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Home >> Mercedes Benz >> 2022 >> CLS450 >> Repair and Diagnosis >> Suspension >> Wheels & Tire System >> Wheels, Chassis Alignment Check - 257 Chassis >> Testing & Repair >> Perform Wheel Alignment Check - AR40.20-P-0200FR

Perform Wheel Alignment Check - AR40.20-P-0200FR

Model 257 

MODIFICATION NOTES

15.10.2018 Select drive program "Sport", added. Operation step 11  
G14548803Courtesy of MERCEDES-BENZ USA
INSPECT Check     
1 Check condition of vehicle. IMPORTANT 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.    
REFER TO MAINTENANCE     AP40.10-P-4052B 
3 Check rims for damage.    
4 Check and correct tire pressure.    
REFER TO MAINTENANCE     AP40.15-P-4061A 
5 Check vehicle underside for damage and corrosion of suspension, chassis and load-bearing body parts.    
REFER TO MAINTENANCE     AP60.00-P-00511
6 Check condition of the steering mechanism.    
REFER TO MAINTENANCE     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.    
REFER TO MAINTENANCE     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.  
REFER TO FORMS 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. NOTES
Protect contact surfaces of SPECIAL TOOL brake pedal jack with SPECIAL TOOL adapter for brake pedal jack on brake pedal and on driver's seat.
Otherwise, the brake pedal and driver's seat may be damaged.
IMPORTANT The vehicle must not be loaded again during the remaining work procedure.
 
    SPECIAL TOOL Brake pedal jack Fig 1
    SPECIAL TOOL Adapter for brake pedal winch Fig 2
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 IMPORTANT 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.  
    SPECIAL TOOL Quick clamping device Fig 3
20 Attach wheel mirrors or measurement pickups    
21 Attach measuring heads.    
MEASURING Measure     
22 Carry out input measurement.    
23 Compare determined values with the specified values.   AR40.20-P-0203FR 
    IMPORTANT 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 
MEASURING 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.    
REFER TO MAINTENANCE     AP82.10-P-8260L
Fig 1: Identifying Brake Pedal Jack (000 589 18 31 00)
G14548804Courtesy of MERCEDES-BENZ USA
Fig 2: Identifying Adapter For Brake Pedal Wind (211 589 00 31 00)
G14548805Courtesy of MERCEDES-BENZ USA
Fig 3: Identifying Quick Clamping Device (124 589 01 31 00)
G14548806Courtesy of MERCEDES-BENZ USA