Front Subframe Mount: Service and Repair

Subframe Bonded Rubber Bushings

• The following tools can be used on all engine versions. The tools needed for working on a specific engine are described => [ Support engine entirely with engine support bridge. ] Service and Repair.

Special tools, testers and auxiliary items required

• Engine Support Bridge (10 - 222 A)

• Bracket with Spindle and Hook (10 - 222 A /10)

• Adapter (10 - 222 A /19)

• Engine Sling (2024 A)

• Engine-/Gearbox Jack (V.A.G 1383 A)

• Engine Support (T10014) (only needed with 3.0L TDI)

• Adapter (10 - 222 A /22)

• Engine Support Basic Set (T40091)

• Engine Support Supplement Set (T40093)

• Hose Clamps Up to 25 mm Dia. (3094)

• Hydraulic Press (VAS 6178)

• Pneumatic/Hydraulic Foot Pump (VAS 6179)

• Assembly Tool (T10301)

Removing

Affects Vehicles with Air Suspension

- Place vehicle on hoist. Refer to => [ Positioning Vehicle on Hoist and Wheels ] Positioning Vehicle on Hoist and Wheels.

Affects All Vehicles

- Remove noise insulation.

- Support engine entirely with engine support bridge.

- Support 3.6L FSI engine with engine support bridge => [ Affects Vehicles with 3.6L FSI Engine ] Service and Repair.

- Support the 3.0L TFSI engine completely with engine support bridge.

- Support 3.6L FSI engine with engine support bridge => [ Affects Vehicles with 4.2L FSI Engine ] Service and Repair.

- Support 3.0L TDI engine completely with engine support bridge => [ Affects Vehicles with 3.0L TDI Engine ] Service and Repair.

- Remove the driveshaft from the front final drive and tie it up.

- Disconnect the connector - arrow - at servotronic solenoid valve (N119).






- Remove - A - (if equipped) from the steering gear (2 bolts).






• Only remove universal joint from steering gear with front wheels in straight ahead position.

• Do not change steering wheel position and steering gear position.

- Remove bolt - B - for universal joint at steering gear and remove universal joint from steering gear.

Affects Vehicles with 3.0L TDI Engine

• The (3094) must not be secured on return hose in check valve area.

• The check valve is in the return hose between the cambers - A arrows - or between hose clamps - B arrows -.

Check Valve in Return Hose





- Clamp the intake hose and the return line on the reservoir using (3094).






- Remove bracket for hydraulic lines - 1 -.






- Remove pressure line and return line - 2 - from steering gear.

Affects All Vehicles






- Disconnect left and right connectors - 2 -.

- Place (V.A.G 1383 A) with wooden block under subframe and press lightly against.






- Subframe, locating, refer to => [ Subframe, Securing ] Description and Operation.

- Remove bolts - 4 -.






- Lower subframe approximately 200 mm with (V.A.G 1383 A).






- Remove bolts - 1 - to - 4 -.

- Remove stabilizer bar - 5 -.

Pressing Off






- Attach supporting ring (T10301/8) so that narrow side - arrow - faces subframe.

• Supporting ring (T10301/8) must be able to be attached easily and must not be canted.

- Install tools as shown in the illustration.






1. Thrust piece (T10301/5)

2. Support ring (T10301/8)

3. Tube (T10301/3)

4. Spacer (T10301/9)

5. Hydraulic cylinder (VAS 6178)

6. Nut (T10301/2)

7. Spindle (T10301/1)


- Press out the bonded rubber mount.

Hold the (VAS 6178) during the pressing-out procedure.

Installation Position






One of the arrows - 1 - must point in direction of travel

Pressing In the Bonded Rubber Mount






- Install the thrust plate (T10301/10) - 1 - with the open side to the subframe.

When pressing in bonded rubber bushing, make sure that (T10301/10) is in correct position to prevent subframe from damage.

- Mount the tools as illustrated.






1. Thrust piece (T10301/7)

2. Bonded rubber mount

3. Thrust plate (T10301/10)

4. Spacer (T10301/11)

5. Hydraulic cylinder (VAS 6178)

6. Nut (T10301/2)

7. Spindle (T10301/1)


- Press in bonded rubber bushing until shoulder lies gap-free at subframe sleeve.

Replacing the front bonded rubber bushing in direction of travel, V8 TDI from MY 11






- Place the (V.A.G 1383 A) under the subframe.

- Remove the front subframe bolts - 1 - and the thrust washers - 2 -.

- Lower the subframe - 1 -.






• a - maximum 40 mm

Pressing Off






- Attach the supporting ring (T10301/14) - 1 - so that the narrow side - arrow - faces the subframe.

• Supporting ring (T103301/14) must be able to be attached easily and must not be canted.

- Mount the tools as illustrated.






1. Thrust piece (T10301/5)

2. Support ring (T10301/14)

3. Tube (T10301/13)

4. Spacer (T10301/9)

5. Hydraulic press (VAS 6178) with pressure head (T10205/13)

6. Nut (T10301/2)

7. Spindle (T10301/1)


• Before pressing out, place the (V.A.G 1383 A) with the universal mount under the cylinder since the cylinder may fall down at the end of the pressing out procedure.

• Hold the hydraulic press (VAS 6178) during the pressing-out procedure.

- Press out the bonded rubber mount.

Installation Position






• The cams - arrows A - must point in the longitudinal vehicle direction.

• The cutouts - arrows B - must point in the direction of travel.

Pressing In the Bonded Rubber Mount






- Install the thrust plate (T10301/15) - 1 - with the open side to the subframe.

When pressing in the bonded rubber bushings, make sure that the thrust plate (T10301/15) is positioned correctly, to prevent the subframe from being damaged.

- Mount the tools as illustrated.






1. Thrust piece (T10301/7)

2. Bonded rubber mount

3. Thrust plate (T10301/15)

4. Spacer (T10301/11)

5. Hydraulic press (VAS 6178) with pressure head (T10205/13)

6. Nut (T10301/2)

7. Spindle (T10301/1)


- Press in bonded rubber bushing until shoulder lies gap-free at subframe sleeve.

Pressing Out the Bonded Rubber Mount






- Mount the tools as illustrated.

1. Thrust piece (T10301/5)

2. Support ring (T10301/8)

3. Tube (T10301/3)

4. Hydraulic cylinder (VAS 6178)

5. Nut (T10301/2)

6. Spindle (T10301/1)


- Press out the bonded rubber mount.

Hold the (VAS 6178) during the pressing-out procedure.

Installation Position






One of the arrows - 1 - must point in direction of travel

Pressing In the Bonded Rubber Mount






- Mount the tools as illustrated.

1. Thrust piece (T10301/7)

2. Bonded rubber mount

3. Thrust plate (T10301/6)

4. Hydraulic cylinder (VAS 6178)

5. Nut (T10301/2)

6. Spindle (T10301/1)


- Press in bonded rubber bushing until shoulder lies gap-free at subframe sleeve.

Installing

Installation is the reverse of removal, with special attention to the following:

Tightening specifications, refer to => [ Subframe, Stabilizer Bar and Coupling Rod Overview ] Front Axle Overview

Tightening specifications, refer to => [ Steering Gear Overview ] Steering Gear Overview

- Tighten the driveshaft.

- Tighten the wheels.

- On vehicles with air suspension, position vehicle on wheels. Refer to => [ Positioning Vehicle on Hoist and Wheels ] Positioning Vehicle on Hoist and Wheels.

- Bleed the steering system. Refer to=> [ Steering System, Bleeding after Reinstalling ] Service and Repair.

- Check power steering fluid level. Refer to => [ Power Steering, Checking Hydraulic Oil Level ] Power Steering, Checking Hydraulic Oil Level.

- Check the steering system for leaks. Refer to => [ Steering System, Checking for Leaks ] Steering System, Checking For Leaks.