until its surface is flush with the exhaust manifold (TWC: Front Catalyst).

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   *1	Exhaust Manifold (TWC: Front Catalyst)
   *2	Exhaust Pipe Gasket
   *a	Wooden Block

   NOTE:

   • Be careful with the installation direction of the exhaust pipe gasket.
   • Do not reuse the exhaust pipe gasket.
   • Do not damage the exhaust pipe gasket.
   • Do not push in the exhaust pipe gasket by using the exhaust pipes when connecting them.
4. Connect the front exhaust pipe assembly (TWC: Rear Catalyst) to the 2 exhaust pipe supports.
5. Install the front exhaust pipe assembly (TWC: Rear Catalyst) to the exhaust manifold (TWC: Front Catalyst) with the 2 compression springs and 2 bolts.

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

   HINT: 

   After installation, check that the space between the flanges of the exhaust manifold (TWC: Front Catalyst) and front exhaust pipe assembly (TWC: Rear Catalyst) is consistent front-to-rear and left-to-right.

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   *1	Exhaust Manifold (TWC: Front Catalyst)
   *2	Front Exhaust Pipe Assembly (TWC: Rear Catalyst)
   *3	Exhaust Pipe Gasket
   *a	Space between Flanges: 8.5 mm (0.335 in.)

6. w/ Exhaust Heat Recirculation System:
   1. Connect the outlet heater water hose B and outlet heater water hose C to the No. 2 outlet water pipe and inlet water pipe and slide the 2 clips to secure them.
      NOTE:

      When installing the outlet heater water hose B and outlet heater water hose C, 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.

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   Standard Length	40 mm (1.57 in.)
   Minimum Free Length	38.5 mm (1.52 in.)

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

2. Temporarily install a new exhaust pipe gasket to the front exhaust pipe assembly (TWC: Rear Catalyst).
3. Using a plastic hammer and wooden block, tap in the exhaust pipe gasket until its surface is flush with the front exhaust pipe assembly (TWC: Rear Catalyst).

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   *1	Front Exhaust Pipe Assembly (TWC: Rear Catalyst)
   *2	Exhaust Pipe Gasket
   *a	Wooden Block

   NOTE:

   • Be careful with the installation direction of the exhaust pipe gasket.
   • Do not reuse the exhaust pipe gasket.
   • Do not damage the exhaust pipe gasket.
   • Do not push in the exhaust pipe gasket by using the exhaust pipes when connecting them.
4. Connect the tail exhaust pipe assembly to the 4 exhaust pipe supports.
5. Install the tail exhaust pipe assembly to the front exhaust pipe assembly (TWC: Rear Catalyst) 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 tail exhaust pipe assembly and front exhaust pipe assembly (TWC: Rear Catalyst) is consistent front-to-rear and left-to-right.

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   *1	Front Exhaust Pipe Assembly (TWC: Rear Catalyst)
   *2	Tail Exhaust Pipe Assembly
   *3	Exhaust Pipe Gasket
   *a	Space between Flanges: 6.5 mm (0.256 in.)

Refer to INSTALLATION [11/2015 -]

Refer to PROCEDURE - Step 3 [11/2015 - 08/2016] , or refer to PROCEDURE - Step 3 [08/2016 - 07/2020]

Refer to PROCEDURE - Step 4 [11/2015 - 08/2016] , or refer to PROCEDURE - Step 4 [08/2016 - 07/2020]

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 [11/2015 -]

1. Install the 2 front center floor braces to the vehicle body with the 8 bolts.

   Torque: 29 N*m (296 kgf*cm, 21 ft.*lbf) 

See step  11

See step  12

Refer to PROCEDURE - Step 5