A6 Quattro Sedan V8-4.2L (BVJ) (2007)
/Page-4973001.png)
Power Steering Bleeding: Service and Repair
Steering System, Bleeding after Reconstructing
After steering system reconstruction, system must be bled differently depending on extent of reconstruction.
Bleed after replacing entire steering system or replacing steering gear:
-
Fill reservoir completely.
Applies to the 10-cylinder TFSI
‹› On the 10-cylinder TFSI engine, the reservoir consists of 2 chambers which are separated from each other by a screen. To prevent an incorrect
filling, wait a few minutes each time after the reservoir is filled or drained so that the fluid in the 2 chambers has time to equalize.
Affects all vehicles
-
Raise the vehicle until all the wheels are off the ground.
‹› Engine switched off
-
Turn steering wheel from lock to lock 10 times, with engine switched off.
-
Fill the reservoir completely.
-
Briefly start engine (max. 2 seconds).
Pump must not draw in any air. Steering wheel must not be turned under any circumstances.
Wait approximately 30 sec. between individual engine starts.
-
Inspect hydraulic oil level and top off as needed.
-
Repeat this process until oil level remains constant.
-
Turn steering wheel from lock to lock 10 times, with engine switched off.
-
Inspect hydraulic oil level and top off as needed.
-
Start engine.
-
Turn steering wheel 10 times from stop to stop.
-
Inspect hydraulic oil level and top off as needed.
Any air remaining in the steering system will dissipate by itself when driving over the next 10 to 20 km.
Bleed after reconstructing component of the steering system besides the steering gear (pump, hoses, etc.):
-
Check hydraulic fluid level and top off, if necessary. Refer to => [ Power Steering Oil Level, All Engines Except 10-Cylinder TFSI, Checking ]
See: Testing and Inspection/Power Steering Oil Level, All Engines Except 10-Cylinder TFSI, Checking or => [ Power Steering Oil Level,
Checking ] See: Testing and Inspection/Power Steering Oil Level, Checking.
Applies to the 10-cylinder TFSI
‹› On the 10-cylinder TFSI engine, the reservoir consists of 2 chambers which are separated from each other by a screen. To prevent an incorrect
filling, wait a few minutes each time after the reservoir is filled or drained so that the fluid in the 2 chambers has time to equalize.
Affects all vehicles
-
Briefly start engine (max. 2 seconds).
Pump must not draw in any air and steering wheel must not be turned under any circumstances.
Wait approximately 30 sec. between individual engine starts.