Audi A4: General Information
Chassis
Steering
Tire Types
For general information on wheel/tire combinations, winter tires, snow chains, and recommended tire manufacturers, refer to →Wheel and Tire Guide; Rep. Gr.44
Drive Axle General Information
Apply a thin coat of assembly paste to the splines on the outer joint before installing the outer joint in the wheel hub. Refer to the Parts Catalog.
Do not let the drive axle hang down during assembly work, since the inner joint could be damaged if it is bent too far.
The wheel bearing must not be under load when the drive axle threaded connection on the wheel side is loose.
If the wheel bearings are under the load of the vehicle weight, the wheel bearing will be damaged. This reduces the service life of the wheel bearings. Note the following:
- Procedure for loosening the threaded connection for the drive axle to the wheel hub. Refer to → Chapter "Drive Axle Threaded Connection, Loosening and Tightening".
Vehicles without a drive axle must not be moved, otherwise the wheel bearing will be damaged. If the vehicle must be moved, be sure to note the following:
- Install an outer joint in place of the drive axle.
- Tighten the outer joint to 200 Nm.
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Safety Precautions
Safety Precautions when Working on Vehicles with Start/Stop System
There is a risk of injury due to the engine starting
unexpectedly.
The engine can start unexpectedly on vehicles with an
activated
Shock Absorber Leaks
Vehicles with Coil Springs
Shock absorbers are frequently rejected and replaced because
of leaks. Examinations on the test stand and on the vehicle have
shown that the replacement of a large number
SEE MORE:
Pressure Gauge, Tests and Measurements
General Information
Indicators on pressure gauge
1 - Temperature scale for refrigerant R134a CF3-CH2F or
CH2F-CF3.
2 - Pressure scale
Note
Pressure is measured in different units: 1 MPa (145 psi)
corresponds to 10 bar (145 psi) positive pressure. 1 bar (14.5
psi) abso
Refrigerant Circuit Pressures Specified Values, Vehicles with Heat Pump
Note
On vehicles with a high-voltage system and heat pump (for
example on the Audi Q7 e-tron) installed in the refrigerant
circuit and electrically activated vehicles which regulate the
flow of the refrigerant in the refrigerant circuit depending on
the current operating condition. The
