Exhaust Manifold: Service and Repair
EXHAUST MANIFOLDCOMPONENTS:
REMOVAL
1. REMOVE ENGINE ASSEMBLY
(a) Remove the engine from the vehicle.
2. REMOVE HEATED OXYGEN SENSOR (for Bank 1)
(a) Using SST, remove the sensor.
SST 09224-00010
3. REMOVE HEATED OXYGEN SENSOR (for Bank 2)
(a) Using SST, remove the sensor.
SST 09224-00010
4. REMOVE NO. 2 EXHAUST MANIFOLD HEAT INSULATOR (for Bank 1)
(a) Remove the 4 bolts and insulator.
5. REMOVE NO. 1 EXHAUST MANIFOLD HEAT INSULATOR (for Bank 2)
(a) Remove the 4 bolts and insulator.
6. REMOVE EXHAUST MANIFOLD SUB-ASSEMBLY (for Bank 1)
(a) Remove the 8 nuts, manifold and gasket.
7. REMOVE EXHAUST MANIFOLD SUB-ASSEMBLY (for Bank 2)
(a) Remove the 8 nuts, manifold and gasket.
INSPECTION
1. INSPECT EXHAUST MANIFOLD SUB-ASSEMBLY (for Bank 2)
(a) Using a precision straightedge and feeler gauge, measure the exhaust manifold's cylinder head contact surface for warpage.
Maximum warpage: 0.50 mm (0.0197 in.)
If the warpage is greater than the maximum, replace the manifold.
2. INSPECT EXHAUST MANIFOLD SUB-ASSEMBLY (for Bank 1)
HINT: Use the same procedures described for the bank 2 side.
INSTALLATION
1. INSTALL EXHAUST MANIFOLD SUB-ASSEMBLY (for Bank 1)
(a) Place a new gasket on the cylinder head with the white mark facing the manifold side.
NOTICE: Be careful of the installation direction.
(b) Install the exhaust manifold with the 8 nuts. Uniformly tighten the nuts in several passes.
Torque: 44 N*m (449 kgf*cm, 32 ft.*lbf)
2. INSTALL EXHAUST MANIFOLD SUB-ASSEMBLY (for Bank 2)
HINT: Use the same procedures described for the bank 1 side.
3. INSTALL NO. 2 EXHAUST MANIFOLD HEAT INSULATOR (for Bank 1)
(a) Install the insulator with the 4 bolts.
Torque: 7.5 N*m (76 kgf*cm, 66 in.*lbf)
4. INSTALL NO. 1 EXHAUST MANIFOLD HEAT INSULATOR (for Bank 2)
(a) Install the insulator with the 4 bolts.
Torque: 7.5 N*m (76 kgf*cm, 66 in.*lbf)
5. INSTALL HEATED OXYGEN SENSOR (for Bank 1)
(a) Using SST, install the oxygen sensor.
SST 09224-00010
Torque: 40 N*m (408 kgf*cm, 30 ft.*lbf) for use with SST 44 N*m (449 kgf*cm, 32 ft.*lbf) for use without SST
6. INSTALL HEATED OXYGEN SENSOR (for Bank 2)
(a) Using SST, install the oxygen sensor.
SST 09224-00010
Torque: 40 N*m (408 kgf*cm, 30 ft.*lbf) for use with SST 44 N*m (449 kgf*cm, 32 ft.*lbf) for use without SST
7. INSTALL ENGINE ASSEMBLY
(a) Install the engine to the vehicle.