Installation [11/2016 - ]: Procedure

1. Clean the installation surfaces and bolt holes of the exhaust pipe gas control actuator sub-assembly and center exhaust pipe assembly (TWC: Rear Catalyst).

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2. Apply clean engine coolant to the O-ring.

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   *1	Exhaust By-pass Pipe
   *2	O-ring

3. Install the exhaust by-pass pipe to the exhaust pipe gas control actuator sub-assembly.
   NOTE:

   • When reusing the exhaust by-pass pipe, inspect the O-ring.
   • If the O-ring has scratches or cuts, replace the exhaust by-pass pipe.
   • Make sure that the O-ring and the fitting section of the exhaust pipe gas control actuator sub-assembly are free of oil or foreign matter.
   • Do not touch the O-ring or fitting section of the exhaust pipe gas control actuator sub-assembly.
4. Set the exhaust pipe gas control actuator sub-assembly and exhaust by-pass pipe in place and confirm that the hook of the exhaust pipe gas control actuator sub-assembly is engaged with the valve pin.

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   *a	Hook
   *b	Valve Pin

5. Loosely install the 3 bolts several threads.

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6. Install the exhaust by-pass pipe with the 2 bolts.

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   Torque: 8.5 N*m (87 kgf*cm, 75 in.*lbf) 

7. Confirm the valve plate is positioned correctly by pressing the valve plate.

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   *a	Valve Plate
   *b	Insertion direction

   HINT: 

   If the valve plate is not positioned correctly, the final exhaust pipe gas control actuator sub-assembly position may be difficult to achieve.

8. Tighten the 3 bolts in the order shown in the illustration in several steps.

   Torque: 5.0 N*m (51 kgf*cm, 44 in.*lbf) 

   Fig 1: Tightening Sequence Of Exhaust Pipe Gas Control Actuator Sub-Assembly

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9. Adjust the installation position of the exhaust by-pass pipe.
   1. Loosen the 2 bolts slightly.
      NOTE:

      Do not remove these 2 bolts.

   2. Move the exhaust by-pass pipe up and down to properly settle the O-ring.

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      *1	Exhaust Pipe Gas Control Actuator Sub-assembly
      *2	O-ring
      *3	Exhaust By-pass Pipe
      *a	OK (O-ring is not deformed.)
      *b	NG (O-ring is deformed.)

      NOTE:

      Make sure to settle the O-ring to distribute the pressure applied to the upper part of the O-ring. Failure to do so may cause engine coolant to leak.

   3. Tighten the 2 bolts.

      Torque: 8.5 N*m (87 kgf*cm, 75 in.*lbf) 

10. When replacing the exhaust pipe gas control actuator sub-assembly with a new one:
    1. Remove the spacer from a new exhaust pipe gas control actuator sub-assembly.

       Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

       *a

       Spacer

       HINT: 

       The spacer is provided with a new exhaust pipe gas control actuator sub-assembly.

Refer to PROCEDURE - Step 5

Refer to PROCEDURE - Step 6

Refer to PROCEDURE - Step 7

See step  2

Refer to PROCEDURE - Step 1