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Rear Axle, Removing And Installing, Fwd Vehicles

Special tools and workshop equipment required 

Removing the Subframe and Its Attachments

-- Before starting the procedure, measure the distance from the center of the wheel to the lower edge of the wheel housing. Refer to WHEEL BEARING IN CURB WEIGHT POSITION, LIFTING VEHICLES WITH COIL SPRING .

-- Remove the rear wheels. Refer to WHEELS AND TIRES .

-- Disconnect the left and right connector -1- from the ABS speed sensor and free up the wire.

GWWA42-10538Courtesy of AUDI OF AMERICA, LLC

-- Disconnect the right and left electromechanical parking brake connector -2- from the brake caliper.

-- Remove and free up the wiring harness from the retainers -arrows-.

Applies to Vehicles with a Level Control System Sensor

GWWA43-10206Courtesy of AUDI OF AMERICA, LLC

-- Disconnect the connector -2- from the left rear level control system sensor -1- and, if necessary, from the right sensor.

-- To avoid damaging the level control system sensor, remove the bolts -lower arrows- from the linkage for the level control system sensor.

-- Free up the level control system sensor wire on the subframe.

Applies to All

-- Remove the springs. Refer to SPRING, REMOVING AND INSTALLING .

-- Remove the left and right nut -1- and remove the bolt -2-.

GWWA42-10661Courtesy of AUDI OF AMERICA, LLC

-- Unclip the breather lines -1, 2 and arrows-.

GWWA42-10767Courtesy of AUDI OF AMERICA, LLC

-- Unclip the brake lines from both sides -arrows-.

GWWA42-10591Courtesy of AUDI OF AMERICA, LLC
NOTE:

The clips will get damaged while doing this and will have to be replaced.

For better illustration, the subframe is shown from above and is removed.

-- Remove the clamps -1- on both sides of the vehicle.

GWWA42-10581Courtesy of AUDI OF AMERICA, LLC

-- Free up the brake lines from the bracket.

NOTE:

Do not disconnect the brake line.

-- Remove the left and right brake caliper. Refer to BRAKE CALIPER, REMOVING AND INSTALLING, REAR BRAKES .

-- Remove the muffler. Refer to OVERVIEW - MUFFLER .

-- Remove the underbody trim panels. Refer to OVERVIEW - UNDERBODY TRIM PANELS .

-- Unclip and free up the wire -2- on the bracket -1-.

Fig 1: Tighten The Bolts -arrows-
GWWA42-10651Courtesy of AUDI OF AMERICA, LLC

-- Mark the mounting bracket installation location on the body.

-- Remove the bolts -arrows-.

Applies to Audi TT Roadster

GWWA42-10770Courtesy of AUDI OF AMERICA, LLC

-- Remove the nut -3- for the diffuser -1- on the fuel tank.

NOTE:

Ignore item -2-.

-- Remove the rear diagonal braces. Refer to DIAGONAL BRACES, REMOVING AND INSTALLING .

Applies to All

-- Secure the subframe. Refer to SUBFRAME, SECURING .

-- Lower the subframe with attachments.

NOTE:

When lowering, ensure the brake lines and wires have sufficient clearance.

Subframe with Attachments, Installing

Install in reverse order of removal and note the following:

-- Tighten the threaded connections in the curb weight position. Refer to WHEEL BEARING IN CURB WEIGHT POSITION, LIFTING VEHICLES WITH COIL SPRING .

On vehicles with electronic damping (Audi magnetic ride), perform the "Readapt control position" function using the Vehicle Diagnostic Tester.

-- Connect the Vehicle Diagnostic Tester.

-- Select Diagnostic  operating mode and Start diagnostics  .

-- Select the Select individual test  tab and select the following tree structure consecutively:

-- Evaluate if an axle alignment is needed. Refer to NEED FOR AXLE ALIGNMENT, EVALUATING .

Tightening Specifications 

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