Wheel Bearing At Standard Vehicle Height, Lifting Vehicles With Air Suspension

Special tools and workshop equipment required

Engine and Gearbox Jack: VAS6931
Tensioning Strap: T10038
Engine/Gearbox Jack Adapter - Wheel Hub Support: T10149

All bolts on chassis components with bonded rubber bushings must be tightened at the normal vehicle level. Refer to STANDARD VEHICLE HEIGHT FOR AXLE ALIGNMENT ON VEHICLES WITH AIR SUSPENSION, CHECKING .

Bonded rubber bushings have a limited range of rotation. Axle components with bonded rubber bushings must be brought into the position they will be in when driving before they are tightened (standard vehicle height).
Otherwise, the bonded rubber bushing will have tension, which will reduce the service life.
By raising the corresponding suspension using the : VAS6931 and : T10149 , this position can be simulated on the hoist.

Procedure

Fig 1: Determining Height Dimension -a-

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-- Before starting the procedure, determine the measurement -a-, for example using a tape measure, from the center of the wheel to the lower edge of the fender/wheel housing.

TIP:

The dimension -a- = the standard vehicle height is dependent on the suspension installed. Refer to STANDARD VEHICLE HEIGHT FOR AXLE ALIGNMENT ON VEHICLES WITH AIR SUSPENSION, CHECKING .
The measurement must take place at standard vehicle height. Refer to TEST REQUIREMENTS, AUDI Q7 - Vehicles with air suspension .

Front Axle

-- Lightly secure both sides of the vehicle to the hoist lifting arms -arrow- using : T10038 on the upper rear control arm mounts -arrow A-.

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CAUTION:

Vehicle Slipping from the Hoist

- Secure the vehicle on the hoist

Rear Axle

-- Secure both sides of the vehicle to the hoist lifting arms -arrow B- to the strikers on the rear doors -arrow A- using : T10038 .

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CAUTION:

Vehicle Slipping from the Hoist

- Secure the vehicle on the hoist

Continuation for Both Axles

-- Note the measurement. This will be needed when tightening the bolts/nuts.

-- Remove the wheel. Refer to WHEELS AND TIRES .

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-- Turn the wheel hub, until a wheel bolt hole is at the top.

CAUTION:

Risk of Destroying the Wheel Bearing When Installing the Wheel Bolt.

- Install a washer on the wheel bolt so that the wheel bolt does not press again the wheel bearing.

-- Install the : T10149 with a wheel bolt -2- and inserted washer -1- on the wheel hub.

Tightening of the applicable bolts/nuts must only occur if the dimension between the center of the wheel hub and the lower edge of the fender/wheel housing that was measured before starting the procedure has been attained.

-- Insert the : T10149 -1- in the : VAS6931 and lift the wheel bearing housing until the dimension -a- is reached.

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CAUTION:

There Is a Risk of an Accident When Lowering the Vehicle When the Engine and Gearbox Jack Is Underneath It.

- Never lower the vehicle when the engine and gearbox jack is underneath it.

- Never leave the engine and gearbox jack under the vehicle any longer than necessary.

-- Tighten the applicable bolts and nuts.

-- Lower the wheel bearing housing.

-- Move the : VAS6931 to the side

-- Remove the : T10149 .

-- Fill the air suspension system. Refer to AIR SUSPENSION SYSTEM, FILLING AND BLEEDING .

The vehicle may be removed from the vehicle hoist only after the air springs have been filled again.