Left Front Exhaust Pipe With Catalytic Converter, Removing and Installing (Vehicles With Automatic Transmission 01V)

Left Front Exhaust Pipe With Catalytic Converter, Removing And Installing (Vehicles With Automatic Transmission 01V)

Special tools and equipment







- 3337 Wrench, 7-piece set







- VAG1383A Engine/transmission hoist
- Locking compound G 052 112 A3

Removing







- Remove rear engine cover (arrows).







- Remove cover -1- in engine compartment (right side).







- Remove bolts for holding plate -3- for solenoid valves (arrows).
- Disconnect intake air duct -1- at Mass Air Flow (MAF) sensor.
- Remove hose -4- for crankcase ventilation from air duct -2-.







- Remove bolt (arrow) and disconnect air duct -2- at throttle valve control module.
- Disconnect hose -1- from air duct.

NOTE: Illustration shows the air guide from rear with the engine removed.







- Remove cover -1- in engine compartment (left side).







- Remove coolant reservoir (arrow)
- Disconnect electrical wiring to Engine Coolant Level (ECL) warning switch -F66- at bottom of coolant reservoir.
- Tie coolant reservoir with connected coolant hoses -1 to 3- to side.







- Disconnect vacuum hose to brake booster (arrows).
- Remove heat shield for harness connectors at left of bulkhead, if installed.







- Remove harness connectors -1 to 4- from bracket at left of bulkhead.
- Disconnect electrical harness connectors -1- and -4-.
- Move wires to oxygen sensors clear.







- Unscrew oxygen sensor behind catalytic converter (arrow) using special tool 3337/7.

NOTE: Illustration is shown with engine removed.







- Remove nut -2- for exhaust pipe/exhaust manifold which is accessible from top.

NOTE: Illustration is shown with engine removed.

- Remove left front wheel.







- For vehicles with auxiliary heater, remove bolts (arrows) for exhaust pipe of auxiliary heater on sound insulation.







- Remove bolts or release quick-release screws -1- and -2- and remove front sound insulation.
- Remove quick-release screws -3- and remove rear sound insulation, if present.







- Remove bolts -1- through -4- and remove crossmember.

NOTE: Flex joint in front exhaust pipe must not be bent more than 10 degrees, otherwise it may be damaged..







- Disconnect exhaust system at both double clamps (arrows).
- Remove heat shield above exhaust system.







- Remove heat shield for driveshaft from cover for Torsen differential (arrows).
- Remove bolts at flange of transmission/driveshaft.
- Push driveshaft to rear final drive together. Constant velocity joints can be adjusted axially.
- Rest driveshaft on exhaust system.







- Position engine/transmission jack VAG1383A directly behind ATF drip tray. Insert a wood block -1- to protect transmission housing.

WARNING: The lock carrier must be installed.







- Remove bolts -2- and -3- and then mounting bolts -1- and -4- of subframe.
- Lower transmission and subframe slightly using VAG1383A engine/transmission jack.







- Remove bolts 1 to 4 for transmission mount.
- Unbolt both transmission mounts -5- and -6- at transmission housing and remove transmission supports with transmission mounts.
- Lower transmission slowly.







- Remove heat shield -1- for left drive axle.







- Remove bracket for front exhaust pipe (arrow).







- Remove nuts -1- and -3- for front exhaust pipe/exhaust manifold which are accessible from bottom.

NOTE: Illustration is shown with engine removed.

- Remove front exhaust pipe with catalytic converter.

Installing
- Installation is reverse of removal, noting the following:

NOTE:
- All cable ties opened or cut during engine removal must be reinstalled at the same locations during installation.
- Oxygen sensor threads are coated with an assembly paste. This paste must not contact sensor openings.
- Oxygen sensor wiring must always be secured in the same position when installing so that contact with the exhaust pipe is avoided.
- Replace gaskets and self-locking nuts.

- Install transmission supports.
- Install subframe.
- Installing driveshaft.
- Install exhaust system free of stress.

NOTE: Individual mounting components for exhaust system to transmission on vehicles with automatic transmission 01 V, see fig. 5.


Tightening torques

Component Nm
Front exhaust pipe with catalytic converter to
exhaust manifold 27
Front exhaust pipe with catalytic converter to
hanging strap 25
Mounting straps to transmission 25
Drive axle protection to transmission 23
Oxygen sensor to catalytic converter 55