Subframe With Attachments
Subframe with Attachments
Special tools, testers and auxiliary items required
• Torque Wrench 5-50 Nm (V.A.G 1331)
• Torque Wrench 40-200 Nm (V.A.G 1332)
• Engine-/Gearbox Jack (V.A.G 1383 A)
• Tensioning Strap (T10038)
• Vehicle Diagnosis Tester (T10038)
• 2 wood blocks
Removing
• Must be removed when assembling the brake system later. Note the following: Move the brake piston back.
- Remove the rear wheels.
- Remove the rear section of the exhaust system.
Vehicles with Steel Suspension
- Remove coil springs. Refer to => [ Coil Spring ] Rear Suspension.
Vehicles with Air Suspension
- Remove air springs. Refer to => [ Air Spring ] Rear Suspension.
All Vehicles
- Remove the bolt - arrow -, the washer between the wheel bearing housing and the shock absorber and then remove the left and right shock absorbers from the wheel bearing housing.
- Secure the vehicle to the support arm on the hoist - arrow B - with the (T10038) over the striker pin - arrow A -.
- Place a piece of foam rubber - 1 - between the sill panel and the (T10038) and then tension the strap.
• Be careful not to scratch the sill panel.
If a vehicle is not secured, there is danger that the vehicle could slip off the lift!
- Disconnect the connector - 2 - from the left rear ABS wheel speed sensor (G46) and the right rear ABS wheel speed sensor (G44).
- Remove the left and right bolts - 1 - and the bracket with the wires from the wheel bearing housing.
- Disconnect the connector - 1 - from the left rear level control system sensor (G76) and from the right rear level control system sensor (G77) (if equipped).
- Free up the wiring harness - 2 - - arrow -
- Remove the cover - 1 and 2 - from the underbody..
- Remove the center cover - 2 -, if equipped..
- Remove the diagonal braces, if equipped. Refer to => [ Diagonal Braces ] Diagonal Braces.
- Remove the stone chip protection - 1 and 2 -, if equipped.
- Disconnect the right and left brake line - 4 - from the brake hose - 2 -.
• Ignore - 1 -.
- Subframe, locating, refer to => [ Subframe, Securing, FWD ] Subframe, Securing, FWD.
- Remove the left and right bolts - arrow -.
- Carefully lower subframe with components. Pay attention to any wires that may be hanging down.
Installing
Install in reverse order of removal. Note the following:
Tightening specifications, refer to => [ Subframe Overview, FWD ] Subframe Overview, FWD.
• Bonded rubber bushings can only be turned to a limited extent. Only tighten suspension bolts when vehicle is in curb weight or control position.
• Wheel Bearing, lifting into curb weight position, vehicles with steel suspension, refer to => [ Wheel Bearing, with Coil Spring, Lifting into Curb Weight Position ] Description and Operation.
• For vehicles with air spring suspension, lift wheel suspension in control position, refer to => [ Wheel Bearing, with Air Suspension, Lifting to Curb Weight Position ] Rear Suspension.
- Tighten the left and right bolts - arrow -.
• Only install the coil springs or air springs when the subframe bolts have been tightened to the specification.
- Remove the (T40242). Refer to => [ Subframe, Securing, AWD ] Subframe, Securing, AWD.
- Install the springs. Refer to => [ Coil Spring ] Rear Suspension or => [ Air Spring ] Rear Suspension.
- Attach the right and left brake hoses.
- Install the shock absorber. Refer to => [ Shock Absorber ] Rear Suspension.
- Install the underbody covers..
- Install the center cover - 2 -, if equipped..
- Install the diagonal braces (if equipped). Refer to => [ Diagonal Braces ] Diagonal Braces.
- Install the rear section of the exhaust system.
- Bleed the brake system.
- Install the rear wheels.
- Axle alignment is required, see table. Refer to => [ Wheel Alignment ] Wheel Alignment.
The axle alignment must be performed on a VW/Audi approved alignment stand.
• If the subframe was removed and installed again, then the control position must be programmed again on vehicles with air suspension. Start the program on the vehicle diagnosis tester in "Guided Functions".
• It is necessary to reprogram the control position on vehicles with air suspension if the vehicle level sensor or the linkage on the vehicle level sensor was loosened during installation. Start the program using vehicle diagnosis tester in "Guided Functions".
• If the control position was reprogrammed on vehicles with lane assist, the camera control module (J852) must be calibrated again. Refer to => [ Camera Control Module (J852), Lane Assist, Calibrating ] Testing and Inspection.