Subframe Bonded Rubber Bushing and Front Hydraulic Bonded Rubber Bushing
Subframe Bonded Rubber Bushing and Front Hydraulic Bonded Rubber Bushing
Special tools, testers and auxiliary items required
• Assembly Tool (3301)
• Assembly Tool (3346)
• Torque Wrench 40-200 Nm (V.A.G 1332)
• Engine-/Gearbox Jack (V.A.G 1383 A)
• Hydraulic Press (VAS 6178)
• Pneumatic/Hydraulic Foot Pump (VAS 6179)
• Assembly Tool (T10205)
• Assembly Tool (T10263)
• Assembly Tool (T40033)
• Assembly Tool (T40185)
Removing
• If a bonded rubber bushing is faulty, then the bonded rubber bushing on the opposite side must also be replaced. For the correct allocation, refer to the Parts Catalog.
• Check the other bushings before replacing a faulty bonded rubber bushing.
• If cracks, oil leaks or other damage is visible, this bonded rubber bushing must be replaced too.
• There are different versions of the bonded rubber bushing. For the correct allocation, refer to the Parts Catalog.
- Remove the rear wheels.
Vehicles with Steel Suspension
- Remove coil springs. Refer to => [ Coil Spring ] Rear Suspension.
Vehicles with Air Suspension
- Start the program on the Vehicle Diagnosis Tester in "Guided Functions" and bleed the air springs on the rear axle.
All Vehicles
- Remove the diagonal braces, if equipped. Refer to => [ Diagonal Braces ] Diagonal Braces.
• To replace the rubber bonded bushing, lower the front of the subframe. It is not necessary to remove the subframe.
• Do not lower the subframe more then 4 cm (1.6 inches).
• Identify mounting location to subframe before removing the bonded rubber bushing.
- 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!
- Remove the cover - 1 and 2 - from the underbody.
- Place (V.A.G 1383 A) under the subframe - 1 -.
- Place a block of wood - 2 - under the subframe - 1 -.
- Remove the left and right bolts - arrow -.
- Install the (T40253) and (3301) and support arm bearing installation tool (T40253/1) approximately 1.5 cm into the body on the opposite side of the bonded rubber bushing to be replaced as illustrated.
1. (3301)
2. (T40253/1)
3. (T40253)
• Turn (T40253/1) on the (T40253) until dimension - a - 4 cm is reached.
- Lower the subframe 4 cm (1.6 inches) only.
Applies to a Hydraulic Bonded Rubber Bushing
- Remove the plastic stop - 1 - upward as illustrated.
Applies to All
- Pry the stop plate - 1 - off the bonded rubber bushing alternating from side to side.
- Mark the installation position of the bonded rubber bushing or the hydraulic bonded rubber bushing on the subframe - arrows - for later installation.
- If necessary, the support - arrow - with the "small" interior diameter must be removed from the (VAS 6178) and the support (T10205/13) for that installed.
- Place the tools on the front bonded rubber bushing as shown in the illustration.
1. 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. Support ring (T10205/4)
7. (VAS 6178)
8. (T10263/5)
9. Spindle (T10263/4). The spindle pins face downward.
• Secure (VAS 6178) while pressing out.
• Bonded rubber bushing loosens "abruptly". There is the risk of injuries by tools and bonded rubber bushing coming off!
Installing
- Pry the stop plate - 1 - near the tabs - arrows - off the bonded rubber bushing alternating from side to side before installing the bonded rubber bushing.
Conventional bonded rubber bushing installed position:
• The grooves - arrows - point in direction of travel.
Hydraulic bonded rubber bushing installed position:
• The grooves - arrows - point in direction of travel.
- Place the tools on the front bonded rubber bushing as shown in the illustration.
1. Nut (T10263/5)
2. Thrust piece (T40185/4)
3. Subframe
4. Bonded rubber mount
5. Thrust piece (T40185/3)
6. Support ring (T10205/4)
7. (VAS 6178)
8. (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.
• After replacing the bearing, fix any paint damage on the subframe with corrosion protection, primer and black top coat.
- Mount the stop plate on the bonded rubber bushing.
Further installation is in the reverse sequence to removal. Note the following:
- Install the diagonal braces. Refer to => [ Diagonal Braces ] Diagonal Braces.
- Install coil springs. Refer to => [ Coil Spring ] Rear Suspension.
- Install the underbody covers.
- Install the rear wheels.
- Start the program on the vehicle diagnosis tester in "Guided Functions" and fill the air springs on the rear axle.