Remove/install and secure rear axle shaft twelve-point collar nut - AR35.30-P-0115-01SX

REAR AXLE SHAFT

Number	Designation					Model 216 except model 216.379	Model 216.379
BA35.30-P-1001-01I	Collar nut, rear axle shaft to rear axle shaft flange	self-locking	M26		Nm	350	-
		not self-locking	M26	Stage 1	Nm	170	-
				Stage 2	∠°	45	-
		not self-locking	M29	Stage 1	Nm	-	150
				Stage 2	∠°	-	45

REAR AXLE SHAFT

Number	Designation					Model 221 without code Z07/Z07+Z19 except model 221.179	Model 221.179
BA35.30-P-1001-01I	Collar nut, rear axle shaft to rear axle shaft flange	self-locking	M26		Nm	350	-
		not self-locking	M26	Stage 1	Nm	170	-
				Stage 2	∠°	45	-
		not self-locking	M29	Stage 1	Nm	-	150
				Stage 2	∠°	-	45

REAR AXLE SHAFT

Number	Designation					Model 221 with code Z07/Z07+Z19
BA35.30-P-1001-01I	Collar nut, rear axle shaft to rear axle shaft flange	self-locking	M26		Nm	-
		not self-locking	M26	Stage 1	Nm	-
				Stage 2	∠°	-
		not self-locking	M29	Stage 1	Nm	390
				Stage 2	∠°	-

Fig 1: Identifying Wrench Socket (220 589 01 09 00)

Courtesy of MERCEDES-BENZ USA

Detaching

Apply parking brake
Unscrew twelve-point collar nut (12).
The twelve-point collar nut (12) should be replaced each time it is unscrewed.

Socket for twelve-point collar nut M29

If a self-locking collar nut is mounted, the thread of the rear axle shaft is to be cleaned. Use suitable brush to remove residue of thread locking compound (arrow).

Fig 2: Identifying Thread Locking Compound On Threads Of The Rear Axle Shaft
Courtesy of MERCEDES-BENZ USA

Mount on and secure

Only for thread M26: note twelve-point collar nut (12) variant. The non self-locking variant is replaced by the self-locking variant.
Tighten twelve-point collar nut (12) .
Secure twelve-point collar nut (12) with caulker so that no gap remains between the groove and locking collar of the twelve-point collar nut.
Double lock twelve-point collar nut (arrows), for non self-locking variant. Lock twelve-point collar nut one time only, for self-locking variant.
Release parking brake.

Fig 3: Identifying Twelve-Point Collar Nut

Courtesy of MERCEDES-BENZ USA