Audi A4: Overview - Subframe

Subframe

  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.

There is a risk of damaging the suspension components.

• If the subframe mount, steering gear or subframe crossbrace are not installed correctly, do not rest the vehicle on its wheels.
• Supporting the vehicle at the subframe or the subframe crossbrace (for example, using a floor jack or similar device) is not permitted.

1 - Bolt

• 90 Nm +90º
• Replace after removing

2 - Fitting Bolt

• 90 Nm +90º
• Replace after removing

3 - Bolt

• 30 Nm

4 - Subframe Crossbrace

• Removing and installing. Refer to → Chapter "Subframe Crossbrace, Removing and Installing".

5 - Bolt

• 115 Nm + 180º
• Replace after removing
• Loosen and tighten together with -Item 11- → Item and -Item 12- → Item diagonally in stages

6 - Subframe

• Securing. Refer to → Chapter "Subframe, Securing".
• Lowering. Refer to → Chapter "Subframe, Lowering".
• Removing and installing. Refer to → Chapter "Subframe with Steering Gear, Removing and Installing".

7 - Bolts

• 9 Nm

8 - Shield

• Removing and installing. Refer to → Chapter "Subframe Shield, Removing and Installing".

9 - Nut

• 9 Nm

10 - Steering Gear

• Overview. Refer to → Chapter "Overview - Steering Gear".

11 - Bolt

• 115 Nm + 180º
• Replace after removing
• Loosen and tighten together with -Item 5- and -Item 12- → Item diagonally in stages

12 - Bolt

• 50 Nm + 90º
• Replace after removing
• Loosen and tighten together with -Item 5- and -Item 11- → Item diagonally in stages

13 - Clip

Subframe Crossbrace - Tightening Sequence

- Tighten the bolts in the steps shown in the sequence:

Stabilizer Bar

1 - Nut

• 30 Nm
• Replace after removing
• Remove and tighten evenly alternating from side to side.

2 - Clamp

3 - Stabilizer Bar

• With rubber bushing
• The rubber bushing cannot be replaced separately
• Removing and installing. Refer to → Chapter "Stabilizer Bar, Removing and Installing".

4 - Nut

• 40 Nm + 90º
• Replace after removing
• Tighten in the curb weight position. Refer to → Chapter "Wheel Bearing in Curb Weight Position, Lifting Vehicles with Coil Spring".

5 - Subframe

6 - Bolt

• Replace after removing

7 - Coupling Rod

• Removing and installing. Refer to → Chapter "Coupling Rod, Removing and Installing".

8 - Shock Absorber Fork

• Removing and installing. Refer to → Chapter "Shock Absorber Fork, Removing and Installing".

9 - Nut

• 40 Nm + 90º
• Replace after removing
• Tighten in the curb weight position. Refer to → Chapter "Wheel Bearing in Curb Weight Position, Lifting Vehicles with Coil Spring".

10 - Bolt

• Replace after removing

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