General information on wheel alignment

AR40.20-S-0201E

General information on wheel alignment

04.09.2020

Model

447, 448

Modification notes

09.07.2020

Work procedure updated

Whole document.

 Danger

Risk of death caused by vehicle slipping or toppling off of the lifting platform.

Align vehicle between vehicle lift columns and position the four support plates at the vehicle lift support points specified by the vehicle manufacturer.

AS00.00-Z-0010-01A

Topical note

Notes on air suspension

Model 447, 448
with code CA4 (AIRMATIC)

AH32.22-N-1000-01E

Topical note

Information on tires / rims

AH40.10-P-9411-01A

Topical note

General information on chassis modifications

AH40.10-P-1050-02A



Check

1

Check condition of vehicle.

 For wheel alignment measurement, install all vehicle parts and reassemble vehicle so it is ready to drive. The vehicle must not be loaded. Measuring system provides vehicle specified values using determined level values. Specified tolerances of vehicle specified values are only for the test. If vehicle is adjusted, aim for specified values as much as possible.

2

Check tires for wear pattern, tire tread depth and damage.



Assess condition and tread depth of tires

AP40.10-S-4052P

3

Check condition of disk wheels.

AR40.10-P-1010-01A

4

Check tire pressure.

Tires - General information

AH40.10-N-1020-01A



Correct tire pressure, including spare wheel

AP40.15-S-4060E

If tire pressure wrong.



Correct tire pressure.

5

Check vehicle underside.



Check all visible parts of vehicle underside for damage and fluid loss

AP00.20-S-0054E

 Visual inspection for damage, corrosion of chassis parts and supporting body parts, leaks from components and lines.

 Do not yet lower vehicle completely.

6

When vehicle is raised, check wheel bearing play without dial indicator.

7

Check condition of steering mechanism component parts.



Checking condition of steering mechanism

AP46.00-S-4650E

8

Check steering gear, boots of tie rods as well as tie rods.



Check condition of steering and tie rods

AP46.00-S-4651E

9

Drive vehicle onto measuring station and secure against rolling away.

10

Unlock turn and slip plates.

11

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