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

MODEL 216 

MODEL 221 

Fig 1: Identifying Front RPM Sensor Components

Courtesy of MERCEDES-BENZ USA

	Remove/install
	Information on preventing damage to electronic components due to electrostatic discharge		AH54.00-P-0001-01A
	Notes on self-locking nuts and bolts		AH00.00-N-0001-01A
1	Switch off ignition
2	Remove front wheel
	Remove/install wheels		AP40.10-P-4050SX
3	Separate electrical connector (1) from the RPM sensor (L6/1, L6/2) and expose feed line	See "Disconnect/connect front axle electrical distributor connector".	AR33.10-P-0100-06SX
4	Slacken bolt (5a)	Model 221 with code Z07, top protection.
			*BA42.10-P-1011-04K
5	Remove bolt (2)	Installation:  Mount bracket (3) with RPM sensor (L6/1, L6/2).
			*BA42.30-P-1001-01J
6	Remove bolt (5a) and remove T-piece (5) from bracket (3)	Model 221 with code Z07, top protection. Installation:  Screw down the bolt (5a) until finger-tight and do not tighten until the bolt (2) has been installed, otherwise the brake lines (6) could be damaged as a result of deformation!
7	Pull RPM sensor (L6/1, L6/2) out of steering knuckle (4)
	Clean
8	Clean the mounting hole of RPM sensor (L6/1, L6/2) in steering knuckle (4)
9	Clean the RPM sensor (L6/1, L6/2)	When reusing the RPM sensor (L6/1, L6/2)
10	Install in the reverse order
11	Read out fault memory and erase if necessary Connect STAR DIAGNOSIS and read out fault memory		AD00.00-P-2000-04A

FRONT AXLE RPM SENSOR

Number	Designation		Model 216	Model 221
BA42.30-P-1001-01J	Self-locking bolt, front axle RPM sensor to steering knuckle	Nm	25	25

BRAKE LINES, BRAKE HOSES

Number	Designation		Model 221 except 221.074/077/174 /177/179
BA42.10-P-1011-04K	Bolt, T-piece to bracket	Nm	10