Question about 1995 Audi A6

7 Answers

Air in power steering system

Pressure hose replaced and after topping up with oil there still seems to be air in the system. I think the vehicle is fitted with stabilizing suspension system. Is there a bleed point to get rid of this?
model A6 1995 quattro avant 2.8 v6

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  • rob_viv Jan 23, 2009

    tried your recommendation but there is still air in the system and this seems to be moving around the car in the suspension system.

  • rob_viv Jan 24, 2009

    I have repeated this operation as you describe and it is still no better. Now I am billed for advice that is not working. Any other solutions please?

  • rob_viv Jan 24, 2009

    I suspect that the air is not only in the steering system but also in the self leveling suspension which is part of the steering hydraulic system. No matter what I do with the steering system it doesn't seem to get rid of the air in any way.

  • rob_viv Jan 24, 2009

    I have checked that the seals are all good.

  • rob_viv Jan 24, 2009

    this model has a servotronic power steering system and a self-leveling suspension system. the brakes are totally isolated from this system.

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The power steering system utilizes hydraulic fluid to transfer force from the power steering pump, the rack and pinion or steering box, without fluid the system cannot function. Check the power steering fluid level by locating the power steering fluid reservoir and remove the cap (twist counter clockwise). Most systems have a fluid level dip stick mounted inside the cap. If the fluid level is down or there is no fluid in the reservoir the system has a leak. Inspect the entire power steering system: pump, hoses and rack and pinion or box assembly, replace worn or broken components as needed. Refill system with manufacturers recommended fluids then start engine (hands away from engine) and turn steering from lock to lock several times. Shut the engine off and recheck fluid level, allow system to stand for a period of time to allow air in the fluid (aeration) to dissipate. Check fluid level and re-top as needed.

Posted on Jan 24, 2009

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There are bleeder screws on the rack and pinion,and steering box.
You will need a small hose about 10" long and a container with steering fluid in it.
Attach the hose to the bleeder and place the other end in the fluid and make sure the end stays under the surface,start the car,turn and hold the steering wheel all the way to one side,turn the car off.Tighten bleeder,move to the other bleeder and do the same,turning the wheel in the oposite direction.you may need to do this more than once to remove all the air.once completed,start the car and turn the wheel all the way in each direction until you feel it pushing back.Add any needed fluid.


air in power steering system - d14acaa.jpg

Posted on Jan 24, 2009

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You can try this ,run the engine and turn the steering wheel all the way to the left and then the right .Then let the vehicle sit for 15 min with engine off ,some times the air will rise to the top .There is also the posibility that the pressure hose is letting air in so also check the system connections are tight and is sealing.

Posted on Jan 24, 2009

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Welcome to Fixya! If it is inside the Suspension System it is Probably in the Brakes. Have you had any soft Brakes at any Time????

Posted on Jan 23, 2009

  • Travis Humphries
    Travis Humphries Jan 23, 2009

    If you have an air Pump on Board for the air ride. Try deflating the System and Reinflating to release the Pockets.

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Hi!

To bleed out any air, start the engine and turn the steering wheel fully from side to side. Keep checking the fluid and add as needed. This will force the air into the reservoir and out of the system.

Thanks

Posted on Jan 20, 2009

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What I've always done is with the power steering cap off, and the motor running I slowly turn the wheel all the way from side to side holding for a moment at each side, this will let the air in the system come up through the lines and out the cap. This will take a while and you will need one person to steer and one to watch for the bubbles to stop.

I hope this helps,

Thanks for using FixYa,

Eric

Posted on Jan 20, 2009

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No bleeder fitting - loosen the hose, and turn the wheel, when fluid comes out, the air is gone. Tighten the fitting back up.
Just like brakes.

Posted on Jan 20, 2009

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1. Place a drain pan under the vehicle.
2. Remove the accessory drive belt.
3. Raise and support the vehicle. Refer to Vehicle Lifting.
4. Remove the tire and wheel assembly.
5. The power steering pressure hose is the lower hose at the power steering gear.
Remove the power steering pressure hose from the power steering gear.
6. Remove the power steering pressure hose from the power steering pump.
7. Remove the power steering pressure hose from the clamps on the power steering gear.
8. Remove the power steering pressure hose from the vehicle.
Installation Procedure
1. Install the power steering pressure hose to the vehicle.
2. Install the power steering pressure hose to the clamps on the power steering gear.
Notice: Refer to Fastener Notice in Service Precautions.
3. Install the power steering pressure hose to the power steering pump.
^ Tighten the fitting to 27 Nm (20 ft. lbs.).
4. Install the power steering pressure hose to the power steering gear.
^ Tighten the pressure hose fitting to 27 Nm (20 ft. lbs.).
5. Install the tire and wheel assembly.
6. Remove the drain pan from under the vehicle.
7. Lower the vehicle.
8. Install the accessory drive belt.
9. Fill the power steering system with power steering fluid.
10. Bleed the power steering system.
11. Inspect the power steering system for leaks.

00d203e.jpg

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2 Answers

My power steering pressure hose has a leak.


i pERSONALY WOULD REPLACE IT MYSELF EVEN WITHOUT MY 30yrs Of Experience in this Field. I have Enclosed Instructions for you to use. PLEASE dont Forget to RATE me As MOST folks DONT remember to that is how WE Get our Ratings such as GURU THANK YOU and Good Luck On The Job, Dont PAY a dime If YOU CAN > D I Y

REMOVAL PROCEDURE
  1. Remove the power steering pressure hose (2) from the power steering pump (1).
  2. Raise the vehicle on a hoist. Refer to Vehicle Lifting.
  3. Remove the front exhaust pipe, automatic transmission only. Refer to Intermediate Pipe Replacement in Exhaust System
  4. Remove the power steering pressure hose (1) from the power steering gear (3).
  5. Remove the power steering hose retainer (2).
  6. Remove the power steering pressure hose (1) from the vehicle
    1. Install the power steering pressure hose (1) to the vehicle
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    3. Install the power steering pressure hose (1) to the power steering gear (3). Tighten the fitting to 27 Nm (20 ft. lbs.).
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