Rear Final Drive
Rear Final Drive
Short Description
- Prior to removal, print out a diagnostic protocol. Send back the removed final drive with the protocol in the usual manner.
Before raising the vehicle, two holes must be made in the luggage compartment floor. The locations for drilling are marked "at the factory". These holes allow access to the final drive/subframe bolts located below.
The pendulum support is unbolted from the transmission at the front. The stabilizer bar is removed, the drive axles are disconnected from the final drive. Electrical connections and ventilation lines are disconnect from the final drive.
The rear section of the exhaust system is removed. Remove the driveshaft from the final drive, move it to the top and secure it there.
The final drive is lowered with the engine-/gearbox jack downward diagonally in the direction of travel.
Removing
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)
• Hand Drill
• Stepped Drill Bit or Cone Drill Bit
• Protective Eye wear
- Raise the floor covering in the luggage compartment.
- Remove the spare wheel.
Now, you have access to the marks - arrows - in the luggage compartment floor.
- Drill 2 holes - 1 - on the mark to 26 mm - a -. Remove any drill shavings while drilling, if possible.
- Deburr the holes and remove any shavings carefully.
Reestablish corrosion protection with the materials specified by the manufacturer. Refer to the Body Collision Repair.
- Loosen and remove both bolts - 1 -.
You must replace these bolts later.
- Lift the vehicle.
- Remove the stabilizer bar.
- Support the front exhaust pipe - A - using the tensioning strap (T10038) on the driveshaft intermediate bearing.
- Remove the exhaust pipe bracket bolt - arrow - and bracket from the subframe.
- Disconnect the exhaust system at the clamping sleeve - arrows - and remove the rear exhaust system.
- Remove the pendulum support bolts - 1 and 2 -.
In order not to damage the left rear level control system sensor:
- Disconnect the harness connector, remove the sensor - 1 - and lay it on the control arm - A -.
- Disconnect the left drive axle from the final drive.
- Remove the left drive axle - B - from the flange and carefully lower it.
- Disconnect the right drive axle from the final drive.
- Remove the right drive axle - B - from the flange and carefully lower it.
- Press the engine and transmission forward by hand and secure this position with a suitable piece of wood - A -.
So that noises due to imbalance do not occur later:
- See if there are marks (colored dots) on the driveshaft flexible disc and rear final drive input flange - arrows -. If not, mark the position of the flexible disc and input flange with respect to one another - arrows -.
- Remove the driveshaft flexible disc to input flange bolts - arrows -.
- Remove the bolt - arrow - from the front mounting bracket.
You must replace this bolt later.
- Push the final drive as far as possible to the rear.
- Remove the driveshaft flexible disc from the input flange and lay it on the tunnel brace; place a cloth on the tunnel brace to protect the driveshaft.
- Remove the washer - C - on top of the mounting bracket.
- Position the final drive in the vehicle on an angle as shown in the illustration while lowering it at the same time.
- Disconnect the harness connector - A - from the all wheel drive control module.
- Remove the vent lines - arrows - from the final drive.
- Guide the driveshaft upward and support it in this position with a suitable piece of wood on the tunnel brace - 1 -.
- Secure the final drive against falling using the strap on the universal support.
- To remove, lower the final drive more and pull it forward, while ensuring that there is sufficient clearance with respect to other components.
Installing
- Secure the final drive with the universal support strap to prevent it from falling.
- Move the final drive to the illustrated position.
- Lift the final drive, and move the rear bushings - arrows - above the subframe while ensuring sufficient clearance with respect to the other components.
- Connect the connector - A - to the all wheel drive control module.
- Slide the vent lines - arrows - onto the final drive vent tubes.
- Lift the final drive using the engine-/gearbox jack into the installed position.
To prevent damaging the driveshaft:
- Place the driveshaft on the tunnel brace, place a cloth between the shaft and brace.
- Install both drive axles.
- Tighten the drive axles.
- Attach the driveshaft flexible disc to the rear final drive input flange and tighten. Tightening specification, refer to => [ Driveshaft Overview ] Driveshaft Overview.
- Secure the pendulum support with new bolts. For the correct tightening specifications, refer to => Suspension, Wheels, Steering Specifications.
- Place the washer - C - on the front mounting bracket.
- Secure the final drive from below - B - but do not tighten the bolt yet.
- Remove the engine-/gearbox jack from under the vehicle.
- Insert two new bolts - arrow - through the holes in the luggage compartment floor and tighten them.
- Seal the holes. To do this, use the caps (N 908 572 01).
- Install the trim panel and floor covering - A -.
- Lift the vehicle.
- Tighten the final drive bolt - arrow - from below.
- Install the noise insulation.
- Install the left rear level control system sensor.
- Install the exhaust system.
- Install the stabilizer bar.
If he final drive is replaced:
- Check the oil level in the Haldex clutch. Refer to => [ Haldex Clutch Oil Level, Checking or Filling ] Haldex Clutch Oil Level, Checking or Filling.
- Check the oil level in the final drive. Refer to => [ Rear Final Drive Oil Level, Checking or Filling ] Rear Final Drive Oil Level, Checking or Filling.
Adjust the headlamps. Refer to the vehicle diagnostic tester.