Subframe
Subframe
• The following tools can be used on all engine versions.
Special tools, testers and auxiliary items required
• Engine support bridge (10-222 A)
• Engine Support Supplement Set (T40093)
• Engine/transmission jack (V.A.G 1383 A)
• Wheel hub support (T10149)
• Tensioning strap (T10038)
Removing
- Remove wheels.
- Remove noise insulation.
- Remove the left and right wheel housing liner.
- Remove the crossbrace. Coupe and Sportback, refer to => [ Subframe Crossbrace, Coupe and Sportback ] Subframe Crossbrace, Coupe and Sportback.
- Remove the crossbrace. Cabriolet, refer to => [ Subframe Crossbrace, Cabriolet ] Subframe Crossbrace, Cabriolet.
- Remove the right and left subframe shield if applicable. Refer to => [ Subframe Heatshield ] Subframe Heatshield.
- Remove the stabilizer bar. Refer to => [ Stabilizer Bar ] Stabilizer Bar.
- Remove the vehicle level sensor, if applicable. Refer to => [ Level Control System Sensor ] Level Control System Sensor.
- Secure the left and right wheel housing liner using a (T10038) as shown in the illustration.
- Remove the left and right control arms. Refer to => [ Track Control Arm ] Track Control Arm.
- Hydraulic steering gear, removing, refer to => [ Steering Gear ] Steering Gear.
- Electromechanical steering gear, removing, refer to => [ Steering Gear ] Steering Gear.
- Support the engine entirely using the (10-222 A).
• (10-222 A)
• (T40093) , needed depending on the engine.
- Remove the bolts - 1 - and nuts - 3 - and the longitudinal braces - 2 -.
- Remove the bolt - 1 -.
- Move the guide link and secure it to the body with wire.
- On vehicles with electro-hydraulic engine mounts, disconnect the left electro-hydraulic engine mount solenoid valve (N144) and right electro-hydraulic engine mount solenoid valve (N145) connector - arrow -.
- Depending on the engine version, remove the nut - 2 - for the electrical wiring bracket on the right side of the vehicle.
- Remove the bolt - arrow - (if equipped) from the bracket for the power steering line.
- Remove the left and right engine mount bolts - 1 and 5 -.
- Move the left and right engine mount retaining plate - 2 - to the side.
- Before lowering the subframe, make sure all the electrical wiring connections have been disconnected and removed.
• Mark the installation location of the subframe - A - to - D -, for example, using a felt-tip pen.
- Remove the bolts - 1 - through - 8 - and remove the subframe.
Installing
Install in reverse order of removal. Note the following:
Tightening specifications, refer to => [ Subframe, Crossbrace, Stabilizer Bar and Coupling Rod Overview, through 08.2007 ] Subframe, Crossbrace, Stabilizer Bar and Coupling Rod Overview, Through 08.2007.
=> [ Subframe, Crossbrace, Diagonal Brace, Stabilizer Bar, Coupling Rod and Subframe Shield Overview, from 09.2007 ] Subframe, Crossbrace, Diagonal Brace, Stabilizer Bar, Coupling Rod and Subframe Shield Overview, From 09.2007.
Tightening specifications, refer to => [ Mounting Bracket, Shock Absorber Fork, Upper Control Arm and Tower Brace Overview ] Service and Repair.
Tightening specifications, refer to => [ Track Control Arm, Ball Joint, Guide Link and Level Control System Sensor Overview ] Track Control Arm, Ball Joint, Guide Link and Level Control System Sensor Overview.
Tightening specifications, refer to => [ Wheel Bearing Housing and Wheel Bearing Unit Overview ] Removal and Replacement.
Subframe Bolting Procedure
- Insert the subframe and align according to the markings - A - and - B - made earlier. Tighten bolts - 2 - and - 3 - to the specification.
- Press the subframe at the markings - C - or - D - and tighten the bolts - 5 - and - 8 - to the specification.
- Insert the bolts - 1 -, - 4 -, - 6 - and - 7 - and tighten to the specification.
- Tighten the bolts - 1 - through - 8 - with an additional turn.
• Bonded rubber bushings can only be turned to a limited extent. Only tighten suspension screws when vehicle is in curb weight or control position.
• Lifting wheel bearing to curb weight position, refer to => [ Wheel Bearing with Coil Spring, Lifting to Curb Weight Position ] Front Suspension.
- On vehicles with automatic headlamp range control system, perform a basic setting on the headlamps.
- If the vehicle level sensor was removed and installed on a vehicle with electronically controlled damping or if the linkage was loosened, the control position must be reprogrammed. Refer to => [ Control Position, Programming using Vehicle Diagnostic Tester ] Testing and Inspection.
- If the control position was reprogrammed on vehicles with lane assist, the directional stabilization assistance control module (J759) must be recalibrated. Refer to => [ Lane Assist Calibration Procedure ] Lane Assist Calibration Procedure.
- Tighten wheel.
- Axle alignment is required, see Table. Refer to => [ Wheel Alignment ] Wheel Alignment.