Remove/Install Rear Axle Active Roll Stabilization Valve Support - AR32.34-P-5030GQX

Model 166.8 

with code 468 (ACTIVE CURVE SYSTEM) 

Courtesy of MERCEDES-BENZ USA

Fig 1: Rear Axle Active Roll Stabilization Valve Support Components Location - Model 166.8 With Code 468

Courtesy of MERCEDES-BENZ USA

Courtesy of MERCEDES-BENZ USA

	Remove/install
	Risk of injury  to skin or eyes from hydraulic fluid spraying out under pressure. Risk of poisoning  from swallowing hydraulic fluid.	Depressurize hydraulic system completely before starting any work on it. Wear protective clothing and safety glasses.	AS00.00-Z-0013-01A
	Notes on repair work on suspension components		AH00.00-P-0100-01A
	Notes on active roll stabilization		AH32.34-P-0001-01A
	Notes on self-locking nuts and bolts		AH00.00-N-0001-01A
1	Secure vehicle on vehicle lift		AR00.60-P-0100GZ
2	Deflate air springs with STAR DIAGNOSIS
	Notes on AIRmatic		AH32.22-P-1000-02GZ
		Deflate air springs in line with specifications; the wheel-and-tire assemblies must not touch the ground. The air springs can otherwise be damaged and fail later.	AD00.00-P-2000-04A
3	Detach right rear wheel-and-tire assembly
			AP40.10-P-4050EW
4	Remove corresponding underfloor paneling
5	Remove AdBlue® tank	Model 166.8 with engine 642 with code 468 (ACTIVE CURVE SYSTEM) with code U42 (BlueTEC diesel exhaust treatment (SCR))	AR14.40-P-2014GQ
6	Detach lines (4)		AR32.00-P-0001-01A
		Assembly cleaner	*BR00.45-Z-1028-04A
		Record plug	Fig 4
		Detaching tool	Fig 3
		Detaching tool	Fig 2
7	Expose brake line from bracket (5)
8	Unfasten line for electric parking brake (6) from bracket
9	Detach drive shaft from differential	Flexible coupling remains on drive shaft.	AR41.10-P-0050GQ
10	Support differential
	000 588 11 62 00 Major assembly mount		WS01.00-P-0092B
	000 588 10 62 00 Support plate		WS26.00-P-3309B
11	Detach shock absorbers from right lower control arm (8)	Screw/self-locking nut, shock absorber to spring link	*BA32.25-P-1001-03K
12	Remove bolts (7) of rear axle fastening and lower rear axle	If the side board end stop (24b) is fitted, check it is correctly seated.
		Self-locking bolt, rear axle carrier at front and rear to frame floor assembly	*BA35.10-P-1001-01K
13	Detach lines (1) from valve support (2)		AR32.00-P-0001-01A
		Assembly cleaner	*BR00.45-Z-1028-04A
		Screw/bolt, oil line to valve block on front axle/rear axle	*BA32.34-P-1008-01A
		Record plug	Fig 4
14	Mark, release and disconnect electrical connections (3)
15	Unscrew bolts (2s) and remove valve support (2)
16	Detach bracket from valve support (2) and rear axle carrier	If necessary Screw/bolt, bracket to rear axle valve support	*BA32.34-P-1005-01A
		Screw/bolt, bracket to rear axle valve block	*BA32.34-P-1004-01A
	Check
17	Check elastomer bearing (2g) of valve support (2)	Check elastomer bearing (2g) for wear, damage and correct seating, and replace if necessary.
18	Install in the reverse order
19	Fill and bleed ACTIVE CURVE SYSTEM		AR32.34-P-0021GQ

REAR AXLE SHOCK ABSORBER

Number	Designation			Model 166 except code 489 (AIRMATIC)
BA32.25-P-1001-03K	Screw/self-locking nut, shock absorber to spring link	Stage 1	Nm	180
		Stage 2	∠°	90

ACTIVE ROLL STABILIZATION

Number	Designation		Model 166
BA32.34-P-1004-01A	Screw/bolt, bracket to rear axle valve block	Nm	8

ACTIVE ROLL STABILIZATION

Number	Designation		Model 166
BA32.34-P-1005-01A	Screw/bolt, bracket to rear axle valve support	Nm	8

ACTIVE ROLL STABILIZATION

Number	Designation		Model 166
BA32.34-P-1008-01A	Screw/bolt, oil line to valve block on front axle/rear axle	Nm	20

REAR AXLE CARRIER

Number	Designation				Model 166
BA35.10-P-1001-01K	Self-locking bolt, rear axle carrier at front and rear to frame floor assembly	M14X1.5	Stage 1	Nm	100
			Stage 2	∠°	-180
			Stage 3	Nm	100
			Stage 4	∠°	90

Fig 2: Identifying Detaching Tool (221 589 01 33 00)

Courtesy of MERCEDES-BENZ USA

Fig 3: Identifying Detaching Tool (230 589 01 33 00)

Courtesy of MERCEDES-BENZ USA

Fig 4: Identifying Set Of Stop Plugs (129 589 00 91 00)

Courtesy of MERCEDES-BENZ USA

REPAIR MATERIALS

Number	Designation	Order number
BR00.45-Z-1028-04A	Assembly cleaner	A 000 986 56 01