Exhaust Manifold Removal and Installation

Exhaust Manifold Removal and Installation (J24B)

Removal

WARNING:
To avoid getting burned, do not work on exhaust system when it is hot. Exhaust system must be completely cool before beginning any service on it.

CAUTION:
Exhaust manifold has three-way catalytic converter which reduce harmful exhaust emissions.
Be careful not to drop exhaust manifold. If it is dropped, inside catalytic converter may be damages on impact.

1) Disconnect negative (-) cable from battery.
2) Remove exhaust manifold cover.
3) Disconnect A/F sensor connector (1) and HO2S connector (2), and then detach them from their brackets.





4) Remove exhaust pipe No.1 (1).





5) Remove oil level gauge and oil level gauge guide (1).
6) Remove exhaust manifold (2) and its gasket from cylinder head.





7) Remove A/F sensor and HO2S if necessary.

Installation
Reverse removal procedure noting the following.
^ Use new gaskets and new seal rings.
^ Install A/F sensor and HO2S.
^ Use new O-ring (2) for oil level gauge guide (1) and apply engine oil to it when installing oil level gauge guide to oil pan (3).





^ Tighten oil level gauge guide bolt (1) to specified torque.
Tightening torque
Oil level gauge guide bolt (a): 11 Nm (1.1 kg-m, 8.5 ft. lbs.) (for J24B)





^ Run engine and check for exhaust leaks.