Remove/install front axle

AR33.10-P-0100MFA

Remove/install front axle

18.12.2019

Model

118, 177, 247

Modification notes

18.07.2019

Remove retaining clips (19).

Operation step 7.

18.07.2019

Remove holders (22, 23).

Operation steps 9 and 10.

18.07.2019

Remove control unit with holder.

Operation steps 16.1 and 16.2.

18.07.2019

Remove struts.

Operation step 18.

17.12.2019

Release left and right underfloor paneling.

Operation step 17.

17.12.2019

Remove retaining clips.

Operation step 8.

Shown on model 177 with engine 608

1

Front axle

2

Torsion bar linkage

3

Bolts

4

Lower front wheel arch cover

5

Bolts

6

Front support

7

Lower engine stabilizer mount

8

Left supporting joint

9

Right supporting joint

10

Bolts

12

Screw

13

Bolts

14

Bolts

15

Bolts

16

Screw

17

Bracket

Shown on model 177.0 with engine 139 and code 459 (Steel suspension with adjustable damping)

1

Front axle

10

Bolts

19

Mounting clip

2

Torsion bar linkage

12

Screw

22

Bracket

5

Bolts

13

Bolts

23

Bracket

6

Front support

14

Bolts

24

Screw

7

Lower engine stabilizer mount

15

Bolts

25

Screw

8

Left supporting joint

16

Bolts

26

Struts

9

Right supporting joint

17

Bracket

27

Bolts

Shown on model 177 with engine 608

20

Soundproofing

 Warning

Risk of injury. Skin or eye injuries may result when handling hot or glowing objects.

Wear protective gloves, protective clothing and safety glasses, if necessary.

AS00.00-Z-0002-01A

 Caution

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

 Danger

Risk of death caused by vehicle slipping or toppling off of the lifting platform.

Align vehicle between vehicle lift columns and position the four support plates at the vehicle lift support points specified by the vehicle manufacturer.

AS00.00-Z-0010-01A

 Warning

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

Topical note

Notes on threaded connections fastened using a tightening angle-based tightening process

AH00.00-P-0020-01A

Topical note

Notes on bolted connections with self tapping screws

AH00.00-P-0007-01SF

Topical note

Notes on self-locking nuts and bolts

AH00.00-N-0001-01A

Topical note

Information on preventing damage to electronic components due to electrostatic discharge

AH54.00-P-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 safety-relevant components

AH00.00-Z-0019-01A

 

Remove/install

1

Switch off ignition and store transmitter key outside of transmitter range (min. 2 m).

2

Remove front wheel and tire assemblies.

AR40.10-P-1102MFA

3

Detach left supporting joint (8) and right supporting joint (9) from wheel carrier.

AR33.20-P-0510MFA

4

Detach torsion bar linkages (2) from torsion bar.

 Nut, torsion bar linkage to suspension strut/stabilizer bar

*BA32.35-P-1002-02A

5

Remove left and right front fender liners.

AR88.10-P-1301MFA

6

Remove screws (3) and remove lower front wheel arch covers (4).

Model 118, 177, 247
except code 772 (AMG styling - Front spoiler, side skirts)

7

Remove retaining clips (19).

Model 118, 177, 247
with code 772 (AMG styling - Front spoiler, side skirts)

 Dismantling tool

*000589956300

8

Unscrew screws (5) or remove retaining clips, and remove front support (6).

 Dismantling tool

*000589956300

9

Remove holders (23) from lower control arms.

Model 118, 177, 247
with code 459 (Steel suspension with adjustable damping)
Model 118, 177, 247
with code 640 (SAE dynamic LED headlamps, right-hand traffic)
Model 118, 177, 247
with code 641 (Dynamic LED headlamps, left-hand traffic)
Model 118, 177, 247
with code 642 (Dynamic LED headlamps, right-hand traffic)

10

Remove screws (24), remove holders (22) from front axle (1) and secure against falling down.

Model 118, 177, 247
with code 459 (Steel suspension with adjustable damping)
Model 118, 177, 247
with code 640 (SAE dynamic LED headlamps, right-hand traffic)
Model 118, 177, 247
with code 641 (Dynamic LED headlamps, left-hand traffic)
Model 118, 177, 247
with code 642 (Dynamic LED headlamps, right-hand traffic)


Do not kink or stretch the electric lines.
Otherwise damage will occur.

 Screw, acceleration sensor/steer angle sensor holder to front axle carrier

*BA33.10-P-1003-01R

11

Remove lower engine stabilizer mount (7).

Model 118, 177, 247.7 with engine 139

AR22.10-P-1155MFG

Model 118, 177, 247 with engine 260, 282

AR22.10-P-1155MFC

Model 118, 177, 247 with engine 608, 654

AR22.10-P-1155MFE

12

Remove side noise encapsulation (20) from front axle (1).

If installed.

13

Remove nuts of screws (10) and remove screws (10).

 Installation:
Position precisely. The rack-and-pinion steering must not slip on the front axle (1).
Otherwise the elastomer bearings of the rack-and-pinion steering could be trapped or damaged.

 Installation: Replace screws (10) and nuts.
Observe information sheet for repair kit.
Fit assembly aid from repair kit onto screws (10) and insert screws (10) into front axle (1) from below. Then position rack-and-pinion steering on front axle (1) from above.

 Nut, rack-and-pinion steering to front axle carrier

*BA46.20-P-1001-01T

14

Secure rack-and-pinion steering using suitable means to prevent it falling.

15

Detach bracket (17) of exhaust system from front axle (1).

 Model 118, 177, 247.7 with engine 139Nut, center exhaust system holder to front axle carrier

*BA49.10-P-1002-02X

 Model 118, 177, 247 with engine 654Nut, front exhaust system holder to front axle carrier

*BA49.10-P-1006-02V

 Model 118, 177, 247 with engine 608Nut, center exhaust system holder to front axle carrier

*BA49.10-P-1004-02R

 Model 118, 177, 247 with engine 260, 282Nut, center exhaust system holder to front axle carrier

*BA49.10-P-1007-02Q

16.1

Remove control unit of temperature sensor upstream of gasoline particulate filter (B163/4) with holder from front axle (1) and secure it on vehicle free of tension with line connected to prevent it from falling down.

Model 177, 247 with engine 260, 282
with code 598 (Gasoline particulate filter (OPF) with sensor system)
except code M005 (Vehicles with 4MATIC/all-wheel drive)

AR49.20-P-0009MFD


Do not crush or kink or subject lines to tension.
This will result in damage to the lines which may impair their functional capability.

 The temperature sensor upstream of the gasoline particulate filter (B163/4) remains in the exhaust system and is permanently connected to the control unit.

 Screw, control unit holder to front axle carrier

*BA49.10-P-1011-02Q

16.2

Remove NOx sensor control unit downstream of SCR catalytic converter (N37/8) with holder from front axle (1) and secure it on vehicle free of tension with line connected to prevent it from falling down.

Model 118, 177, 247 with engine 608

AR49.20-P-2062MFE


Do not crush or kink or subject lines to tension.
This will result in damage to the lines which may impair their functional capability.

 The NOx sensor downstream of the SCR catalytic converter (N37/8b1) remains in the exhaust system and is permanently connected to the control unit of the NOx sensor downstream of the SCR catalytic converter (N37/8).

 Screw, control unit holder to front axle carrier

*BA49.10-P-1008-02R

17

Detach left and right underfloor paneling until front axle (1) can move freely.

AR61.30-P-1001MFA

18

Remove screws (27) and remove struts (26).

Model 118, 177, 247 with engine 260
with code M016 (Uprated engine)
Model 118, 177, 247.7 with engine 139

 Installation: Replace screws of transverse control arm bearing on front axle carrier.

 Mount, support (strut)

*BA33.10-P-1002-01R

 Screw/bolt, transverse control arm bearing to front axle carrier

*BA33.15-P-1002-01F

19

Remove screws (12).

 Installation: Replace bolts (12).

 Screw/bolt, transverse control arm bearing to longitudinal member

*BA33.15-P-1003-01F

20

Remove screw (25) and remove holder from right connecting carrier.

Model 118, 177, 247 with engine 260, 282, 608, 654
with code 228 (Additional warm water heating)
Model 118, 177, 247.7 with engine 139

 Screw, holder to connecting carrier

*BA62.30-P-1010-02O

21

Remove screws (13, 14) and remove connecting carrier from vehicle.

 Bolt, connecting carrier to front axle carrier/radiator support

*BA62.30-P-1003-02O

22

Remove screw/bolts (15).

 Bolt, front-axle carrier to body

*BA33.10-P-1001-01R

23

Support front axle (1) with lifting platform and major assembly mount (universal).



000 588 03 62 00 Lifting platform

WS01.00-P-0091A

24

Remove screws (16) and lower front axle (1).

 Bolt, front-axle carrier to body

*BA33.10-P-1001-01R

25

Install in the reverse order.

26

Perform chassis alignment.

AR40.20-P-0200MFA

 Front axle stabilizer bar

Number

Designation

Model 118, 177, 247

BA32.35-P-1002-02A

Nut, torsion bar linkage to suspension strut/stabilizer bar

M12

Nm

105

 Front axle carrier

Number

Designation

Model 118, 177, 247

BA33.10-P-1001-01R

Bolt, front-axle carrier to body

M12

Nm

100

M14

Stage 1

Nm

200

Stage 2 = loosen screws

°

180

Stage 3

Nm

200

 Front axle carrier

Number

Designation

Model 118, 177, 247

BA33.10-P-1002-01R

Mount, support (strut)

Nm

45

 Front axle carrier

Number

Designation

Model 118, 177, 247

BA33.10-P-1003-01R

Screw, acceleration sensor/steer angle sensor holder to front axle carrier

Nm

10

 Trailing arms, transverse control arms

Number

Designation

Model 118, 177, 247

BA33.15-P-1002-01F

Screw/bolt, transverse control arm bearing to front axle carrier

M10

Stage 1

Nm

50

Stage 2

°

90

 Trailing arms, transverse control arms

Number

Designation

Model 118, 177, 247

BA33.15-P-1003-01F

Screw/bolt, transverse control arm bearing to longitudinal member

M10

Stage 1

Nm

60

Stage 2

°

45

 Steering gear

Number

Designation

Model 118, 177, 247

BA46.20-P-1001-01T

Nut, rack-and-pinion steering to front axle carrier

Stage 1

Nm

40

Stage 2

°

180

 Exhaust system

Number

Designation

Engine 139 in model 118, 177, 247

BA49.10-P-1002-02X

Nut, center exhaust system holder to front axle carrier

Nm

20

 Exhaust system

Number

Designation

Model 247 with engine 608

Model 118 with engine 608

BA49.10-P-1004-02R

Nut, center exhaust system holder to front axle carrier

M8

Nm

20

20

 Exhaust system

Number

Designation

Model 177 with engine 608

BA49.10-P-1004-02R

Nut, center exhaust system holder to front axle carrier

M8

Nm

20

 Exhaust system

Number

Designation

Engine 654 in model 118

Engine 654 in model 177

BA49.10-P-1006-02V

Nut, front exhaust system holder to front axle carrier

M8

Nm

20

20

 Exhaust system

Number

Designation

Engine 654 in model 247

BA49.10-P-1006-02V

Nut, front exhaust system holder to front axle carrier

M8

Nm

20

 Exhaust system

Number

Designation

Model 118 with engine 260

Model 118 with engine 282

BA49.10-P-1007-02Q

Nut, center exhaust system holder to front axle carrier

M8

Nm

20

20

 Exhaust system

Number

Designation

Model 177 with engine 260

Model 177 with engine 282

BA49.10-P-1007-02Q

Nut, center exhaust system holder to front axle carrier

M8

Nm

20

20

 Exhaust system

Number

Designation

Model 247 with engine 260

Model 247 with engine 282

BA49.10-P-1007-02Q

Nut, center exhaust system holder to front axle carrier

M8

Nm

20

20

 Exhaust system

Number

Designation

Model 247 with engine 608

Model 118 with engine 608

BA49.10-P-1008-02R

Screw, control unit holder to front axle carrier

Nm

5

5

 Exhaust system

Number

Designation

Model 177 with engine 608

BA49.10-P-1008-02R

Screw, control unit holder to front axle carrier

Nm

5

 Exhaust system

Number

Designation

Model 177 with engine 260

Model 177 with engine 282

BA49.10-P-1011-02Q

Screw, control unit holder to front axle carrier

Nm

5

5

 Exhaust system

Number

Designation

Model 247 with engine 260

Model 247 with engine 282

BA49.10-P-1011-02Q

Screw, control unit holder to front axle carrier

Nm

5

5

 Frond end with front reinforcement

Number

Designation

Model 118

Model 177

BA62.30-P-1003-02O

Bolt, connecting carrier to front axle carrier/radiator support

M8

Nm

16

16

 Frond end with front reinforcement

Number

Designation

Model 247

BA62.30-P-1003-02O

Bolt, connecting carrier to front axle carrier/radiator support

M8

Nm

16

 Frond end with front reinforcement

Number

Designation

Model 118

Model 177

BA62.30-P-1010-02O

Screw, holder to connecting carrier

M6

Nm

6

6

 Frond end with front reinforcement

Number

Designation

Model 247

BA62.30-P-1010-02O

Screw, holder to connecting carrier

M6

Nm

6