Pre-Catalytic Converter, Removing And Installing: Removing

Fig 1: Identifying Front/Rear Noise Insulation

Courtesy of VOLKSWAGEN GROUP OF AMERICA, INC.

-- Remove the noise insulation -1 and 2-. Refer to OVERVIEW - NOISE INSULATION .

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

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

Fig 2: Identifying Bracket For Noise Insulation

Courtesy of VOLKSWAGEN GROUP OF AMERICA, INC.

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

-- Remove the Oxygen Sensor 1 before Catalytic Converter -GX10-.

• Vehicles with engine code CATA. Refer to Oxygen Sensor 1 before Catalytic Converter -GX10-, REMOVING AND INSTALLING .
• Vehicles with engine codes CASA and CASD. Refer to Oxygen Sensor 1 before Catalytic Converter -GX10-, REMOVING AND INSTALLING, ENGINE CODES CASA, CASD .

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

Fig 3: Identifying Bolts -1 To 2- And Turbocharger Heat Shield

Courtesy of VOLKSWAGEN GROUP OF AMERICA, INC.

-- Remove the nuts -arrows-.

Fig 4: Identifying Front Exhaust Pipe With Catalytic Converter Nuts

Courtesy of VOLKSWAGEN GROUP OF AMERICA, INC.

-- Remove the sensor accessible from above:

Fig 5: Identifying Installation Location Inside Exhaust System Tract

Courtesy of VOLKSWAGEN GROUP OF AMERICA, INC.

2 -  Catalyst Temperature Sensor 1 -G20- - only for engine code CATA

3 -  Exhaust Gas Temperature Sensor 2 -G448- - only for engine code CATA

4 -  NOx Sensor -G295-

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

-- Remove the bolt -1-.

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

Courtesy of VOLKSWAGEN GROUP OF AMERICA, INC.

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

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

Fig 7: Identifying Steering Gear Heat Shield -A-

Courtesy of VOLKSWAGEN GROUP OF AMERICA, INC.

-- Remove the universal joint bolt -B-.

-- Remove universal joint from steering gear.

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

Fig 8: Identifying Bolt -Arrow- From Exhaust Pipe

Courtesy of VOLKSWAGEN GROUP OF AMERICA, INC.

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

Courtesy of VOLKSWAGEN GROUP OF AMERICA, INC.

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

-- Remove the pre-catalytic converter toward the rear.