Remove/Install The Suspension Strut - AR32.25-P-1017GQ

Model 166, 292 

MODIFICATION NOTES

26.06.2017	Operation steps added	Operation steps 23, 24
26.06.2017	Special tool inserted	Operation step 24
29.04.2020	Air suspension pressure line to suspension strut		BA32.22-P-1005-03B

Shown on model 166 

Fig 1: Suspension Strut Components Location - Model 166

Courtesy of MERCEDES-BENZ USA

	Risk of injury  caused by scraping or cutting body parts on sharp vehicle parts	Always wear protective gloves when working on or near sharp and non-deburred vehicle parts. Deburr repair panels.	AS00.00-Z-0017-01A
	Risk of injury  . Moving parts can pinch, crush or, in extreme cases even sever extremities.	No parts of the body or limbs should be within the operating area of mechanical components when moving components.	AS00.00-Z-0009-01A
	Risk of injury  caused by pinching or crushing when working on springs or spring bodies that are under tension	Use only approved tensioning devices; additionally screen off hazardous area if necessary. Check special tools for damage and proper operation (visual inspection). Wear protective gloves.	AS00.00-Z-0001-01A
	Information on preventing damage to electronic components due to electrostatic discharge		AH54.00-P-0001-01A
	Notes on threaded connections fastened using a tightening angle-based tightening process		AH00.00-P-0020-01A
	Notes on self-locking nuts and bolts		AH00.00-N-0001-01A
	Note on calculation of tightening torque when using insertion or socket tools with various effective lengths		AH00.00-P-0015-01CW
	Notes on repair work on suspension components		AH00.00-P-0100-01A
	Notes on AIRmatic	Model 166, 292 with code 489 (AIRMATIC)	AH32.22-P-1000-02GZ
	Remove/install
1	Open engine hood and raise to vertical position	Model 166, 292
		Model 166	AR88.40-P-1000GQ
2	Lift vehicle on vehicle lift		AR00.60-P-1000GZ
3	Empty AIRmatic using diagnostic system	Model 166, 292 with code 489 (AIRMATIC)
			AD00.00-P-2000-04A
		Empty and fill the AIRMATIC as per the specifications; the complete wheels must not be touching the ground. The air springs can otherwise be damaged and fail later.
4	Switch off ignition and store transmitter key outside of transmission range (min. 2 m)
5	Remove cover over corresponding suspension strut tower
6	Remove air duct segment (1)	When removing right suspension strut (2).
7	Remove pressure line (3) and seal connections with suitable stop plugs	Model 166, 292 with code 489 (AIRMATIC)
		Air suspension pressure line at suspension strut at front	*BA32.22-P-1005-03B
		Record plug	Fig 3
		Socket wrench bit	Fig 4
8	Unscrew nuts (2m)	Nut, shock absorber on front end	*BA32.25-P-1001-01O
9	Secure suspension strut (2) using suitable means to prevent it from falling
10	Remove washer (2s)	Model 166, 292 with code 430 (On & off-road package)
11	Remove front wheel and tire assembly	Model 292	AR40.10-P-1100GQC
		Model 166	AP40.10-P-4050EW
12	Remove front section of fender liner in front fender	Model 166, 292 with code 489 (AIRMATIC)	AR88.10-P-1310GQ
13	Detach electrical subharness (4a) from all holders at longitudinal member, suspension strut (2) and steering knuckle (5)	Model 166, 292 with code 489 (AIRMATIC)
		Check routing is correct, free of tension and chafing. Otherwise damage can occur.
14	Detach, release and disconnect electrical connector of electrical subharness (4a) from holder	Model 166, 292 with code 489 (AIRMATIC)
15	Detach electrical subharnesses (4b, 4c) from all holders at longitudinal member, suspension strut (2) and steering knuckle (5)	Check routing is correct, free of tension and chafing. Otherwise damage can occur.
		Electrical subharness (4b) on right side of vehicle only.
16	Remove bracket (6)
17	Detach brake hose (7) from holder (7h)
	Notes on installing brake hoses		AH42.10-P-9406-01A
18	Remove torsion bar linkage (8) at torsion bar (9)	Remove torsion bar linkage (8) carefully. Torsion bar (9) is under tension.
		Bolt, link rod to torsion bar	*BA32.20-P-1002-02Q
19	Remove tie rod (10) at steering knuckle (5)	Self-locking nut, tie rod to steering knuckle	*BA46.40-P-1002-01K
20	Support lower transverse control arm (11)
	000 588 10 62 00 Support plate		WS26.00-P-3309B
	000 588 11 62 00 Major assembly mount		WS01.00-P-0092B
21	Remove steering knuckle (5) at upper transverse control arm (12)	Self-locking nut, upper ball joint out of upper transverse control arm to steering knuckle	*BA33.20-P-1001-01R
22	Remove suspension strut (2) at lower transverse control arm (11)	Only tighten threaded connection of suspension components when in ready-to-drive condition.
		Self-locking nut, shock absorber to wishbone	*BA32.25-P-1002-01O
23	Unscrew collar nut of front axle shaft to wheel hub	Collar nut, front axle shaft to front axle shaft flange	*BA33.30-P-1001-02I
24	Push front axle shaft out of wheel hub	Extraction and insertion tool	Fig 2
25	Pry and remove front axle shaft from front axle differential	Do not damage the boots and protective ring of the front axle shaft or the radial shaft sealing ring in the front axle transmission. Otherwise there may be consequential damage to the front axle shaft or transmission.
		Aid of helper required.
		Replace retaining ring.
26	Push lower control arm (11) downwards and remove suspension strut (2)	Do not damage subharnesses (4a, 4b, 4c) or boots for front axle shaft or suspension strut (2). Otherwise, the function is not assured.
		Aid of helper required.
		Check for correct installation position of suspension strut (2).
27	Install in the reverse order
	Check
28	Check pressure line (3) and pressure line connections for damage	Model 166, 292 with code 489 (AIRMATIC)
		In the case of complaints. ↓ Repair AIRmatic pressure line connection.	AR32.22-P-2001-02GZ
		Pressure line of air suspension to central reservoir	*BA32.22-P-1009-03B
		Air suspension pressure line at suspension strut at front	*BA32.22-P-1005-03B
		Pressure line of air suspension to valve unit	*BA32.22-P-1004-03B
		Pressure line, air suspension to compressor	*BA32.22-P-1003-03B
		Air suspension pressure line to rear air suspension bellows	*BA32.22-P-1001-03B
		Socket wrench bit	Fig 4
		Knife	Fig 5
29	Check AIRmatic for leaks	Model 166, 292 with code 489 (AIRMATIC)	AR32.22-P-8100GZ

FRONT AXLE TORSION BAR

Number	Designation			Model 166 except code 468 (ACTIVE CURVE SYSTEM)	Model 166 with code 468 (ACTIVE CURVE SYSTEM)
BA32.20-P-1002-02Q	Bolt, link rod to torsion bar	Stage 1	Nm	80	80
		Stage 2	∠°	90	90

FRONT AXLE TORSION BAR

Number	Designation			Model 292 except code 468 (ACTIVE CURVE SYSTEM)	Model 292 with code 468 (ACTIVE CURVE SYSTEM)
BA32.20-P-1002-02Q	Bolt, link rod to torsion bar	Stage 1	Nm	80	80
		Stage 2	∠°	90	90

AIR SUSPENSION

Number	Designation		Model 166	Model 292
BA32.22-P-1001-03B	Air suspension pressure line to rear air suspension bellows	Nm	2	2

AIR SUSPENSION

Number	Designation		Model 166	Model 292
BA32.22-P-1003-03B	Pressure line, air suspension to compressor	Nm	3, 5	3, 5

AIR SUSPENSION

Number	Designation			Model 166	Model 292
BA32.22-P-1004-03B	Pressure line of air suspension to valve unit	Ø 3 4 mm	Nm	2	2
		Ø 3 6 mm	Nm	3, 5	3, 5

AIR SUSPENSION

Number	Designation		Model 166	Model 292
BA32.22-P-1005-03B	Air suspension pressure line at suspension strut at front	Nm	2	2

AIR SUSPENSION

Number	Designation		Model 166	Model 292
BA32.22-P-1009-03B	Pressure line of air suspension to central reservoir	Nm	5	5

FRONT AXLE SHOCK ABSORBER

Number	Designation		Model 166	Model 292
BA32.25-P-1001-01O	Nut, shock absorber on front end	Nm	60	60

FRONT AXLE SHOCK ABSORBER

Number	Designation			Model 166	Model 292
BA32.25-P-1002-01O	Self-locking nut, shock absorber to wishbone	Stage 1	Nm	100	100
		Stage 2	∠°	180	180

WHEEL CONTROL, HUB

Number	Designation			Model 166	Model 292
BA33.20-P-1001-01R	Self-locking nut, upper ball joint out of upper transverse control arm to steering knuckle	Stage 1	Nm	100	100
		Stage 2	∠°	45	45

FRONT AXLE SHAFT

Number	Designation				Model 166	Model 292
BA33.30-P-1001-02I	Collar nut, front axle shaft to front axle shaft flange	Stage 1		Nm	250	250
		Stage 2	Loosen	∠°	180	180
		Stage 3		Nm	200	200
		Stage 4		∠°	30	30

TIE ROD

Number	Designation			Model 166	Model 292
BA46.40-P-1002-01K	Self-locking nut, tie rod to steering knuckle	Stage 1	Nm	90	90
		Stage 2	∠°	90	90

Fig 2: Identifying Extraction And Insertion Tool (210 589 03 43 00)

Courtesy of MERCEDES-BENZ USA

Fig 3: Identifying Set Of Stop Plugs (129 589 00 91 00)

Courtesy of MERCEDES-BENZ USA

Fig 4: Identifying Socket Wrench Bit (211 589 00 09 00)

Courtesy of MERCEDES-BENZ USA

Fig 5: Identifying Knife (000 589 12 28 00)

Courtesy of MERCEDES-BENZ USA