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Remove/install steering coupling - AR46.10-P-8000SX

MODEL 221.0 /1, 216 

Fig 1: Identifying Steering Coupling, Lower Steering Shaft, Locking Plate And Screws
G07587778Courtesy of MERCEDES-BENZ USA
REMOVINGINSTALLING Remove/install     
NOTES Notes on self-locking nuts and bolts   AH00.00-N-0001-01A
1 Deactivate easy entry/exit function Vehicles with memory package (driver seat, steering column, mirrors) code 275 AR54.30-P-1000-02ESX
2 Turn steering wheel to central position (front wheels in straight ahead position) and secure with the retaining device NOTES On a disengaged steering coupling (25) the steering wheel should not be turned because the spiral contact coil will be destroyed.  
SPECIAL TOOL Fig 2
3 Remove bottom engine compartment paneling Vehicles without code (Z07) Top protection AR61.20-P-1105SX
Vehicles with code (Z07) Top protection AR61.20-P-1105SXS
4 Remove heat shield from lower steering shaft (80a)    
5 Remove heat shield from steering coupling (25) Model 221.071/ 171, model 221.176  
6 Detach steering coupling (25) from lower steering shaft (80a) by removing bolt (25a) TORQUE SPECIFICATION *BA46.10-P-1001-01L 
7 Pull lower steering shaft (80a) upward out of steering coupling (25) NOTES Do not use force (hammer blows, excessive leverage) as the lower steering shaft (80a) is sensitive to lateral forces.  
8 Unscrew nut and pull bolt (25b) out of steering coupling (25) TORQUE SPECIFICATION *BA46.10-P-1002-01L 
9 Detach steering coupling (25) from rack-and- pinion steering    
IMPORTANTInstallation:  Turn rack-and-pinion steering to center position and fit steering coupling (25). AR46.20-P-0600-01SX 
10 Detach locking plate (25f) from steering coupling (25) IMPORTANT The locking plate (25f) is not available as a replacement part.
Installation:  Insert a new self-locking nut into the existing locking plate (25f).
 
11 Install in the reverse order    
STEERING SHAFT

Number Designation Model 216 Model 221
BA46.10-P-1001-01L Self-locking bolt, steering coupling to steering shaft Nm 30 30
BA46.10-P-1002-01L Self-locking nut, steering joint to rack-and-pinion steering Nm 25 25
Fig 2: Identifying Holding Device (129 589 01 21 00)
G07587779Courtesy of MERCEDES-BENZ USA