Remove/install steering column tube - AR46.10-P-0400MCU

MODEL 451.3/4 

Fig 1: Identifying Steering Column Tube Remove/Install Components (1 Of 3)

Courtesy of MERCEDES-BENZ USA

Fig 2: Identifying Steering Column Tube Remove/Install Components (2 Of 3)

Courtesy of MERCEDES-BENZ USA

Fig 3: Identifying Steering Column Tube Remove/Install Components (3 Of 3)

Courtesy of MERCEDES-BENZ USA

MODIFICATION NOTES

22.8.07

Bolt, steering coupling to rack-and-pinion steering

*BA46.10-P-1001-01F

	Remove/install
	Notes on self-locking nuts and bolts		AH00.00-N-0001-01A
1	Remove bottom paneling for dashboard on driver side	: Before installing the steering wheel ensure that the rack-and-pinion steering (1) is in the center position (front wheels straightahead).	AR68.10-P-1501MCU
	Risk of death  caused by vehicle slipping or toppling off of the lifting platform.	Align vehicle between columns of vehicle lift and position four support plates at vehicle lift support points specified by vehicle manufacturer.	AS00.00-Z-0010-01A
2	Raise vehicle using the vehicle lift and remove underfloor paneling	Cordless drill/driver, cordless drill
3	Loosen nut (3) on steering coupling (2)	Turn the front wheels until the nut (3) is accessible.
4	Move the rack-and-pinion steering (1) into the center position (front wheels straightahead)
5	Unscrew nut (3) on the steering coupling (2), remove bolt (4) and slide steering coupling (2) upwards off the rack-and-pinion steering (1)	Replace nut (3) and bolt (4). Only the bolt (4) and nut (3) approved for model 451 may be used. Bolts and nuts of other models with the same dimensions have different properties due to other surface coatings and may impair the strength of the bolted connection. When the nut (3) is loosened, the cam-shaped bolt (4) rotates with it approx. half a revolution. However, the bolt (4) does not have to be counterheld. Check the steering coupling (2) for ease of movement and replace if necessary. : Turn the steering column tube (8) relative to the rack-and-pinion steering (1) until the steering coupling (2) can be assembled.	*BA46.10-P-1001-01F
6	Lower vehicle with vehicle lift
7	Remove bolts (5) on SAM control unit (N10/10)
8	Loosen locking device (arrow A) in the rear area of the SAM control unit (N10/10) and place SAM control unit (N10/10) to one side with electrical lines connected
9	Unscrew bolts (9) and remove top bearing cap (7)	Replace bolts (9). : The top bearing (10) must close flush with the cutouts (arrows C) of the crossmember under the dashboard (14). The bolts (9) are self-tapping, therefore a thread must not be precut. In each case tighten bolts (9) in steps of one revolution.	*BA46.10-P-1002-01F
10	Unscrew bolts (13) and remove bottom bearing cap (6)	Replace bolts (13). The bottom bearing (11) must be flush with the bottom area (arrow B) of the crossmember below the dashboard (14) otherwise the specified installation position of the steering column tube (8) will not be reached. The bolts (13) are self-tapping; therefore a thread must not be precut. In each case tighten bolts (13) in steps of one revolution.	*BA46.10-P-1003-01F
11	Loosen boot (12) of the steering column tube (8) from the firewall
12	Remove steering column tube (8) upwards
13	Install in the reverse order

STEERING SHAFT

Number	Designation		Model 451.3/4
BA46.10-P-1001-01F	Bolt, steering coupling to rack-and-pinion steering	Nm	20
BA46.10-P-1002-01F	Bolt to upper bearing shell	Nm	25
BA46.10-P-1003-01F	Bolt to lower bearing shell	Nm	25