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Remove/install stabilizer bar on front axle - AR32.20-P-0300RT

MODEL 251 

Fig 1: Identifying Stabilizer Bar On Front Axle Remove/Install Components - Shown On Model 251
G10120656Courtesy of MERCEDES-BENZ USA

Shown on model 251 with all-round level control system, code 489 

MODIFICATION NOTES

19.10.11 Value hanged: screw/bolt, retaining clamp for stabilizer bar to front axle carrier   *BA32.20-P-1001-02L 
Value changed: Nut, link rod to front damper *BA32.20-P-1003-02L 
Value changed: Nut, link rod to stabilizer bar *BA32.20-P-1004-02L 
Value changed: Nut, link rod to stabilizer bar *BA32.20-P-1004-02L 
REMOVING Removing     
DANGER Risk of injury  caused by pinching or crushing  when working on springs or spring bodies that are under tension Use only approved tensioning devices; shield off hazard area if necessary.
Inspect special tools for damage and proper operation (visual inspection).
Wear protective gloves.		 AS00.00-Z-0001-01A
DANGER Risk of injury  caused by moving parts that can pinch, crush  or, in extreme cases, even sever  extremities No parts of the body or limbs should be within the operating range of the mechanism when moving components. AS00.00-Z-0009-01A
DANGER Risk of death  caused by vehicle slipping or toppling off of the lifting platform. Align vehicle between columns of vehicle lift and position four support plates at vehicle lift support points specified by vehicle manufacturer. AS00.00-Z-0010-01A
NOTES Notes on self-locking nuts and bolts All models AH00.00-N-0001-01A
NOTES When working on the front-end assembly, be careful not to scratch, mark or notch the surfaces of aluminum parts. Otherwise the service life of the parts will be affected    
1 Raise vehicle using drive-on lifting platform    
2.1 Detach lower engine compartment paneling Vehicles with gasoline engine. AR61.20-P-1105RT
2.2 Remove bottom section of soundproofing Vehicles with diesel engine. AR94.30-P-5300RT
3.1 Unscrew nuts (8) of link rods (7) and detach link rods (7) from stabilizer bar (1) IMPORTANT Only if link rods (7) are obviously undamaged.  
3.2 Unscrew nuts (6) of link rods (7) and detach link rods (7) from front shock absorbers IMPORTANT Only if link rods (7) are obviously defective.  
4 Remove bolts (2) of stabilizer bar retaining clamps (4) and detach both stabilizer bar retaining clamps (4) IMPORTANT Detach the stabilizer bar retaining clamps (4) carefully as the stabilizer bar (1) is under tension.
IMPORTANT Mark installation positions.		  
5 Remove stabilizer bar (1) from front axle carrier    
6 Remove bolts (3) of torsion bushing retaining clamps (5) and detach torsion bushings from stabilizer bar (1) IMPORTANT Only if a new stabilizer bar (1) or new torsion bushings are being installed.
IMPORTANT Mark installation positions.		  
7 Detach link rods (7) from stabilizer bar (1) IMPORTANT Only if the link rods (7) have not been detached from the stabilizer bar (1).  
INSPECT Checking     
8 Check link rods (7) and torsion bushings for damage IMPORTANT Replace if necessary.  
INSTALLING Install     
INSTALLATION IMPORTANT Only tighten nuts and bolts of chassis components when vehicle is in a ready-to-drive condition.    
9 Attach link rods (7) to stabilizer bar (1) IMPORTANT Only if new link rods (7) are being installed.
IMPORTANT Do not tighten the nuts (8) yet.		  
10 Attach torsion bushings to stabilizer bar (1) and preassemble bolts (3) with appropriate nuts to torsion bushing retaining clamps (5) IMPORTANT Only if a new stabilizer bar (1) or new torsion bushings are being installed.
IMPORTANT Transfer the previously made markings to the new stabilizer bar (1). Align the torsion bushing retaining clamps (5) with the markings. Do not tighten nuts of bolts (3) yet.		  
11 Position stabilizer bar (1) on front axle, install stabilizer bar retaining clamps (4) and insert bolts (2) IMPORTANT Observe previous markings. Align stabilizer bar (1) in center. The bent ends of the stabilizer bar (1) must point downward. Do not tighten bolts (2) yet.  
12.1 Mount link rods (7) onto front shock absorbers and screw on nuts (6) IMPORTANT Only if new link rods (7) have been fitted.
IMPORTANT Do not tighten the nuts (6) yet.		  
12.2 Mount link rods (7) onto stabilizer bar (1) and screw on nuts (8) IMPORTANT Only if the link rods (7) were not previously removed.
IMPORTANT Do not tighten the nuts (8) yet.		  
13 Make sure that stabilizer bar (1), torsion bushing retaining clamps (5) and stabilizer bar retaining clamps (4) are positioned correctly IMPORTANT Realign if necessary.  
14 Fully tighten bolts (3) TORQUE SPECIFICATION *BA32.20-P-1002-02L 
15 Fully tighten bolts (2) TORQUE SPECIFICATION *BA32.20-P-1001-02L 
16 Tighten nuts (6) IMPORTANT Only if new link rods (7) have been fitted.  
TORQUE SPECIFICATION *BA32.20-P-1003-02L 
17 Tighten nuts (8) TORQUE SPECIFICATION *BA32.20-P-1004-02L 
18.1 Install lower engine compartment paneling. Vehicles with gasoline engine. AR61.20-P-1105RT
18.2 Install bottom part of soundproofing Vehicles with diesel engine. AR94.30-P-5300RT
19 Lower vehicle using drive-on lifting platform    
FRONT AXLE STABILIZER BAR

Number Designation Model 251
BA32.20-P-1001-02L Bolt, stabilizer bar retaining clamp to bearing bracket   Nm 180
BA32.20-P-1002-02L Bolt, torsion bushing retaining clamp   Nm 40
BA32.20-P-1003-02L Nut, link rod to front shock Stage 1 Nm 100
2nd stage loosen ∠° 180
Stage 3 Nm 120
Stage 4 ∠° 45
BA32.20-P-1004-02L Nut, link rod to stabilizer bar Stage 1 Nm 100
2nd stage loosen ∠° 180
Stage 3 Nm 120
Stage 4 ∠° 45
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