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Home >> Mercedes Benz >> 2014 >> SL550 >> Repair and Diagnosis >> Suspension >> Wheels & Tire System >> Wheels, Chassis Alignment Check - 231 Chassis >> Testing & Repair >> Adjust camber and caster at the front axle - AR40.20-P-0263RK

Adjust camber and caster at the front axle - AR40.20-P-0263RK

MODEL 231 

Camber, shown on vehicle with code (487) Active Body Control (ABC) 

Fig 1: Adjusting Camber At Front Axle - Shown On Vehicle With Code (487)
G11128832Courtesy of MERCEDES-BENZ USA

Caster, shown on vehicle with code (487) Active Body Control (ABC) 

Fig 2: Adjusting Caster At Front Axle - Shown On Vehicle With Code (487)
G11128833Courtesy of MERCEDES-BENZ USA
  Adjust     
1 For caster correction, install repair bolt (19c)   AR40.20-P-0322-01RK
    IMPORTANT Screw on the repair kit nut (19b) until it abuts, but do not tighten yet so that the elastomer bearing of the strut rod (18) can twist when the vehicle is rocked to settle the suspension.
Caster alteration at strut rod + 4 mm
*BE40.20-P-1001-22A 
    Camber alteration at strut rod + 4 mm *BE40.20-P-1002-22A 
    Caster alteration at strut rod - 4 mm *BE40.20-P-1003-22A 
    Camber alteration at strut rod - 4 mm *BE40.20-P-1004-22A 
2 Remove/install spring control arm (17) at front axle Only required in the case of camber correction.
Remove/install spring control arm on front axle
AR33.15-P-0170RK
3 Install repair bearing (16) for camber correction Only required in the case of camber correction.
Insertion/extraction of the rubber bushing on the track control arm
AR33.15-P-0170-02RK
    SPECIAL TOOL Press-in tool Fig 4
    SPECIAL TOOL Extraction and insertion tool Fig 3
4 Adjust camber Only required in the case of camber correction.
IMPORTANT Only three specified levels of the vehicle incl. tolerances are shown in the displayed basic data. Dependent on the measured level, if the vehicle is in the tolerance range, this measurement is OK.
Camber at vehicle level
*BE40.20-P-1001-13V 
    Permissible difference in front axle camber between right and left sides of the vehicle *BE40.20-P-1004-13V 
5 Adjusting caster Only required in the case of caster correction. AR40.20-P-0322-03RK
    Caster values, form *BE40.20-P-1001-20E 
    Permissible difference in caster between right and left side of vehicle *BE40.20-P-1002-20E 
    Absolute caster tolerance *BE40.20-P-1003-20E 
6 Check vehicle level again at the front axle after the camber adjustment and caster adjustment Check vehicle level at front and rear axle with electronic inclinometer, adjust if necessary
IMPORTANT The vehicle level must match the values determined during the initial measurement.
AR40.20-P-0301RK 
7 Tighten repair kit nut (19b) securely. NOTES
Do not turn the repair bolt (19c) any more after it has been fixed in place.
The lock tabs in the elastomer bearing of the strut rod (18) will otherwise be sheared off.
IMPORTANT When tightening the repair kit nut (19b), counterhold the repair bolt (19c).
TORQUE SPECIFICATION Bolt, strut rod to front axle carrier
*BA33.20-P-1004-01S 
TEST AND ADJUSTMENT VALUES FOR FRONT AXLE CAMBER

Number Designation Model 231 except code 486/487 Model 231 with code 486
BE40.20-P-1001-13V Camber at vehicle level -1.07° ∠° - -
-0.74° ∠° - -1° 26' (±21')
-0.58° ∠° - -
-0.41° ∠° - -
+0.24° ∠° - -
+0.57° ∠° - -1° 13' (±21')
+0.73° ∠° - -
+1.06° ∠° -1° 8' (±21') -
+1.87° ∠° - -1° 1' (±21')
+2.04° ∠° - -
+2.36° ∠° -0° 56' (±21') -
+3.67° ∠° -0° 44' (±21') -
TEST AND ADJUSTMENT VALUES FOR FRONT AXLE CAMBER

Number Designation Model 231 with code 487 Model 231 AMG
BE40.20-P-1001-13V Camber at vehicle level -1.07° ∠° - -1° 59' (±19')
-0.74° ∠° - -
-0.58° ∠° -1° 24' (±21') -
-0.41° ∠° - -1° 53' (±19')
+0.24° ∠° - -1° 47' (±19')
+0.57° ∠° - -
+0.73° ∠° -1° 12' (±21') -
+1.06° ∠° - -
+1.87° ∠° - -
+2.04° ∠° -0° 59' (±21') -
+2.36° ∠° - -
+3.67° ∠° - -
TEST AND ADJUSTMENT VALUES FOR CASTER

Number Designation MODEL 231
BE40.20-P-1001-20E Caster values, form  
See OF40.20-P-3000-00RK
CAMBER AND CASTER ADJUSTMENTS

Number Designation MODEL 231
BE40.20-P-1001-22A Caster alteration at strut rod + 4 mm Spring guidance in mm ± 0 -48'
+ 3 -42'
- 3 -54'
TEST AND ADJUSTMENT VALUES FOR CASTER

Number Designation MODEL 231
BE40.20-P-1002-20E Permissible difference in caster between right and left side of vehicle ∠° ± 30'
CAMBER AND CASTER ADJUSTMENTS

Number Designation MODEL 231
BE40.20-P-1002-22A Camber alteration at strut rod + 4 mm Spring guidance in mm ± 0 -7'
+ 3 -54'
- 3 +36'
TEST AND ADJUSTMENT VALUES FOR CASTER

Number Designation MODEL 231
BE40.20-P-1003-20E Absolute caster tolerance ∠° ± 30'
CAMBER AND CASTER ADJUSTMENTS

Number Designation MODEL 231
BE40.20-P-1003-22A
 
 
Caster alteration at strut rod - 4 mm Spring guidance in mm ± 0 +48'
+ 3 +54'
- 3 +39'
TEST AND ADJUSTMENT VALUES FOR FRONT AXLE CAMBER

Number Designation Model 231 except code 486/487 Model 231 with code 486
BE40.20-P-1004-13V Permissible difference in front axle camber between right and left side of vehicle ∠° 24' 24'
TEST AND ADJUSTMENT VALUES FOR FRONT AXLE CAMBER

Number Designation Model 231 with code 487 Model 231 AMG
BE40.20-P-1004-13V Permissible difference in front axle camber between right and left side of vehicle ∠° 24' 24'
CAMBER AND CASTER ADJUSTMENTS

Number Designation MODEL 231
BE40.20-P-1004-22A Camber alteration at strut rod - 4 mm Spring guidance in mm ± 0 +12'
+ 3 -36'
- 3 +57'
WHEEL CONTROL, HUB

Number Designation Model 231
BA33.20-P-1004-01S Bolt, strut rod to front axle carrier Stage 1 Nm 100
Stage 2 ∠° 180
Fig 3: Identifying Extraction And Insertion Tool (220 589 06 43 00)
G09976213Courtesy of MERCEDES-BENZ USA
Fig 4: Identifying Press-In Tool (211 589 00 43 00)
G07472468Courtesy of MERCEDES-BENZ USA