QX56 AWD V8-5.6L (VK56DE) (2005)
Exhaust Manifold: Service and Repair
EXHAUST MANIFOLD AND THREE WAY CATALYST
Removal and Installation
REMOVAL
WARNING: Perform the work when the exhaust and cooling system have cooled sufficiently.
1. Remove the air duct and resonator assembly.
2. Drain the engine coolant from the radiator. Refer to "DRAINING ENGINE COOLANT".
3. Remove the engine undercover using power tool.
4. Remove the radiator and radiator hoses. Refer to "RADIATOR".
5. Remove the drive belts.
6. Remove the air fuel ratio A/F sensors (right bank, left bank).
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Follow steps to remove each air fuel ratio A/F sensor.
a. Remove the engine room cover using power tool.
b. Remove the harness connector of each air fuel ratio A/F sensor, and harness from bracket and middle clamp.
c. Remove the air fuel ratio A/F sensors from both left and right exhaust manifolds using Tool.
Tool number : - (J-44626)
CAUTION:
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Be careful not to damage the air fuel ratio A/F sensors