Removing and installing front axle spring strut - AR32.31-P-0605A

MODEL 129 with CODE (216c) adaptive damping system (ADS II) with electronic level control

Fig 1: Identifying Front Axle Spring Strut Components

	Removing, installing
Installation	Replace self-locking bolts and nuts.
1	Remove front wheels		AP40.10-P-4050Z
2	Install clamping plates (01b, 01c) and clamping device (01a).		Figure
			Figure
	Risk of injury from being trapped or crushed when working on preloaded springs or spring bodies	Only use approved clamping devices and if appropriate also screen off the danger area. Check special tools for damage and function, (visual inspection). Wear safety gloves.	AS00.00-Z-0001-01A
3	Clamp front spring	Do not use a impact wrench Clamp spring until the wishbone is relieved of load	AR32.20-P-0200-01A
	< f > Risk of injury < f > to skin or eyes due to hydraulic fluid spraying out under high pressure. < f > Risk of poisoning < f > due to consuming hydraulic fluid.	Before starting work on the hydraulic system, depressurize the system. Wear protective clothing and safety glasses.	AS00.00-Z-0013-01A
4	Empty pressure oil system at front axle	Installation : Fill pressure oil system at front and rear axles.	AR32.31-P-0630A
	General notes for working on vehicles with level control/ADS	All models with code 216b, 216c, 217a, 480	AH32.00-P-0002-01A
5	Remove bracket (11n) of pressure line (P4) at spring strut/piston rod.
6	Unscrew nuts (11j) and remove bracket (11v).
7	Pull pressure line (P4) off spring strut/piston rod.	Installation : Ensure correct routing of pressure line (P4).
8	Detach nut (11a) with washer and rebound stop (llb) of upper spring strut fixing.		Figure
		Nut (11a)	*BA32.31-P-1001-02A
9	Disconnect leak oil line (LL/LR) from the steel line connection	Installation : Ensure correct routing of leak oil line (LL/LR).	*BA32.31-P-1001-09A
10	Unclip bracket for lines from spring strut (arrows).
11	Unscrew spring strut (11) from steering knuckle (33) and remove.	Installation : Replace bolts (11i) and self-locking nut (11u).	*BA32.31-P-1002-02A
		Fit upper bolt (11k) and tighten slightly until the surface of the steering knuckle abuts the spring strut on the inside. Tighten bolts (11i) and then tighten upper bolt (11k).	*BA32.31-P-1003-02A
12	Secure steering knuckle (33) with a suitable hook (arrow) to prevent it from tilting away.	Do not tension brake hose and electric cables
13	If necessary, remove rubber mount (11c).	According to the scope of repairs determined, e.g. for accident repair. Installation : Replace nut (11d).
			*BA32.31-P-1004-02A
	Checking
14	Check bump stop (11h), retaining strap (11e), cup seal (11f) for damage and cracks.	Installation : Attach cup seal (11f) to rubber mount (11c).
15	Check spring strut for leaks.	Slight oil mist is permissible. If the spring strut tube is moistened with oil ↓ Replace spring strut.
16	Install in reverse order
17	Carry out chassis alignment check.		AR40.20-P-0200A
	Risk of injury from drilling gas-filled units or components (gas fill is not inflammable)	Wear safety glasses and safety mask.	AS00.00-Z-0006-01A
18	Dispose of shock-absorber strut		OS32.25-P-0120-01A

FRONT AXLE SPRING STRUT LEVEL CONTROL

Number	Designation		Model 129 with electronic level control/ADS II
BA32.31-P-1001-02A	Self-locking nuts for attaching spring strut to front end	Nm	80
BA32.31-P-1002-02A	Self-locking bolts for attaching spring strut to steering knuckle	Nm	110
BA32.31-P-1003-02A	Self-locking nuts of clamping connection of spring strut/steering knuckle	Nm	200
BA32.31-P-1004-02A	Self-locking nuts for attaching spring strut rubber mount to front end	Nm	20

FRONT AXLE SPRING STRUT PRESSURE OIL LINES

Number	Designation			Model 129 with electronic level control/ADS II
BA32.31-P-1001-09A	Leak oil line (LL/LR) to the steel line connection	M10x1	Nm	14

Fig 2: Identifying Clamping Unit (202 589 01 31 00)

Fig 3: Identifying Clamping Plates (202 589 13 63 00)

Fig 4: Identifying Socket Wrench (124 589 00 09 00)