QX56 V8-5.6L (VK56DE) (2004)
Catalytic Converter: Service and Repair
EXHAUST MANIFOLD AND THREE WAY CATALYST
REMOVAL
WARNING: Perform the work when the exhaust and cooling system have cooled sufficiently.
1. Remove air duct and resonator assembly (inlet).
2. Drain engine coolant from the radiator.
3. Remove engine undercover with power tool.
4. Remove the radiator and radiator hoses.
5. Remove 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 sensors.
a. Remove engine room cover with powertool.
b. Remove harness connector of each air fuel ratio A/F sensors, 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: KV101 14400 (J-38356)
CAUTION:
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Be careful not to damage the air fuel ratio A/F sensors
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Discard any air fuel ratio A/F sensor which has been dropped from a height of more than 0.5 m (19.7 inch) onto a hard surface such as