Check and adjust front axle toe

AR40.20-P-0323RT

Check and adjust front axle toe

17.9.07

10.3.06

Self-locking nut of tie rod on inner tie rod

Model 251

*BA46.40-P-1001-01L

17.9.07

Total toe at vehicle level

*BE40.20-P-1001-07G

Permitted difference between right and left side of vehicle for front axle toe-in.

*BE40.20-P-1002-07G



Notes on self-locking nuts and bolts

All models

AH00.00-N-0001-01A



Measure

1

Measure vehicle level at the front and rear axle

AR40.20-P-0301RT

2

Carrying initial measurement of wheel alignment

AR40.20-P-0200RT



Checking

3

Compare specified value of front axle toe with the result of wheel alignment

Toe at vehicle level

*BE40.20-P-1001-07G

Permissible difference in front axle toe between the left and right side of the vehicle

*BE40.20-P-1002-07G

 If substantial deviations in the total toe are found, the cause may be one of the following:

 Too large a difference in vehicle level between the left and right side of the vehicle,

 Deformation of steering parts or tie rods e.g. through damage due to an accident,

 Deformation of front axle carrier or of chassis parts, e.g. through damage due to an accident,

 Deformation of the body, e.g. due to accident damage.

 Check for unacceptable deformations on the body, see: 

Check accident vehicles and vehicles possibly damaged in an accident.

AR40.30-P-0400RT

Adjust toe

4.1

Deactivate easy entry/exit

 Otherwise, move driver seat and steering wheel to a different position, e.g. if the driver door is opened/closed. Damage to the upper frame can occur when the holding device (2) is installed.

AR54.30-P-1000-02RT

 Only on vehicles with memory package (driver seat, steering column, mirrors), code 275.

5

Move steering wheel all the way up and all the way out

 so that the retainer (2) can be installed correctly.

 The lever for steering wheel adjustment is on the left below the steering wheel, see operating instructions.

6

Fix the steering wheel in the center position using the retainer (2).

 The steering wheel must not be adjusted anymore after installing the retainer (2).

 Retainer

*129589012100

7

Check center position of steering gear and steering wheel

8

Install wheel spreader (3)

 Insert the wheel spreader (3) at the front viewed in the direction of travel on the inside (arrows A) of the front wheels (4)

 The elastic bearings of the spring control arms, torque struts and steering linkage produce a correspondingly large toe measurement which decreases to the correct value under driving conditions.

Wheel spreader

9

Loosen jam nut on both sides of the vehicle, adjust toe by twisting the inner tie rods at the hexagon

 Loosen the hose clamp at the outer end of the bellows before twisting the inner tie rod otherwise this can be destroyed.

 Use a suitable open end wrench to counterhold the outer tie rod.

Total toe at vehicle level

*BE40.20-P-1001-07G

Permitted difference between right and left side of vehicle for front axle toe-in.

*BE40.20-P-1002-07G

10

Tighten the jam nut on both sides of the vehicle

 Use a suitable open end wrench to counterhold the outer tie rod.



*BA46.40-P-1001-01L

11

Remove wheel spreader (3)

Wheel spreader

12

Remove retainer (2)

 Retainer

*129589012100

13

Move the steering wheel into its original position again

14.1

Activate easy entry/exit

 On vehicles with memory package (driver seat, steering column, mirrors), code 275.



Measure

15.1

Carrying final measurement of wheel alignment

 Only if the toe was adjusted.

AR40.20-P-0200RT

Number

Designation

Model
251

BE40.20-P-1001-07G

Total toe at vehicle level

+7.00°

°

0° 50'(7')

+6.00°

°

0° 43'(7')

+5.00°

°

0° 37'(7')

+4.00°

°

0° 32'(7')

+3.00°

°

0° 26'(7')

+2.00°

°

0° 22'(7')

+1.00°

°

0° 17'(7')

0.00°

°

0° 15'(7')

-1.00°

°

0° 11'(7')

BE40.20-P-1002-07G

Permitted difference between right and left side of vehicle for front axle toe-in.

°

4'

Number

Designation

Model 251

BA46.40-P-1001-01L

Self-locking nut of tie rod on inner tie rod

Nm

100