AUDI A4 1999 B5 / 1.G Suspension Wheel Alignment User Guide

44-13
Wheel alignment specifications (all-wheel-drive vehicles)


Specifications valid for all engine versions
Front axle
Standard suspension
(1BA)
Special suspension
(1BC)
Heavy duty
suspension (1BP) Sport suspension
(1BE) Heavy duty suspension
(1BB), (1BT1))
Camber
-25 25
-40 25
-15 25
-30 25
Maximum allowable difference in camber
between two sides 30
30
30
Toe setting for each wheel (curb weight)
+10 2
+10 2
+10 2
Toe check value for each wheel (curb
weight) +10 5
+10 5
+10 5
Toe constant for each wheel (setting
value) +7 2
+7 2
+7 2
Toe constant for each wheel (check
value) +7 7
+7 7
+7 7
Toe-out on turns at 20
-1 20 30
-1 20 30
-1 20 30
1) Applies only to vehicles with heavy duty suspension (1BT)
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44-14

Rear axle
Standard
suspension (1BA)
Special suspension
(1BC)
Heavy duty
suspension (1BP) Sport
suspension
(1BE) Heavy duty suspension
(1BB), (1BT1))
Camber
-40 30
-40 30
-40 30
Maximum allowable difference in camber between
two sides 30
30
30
Overall toe
+8 5
+8 5
+8 5
Maximum allowable difference in direction of travel
relative to longitudinal vehicle center line (thrust
angle) 10
10
10
1) Applies only to vehicles with heavy duty suspension (1BT)
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44-15
Wheel alignment specifications (front-wheel-drive vehicles with aluminium mounting bracket)


Specifications valid for all engine versions
Front axle
Standard suspension
(1BA)
Special suspension
(1BC)
Heavy duty
suspension (1BP) Sport suspension
(1BE) Heavy duty suspension
(1BB), (1BT1))
Camber
-35 25
-50 25
-20 25
-30 25
Maximum allowable difference in camber
between two sides 30
30
30
Toe setting for each wheel (curb weight)
+10 2
+10 2
+10 2
Toe check value for each wheel (curb
weight) +10 5
+10 5
+10 5
Toe constant for each wheel (setting
value) +9 2
+9 2
+9 2
Toe constant for each wheel (check
value) +9 7
+9 7
+9 7
Toe-out on turns at 20
-1 20 30
-1 20 30
-1 20 30
1) Applies only to vehicles with heavy duty suspension (1BT)
Pa
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44-16
Wheel alignment specifications (all-wheel-drive vehicles with aluminium mounting bracket)


Specifications valid for all engine versions
Front axle
Standard suspension
(1BA)
Special suspension
(1BC)
Heavy duty
suspension (1BP) Sport suspension
(1BE) Heavy duty suspension
(1BB), (1BT1))
Camber
-35 25
-50 25
-20 25
-30 25
Maximum allowable difference in camber
between two sides 30
30
30
Toe setting for each wheel (curb weight)
+10 2
+10 2
+10 2
Toe check value for each wheel (curb
weight) +10 5
+10 5
+10 5
Toe constant for each wheel (setting
value) +9 2
+9 2
+9 2
Toe constant for each wheel (check
value) +9 7
+9 7
+9 7
Toe-out on turns at 20
-1 20 30
-1 20 30
-1 20 30
1) Applies only to vehicles with heavy duty suspension (1BT)
Pa
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44-17
Wheel alignment specifications, sport suspension (1BD)

Front axle
Sport suspension
(1BD)
Camber
-50 25 Maximum allowable difference in camber between two sides
30 Toe setting for each wheel (curb weight)
+10 2 Toe check value for each wheel (curb weight)
+10 5 Toe constant for each wheel (setting value)
+7 2 Toe constant for each wheel (check value)
+7 7 Toe-out on turns at 20
-1 30 30

Rear axle
Sport suspension
(1BD)
Camber
-55 15
Maximum allowable difference in camber between two sides
30 Overall toe
+8 5 Maximum allowable difference in direction of travel relative to longitudinal vehicle center line
(thrust angle) 10
Pa
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44-18

Wheel alignment, preparations for
checking


Special tools, test requirements and auxiliary
items

VAG1907 VAG1941 VAG1925
VAG1925/3 VAG1925/4 VAG1925/6
Electronic alignment unit; e.g. VAG1813

- Carry out wheel run-out compensation.

Note:
On accident damaged vehicles, use special tool VAG1907 to make
certain that the rack is in the center position. - Install brake pedal depressor.
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44-19

Wheel alignment, mandatory sequence
of operations for checking


Overview of sequence of operations for
measuring wheel alignment

Vehicle must only be measured at curb
weight

Note:
Exception: when measuring the toe-in curve as
described in the alignment program instructions.

The following work sequences must be
adhered to

1 - Check front axle camber centering and
adjust if necessary page 44
-24
.

2 - Check rear axle camber and adjust if
necessary:

FWD vehicles page 44
-20

AWD vehicles page 44
-22

3 - Check rear axle and adjust if necessary:
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FWD vehicles page 44
-21

AWD vehicles page 44
-23

4 - If necessary, check toe-in curve on front
axle.

To determine if the toe-in curve or toe
constant "S" needs adjusting table on
page 44
-10
and also page Page 44
-27
.

5 - Check front axle toe with vehicle at curb
weight and adjust if necessary page 44
-38
.
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44-20

Rear axle camber (front-wheel-drive
vehicles), checking

Wheel alignment specifications page 44
-11
.
The rear axle camber can be checked but not
adjusted on vehicles with front wheel drive.
If the readings are outside the allowable
tolerances the axle beam must be checked for
damage and replaced if necessary.
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44-21

Rear axle toe (front-wheel-drive
vehicles), centering

Individual toe settings on the rear axle cannot be
adjusted.
By moving the rear axle within the elongated
holes it is possible to center the individual toe
settings.

- Loosen securing bolts on mounting brackets.

- Center individual toe settings by moving axle
beam within elongated holes at mounting
brackets.
If the overall toe setting is outside the allowable
tolerance, or if it is not possible to center the
individual settings, the axle beam must be
checked for damage and replaced if necessary.
The body alignment must also be
checked/measured in the area of the rear axle
mounting points and serviced as necessary.
Repair Manual, Body Collision Repair
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