Perform wheel alignment check

AR40.20-P-0200FR

Perform wheel alignment check

29.11.2018

Model

257

Modification notes

15.10.2018

Select drive program "Sport", added.

Operation step 11

01

Quick clamping device



Check

1

Check condition of vehicle.

 For the wheel alignment measurement, all the vehicle parts must be installed and the vehicle must be fully assembled and ready to drive. Do not load the vehicle. The specified values for the vehicle are provided based on the actual values determined by the dimensional check system.
The specified tolerances of vehicle specified values are only for the test. If the vehicle is adjusted, the specified values should be aimed for.

2

Check condition and tire tread depth of tires.



AP40.10-P-4052B

3

Check rims for damage.

4

Check and correct tire pressure.



AP40.15-P-4061A

5

Check vehicle underside for damage and corrosion of suspension, chassis and load-bearing body parts.



AP60.00-P-0051I

6

Check condition of the steering mechanism.



AP46.00-P-4651A

7

Check front axle joints for play and check dust boots for damage.



AP33.10-P-3358A

8

Check rear axle joints for play and check dust boots for damage.



AP35.20-P-3552A

9

Check condition of shock absorbers and springs.



AP32.25-P-3255A

Preparatory tasks

10

Print out form for wheel alignment measurement.

If necessary when an optical chassis alignment is carried out.



Wheel Alignment Form

OF40.20-P-3000-01B

11

Select drive program "Sport".

Model 257 with engine 256
with code M005 (4MATIC)
with code M016 (Uprated engine)

12

Drive the vehicle onto measuring station and secure using parking brake.

13

Unlock turn and slip plates.

14.1

Raise vehicle level and lower again.

Model 257
with code 489 (AIR BODY CONTROL)

14.2

Rock vehicle to settle suspension on front and rear axle several times.

Model 257
except code 489 (AIR BODY CONTROL)

15

Switch off easy entry and exit feature.

Model 257
with code 275 (Memory package)

16

Lower window of driver's door.

17

Install the brake pedal jack with the adapter for brake pedal jack between the brake pedal and the driver's seat.


Protect contact surfaces of  brake pedal jack with  adapter for brake pedal jack on brake pedal and on driver's seat.
Otherwise, the brake pedal and driver's seat may be damaged.

 The vehicle must not be loaded again during the remaining work procedure.

 Brake pedal jack

*000589183100

 Adapter for brake pedal winch

*211589003100

18

Determine vehicle level at front and rear axle using electronic inclinometer.

AR40.20-P-0301FR

19

Attach quick clamping devices (01) to front and rear wheels and remove tensioning levers.

 The mount is centered relative to the wheel hub or rear axle shaft flange by check pins via the five mounting holes in the rim.

 Quick clamping device

*124589013100

20

Attach wheel mirrors or measurement pickups.

21

Attach measuring heads.



Measure

22

Carry out input measurement.

23

Compare determined values with the specified values.

AR40.20-P-0203FR

 The camber of the rear axle and the toe-out angle are not adjustable.

Adjust

24

Adjust toe on rear axle.

According to results of initial measurement.

AR40.20-P-0261FR

25

Adjust caster on front axle.

According to results of initial measurement.

AR40.20-P-0270FR

26

Adjust camber on front axle.

According to results of initial measurement.

AR40.20-P-0266FR

27

Adjust toe on front axle.

According to results of initial measurement.

AR40.20-P-0264FR



Measure

28

Carry out output measurement.

Concluding tasks

29

Detach measuring heads.

30

Detach wheel mirrors or measurement pickups.

31

Attach tensioning levers and detach quick clamping devices (01).

32

Remove brake pedal jack with adapter for brake pedal jack.

33

Lock turn and slip plates.

34

Drive vehicle off measuring system.

35

Switch on easy entry and exit feature.

Model 257
with code 275 (Memory package)

36

Check headlamp adjustment.



AP82.10-P-8260L