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SUBFRAME, Servicing, Vehicles With Front Wheel Drive (Fwd)

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Special tools and workshop equipment required 

NOTE:

If a bonded rubber bushing is faulty, then the bonded rubber bushing on the opposite side must also be replaced.

Check the other bushings before replacing a faulty bonded rubber bushing.

If cracks, oil leaks or other damage is visible, this bonded rubber busing must be replaced too.

There are different versions depending on the model: either a conventional bonded rubber bushing or a hydraulic one. Refer to FRONT BONDED RUBBER BUSHING , and REAR BONDED RUBBER BUSHING .

-- Place the vehicle on a hoist.

-- Remove the wheels.

-- Remove the coil springs. Refer to SPRING, REMOVING AND INSTALLING .

NOTE:

To replace the rubber bonded bushing, the subframe must be lowered at the front or the rear. It is not necessary to remove the subframe.

Lower the subframe alternating between the front and rear. This avoids having to perform an axle alignment.

Do not lower the subframe more than 4 cm.

Identify mounting location to subframe before removing the bonded rubber bushing.

Replace the Front Bonded Rubber Bushing or the Front Hydraulic Bonded Rubber Bushing

Fig 1: Identifying Stone Deflectors
GWWA42-10220Courtesy of AUDI OF AMERICA, LLC

-- Remove the covers -1- and -2-. Refer to OVERVIEW - UNDERBODY PANELS .

-- Remove the diagonal braces on the A5 Cabriolet. Refer to DIAGONAL BRACE, REMOVING AND INSTALLING, A5 CABRIOLET, FRONT WHEEL DRIVE (FWD) .

-- Place Engine/Gearbox Jack VAG1383A with Universal Transmission Support VAG1359/2 -1- under the subframe.

Fig 2: Placing A Block Of Wood Under Subframe
GWWA42-10265Courtesy of AUDI OF AMERICA, LLC

-- Place a wood block -2- under the subframe -1-.

-- Remove the left and right bolts -1- and -2-.

Fig 3: Identifying Left And Right Bolts
GWWA42-10221Courtesy of AUDI OF AMERICA, LLC

-- Remove the left and right supports -3-.

-- Install the Bearing Installer - Component 3346/2 with the thrust bearing from the Subframe Bushing Tool Kit 3301 and Nut - Component 3346/3, as illustrated, on the opposite side of the bonded rubber bushing being replaced approximately 1.5 cm into the vehicle body.

Fig 4: Identifying Spindle 3346/2, 3301 And Nut 3346/3 (Approximately 1.5 cm)
GWWA42-10339Courtesy of AUDI OF AMERICA, LLC
  1. Subframe Bushing Tool Kit 3301
  2. Nut - Component 3346/3
  3. Bearing Installer - Component 3346/2
NOTE:

Turn the Nut - Component 3346/3 on the Bearing Installer - Component3346/2 until dimension -a- 4 cm is reached.

-- Lower the subframe 4 cm only.

Applies to a Hydraulic Bonded Rubber Bushing 

Fig 5: Identifying Plastic Insert -1-
GWWA42-10337Courtesy of AUDI OF AMERICA, LLC

-- Remove the plastic insert -1- upward as illustrated.

Applies to all 

Fig 6: Ends Of Rubber Bead On Bonded Rubber Bushing Must Align With Markings
GWWA42-10326Courtesy of AUDI OF AMERICA, LLC

-- Mark the installation position of the bonded rubber bushing or the hydraulic bonded rubber bushing on the subframe -arrows-.

The illustration shows a hydraulic bonded rubber bushing. On a conventional bonded rubber bushing, the recesses on the rubber shoulders are turned 90°.

-- If necessary, the support -arrow- with the >>small<< interior diameter must be removed from the Hydraulic Press VAS6178 and the Pressure Head T10205/13 for it must be installed.

Fig 7: Identifying Support -Arrow- And VAS 6178
GWWA42-10109Courtesy of AUDI OF AMERICA, LLC

-- Place the tools on the front bonded rubber bushing as shown in the illustration.

Fig 8: Placing Tools On Front Bonded Rubber Bushing
GWWA42-10273Courtesy of AUDI OF AMERICA, LLC
  1. Hydraulic Press - Rear Subframe Bushing Tool Kit-Nut T10263/5
  2. Thrust Piece T40185/5. The opening faces the rubber bonded bushing.
  3. Subframe
  4. Support Ring T40185/6. The conical side must face upward and the ribs must fit into the openings in the rubber bonded bushing.
  5. Tube T40033/3
  6. Bearing Installer - Wheel Hub/Bearing Kit - 4 T10205/4
  7. Hydraulic Press VAS6178
  8. Hydraulic Press - Rear Subframe Bushing Tool Kit-Nut T10263/5
  9. Spindle T10263/4. The spindle pins face downward.
WARNING:
  • Hold the Hydraulic Press VAS6178 firmly while pressing out.
  • The bonded rubber bushing loosens >>abruptly<<, there is danger of injury caused by tools and cover falling down.
Fig 9: Identifying Installation Location Of Front Bonded Rubber Bushing
GWWA42-10335Courtesy of AUDI OF AMERICA, LLC

The grooves -arrows- point in direction of travel.

-- Place the tools on the front bonded rubber bushing as shown in the illustration.

Fig 10: Placing Tools On Front Bonded Rubber Bushing
GWWA42-10274Courtesy of AUDI OF AMERICA, LLC
  1. Hydraulic Press - Rear Subframe Bushing Tool Kit-Nut T10263/5
  2. Thrust Piece T40185/4
  3. Subframe
  4. Bonded rubber bushing or the hydraulic bonded rubber bushing
  5. Subframe Bushing Assembly Tool - Thrust Piece T40185/3
  6. Bearing Installer - Wheel Hub/Bearing Kit - 4 T10205/4
  7. Hydraulic Press VAS6178
  8. Hydraulic Press - Rear Subframe Bushing Tool Kit-Nut T10263/5
  9. Spindle T10263/4. The spindle pins face downward.

-- Align the bonded rubber bushing with the markings made previously and push it in until the collar comes in contact with the bushing in the subframe >>without any gaps<<. If necessary, tension and press over cylinder several times. While pulling in, make sure the bonded rubber bushing does not cant, otherwise outer ring could be damaged.

-- The ends of the rubber bead on the bonded rubber bushing must align with the markings -arrows- on the subframe.

Fig 11: Ends Of Rubber Bead On Bonded Rubber Bushing Must Align With Markings
GWWA42-10326Courtesy of AUDI OF AMERICA, LLC

The illustration shows a hydraulic bonded rubber bushing. On a conventional bonded rubber bushing, the recesses on the rubber shoulders are turned 90°.

NOTE:

After replacing the bearing, fix any paint damage on the subframe with corrosion protection, primer and black top coat.

Install in reverse order of removal.

Replace the Rear Bonded Rubber Bushing or the Rear Hydraulic Bonded Rubber Bushing

Fig 12: Placing A Block Of Wood Under Subframe
GWWA42-10266Courtesy of AUDI OF AMERICA, LLC

-- Loosen the nuts on both rear muffler brackets but only as far as to where the thread begins.

-- Place Engine/Gearbox Jack VAG1383A with Universal Transmission Support VAG1359/2 -1- under the subframe.

-- Place a wood block -2- under the subframe -1-.

-- Remove the rear subframe bolts. Refer to -item  13 - Bolt.

Fig 13: Identifying Spindle 3346/2, 3301 And 3346/3 (Approximately 1.5 cm)
GWWA42-10340Courtesy of AUDI OF AMERICA, LLC

-- Install the Bearing Installer - Component 3346/2 with the thrust bearing from the Subframe Bushing Tool Kit 3301 and Nut - Component3346/3, as illustrated, on the opposite side of the bonded rubber bushing being replaced approximately 1.5 cm into the vehicle body.

  1. Subframe Bushing Tool Kit 3301
  2. Nut - Component 3346/3
  3. Bearing Installer - Component 3346/2
NOTE:

Turn the Nut - Component 3346/3 on the Bearing Installer - Component3346/2 until dimension -a- 4 cm is reached.

-- Lower the subframe 4 cm only.

Applies to a Hydraulic Bonded Rubber Bushing 

Fig 14: Carefully Pry Anti-Twist Mechanism
GWWA42-10327Courtesy of AUDI OF AMERICA, LLC

-- Carefully pry the anti-twist mechanism -1- off the hydraulic bonded rubber bushing with a screwdriver near the retaining tab. Do this in several steps alternating from side to side.

-- Remove the plastic insert -1- upward as illustrated.

Fig 15: Identifying Plastic Insert -1-
GWWA42-10328Courtesy of AUDI OF AMERICA, LLC

Applies to All 

Fig 16: Ends Of Rubber Bead On Bonded Rubber Bushing Must Align With Markings
GWWA42-10326Courtesy of AUDI OF AMERICA, LLC

-- Mark the installation position of the bonded rubber bushing or the hydraulic bonded rubber bushing on the subframe -arrows-.

The illustration shows a hydraulic bonded rubber bushing. On a conventional bonded rubber bushing, the recesses on the rubber shoulders are turned 90°.

-- If necessary, the support -arrow- with the >>small<< interior diameter must be removed from the Hydraulic Press VAS6178 and the Pressure Head T10205/13 for it must be installed.

Fig 17: Identifying Support -Arrow- And VAS 6178
GWWA42-10109Courtesy of AUDI OF AMERICA, LLC

-- Place the tools on the front bonded rubber bushing as shown in the illustration.

Fig 18: Placing Tools On Front Bonded Rubber Bushing
GWWA42-10275Courtesy of AUDI OF AMERICA, LLC
  1. Hydraulic Press - Rear Subframe Bushing Tool Kit-Nut T10263/5
  2. Thrust Piece T40185/5. The opening faces the rubber bonded bushing.
  3. Subframe
  4. Support Ring T40185/6. The conical side must face upward and the ribs must fit into the openings in the rubber bonded bushing.
  5. Tube T40033/3
  6. Bearing Installer - Wheel Hub/Bearing Kit - 4 T10205/4
  7. Hydraulic Press VAS6178
  8. Hydraulic Press - Rear Subframe Bushing Tool Kit-Nut T10263/5
  9. Spindle T10263/4. The spindle pins face downward.
WARNING:
  • Hold the Hydraulic Press VAS6178 firmly while pressing out.
  • The bonded rubber bushing loosens >>abruptly<<, there is danger of injury caused by tools and cover falling down.
Fig 19: Installation Location Of Rear Bonded Rubber Bushing
GWWA42-10336Courtesy of AUDI OF AMERICA, LLC

Applies to a Hydraulic Bonded Rubber Bushing 

Fig 20: Before Installing Front Hydraulic Bonded Rubber Bushing, Carefully Pry Anti-Twist Mechanism Off
GWWA42-10333Courtesy of AUDI OF AMERICA, LLC

Before installing the front hydraulic bonded rubber bushing, carefully pry the anti-twist mechanism -1- off the bushing with a screwdriver near the retaining tab -arrows-. Do this in several steps alternating from side to side.

Applies to all 

Fig 21: Placing Tools On Rear Bonded Rubber Bushing
GWWA42-10276Courtesy of AUDI OF AMERICA, LLC

-- Place the tools on the rear bonded rubber bushing as shown in the illustration.

  1. Hydraulic Press - Rear Subframe Bushing Tool Kit-Nut T10263/5
  2. Thrust Piece T40185/4
  3. Subframe
  4. Bonded rubber bushing or the hydraulic bonded rubber bushing
  5. Subframe Bushing Assembly Tool - Thrust Piece T40185/3
  6. Bearing Installer - Wheel Hub/Bearing Kit - 4 T10205/4
  7. Hydraulic Press VAS6178
  8. Hydraulic Press - Rear Subframe Bushing Tool Kit-Nut T10263/5
  9. Spindle T10263/4. The spindle pins face downward.

-- Align the bonded rubber bushing with the markings made previously and push it in until the collar comes in contact with the bushing in the subframe >>without any gaps<<. If necessary, tension and press over cylinder several times. While pulling in, make sure the bonded rubber bushing does not cant, otherwise outer ring could be damaged.

-- The ends of the rubber bead on the bonded rubber bushing must align with the markings -arrows- on the subframe.

Fig 22: Ends Of Rubber Bead On Bonded Rubber Bushing Must Align With Markings
GWWA42-10326Courtesy of AUDI OF AMERICA, LLC

The illustration shows a hydraulic bonded rubber bushing. On a conventional bonded rubber bushing, the recesses on the rubber shoulders are turned 90°.

NOTE:

After replacing the bearing, fix any paint damage on the subframe with corrosion protection, primer and black top coat.

-- Attach the anti-twist mechanism to the hydraulic bonded rubber bushing.

Install in reverse order of removal.

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