SUBFRAME, Securing

WARNING: This page is about a different car, the 2022 Audi S3, 2022 Audi RS 3, 2022 Audi A3 Quattro, and 2022 Audi A3. However, it is still accessible from the selected car via links, so may be relevant.

Special tools and workshop equipment required

Engine and Gearbox Jack: VAS6931

Fig 1: Engine and Gearbox Jack VAS6931 or VAG1383A
Courtesy of AUDI OF AMERICA, LLC
Locating Pins: T10096

Fig 2: Locating Pins
Courtesy of AUDI OF AMERICA, LLC
Rear Axle Support: T10552

Fig 3: Rear Axle Support without Mounting Pin Threaded Sleeve and Support
Courtesy of AUDI OF AMERICA, LLC

Prepare the Rear Axle Support: T10552

Courtesy of AUDI OF AMERICA, LLC

-- Loosen the bolts -arrows-.

-- Adjust the dimension -a-.

Dimension -a- = 250 mm

-- Tighten the bolts to 10 Nm.

-- Loosen the bolt -right arrow lower-.

Courtesy of AUDI OF AMERICA, LLC

-- Turn the Rear Axle Support - Support: T10552/2 -2- so that the profile is perpendicular to the direction of travel.

-- Adjust the dimension -b-.

Courtesy of AUDI OF AMERICA, LLC

FWD vehicles, without high-voltage system -b- = 250 mm.
FWD vehicles, with high-voltage system -b- = 330 mm.
AWD vehicles -b- = 410 mm.

-- Tighten the bolt -arrow- to 10 Nm:

-- Loosen the left and right lower Support Bolts: T10552/1 -3-.

Courtesy of AUDI OF AMERICA, LLC

-- Adjust the dimension -c-.

Dimension -c- = 50 mm.

-- Turn the left and right threaded sleeves on the Support Bolts: T10552/1 -3- until the dimension -d- is reached.

Courtesy of AUDI OF AMERICA, LLC

FWD vehicles, without high-voltage system -d- = 190 mm.
FWD vehicles, with high-voltage system -d- = 230 mm.
AWD vehicles -d - = 215 mm.

-- Place the Rear Axle Support: T10552 -1- on the Engine and Gearbox Jack: VAS6931 -2-.

Courtesy of AUDI OF AMERICA, LLC

-- Tighten the bolt -right arrow- :

Courtesy of AUDI OF AMERICA, LLC

M6: 5 Nm
M8: 10 Nm

Procedure

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

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

FWD Vehicle:

Courtesy of AUDI OF AMERICA, LLC

-- Bring the prepared Rear Axle Support: T10552 with the Engine and Gearbox Jack: VAS6931 to rest on the subframe.

The Mounting Pins: T10552/1 engage in the holes on the back of the subframe.

-- Secure the subframe with the rear axle support tensioning strap.

AWD Vehicle:

Courtesy of AUDI OF AMERICA, LLC

-- Remove the rear driveshaft tube with the flexible disc and vibration damper from the rear final drive. Refer to the appropriate Service Information .

-- Support the driveshaft -3- on the tunnel brace -1- with a suitable wooden block or hard foam block -2-.

-- Slide the rear driveshaft tube as far as possible in the direction of the transmission.

-- Position the Rear Axle Support: T10552 -1- with the Engine and Gearbox Jack: VAS6931 -5- under the subframe and lift.

Courtesy of AUDI OF AMERICA, LLC

-- Insert the Rear Axle Support - Locating Bores: T10552/1 -2- in the holes on the subframe -A arrows-.

-- Secure the Rear Axle Support - Support : T10552/2 -3- on the subframe using the tensioning strap -4-.

Continuation for Subframe without Bonded Rubber Bushing.

Courtesy of AUDI OF AMERICA, LLC

-- Remove the screw -1- on the left and right.

To secure the subframe the locating pins from the Locating Pins: T10096 must be installed one after the other on the left and right at the positions -2 and 3-.
The threaded pin must only be tightened to a maximum of 20 Nm or else the threads will be damaged.

CAUTION:

Improper handling increases the risk of damaging the threads in the vehicle body.

- Never use an impact wrench to loosen or tighten.

- Position the bolts by hand only and screw in the first threads.

-- Remove one of the front bolts of the subframe -arrow-.

Fig 4: Identifying Front Bolts

Courtesy of AUDI OF AMERICA, LLC

-- Install the threaded pin from the Locating Pins: T10096 -1- and tighten to 20 Nm.

Fig 5: Identifying Locating Pins

Courtesy of AUDI OF AMERICA, LLC

-- Repeat this procedure for the second front bolt and the rear subframe bolts.

The subframe position is now secured.

Continuation for Subframe with Bonded Rubber Bushing:

Courtesy of AUDI OF AMERICA, LLC

To secure the subframe the locating pins from the Locating Pins: T10096 must be installed one after the other on the left and right at the positions -1 and 2-. (Shown on an AWD vehicle).
The threaded pin must only be tightened to a maximum of 20 Nm or else the threads will be damaged.

CAUTION:

Improper handling increases the risk of damaging the threads in the vehicle body.

- Never use an impact wrench to loosen or tighten.

- Position the bolts by hand only and screw in the first threads.

-- Remove a bolt from -1- for the subframe.

-- Install the threaded pin -1- from the Locating Pins: T10096 and tighten to 20 Nm.

Courtesy of AUDI OF AMERICA, LLC

-- Repeat this procedure for the second front bolt and the rear subframe bolts.

The subframe position is now secured.

Removing the threaded pin from the Locating Pins: T10096 .

Removal is performed in the reverse order. Note the following:

-- Only remove one locating pin diagonally and replace the bolt in this location and tighten.

CAUTION:

Improper handling increases the risk of damaging the threads in the vehicle body.

- Never use an impact wrench to loosen or tighten.

- Position the bolts by hand only and screw in the first threads.

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

CAUTION:

There is a risk of accident due to threaded connections that are not tightened correctly.

- Tighten threaded connections correctly before driving on public roads.

-- A road test must be performed after completing repairs. If the steering wheel is crooked, the wheels must be aligned. Refer to AXLE ALIGNMENT .

Tightening Specifications

Refer to OVERVIEW - SUBFRAME
Refer to OVERVIEW - MUFFLER .