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Home >> Audi >> 2021 >> A4 Quattro Premium Plus, 2.0L Eng VIN B >> Repair and Diagnosis >> Suspension >> Rear Suspension >> Rear Suspension >> 42 Rear Suspension >> SUBFRAME >> SUBFRAME, Securing

SUBFRAME, Securing

Special tools and workshop equipment required 

Tools, Preparing

GWWN42-10751Courtesy of AUDI OF AMERICA, LLC

-- Loosen the bolts -arrows-.

-- Adjust the dimension -a-.

-- Tighten the bolts again.

Procedure 

-- Equipped on some models: remove the left and right diagonal brace. Refer to DIAGONAL BRACES, REMOVING AND INSTALLING

-- Remove the muffler. Refer to MUFFLER, REMOVING AND INSTALLING .

-- Remove the left and right spring. Refer to SPRING, REMOVING AND INSTALLING .

AWD Equipment Versions with Rear Final Drive Installed

GWWA42-10866Courtesy of AUDI OF AMERICA, LLC

-- Support the subframe using the :VAS6931  and :T40173  as shown on the rear final drive and on the subframe.

FWD or AWD Equipment Versions with Rear Final Drive Removed

GWWA20-11801Courtesy of AUDI OF AMERICA, LLC

-- Equipment versions with gas fuel systems: remove the nuts -arrows-, and remove the wind deflector -1-.

-- If necessary, bring the stabilizer bar into the installation position and secure it with bolts.

GWWA42-10938Courtesy of AUDI OF AMERICA, LLC

-- Position the :T10552  with the :VAS6931  under the subframe and lift.

-- Bring the :T10552/2  all the way on the stabilizer bar.

-- Place the :T10552/1  all the way into the rear holes on the subframe by turning left and right at the threaded sleeve.

Continuation:

-- Secure the subframe with the tensioning strap from the engine and gearbox jack.

CAUTION:

There is a risk of damaging the threads on the subframe threaded connection to the body.

  • The subframe bolts on the body must not be loosened or tightened with an impact wrench.
  • Always install all bolts by hand for the first few turns.

-- Remove the left and right bolt -2- from the rear subframe one after the other and install a locating pin from the :T40327  .

GWWA42-10638Courtesy of AUDI OF AMERICA, LLC
NOTE:

If the locating pin cannot be inserted, rework the stop plate in the subframe mount near the retaining tabs slightly with a file.

-- Tighten locating pin to 20 Nm.

-- Remove the left and right bolts -1- from the subframe.

Remove the :T40327 

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

CAUTION:

There is a risk of damaging the threads on the subframe threaded connection to the body.

  • The subframe bolts on the body must not be loosened or tightened with an impact wrench.
  • Always install all bolts by hand for the first few turns.
WARNING:

Risk of accident!

  • If the vehicle will be driving on the streets, all bolts and nuts must be tightened properly according to the guidelines.

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

-- 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