Primary Catalytic Converter, Removing And Installing: Removal

-- On a vehicle with air suspension, activate vehicle lift mode. Refer to VEHICLE LIFT MODE .

-- Remove the noise insulation -1- and -2-. Refer to Exterior Equipment .

Fig 1: Locating Front/Rear Noise Insulation

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-- Drain the coolant. Refer to COOLANT, DRAINING AND FILLING .

-- Remove the bolts -arrows- and the noise insulation bracket.

Fig 2: Identifying Bracket For Noise Insulation

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-- Remove the particulate filter. Refer to PARTICULATE FILTER, REMOVING AND INSTALLING .

-- Remove the Heated Oxygen Sensor -G39-. Refer to Diesel Fuel Injection .

-- Remove the bolts -1- and -2- and then remove the heat shield from the turbocharger.

Fig 3: Turbocharger Heat Shield And Bolts

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-- Remove the nuts -arrows-.

Fig 4: Locating Front Exhaust Pipe To Catalytic Converter Flange Nuts

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-- Remove the sensor accessible from above:

Fig 5: Locating Primary Catalytic Converter And Sensors, Catalyst Temperature Sensor 1 -G20- (2), EGT 3 -G495- (1), EGT 2 -G448- (3) & NOx Sensor -G295- (4)

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2 - For Catalyst Temperature Sensor 1 -G20- - Only Engines Meeting Emissions Standard BIN 5

3 - Exhaust Gas Temperature Sensor 2 -G448- - Only Engines Meeting Emissions Standard BIN 5

4 - NOx Sensor -G295-

-- Remove the Exhaust Gas Temperature Sensor 3 -G495- -1- accessible from underneath.

-- Remove the bolt -1-.

Fig 6: Identifying Bolt -1-, Clamp -Arrow- And Left Rear Coolant Pipe

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-- Remove the left rear coolant pipe from the exhaust gas recirculation auxiliary cooler.

-- Remove the heat shield -A- from the steering gear.

Fig 7: Steering Gear Heat Shield -A-

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-- Remove the bolt -B- for the universal joint. .

-- Remove universal joint from steering gear.

-- Remove the bolt -arrow- from the tab on the preliminary catalytic converter.

Fig 8: Locating Preliminary Catalytic Converter Tab And Bolt -Arrow-

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Fig 9: Identifying Bolts -4- And Engine Carrier Bolts -3-

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-- Remove the bolts -2- to be able to lower the rear subframe.

-- Remove the primary catalytic converter toward the rear.