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

MODEL 211 (except 211.08/09/28/29) 

Fig 1: Identifying Steering Coupling Components

Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

	Remove/install
1	Fully extend or pull out adjustable steering column	Necessary to separate the steering coupling (25) from the lower steering shaft (80a).
2	Deactivate easy entry/exit	Vehicles with memory package (driver seat, steering column, mirrors) code 275 If the vehicle is equipped with the easy entry and exit feature, this will have to be deactivated first Otherwise the driver seat and steering wheel move to a different position when the driver door is opened or closed. The upper frame will be damaged if the retaining device is installed Disabling takes place via the buttons on the steering wheel in the "Comfort" menu of the multifunction display, see owner's manual.
3	Turn steering wheel to center position (front wheels in straight-ahead position) and fix in place with holding device	On a disengaged steering coupling (25) the steering wheel should not be turned because the spiral contact coil will be destroyed.
			Fig 2
4.1	Remove bottom section of soundproofing	Vehicles with diesel engine	AR94.30-P-5300T
4.2	Remove engine compartment paneling	Vehicles with gasoline engine	AR61.20-P-1105T
5	Detach steering coupling (25) from lower steering shaft (80a) by removing bolt (25a)		*BA46.10-P-1001-01E
6	Pull the lower steering shaft (80a) upward to extract it from the steering coupling (25.)	Do not use force (hammer blows, excessive leverage) as the lower steering shaft (80a) is sensitive to lateral forces. Installation:  Insert lower steering shaft (80a) all the way into the steering coupling (25); pay attention to the studs of the steering coupling (25) while doing so and the groove of the lower steering shaft (80a) (arrows).
7	Unscrew nut with bolt (25b) from steering coupling (25)	Installation:  Replace self-locking nut.
			*BA46.10-P-1002-01E
8	Pull steering coupling (25) carefully off control valve of rack-and-pinion steering (23)	Do not use force (hammer blows, severe leverage) as a predetermined fracture point is located on the control valve. If necessary, expand clamping slot slightly with screwdriver.
		Installation:  Turn rack-and-pinion steering (23) to center position and fit steering coupling (25).	AR46.20-P-0600-01P
9	Pull locking plate (25f) off the steering coupling (25) while lifting the lug using a suitable tool	The locking plate (25f) is not available as replacement part. Installation:  Insert a new self-locking nut into the existing locking plate (25f). Push on locking plate (25f) only until the lug engages in the steering coupling (25).
10	Install in the reverse order

STEERING SHAFT

Number	Designation			Model 211 except 211.08/09/28/29
BA46.10-P-1001-01E	Bolt, steering coupling to steering shaft	Stage 1	Nm	30
		Stage 2	∠°	-
BA46.10-P-1002-01E	Safety screw and steering coupling locknut to rack-and-pinion steering		Nm	24

Fig 2: Identifying Holding Device (129 589 01 21 00)

Courtesy of MERCEDES-BENZ OF NORTH AMERICA.