9. Remove the EGR inlet tube mounting bolt, exhaust manifold and three way catalyst side. Refer to Removal and Installation.
10. Remove the exhaust manifold and three way catalyst cover.
11. Loosen the exhaust manifold and three way catalyst nuts in the reverse order as shown.
12. Remove the exhaust manifold and three way catalyst assembly and gasket.
INSTALLATION
Exhaust Manifold and Three Way Catalyst
1. Install studs in cylinder head and exhaust manifold and three way catalyst if removed. Then tighten to specification.
caution
Do not reuse stud bolts.
2. Install the exhaust manifold and three way catalyst and gasket. Then tighten the nuts to specification in the numerical order shown.
: 41.65 N·m (4.2 kg-m, 31 ft-lb)
caution
Do not reuse gasket.
Do not reuse nuts.
3. Then tighten the nuts to specification in the numerical order shown again.
: 41.65 N·m (4.2 kg-m, 31 ft-lb)
4. Install exhaust manifold and three way catalyst cover and bolts.
caution
Do not reuse bolts.
5. Install the air fuel ratio sensor 1 using heated oxygen sensor wrench [SST: KV10117100] if removed and tighten to specification.
caution
Be careful not to damage air fuel ratio sensor 1.
Discard any air fuel ratio sensor which has been dropped from a height of more than 0.5 m (19.7 in) onto a hard surface such as a concrete floor; replace with a new one.
Do not over-tighten the air fuel ratio sensor 1. Doing so may cause damage to the air fuel ratio sensor 1, resulting in a malfunction and the MIL coming on.