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Home >> Mercedes Benz >> 2023 >> CLA250 Base >> Repair and Diagnosis >> Suspension >> Front Suspension >> Front Axle -- 118 Chassis >> Testing & Repair >> Remove/Install Front Axle Lower Wishbone - AR33.20-P-0510MFA

Remove/Install Front Axle Lower Wishbone - AR33.20-P-0510MFA

Model 118, 177, 243, 247 

MODIFICATION NOTES

02.08.2022 Remove oil sensor. Operation step 3.  
08.05.2022 Screw, transverse control arm to front axle carrier Model 118, 177, 247 BA33.15-P-1001-01F
08.05.2022 Screw, transverse control arm to front axle carrier Model 243 BA33.15-P-1001-01F
10.10.2023 Screw, transverse control arm to front axle carrier Model 118, 177, 247 BA33.15-P-1001-01F
16.10.2023 Screw, transverse control arm to front axle carrier Model 243 BA33.15-P-1001-01F
Fig 1: Front Axle Lower Wishbone/Transverse Control Arm Components Location - Model 118 (Shown On Model 177)
G16140767Courtesy of MERCEDES-BENZ USA

Shown on model 177 on left side of vehicle 

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
WARNING Risk of injury.  Skin or eye injuries may result when handling hot or glowing objects. Wear protective gloves, protective clothing and safety glasses, if necessary. AS00.00-Z-0002-01A
CAUTION Risk of injury  caused by scraping or cutting body parts on sharp vehicle parts Always wear protective gloves when working on or near sharp and non-deburred vehicle parts.
Deburr repair panels.
AS00.00-Z-0017-01A
Notice  Notes on threaded connections fastened using a tightening angle-based tightening process   AH00.00-P-0020-01A
Notice  Notes on self-locking nuts and bolts   AH00.00-P-0001-01KOA
  Notes on safety-relevant components   AH00.00-Z-0019-01A
  Notes on repair work on suspension components   AH00.00-P-0100-01A
REMOVINGINSTALLING Remove/install     
1 Remove corresponding wheel and tire assembly.   AR40.10-P-1102MFA
2 Remove bottom engine compartment paneling. Model 243 AR61.20-P-1105EQA
    Model 118, 177, 247 with engine 608, 654 AR61.20-P-1105MFE
    Model 118, 177, 247 with engine 260 except code M016 (Uprated engine) Model 118, 177, 247 with engine 282 AR61.20-P-1105MFA
    Model 118, 177, 247 with engine 260 with code M016 (Uprated engine) Model 118, 177, 247.7 with engine 139 AR61.20-P-1105MFR
3 Remove oil sensor. Model 118, 177, 247 with engine 282
When removing the right transverse control arm
(1).
 
      AR18.40-P-5112MFD
4 Remove rear section of front fender liner. Model 118, 177, 247 AR88.10-P-1301MFA
    Model 243 AR88.10-P-1301EQA
5 Remove nut (3) and unhook torsion bar linkage. NOTES
Counterhold the ball head and do not use an
impact wrench/driver.
Otherwise the ball head gets damaged.
 
    TORQUE SPECIFICATION Nut, torsion bar linkage to suspension strut/stabilizer bar *BA32.35-P-1002-02A 
6 Unclip retaining clip (6) from left front level sensor (B22/8) or right front level sensor (B22/9). Model 118, 177, 247
with code 459 (Steel suspension with adjustable damping)
with code 640 (SAE dynamic LED headlamps, right-hand traffic) Model 118, 177, 247
with code 459 (Steel suspension with adjustable damping)
with code 641 (Dynamic LED headlamps, left-
hand traffic)
Model 118, 177, 247
with code 459 (Steel suspension with adjustable damping)
with code 642 (Dynamic LED headlamps, right-hand traffic)
Model 243
with code 457 (Comfort suspension with adjustable damping)
with code 631 (Static LED headlamps, left-hand
traffic)
Model 243
with code 457 (Comfort suspension with adjustable damping)
with code 632 (Headlamps, LED, static, right-side traffic)
 
7 Remove nut (4) from supporting joint.    
  Note on calculation of tightening torque when using insertion or socket tools with various effective lengths   AH00.00-P-0015-01CW
    NOTES
Counterhold the ball head and do not use an impact wrench/driver.
Otherwise, the ball head or sealing bellows (5) will be damaged.
 
    IMPORTANT Model 118, 177, 247.0
Commercially available devices/tools 
A combination wrench
 
    TORQUE SPECIFICATION Nut, supporting ball joint/transverse control arm to steering knuckle *BA33.15-P-1005-01F 
    SPECIAL TOOL Model 243
Model 247.6/7
Fig 3
    Counterholder  
    SPECIAL TOOL Model 243
Model 247.6/7
Fig 2
    Socket wrench  
8 Remove bolts (7, 8). TORQUE SPECIFICATION Screw/bolt, transverse control arm bearing to front axle carrier *BA33.15-P-1002-01F 
    TORQUE SPECIFICATION Screw/bolt, transverse control arm bearing to longitudinal member *BA33.15-P-1003-01F 
9 Remove anti-twist lock (9) at nut of screw (2).    
10 Remove bolt (2). TORQUE SPECIFICATION Screw/bolt, transverse control arm to front axle carrier *BA33.15-P-1001-01F 
11 Remove transverse control arm (1) from front axle carrier.    
INSPECT Check     
12 Check seal bellows (5) on supporting joint. If damage is found,
Replace transverse control arm (1).
 
CLEAN Clean     
13 Clean centering cone on supporting joint of transverse control arm (1). IMPORTANT There must be no oil or grease on the centering cone and on the thread.  
14 Install in the reverse order.    
MEASURING Measure     
15 Perform chassis alignment.   AR40.20-P-0200MFA
FRONT AXLE STABILIZER BAR

Number Designation Model 243 Model 118, 177, 247
BA32.35-P-1002-02A Nut, torsion bar linkage to suspension strut/stabilizer bar M12 Nm 105 105
TRAILING ARMS, TRANSVERSE CONTROL ARMS

Number Designation Model 118, 177, 247 Model 243
BA33.15-P-1001-01F Screw/bolt, transverse control arm to front axle carrier M12     - -
M14 Stage 1 Nm 120 120
Stage 2 ∠° 90 90
TRAILING ARMS, TRANSVERSE CONTROL ARMS

Number Designation Model 118, 177, 247 Model 243
BA33.15-P-1002-01F Screw/bolt, transverse control arm bearing to front axle carrier M10 Stage 1 Nm 50 50
Stage 2 ∠° 90 90
TRAILING ARMS, TRANSVERSE CONTROL ARMS

Number Designation Model 118, 177, 247 Model 243
BA33.15-P-1003-01F Screw/bolt, transverse control arm bearing to longitudinal member M10 Stage 1 Nm 60 60
Stage 2 ∠° 45 45
TRAILING ARMS, TRANSVERSE CONTROL ARMS

Number Designation Model 118, 177, 247 Model 243
BA33.15-P-1005-01F Nut, supporting ball joint/transverse control arm to steering knuckle M14 Stage 1 Nm 90 90
Stage 2 ∠° 90 90
Fig 2: Identifying Socket Wrench (247 589 00 09 00)
G16140768Courtesy of MERCEDES-BENZ USA
Fig 3: Identifying Counterholder (247 589 00 40 00)
G16140769Courtesy of MERCEDES-BENZ USA