Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSAUDI1998A8 SEDAN (4D2) V8-3.7L (AEW)REPAIR AND DIAGNOSISMAINTENANCEALIGNMENTSERVICE AND REPAIRTOE CONSTANT "S", ADJUSTING
1998 Audi A8 Sedan (4D2) V8-3.7L (AEW)
Toe Constant "S", Adjusting
1998 Audi A8 Sedan (4D2) V8-3.7L (AEW)SECTION Toe Constant "S", Adjusting
Toe Constant "S", Adjusting
^ Loosen nut -A-.
^ Unscrew bolt -B- approximately 4 mm.
^ Push tie rod joint downward onto stop.
^ Screw in adjustment bolt -B- until the exact specification is achieved.
^ Tighten hex nut -A- to 50 Nm (37 ft. lbs.) and check value.
Always use new hex nuts!
^ Tighten bolt -B- to 7 Nm (62 inch lbs.).
^ Lower vehicle to defined starting position B1 again.
^ Screw threaded spindle down.
Not valid for vehicles with sport suspension'
^ Bounce suspension several times (vehicles with standard suspension).
Checking toe constant after adjusting
The alignment unit checks the toe constant again.
If the second check shows that the values are within the check value tolerance, the setting is OK.
If the measured values are outside the control value tolerance, the setting must be adjusted again in lifted position.
Note: For wheel bearing housing without a groove and a tie rod end with a ring, the upward adjustment travel is about 2 mm less. If the adjustment travel is not sufficient, then the ring on the tie rod end should be removed.
Replacing setting screw on right
1 - Self-locking nut, 50 Nm (37 ft. lbs.)
^ Always replace
2 - Bolt with washer
^ For adjusting toe-in curve
3 - Bolt
4 - Protective cap
^ Always replace
^ Nut -11- must always be tightened, as otherwise toe constant "S" will change.
^ Once toe constant "S" has been set, remove bolt with washer -2- on right side of vehicle.
^ Fill tapped hole with grease and press in protective cap -4-.
RENDER: 1.0x
NO RELATED
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- β’ You smell fuel, burning insulation, or see smoke.
- β’ Brakes feel soft, pull hard to one side, or make grinding noises.
- β’ The engine overheats, stalls repeatedly, or misfires under load.
- β’ You are missing required tools, torque specs, or safe lifting equipment.
- β’ You are not confident in the next step or safety outcome.