Remove/install left front or right RPM sensor - AR42.30-P-0712MCC

MODEL 451.3/4 

Fig 1: Identifying Front RPM Sensor Components

Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

	Remove/install
	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
1	Lift vehicle with lifting platform and remove underfloor paneling	Rechargeable drill / screwdriver http://gotis.aftersales.mercedes-benz.com
2	Mark the position of brackets (5) on electrical line (1) and on brake line (4)
3	Unscrew bolt (3) on the left front RPM sensor (L6/1) or right front RPM sensor (L6/2)	Replace self-locking bolt (3).
4	Separate RPM sensor connector (L6/1x1) or RPM sensor connector (L6/2x1)
5	Loosen electrical line (1) of left front RPM sensor (L6/1) or right front RPM sensor (L6/2) from the brackets (2)	Observe correct routing of the electrical line (1) otherwise damage can occur to the electrical line (1) of the left front RPM sensor (L6/1) or right front RPM sensor (L6/2).
6	Unclip brackets (5) on brake line (4)	Observe installation position of brackets (5) on brake line (4). The brackets (5) remain on the electrical line (1).
7	Pull the left front RPM sensor (L6/1) or right front RPM sensor (L6/2) out of the steering knuckle and remove	Installation:  The contact surface of the left front RPM sensor (L6/1) or right front RPM sensor (L6/2) must be clean and free from rust. Clean contact surface if necessary.
8	Unclip brackets (5) on the electrical wiring harness (1) and attach at exactly the same point on the electrical line (1) of the new left front RPM sensor (L6/1) or new right front RPM sensor (L6/2)	When replacing the left front RPM sensor (L6/1) or right front RPM sensor (L6/2).
9	Install in the reverse order
10	Read out fault memory
	Connect STAR DIAGNOSIS and read out fault memory		AD00.00-P-2000-04MCC