Replace Steering Shaft Boot - AR46.10-P-0621VA

MODEL 171 with ENGINE 113, 272 

MODEL 172 with ENGINE 152, 276, 651 

Fig 1: Steering Shaft Boot Components Location - Model 172 With Engine 276

Courtesy of MERCEDES-BENZ USA

	Remove/install
	Notes on self-locking nuts and Bolts		AH00.00-N-0001-01A
1	Extend or pull out adjustable steering column fully
2	Deactivate easy entry/exit	Model 171 with code (275) Memory package (driver seat, steering column, mirrors),	AR54.30-P-1000-02EDV
		Model 172 with code (275) Memory package for electrically adjustable front seats If the vehicle is equipped with the easy entry and exit feature, this will have to be deactivated first Otherwise, the driver seat (with model 171) and steering wheel move to a different position when the driver door is opened or closed. If the holding device is installed, the upper frame is damaged when the steering wheel is adjusted.	AR54.30-P-1000-02W
3	Turn steering wheel to central position (front wheels in straight ahead position) and secure with the retaining device	On a disengaged steering coupling (25) the steering wheel should not be turned because the spiral contact coil will be destroyed. Holding device	Fig 2
4	Open engine hood		AR88.40-P-1000V
5	Unclip electrical line of O2 probe or oxygen sensor from line bracket (1) and remove screw (2a)	Except model 172.403/475
6	Raise vehicle with vehicle lift		AR00.60-P-1000V
7.1	Remove lower bottom sections of soundproofing	Model 172.4 with diesel engine	AR94.30-P-5300W
7.2	Remove lower engine compartment paneling	Model 171	AR61.20-P-1105V
		Model 172.4 with gasoline engine	AR61.20-P-1105W
8	Remove Bolts (2b) and remove heat shield (2) downwards
9	Unscrew Bolt (25a)		*BA46.10-P-1001-01E
10	Pull the lower steering shaft (80a) upward to extract it from the steering coupling (25.)	Do not use force (hammer blows, excessive leverage) as otherwise the lower steering shaft (80a) will be damaged. The lower steering shaft (80a) is sensitive to force exposure from the side. Rotate the rack-and-pinion steering into the center position. Insert lower steering shaft (80a) fully into the steering coupling (25); pay attention to the studs of the steering coupling (25) and groove of the lower steering shaft (arrows).	AR46.20-P-0600-01V
11	Detach the locking plate (25f) from the steering coupling (25), while doing so use a suitable tool to lift up the retaining tab	The locking plate (25f) is not available as a replacement part. Insert a new self-locking nut in the existing locking plate (25f). Push on the locking plate (25f) until the retaining tab latches into the steering coupling (25).
12	Pull boot (3) out of firewall and remove from lower steering shaft (80a)	Grease boot (3) on the steering column tube in the area of the sealing surface and insert. Ensure that the continuous groove guarantees correct sealing. Klueber Polylub GLY 801 grease	*BR00.45-Z-1046-06A
13	Install in the reverse order

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

Courtesy of MERCEDES-BENZ USA