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Remove/install |
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Risk of death
caused by vehicle slipping or toppling off of the lifting platform. |
Align vehicle between the columns of the lifting platform and position the four support plates at the lifting platform support points specified by the vehicle manufacturer. |
AS00.00-Z-0010-01A |
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Risk of injury
to skin or eyes caused by hydraulic fluid spraying out under high pressure. Risk of poisoning
caused by swallowing hydraulic fluid. |
Depressurize the hydraulic system completely before starting any work on the system. Wear protective clothing and safety glasses. |
AS00.00-Z-0013-01A |
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If there is visible damage, e.g. crack formation or deformation of the front axle carrier, these parts must be replaced |
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Notes on self-locking nuts and bolts |
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AH00.00-N-0001-01A |
| 1.1 |
Deactivate easy entry/exit function |
Only vehicles with memory package (driver seat, steering column, mirrors) code 275
Otherwise the driver seat and steering wheel move into a different position if the driver door is opened or closed for example. Damage to 
the upper frame can occur when the holding device is installed.
It is switched off using the buttons on the steering wheel in the "Comfort" menu on the multifunction display, see vehicle owner's manual. |
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| 2 |
Extend the adjustable steering column fully or push out |
Necessary for separating steering coupling. |
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| 3 |
Extract fluid out of the power steering pump's fluid reservoir |
Hand pump |
Figure |
| 4 |
Mount engine carrier bracket, raise engine |
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AR33.10-P-0100-01P |
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Engine supporting shackle |
*WH58.30-Z-1002-07A |
| 5 |
Raise vehicle |
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AR00.60-P-1000P |
| 6 |
Remove the front wheels |
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Remove/install wheels, rotate if necessary |
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AP40.10-P-4050Z |
| 7 |
Unscrew rear bolts of supporting struts |
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| 8 |
Unscrew engine mount bolts |
Engine 111 |
*BA22.10-P-1008-01A |
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Engine 112.912 /946/961 |
*BA22.10-P-1001-01R |
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Engine 271 |
*BA22.10-P-1006-01O |
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n Engine 272 |
*BA22.10-P-1001-01S |
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n Engines 611, 612, 642, 646 |
*BA22.10-P-1001-01D |
| 9 |
Detach heat shield from front axle carrier (1) |
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| 10 |
Move front wheels to straight-ahead position and secure steering wheel. |
To do this, swivel the sun visor to one side and insert the
retainer.
The steering wheel must not be turned when the steering coupling is detached, otherwise the clock spring contact will be destroyed. |
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Retainer |
Figure |
| 11 |
Carefully pull steering coupling out of the control valve of the rack-and-pinion steering (predetermined fracture point on control valve) |
Do not use force (hammer, strong lever action) since the lower steering shaft is sensitive to lateral impacts.
Installation:
↓ |
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Turn rack-and-pinion steering to center position and mount steering coupling |
AR46.20-P-0600-01P |
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*BA46.10-P-1001-01E |
| 12 |
Detach retaining plate of oil lines on rack and pinion steering and pull out oil lines |
Seal off line connections using plugs. |
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Set of stop plugs
Installation:
replace O-rings. |
Figure |
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*BA46.20-P-1001-01F |
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Risk of poisoning
caused by swallowing brake fluid. Risk of injury
caused by brake fluid coming into contact with skin and eyes. |
Pour brake fluid only into suitable and appropriately marked containers. Wear protective clothing and eye protection when handling brake fluid. |
AS42.50-Z-0001-01A |
| 13 |
Unscrew brake lines on left and right of brake hose and seal openings |
Seal l off line terminals immediately with stop
plugs. The brake fluid reservoir must not run completely empty. |
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Brake fluid notes |
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AH42.50-P-0001-01A |
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Notes on installing brake hoses |
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AH42.10-P-9406-01A |
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Box wrench bit |
Fig 3 |
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l Set of stop plugs
Installation
: The brake hoses must not be twisted after being tightened (danger of cracking). |
Figure |
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*BA42.10-P-1001-04A |
| 14 |
Detach left front brake pad contact sensor (S10/1) from connector for brake pad wear contact sensor |
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Notes on installing brake pad wear sensor contact sensors |
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AH42.10-P-0003-01A |
| 15 |
Detach plug of contact sensor from floating brake caliper |
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*BA42.10-P-1005-03A |
| 16 |
Remove torsion bar (77). |
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AR32.20-P-0300P |
| 17 |
Installing protective washers to protect brake disk dust shields |
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AR42.00-P-0100-01A |
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Guard plate |
Fig 4 |
| 18 |
Support front subframe (1) |
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AR33.10-P-0100-03P |
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Passenger car transmission platform |
*WE58.40-Z-1018-11A |
| 19 |
Detach suspension strut (11) on left and right of steering knuckle |
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*BA32.25-P-1010-01B |
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*BA32.25-P-1008-01B |
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Remove suspension strut (11) if necessary |
AR32.25-P-1017P |
| 20 |
Separate the rpm sensor connectors on the left and right |
Rpm sensor connectors in wheelhouse behind the suspension strut. |
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| 21 |
Unscrew bolts (1c) of front axle carrier (1) |
The bolts (1c) are self-tapping; pay attention to the following procedure:
- Never
recut the thread in the longitudinal member
- Replace bolts
- Use only original bolts (4 x)
- Do not position the bolts obliquely when screwing in
- Do not use an impact bolt tightener
- Observe tightening torque
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*BA33.10-P-1003-01A |
| 22 |
Lower front axle |
Secure front axle to prevent it falling. |
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| 23.1 |
Measure front axle carrier (1) |
If necessary |
AR40.30-P-0450P |
| 24 |
Install in the reverse order |
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| 25 |
Bleed brake system |
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AR42.10-P-0010P |
| 26 |
Fill power steering pump and bleed |
Except model 203.2 with rear axle level control system code 480
Model 203.2 with rear axle level control system code 480 |
AR46.30-P-0010P |
| 27 |
Perform chassis alignment |
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AR40.20-P-0200P |