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Home >> Mercedes Benz >> 2019 >> CLA250 4Matic, Gas >> Repair and Diagnosis >> Suspension >> Front Suspension >> Front Axle - 117 Chassis >> Testing & Repair >> Remove/install steering knuckle - AR33.25-P-0400NKB

Remove/install steering knuckle - AR33.25-P-0400NKB

MODEL 117, 156, 176, 242, 246 

MODIFICATION NOTES

14.11.13 Nut, tie rod to steering knuckle   BA46.40-P-1001-01O
Fig 1: Steering Knuckle Remove/Install Components (1 Of 2)
G10250426Courtesy of MERCEDES-BENZ USA
Fig 2: Steering Knuckle Remove/Install Components (2 Of 2)
G10250427Courtesy of MERCEDES-BENZ USA
NOTES Notes on self-locking nuts and bolts   AH00.00-N-0001-01A
REMOVINGINSTALLING Remove/install     
1 Remove left or right front wheel    
REFER TO MAINTENANCE     AP40.10-P-4050AK
2 Pull off hub cap (1) SPECIAL TOOL Removal and installation tool Fig 4
3 Remove bolt (2) on front axle shaft (3) INSTALLATION NOTES
The bolt (2) torque must not be exceeded. Otherwise the angular contact ball bearing will be damaged.
INSTALLATION IMPORTANT Replace bolt (2).
 
TORQUE SPECIFICATION Bolt, front axle shaft to front axle shaft flange *BA33.30-P-1001-07D 
4 Remove brake disk   AR42.10-P-0220NKB
5 Unhook electrical lines from cable duct with brake hose clip (4a)    
6 Detach cable duct with brake hose clip (4a) from suspension strut (5) IMPORTANT Pry out plastic rivets and detach cable duct with brake hose clip (4a).  
7 Detach rpm sensor on front axle at left or right with cable duct (4b) and place to one side TORQUE SPECIFICATION Bolt, rpm sensor to steering knuckle *BA42.30-P-1001-01F 
8 Detach tie rod   AR46.40-P-0200-02CW
TORQUE SPECIFICATION Nut, tie rod to steering knuckle *BA46.40-P-1001-01O 
SPECIAL TOOL Puller Figure
SPECIAL TOOL Press Figure
9 Press supporting joint (15) from steering knuckle   AR33.20-P-0440-01NKB
TORQUE SPECIFICATION Nut, supporting ball joint/transverse control arm to steering knuckle *BA33.15-P-1005-01F 
SPECIAL TOOL Press Figure
SPECIAL TOOL Puller Figure
10 Release front axle shaft (3) from front axle shaft flange (16) NOTES
Do not knock seized front axle shaft (3) out of front axle shaft flange (16).
Otherwise the angular contact ball bearing will be damaged.
If the front axle shaft (3) is difficult to remove:
 
Press front axle shaft (3) out of front axle shaft flange (16) AR33.30-P-0620-04GC
Spray Teflon, article no. K0007.1 *BR00.45-Z-1041-06A 
SPECIAL TOOL Extraction and insertion tool Fig 6
11 Unscrew nuts (6) on suspension strut (5) and remove bolts TORQUE SPECIFICATION Nut, suspension strut to steering knuckle *BA32.25-P-1003-04J 
12 Pull front axle shaft (3) out of front axle shaft flange (16) and remove steering knuckle (15) NOTES
Do not pull front axle shaft (3) too far out of the inner constant velocity joint.
Otherwise the inner constant velocity joint will be damaged.
NOTES
Do not damage rubber boot (arrow) on supporting ball joint.
Otherwise the transverse control arm has to be replaced.
 
INSPECT Check     
13 Check condition of rubber boot (arrow) on supporting ball joint    
REFER TO MAINTENANCE     AP33.20-P-3353AK 
14 Install in the reverse order    
15 Perform wheel alignment check   AR40.20-P-0200NKB
SUSPENSION STRUTS

Number Designation MODEL 117, 176, 246 MODEL 156
BA32.25-P-1003-04J Nut, suspension strut to steering knuckle Stage 1 Nm 110 110
Stage 2 ∠° 90 90
SUSPENSION STRUTS

Number Designation MODEL 242
BA32.25-P-1003-04J Nut, suspension strut to steering knuckle Stage 1 Nm 110
Stage 2 ∠° 90
TRAILING ARMS, WISHBONES

Number Designation MODEL 117 MODEL 242
BA33.15-P-1005-01F Nut, supporting ball joint/transverse control arm to steering knuckle M14 Stage 1 Nm 65 65
Stage 2 ∠° 45 45
TRAILING ARMS, WISHBONES

Number Designation MODEL 156, 176, 246
BA33.15-P-1005-01F Nut, supporting ball joint/transverse control arm to steering knuckle M14 Stage 1 Nm 65
Stage 2 ∠° 45
DRIVE SHAFT

Number Designation MODEL 117 MODEL 156
BA33.30-P-1001-07D Bolt, front axle shaft to front axle shaft flange Stage 1 Nm 120 120
Stage 2   losen Loosen
Stage 3 Nm 150 150
Stage 4 ∠° 45 45
DRIVE SHAFT

Number Designation MODEL 242 MODEL 176, 246
BA33.30-P-1001-07D Bolt, front axle shaft to front axle shaft flange Stage 1 Nm 120 120
Stage 2   losen losen
Stage 3 Nm 150 150
Stage 4 ∠° 45 45
FRONT AXLE RPM SENSOR

Number Designation MODEL 117 MODEL 156
BA42.30-P-1001-01F Bolt, rpm sensor to steering knuckle Nm 8 8
FRONT AXLE RPM SENSOR

Number Designation MODEL 176, 246 MODEL 242
BA42.30-P-1001-01F Bolt, rpm sensor to steering knuckle Nm 8 8
TIE ROD

Number Designation MODEL 117 MODEL 156
BA46.40-P-1001-01O Nut, tie rod to steering knuckle Stage 1 Nm 50 50
Stage 2 ∠° 90 90
TIE ROD

Number Designation MODEL 242 MODEL 176, 246
BA46.40-P-1001-01O Nut, tie rod to steering knuckle Stage 1 Nm 50 50
Stage 2 ∠° 90 90
Fig 3: Puller (246 589 00 33 00)
G10250402Courtesy of MERCEDES-BENZ USA
Fig 4: Removal And Installation Tool (116 589 22 33 00)
G07687746Courtesy of MERCEDES-BENZ USA
Fig 5: Puller (221 589 05 33 00)
G07300838Courtesy of MERCEDES-BENZ USA
Fig 6: Extraction And Insertion Tool (210 589 03 43 00)
G07274463Courtesy of MERCEDES-BENZ USA
Fig 7: Press (163 589 03 43 00)
G07300835Courtesy of MERCEDES-BENZ USA
REPAIR MATERIALS

Number Designation Order number
BR00.45-Z-1041-06A Spray Teflon, article no. K0007.1 Carl Roth
GmbH & Co KG