Subframe: Service and Repair

Subframe Overview

• Welding and straightening work on supporting or wheel carrying components of the suspension is not permitted.

• Always replace self-locking nuts.

• Always replace corroded bolts/nuts.

• Bonded rubber bushings can only be turned to a limited extent. Therefore, the threaded connections of the components with bonded rubber bushings should only be tightened when the wheel bearing housing is lifted (curb weight position). Refer to => [ Wheel Bearing, Lifting to Curb Weight Position ] Procedures.






1 Subframe

• Locating, refer to => [ Subframe, Securing ] Subframe, Securing.

• Removing and installing without steering gear, refer to => [ Subframe without Steering Gear ] Front Suspension.

• Removing and installing with hydraulic steering gear, refer to => [ Subframe with Hydraulic Steering Gear ] Subframe with Hydraulic Steering Gear.

• Removing and installing with electromechanical steering gear, refer to => [ Subframe with Electromechanical Steering Gear ] Subframe with Electromechanical Steering Gear.

• Servicing, refer to => [ Subframe Bonded Rubber Bushing ] Service and Repair

• For the correct allocation, refer to the Electronic Parts Catalog (ETKA).

2 Nut

3 Washer

4 Bolt

• M12 x 1.5 x 100

• 70 Nm + 90° turn

• Always replace if removed.

5 Bolt

• M12 x 1.5 x 90

• 70 Nm + 90° turn

• Always replace if removed.

6 Control Arm

• Replace with ball joint if damaged.

• Removing and installing, refer to => [ Control Arm ] Control Arm.

• Removing and installing (left side of the vehicle with a DSG transmission or automatic transmission) refer to => [ Control Arm, Left Side of Vehicle with DSG or Automatic Transmission ] Control Arm, Left Side of Vehicle with DSG or Automatic Transmission.

7 Bolt

• M12 x 1.5 x 80

• 70 Nm + 90° turn

• Always replace if removed.

8 Bolt

• M12 x 1.5 x 80

• 70 Nm + 90° turn

• Always replace if removed.

9 Bolt

• M14 x 1.5 x 70

• 100 Nm + 90° turn

• Tighten only when the pendulum support is bolted to the transmission.

• Always replace if removed.

10 Bolt

• M10 x 75

• 50 Nm + 90° turn

• Always replace if removed.

11 Bolt

• M10 x 35

• 50 Nm + 90° turn

• Always replace if removed.

12 Lower Bonded Rubber Bushing for Pendulum Support

• Ejecting and pressing in, refer to => [ Subframe Bonded Rubber Bushing ] Service and Repair.

13 Pendulum Support

• Bolt first to transmission, then to subframe.

• Various versions.

• For the correct allocation, refer to the Electronic Parts Catalog (ETKA).

14 Upper Bonded Rubber Bushing for Pendulum Support

• Ejecting and pressing in, refer to => [ Subframe Bonded Rubber Bushing ] Service and Repair.