Subframe

Subframe

Special tools, testers and auxiliary items required

• Vehicle Diagnostic Tester (VAS 5051B)

• Hose Clamps up to 25 mm (3094)

• Tensioner Hooks (VW 552)

• Bits (T10099)

• Ball Joint Puller (T10187)

• Torque Wrench (V.A.G 1331)

• Torque Wrench (V.A.G 1332)

• Engine/Gearbox Jack (V.A.G 1383 A)

• Scissor Lift Table (VAS 6131)

• Left Support (VAS 6131/6-1)

• Right Support (VAS 6131/6-2)

• Left Axle Support (VAS 6131/6-3)

• Right Axle Support (VAS 6131/6-4)

• Support (2x) (VAS 6131/6-5)

• 2 bolts M14 x 1.5 x 90, for example bolts (N 104 281 01)

Removing

Brief Description

Subframe is removed using scissor lift table. Front mounting points of engine carrier must be secured using shorter bolts. Subframe is removed together with the following: Steering gear, front axle drive, lower control arm and wheel bearing housing. The air spring shock absorbers/steel spring shock absorbers and the upper control arms remain in the vehicles.

Vehicles with an Air Spring Shock Absorber

- Activate the vehicle lift mode and place the vehicle on the lifting platform. Refer to => [ Vehicle Lift Mode ] Description and Operation.

Continuation for All Vehicles

- Loosen the wheel bolts.

- Raise the vehicle.

- Remove the front wheels.

Vehicles with an Air Spring Shock Absorber

- Bleed the air spring shock absorber with the (VAS 5051B).

Continuation for All Vehicles

- Clamp off the suction hose at the power steering fluid reservoir - 2 -.






1. (3094)


- Attach the (VW 552) - 1 - to both sides of the vehicle in the upper opening of the wheel housing and the upper control arm.






- Slightly pretension the control arm so that the control arm ball stud is not damaged.

- Remove the upper brake line bracket - 1 - from the wheel bearing housing - arrow -.






- Pull the harness connector - 1 - and cable out of the bracket - 3 -.






- Remove the bolt - 2 - and the lower line hose bracket - 3 - from the wheel bearing housing.

- Loosen the nut of the upper control arm, but do not unscrew yet.






To protect thread, screw nut on pin a few turns.

- Press out the upper control arm.

1. (T10187)


- In the wheel housing disconnect the brake hoses from the brake lines.

- Clamp off the return line.






1. (3094)


- Remove the noise insulation below the engine/transmission.

- Release and disconnect the harness connector - 1 - from the servotronic solenoid valve (N119).






- Remove the brackets for the hydraulic lines - 1 -.






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

- Disconnect all electrical wires from body to axle.

- Disconnect the driveshaft from the front final drive and tie up.

- If present, remove the bolts - arrows -.






- Remove the heat shield - 1 - from the steering gear - 2 -.

- Turn the steering gear to the right to the stop.

- Remove the bolt - arrow - of the universal joint - 1 -.






- Remove the universal joint - 1 - from the power steering gear - 2 -.

- Install the supports on the (VAS 6131) as shown in the figure.






1. (VAS 6131/6-1)

2. (VAS 6131/6-2)

3. (VAS 6131/6-3)

4. (VAS 6131/6-4)

5. (VAS 6131/6-5)


- Support subframe using scissor lift table.






1. (VAS 6131/6-3)

2. (VAS 6131/6-1)

3. (VAS 6131/6-5)


- Unscrew the bolt - 1 - for the shock absorber - 2 - on the control arm.






- Remove the left and right coupling rod from the stabilizer bar - 1 -.






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

- Remove the front bolts - 1 - for the subframe.






- Lower the subframe - 1 - approximately 50 mm with the (VAS 6131).






- Screw in two bolts M14 x 1.5 x 90, for example bolts (N 104 281 01) to secure the engine carrier to the body on the left and right - 2 -.

- Carefully pull the vent line from the front final drive.

- Slowly lower the subframe while ensuring freedom of movement.

Installing

Install in reverse order of removal. Note the following:

Install the driveshaft.

- Install the subframe using new bolts.

- Install the universal joint - 1 - on the steering gear and tighten the bolt - arrow - to the specified torque.






- If present, bolt the heat shield - 1 - to the steering gear - 2 - - arrows -.






- Remove the (3094) - 1 - from the suction hose at the power steering fluid reservoir - 2 -.






- Remove the (3094) - 1 - from the return line.






- Install front wheels and tighten. Refer to => [ Wheel Bolt Torque Specification ] [1][2]Specifications.

- Bleed brake system.

Tightening Specifications