Disassembly and Assembly

EXHAUST MANIFOLD AND THREE WAY CATALYST


Disassembly and Assembly


DISASSEMBLY
1. Remove heated oxygen sensor 2.

CAUTION:
Heated oxygen sensor 2 is not reusable. Never remove heated oxygen sensor 2 unless this is required.





- Using the heated oxygen sensor wrench [SST: KV10114400
(J-38365)] (A), remove heated oxygen sensor 2 (1).

NOTE:
- The heated oxygen sensor 2 is removable under vehicle-mounted condition.
- The figure shows an example of bank 1.
2. Remove three way catalyst (bank 1 and bank 2).
3. Remove air fuel ratio sensor 1as per the following:

CAUTION:
Air fuel ratio sensor 1 is not reusable. Never remove air fuel ratio sensor 1 unless this is required.
- Using the heated oxygen sensor wrench [SST: KV10114400 (J-38365)], remove air fuel ratio sensor 1.

NOTE:
The air fuel ration sensor 1 is removable under vehicle-mounted condition.
4. Remove exhaust manifold.





- Loosen nuts in the reverse order of figure to remove exhaust manifold with power tool.

A : Bank 1
B : Bank 2
White arrow : Engine front

NOTE:
Disregard No. 9 to No. 12 when loosening.
5. Remove exhaust manifold gaskets.

CAUTION:
Cover engine openings to avoid entry of foreign materials.

ASSEMBLY
Note the following item, and install in the reverse order of removal.

Exhaust Manifold Gasket





- Install exhaust manifold gasket in directional shown in the figure.

A : Triangle press
White arrow : Above

Exhaust Manifold





- Tighten mounting nuts in numerical order as shown in the figure.

A : Bank 1
B : Bank 2
White arrow : Engine front

NOTE:
Tighten mounting nuts No. 1 to 4 in two steps. The numerical order
No. 9 to 12 shown second steps.

Air Fuel Ratio Sensor 1, Heated Oxygen Sensor 2

CAUTION:
- Before installing a new sensors, clean exhaust system threads using oxygen sensor thread cleaner
(commercial service tool: J-43897-18 or J-43897-12), and apply anti-seize lubricant (commercial service tool).
- Sensors are not reusable. Replace them with a new one after removal. When replacing them, handle with care not to impact on them.





- When installing the new sensors, set the heated oxygen sensor wrench [SST: KV10114400(J-38365)] (A) in the hexagonal part to tighten the them.

1 : Heated oxygen sensor 2 (bank 1)

- Never over torque sensors. Doing so may cause damage to the sensors, resulting in "MIL" coming on.