Removal And Installation (Exhaust Manifolds)

EXHAUST MANIFOLD AND THREE WAY CATALYST


Removal and Installation


REMOVAL (LH)

WARNING:
Perform the work when the exhaust and cooling system have cooled sufficiently.
1. Remove engine room cover. Service and Repair.
2. Remove air cleaner case (upper) and air duct and resonator assembly. .
3. Remove engine under cover. Service and Repair.
4. Partially drain engine coolant. Service and Repair.
5. Remove three way catalyst (LH). Removal And Installation (Three Way Catalyst)
6. Remove exhaust manifold cover (LH).
7. Remove oil level gauge and oil level gauge guide. .
8. Disconnect water hoses at heater pipe.
9. Remove heater pipe from cylinder head (LH).





10. Loosen nuts in reverse order as shown.
- Arrow indicates: Front

NOTE:
Disregard the numerical order No. 7 and 8 in removal.
11. Remove exhaust manifold (LH).
12. Remove gaskets.

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

INSPECTION AFTER REMOVAL

Surface Distortion





- Check the surface distortion of the exhaust manifold mating surface with straightedge and feeler gauge.

Limit : 0.3 mm (0.012 in)

- If it exceeds the limit, replace exhaust manifold.

INSTALLATION (LH)
Installation is in the reverse order of removal.

Exhaust Manifold Gasket





Install the exhaust manifold gasket in direction as shown.
- Arrow indicates: Front
- A: Identification hole

Exhaust Manifold
- If exhaust manifold studs were removed, install them and tighten to specification.





- Install exhaust manifold and tighten nuts in numerical order as shown.

CAUTION:
Use new exhaust manifold nuts for installation.

NOTE:
Tighten nuts No. 1 and 2 in two steps. The numerical order No. 7 and 8 show second step.
- Arrow indicates: Front

REMOVAL (RH)
1. Remove three way catalyst (RH). Removal And Installation (Three Way Catalyst)
2. Remove heat shield from lower dash panel.
3. Remove support bolts from A/T fluid charging pipe (A/T models).





4. Loosen nuts in reverse order as shown.
- Arrow indicates: Front

NOTE:
Disregard the numerical order No. 7 and 8 in removal.
5. Remove exhaust manifold (RH) and exhaust manifold cover (RH) together.
6. Remove gaskets.

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

INSPECTION AFTER REMOVAL

Surface Distortion





- Check the surface distortion of the exhaust manifold mating surface with straightedge and feeler gauge.

Limit : 0.3 mm (0.012 in)

- If it exceeds the limit, replace exhaust manifold.

INSTALLATION (RH)
Installation is in the reverse order of removal.

NOTE:
If necessary, a crowfoot may be used to tighten the exhaust manifold nuts.

Exhaust Manifold Gasket





Install the exhaust manifold gaskets in direction as shown.
- Arrow indicates: Front
- A: Identification hole

Exhaust Manifold
- If exhaust manifold studs were removed, install them and tighten to specification.





- Install exhaust manifold and tighten nuts in numerical order as shown.

CAUTION:
Use new exhaust manifold nuts for installation.

NOTE:
Tighten nuts No. 1 and 2 in two steps. The numerical order No. 7 and 8 show second step.
- Arrow indicates: Front