Remove/Install Spring Control Arm On Front Axle - AR33.15-P-0170FR
Model 257
Shown on left side of vehicle except code M005 (4MATIC)
Shown on right side of vehicle with code
M005 (4MATIC)
| 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 | |
| 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 | |
| Notice | Notes on AIR BODY CONTROL | Model 257 with code 489 (AIR BODY CONTROL) |
AH32.22-P-1000-03LWO |
| Notice | Notes on handling, transport and storage of composite brake disks | AH42.10-P-9406-12LF | |
| Notice | Notes on threaded connections fastened using a tightening angle-based tightening process | AH00.00-P-0020-01A | |
| Notice | Notes on self-locking nuts and bolts | AH00.00-P-0001-01KOA | |
| Note on calculation of tightening torque when using insertion or socket tools with various effective lengths | AH00.00-P-0015-01CW | ||
| Notes on safety-relevant components | AH00.00-Z-0019-01A | ||
| Notes on repair work on suspension components | AH00.00-P-0100-01A | ||
| Remove/install | |||
| 1 | Vent pressure in AIRMATIC system using vehicle diagnosis system. | Model 257 with code 489 (AIR BODY CONTROL) |
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| AD00.00-P-2000-06FR | |||
| 2 | Remove center and rear engine compartment lining. | AR61.20-P-1105FR | |
| 3 | Remove front wheel. | AR40.10-P-1102A | |
| 4 | Unhook electric lines (10) from holder (11) and place to one side. | Model 257 with code M005 (Vehicles with 4MATIC/all-wheel drive) Do not kink, crush or stretch electric lines. Otherwise, the lines will be damaged and malfunctions will occur. |
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| 5 | Unscrew nut (4) and remove suspension strut (5) from spring link (2). | Model 257 with code 489 (AIR BODY CONTROL) |
AR32.25-P-1017FRA |
| Model 257 except code 489 (AIR BODY CONTROL) Route suspension strut (5) on spring control arm (2) in suspension strut linkage area to one side. Otherwise, the elastomer boot on the suspension strut joint will be damaged. |
AR32.25-P-1017FR | ||
| 6 | Unscrew nut (6) and remove torsion bar linkage (7) from spring link (2). | Model 257 except code M005 (Vehicles with 4MATIC/all-wheel drive) The ball head must be counterheld and an impact wrench/driver must not be used. Otherwise the ball head gets damaged. |
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| 7 | Remove stabilizer bar from front axle. | Model 257 with code M005 (Vehicles with 4MATIC/all-wheel drive) |
AR32.35-P-2200FRA |
| 8 | Unscrew nut (8) and remove spring link (2) from front axle carrier (9). | *BA33.20-P-1002-01U | |
| 9 | Unscrew nut (1), detach and remove spring link (2) from steering knuckle (3). | Counterhold the ball head and do not use an impact wrench/driver. Otherwise the ball head or steering knuckle (3 may be damaged. |
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| *BA33.20-P-1001-01U | |||
Socket wrench |
Fig 4 | ||
| 10 | Remove holder (11) from spring link (2). | Model 257 with code M005 (Vehicles with 4MATIC/all-wheel drive) When replacing the spring control arm (2). |
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| Check | |||
| 11 | Check sealing bellows and ball head of spring link (2) for damage. | If damage is found, ↓ replace spring link (2). |
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| 12 | Check suspension strut linkage on spring link (2) for damage. | If damage is found, ↓ replace spring link (2). |
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| 13 | Check suspension strut linkage on spring link (2) for damage. | Model 257 except code M005 (Vehicles with 4MATIC/all-wheel drive) If damage is found, ↓ replace spring link (2). |
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| 14 | Check if an elastomer bearing for caster correction is installed in the previously-installed spring link (2). | When replacing the spring control arm (2). If an elastomer bearing for caster correction is installed, ↓ remove elastomer bearing of new spring link (2) and install a corresponding elastomer bearing for caster correction. |
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| Model 257 except code M005 (Vehicles with 4MATIC/all-wheel drive) |
AR33.15-P-0001-01FR | ||
| Model 257 with code M005 (Vehicles with 4MATIC/all-wheel drive) |
AR33.15-P-0001-01FRA | ||
with code M005 (Vehicles with 4MATIC/all-wheel drive) Sleeve |
Fig 3 | ||
with code M005 (Vehicles with 4MATIC/all-wheel drive) Extraction and insertion tool |
Fig 2 | ||
except code M005 (Vehicles with 4MATIC/all-wheel drive) Extraction and insertion tool |
Fig 5 | ||
except code M005 (Vehicles with 4MATIC/all-wheel drive) Extraction and installation tool |
Fig 6 | ||
| 15 | Check elastomer bearing in spring link (2) for damage. | except code M005 (Vehicles with 4MATIC/all-wheel drive) Press-in tool When reusing the spring link (2). |
Fig 1 |
| Evaluation of elastomer bearings | AH00.10-P-0001-01A | ||
The elastomer bearing for caster correction has an off-center bearing core. If damage is found and a neutral elastomer bearing is installed, ↓ replace spring link (2). If damage is found and an elastomer bearing for camber correction is installed, ↓ replace elastomer bearing on spring link (2). |
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| Model 257 with code M005 (Vehicles with 4MATIC/all-wheel drive) |
AR33.15-P-0001-01FRA | ||
| Model 257 except code M005 (Vehicles with 4MATIC/all-wheel drive) |
AR33.15-P-0001-01FR | ||
with code M005 (Vehicles with 4MATIC/all-wheel drive) Sleeve |
Fig 3 | ||
with code M005 (Vehicles with 4MATIC/all-wheel drive) Extraction and insertion tool |
Fig 2 | ||
except code M005 (Vehicles with 4MATIC/all-wheel drive) Extraction and insertion tool |
Fig 5 | ||
except code M005 (Vehicles with 4MATIC/all-wheel drive) Extraction and installation tool |
Fig 6 | ||
except code M005 (Vehicles with 4MATIC/all-wheel drive) Press-in tool |
Fig 1 | ||
| 16 | Install in the reverse order. | ||
| 17 | Perform chassis alignment. | AR40.20-P-0200FR |
WHEEL CONTROL, HUB
| Number | Designation | Model 257 | ||
|---|---|---|---|---|
| BA33.20-P-1001-01U | Nut, spring control arm to steering knuckle | Stage 1 | Nm | 250 |
| Stage 2 | ∠° | - | ||
WHEEL CONTROL, HUB
| Number | Designation | Model 257 | ||
|---|---|---|---|---|
| BA33.20-P-1002-01U | Bolt, spring control arm to front axle carrier | Stage 1 | Nm | 120 |
| Stage 2 | ∠° | 180 | ||