Remove/install front axle

AR33.10-P-0100LW

Remove/install front axle

14.04.2020

Model

205

Model

253 (except 253.388/389/988/989)

Modification notes

31.03.2020

Work step inserted.

Step 32

Shown on model 205 except code M005 (Vehicles with 4MATIC/all-wheel drive)

1

Radiator package

20

Strut

2

Tensioning strap

21

Rear radiator mount (with radiator package (1) in rear installation position)

4

Front axle

28

Screw (with radiator package (1) in front installation position)

12

Air duct segments

29

Front radiator mount (with radiator package (1) in front installation position)

Shown on model 205 except code M005 (Vehicles with 4MATIC/all-wheel drive)

4

Front axle

26

Lifting platform

25

Tensioning strap

27

Tensioning strap

Shown on model 205 except code M005 (Vehicles with 4MATIC/all-wheel drive)

3

Wiring harness for rack-and-pinion steering

4

Front axle

22

Electrical connector

23

Electrical connector

24

Rack-and-pinion steering

Shown on model 205 with code M005 (Vehicles with 4MATIC/all-wheel drive)

3

Wiring harness for rack-and-pinion steering

4

Front axle

22

Electrical connector

23

Electrical connector

24

Rack-and-pinion steering

Shown on model 205 except code M005 (Vehicles with 4MATIC/all-wheel drive) on right side of vehicle

5

Diagonal strut

6

Screw

Shown on model 205.4 except code M005 (Vehicles with 4MATIC/all-wheel drive)

8

Diagonal strut

Shown on model 205 except code M005 (Vehicles with 4MATIC/all-wheel drive), with radiator package in rear installation position

4

Front axle

14

Bracket

7

Bolts

15

Screw

10

Screw

16

Bolts

11

Bracket of engine compartment paneling

17

Decoupling element

13

Screw

Shown on model 205 except code M005 (Vehicles with 4MATIC/all-wheel drive), with radiator package in rear installation position

18

Refrigerant line

19

Condenser

B14

Outside temperature sensor

10

Bolts

31

Nuts

32

Struts

 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

 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

 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

 Danger

Risk of fire due to ignition of R1234yf refrigerant on hot components. Risk of poisoning caused by inhaling overheated refrigerant vapors. Risk of injury to skin and eyes caused by contact with escaped R1234yf refrigerant and when working on pressurized parts. Risk of explosion due to formation of ignitable refrigerant/air mixtures

Never perform welding work on or near a closed air conditioning system. No smoking or open flames. Wear safety glasses and protective gloves. Work only in well ventilated rooms. Carry out repair work on the air conditioning system circuit only after the system has been evacuated.

AS83.00-Z-0007-01A

 Warning

Risk of poisoning caused by inhaling overheated refrigerant vapors from an air conditioning system containing R134a. Risk of injury to skin and eyes caused by contact with liquid R134a refrigerant and when working on pressurized parts

Never perform welding work on or near a closed air conditioning system. No smoking or open flames. Wear safety glasses and protective gloves. Work only in well ventilated rooms. Carry out repair work on the air conditioning system circuit only after the system has been evacuated.

AS83.00-Z-0006-01A

Topical note

Information on preventing damage to electronic components due to electrostatic discharge

AH54.00-P-0001-01A

Topical note

Notes on threaded connections with aluminum screws/bolts

AH00.00-P-0006-01RM

Topical note

Notes on self-locking nuts and bolts

AH00.00-N-0001-01A

Topical note

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

AH00.00-P-0020-01A

Topical note

Notes on handling, transport and storage of composite brake disks

AH42.10-P-9406-12LF

Topical note

Notes on handling, transport and storage of ceramic brake disks

AH42.10-P-9406-13A

Topical note

Notes on installation position of condenser

AH83.30-P-0002-01LW

Topical note

Protect air conditioning circuit and components from moisture when carrying out repair work

AH83.30-N-0005-01A

Topical note

Notes on bolted connections with self tapping screws

AH00.00-P-0007-01SF

Notes on safety-relevant components

AH00.00-Z-0019-01A

Notes on handling refrigerant R1234yf

AH83.30-P-0003-02A

Notes on handling refrigerant R134a

AH83.30-N-0003-01A

Notes on AIRmatic

Model 205
with code 489 (AIRMATIC)
Model 253 (except 253.388/389/988/989)
with code 489 (AIR BODY CONTROL)

AH32.22-P-1000-02LW

Notes on repair work on suspension components

AH00.00-P-0100-01A

 

Remove/install

1

Secure vehicle on vehicle lift.

AR00.60-P-1006A

2

Vent pressure in AIRMATIC system using vehicle diagnosis system.

Model 205
with code 489 (AIRMATIC)
Model 253 (except 253.388/389/988/989)
with code 489 (AIR BODY CONTROL)



AD00.00-P-2000-04B

3

Deactivate easy entry and exit feature.

Model 205, 253 (except 253.388/389/988/989)
with code 275 (Driver's seat, electrically adjustable with memory function)

4

Move front wheels to straight-ahead position and fix steering wheel in place with holding device.


Do not turn steering wheel with steering coupling removed.
Otherwise the clock spring contact will be destroyed.

 Retainer device

*129589012100

5

Perform disable for high-voltage on-board electrical system.

Model 253.311/353/354/911/953/954

AR54.10-P-1150LVH

Model 205.012/013/047/053/054/147/212/213/247/253

AR54.10-P-1150LW

6

Discharge air conditioning system.

AR83.30-P-1760LW

7

Mount engine support fixture.

Model 205, 253 (except 253.388/389/988/989)

Model 205, 253 with engine 264

AR01.10-P-2400-17MRI

Model 205 with engine 177
Model 205, 253 with engine 274, 276.8

AR33.10-P-0105LW

Model 205 with engine 651, 654
Model 253 with engine 642, 651, 654, 656

AR33.10-P-0105LWD

Model 205 with engine 626

AR33.10-P-0105OLP

 Aid of helper required.

 Model 205, 253 with engine 264Screw, low-temperature circuit expansion reservoir to crossmember

*BA20.20-P-1002-02B

 Model 205, 253 with engine 264
Adapter kit

*240589013100

 Model 205, 253 with engine 264
Engine lifting device

*240589006100

 Model 205, 253 with engine 264
Adaptation plates

*240589003200

 Model 205, 253 with engine 264
Engine hoist

*205589006100

8

Remove front wheels.

AR40.10-P-1102A

9

Remove engine compartment lining at front, center and rear.

AR61.20-P-1105LW

10

Secure radiator package (1) against falling down using tensioning strap (2).


Do not tighten tensioning strap (2) too far.
Otherwise the components can be damaged.

11

Detach refrigerant line (18) from condenser (19), hang to one side towards inside and seal connections.



Compressor oils (specification 362.1)

BB00.40-P-0362-01A

 Installation: Replace sealing rings and moisten with compressor oil.

 Nut, line to condenser

*BA83.30-P-1002-01Q

 Assembly tool

*000589936300

 Record plug

*129589009100

12

Remove left and right screw (28), fold up cooler mounts at front (29) and remove from struts (20).

If the radiator package (1) is in the front installation position.

 Installation: Make sure that the front radiator mounts (29) are correctly seated.

13

Remove front axle shafts.

Model 205, 253 (except 253.388/389/988/989) with transmission 725.0
with code M005 (Vehicles with 4MATIC/all-wheel drive)
Model 253 (except 253.388/389/988/989) with transmission 724.2

AR33.30-P-0620LW

Model 205 with transmission 722.96/97

AR33.30-P-0620LWY

14

Remove right front brake wear sensor (S10/2) and hang to one side.

Model 205 with transmission 716, 722 (except 722.96/97), 724, 725
Model 253 (except 253.388/389/988/989)

 Bolt, brake wear sensor to brake caliper

*BA42.10-P-1002-10W

15.1

Remove brake calipers with brakepads and attach to the vehicle with the brake hose attached and free of tension.

Model 205 with transmission 716, 722 (except 722.96/97), 724, 725
Model 253 (except 253.388/389/988/989)
For fixed-caliper brake.

Model 205 with transmission 716, 722 (except 722.96/97), 724, 725
4-piston fixed-caliper brakeModel 253 (except 253.388/389/988/989)4-piston fixed-caliper brake

AR42.10-P-0070LWA

Model 205 with transmission 716, 722 (except 722.96/97), 724, 725
with code B06 (Silver brake calipers)
except code B07 (AMG - ceramic brake system)
except code U70 (red-painted brake callipers)
6-piston fixed-caliper brakeModel 253 (except 253.388/389/988/989)
with code B06 (AMG high-performance braking system)
except code B07 (AMG - ceramic brake system)
except code U70 (AMG high-performance composite braking system)6-piston fixed-caliper brake

AR42.10-P-0070LWB

Model 205 with transmission 716, 722 (except 722.96/97), 724, 725
with code B07 (AMG - ceramic brake system)
except code B06 (Silver brake calipers)
except code U70 (red-painted brake callipers)
6-piston fixed-caliper brakeModel 253 (except 253.388/389/988/989)
with code B07 (AMG - ceramic brake system)
except code B06 (AMG high-performance braking system)
except code U70 (AMG high-performance composite braking system)6-piston fixed-caliper brake

AR42.10-P-0070LWC

Model 205 with transmission 716, 722 (except 722.96/97), 724, 725
with code U70 (red-painted brake callipers)
except code B06 (Silver brake calipers)
except code B07 (AMG - ceramic brake system)
6-piston fixed-caliper brakeModel 253 (except 253.388/389/988/989)
with code U70 (AMG high-performance composite braking system)
except code B06 (AMG high-performance braking system)
except code B07 (AMG - ceramic brake system)6-piston fixed-caliper brake

AR42.10-P-0070LWD

15.2

Detach brake calipers with brake caliper supports and fasten to vehicle free of tension with brake hose connected.

Model 205 with transmission 716, 722 (except 722.96/97), 724, 725
Model 253 (except 253.388/389/988/989)
With floating caliper brake.

Model 205 with transmission 716, 722 (except 722.96/97), 724, 725
1-piston floating caliper brakeModel 253 (except 253.388/389/988/989)1-piston floating caliper brake

AR42.10-P-0070LW

16

Detach suspension struts from spring links.

Model 205
except code 489 (AIRMATIC)
Model 253 (except 253.388/389/988/989)
except code 489 (AIR BODY CONTROL)

AR32.25-P-1017LW

Model 205
with code 489 (AIRMATIC)
Model 253 (except 253.388/389/988/989)
with code 489 (AIR BODY CONTROL)

AR32.25-P-1017LWL

17

Detach brackets of electrical wiring harnesses from spring links and axle carrier, and place to one side.

Model 205
with code M005 (Vehicles with 4MATIC/all-wheel drive)
Model 253 (except 253.388/389/988/989)

18

Remove torsion bar linkages from spring links.

Model 205
except code M005 (Vehicles with 4MATIC/all-wheel drive)

AR32.35-P-3328LW

19

Remove left and right line bracket of rotational speed sensors of front axle (4) from front axle carrier and hang to one side with connected electric lines.

AR42.30-P-0712LW

20

Remove steering knuckles from upper transverse control arms and secure to tension strut with tensioning straps (25).

Model 205 with transmission 716, 722 (except 722.96/97), 724, 725
Model 253 (except 253.388/389/988/989)


The steering knuckles must not fold outwards after they are detached from the upper transverse control arms.
Otherwise ball joints may be damaged.


Counterhold the ball heads and do not use an impact wrench/driver.
Otherwise the ball heads or the steering knuckles will be damaged.

 Model 205, 253 (except 253.388/389/988/989) with transmission 725.0
Model 253 (except 253.388/389/988/989) with transmission 724.2
with code M005 (Vehicles with 4MATIC/all-wheel drive)
Installation: Fasten the steering knuckles to the upper transverse control arms with cable ties only.

 Nut, steering knuckle to transverse control arm

*BA33.20-P-1006-01U

21

Disconnect steering coupling.

AR46.10-P-8000LW

22

Release and disconnect electrical connectors (22, 23).

23

Detach complete rack-and-pinion steering wiring harness (3) from rack-and-pinion steering (24) and front axle (4), and place to one side.

24

Remove the compressor.

Model 205
with code 489 (AIRMATIC)
Model 253 (except 253.388/389/988/989)
with code 489 (AIR BODY CONTROL)

AR32.22-P-2001LW

25

Remove screws (6) and remove left and right diagonal struts (5).

 Mount, support (strut)

*BA33.10-P-1002-01Q

26

Remove diagonal strut (8).

Model 205.4

 Bolt, front diagonal strut to longitudinal member

*BA61.10-P-1007-01L

 Bolt, front diagonal strut to front axle carrier/torsion bar bearing shell/radiator mounting console

*BA61.10-P-1006-01L

27

Remove screws (7) of engine mounts at front axle (4).

Model 205, 253 (except 253.388/389/988/989)

Model 253.992/993 with engine 780

AR22.10-P-1102RFW

Model 253.992/993 with engine 780

AR22.10-P-1101RFW

Model 253 with engine 276.8

AR22.10-P-1105MMX

Model 253 with engine 276.8

AR22.10-P-1104MMX

Model 253 with engine 274.9
with code M005 (Vehicles with 4MATIC/all-wheel drive)

AR22.10-P-4330LWD

Model 253 with engine 274.9
except code M005 (Vehicles with 4MATIC/all-wheel drive)

AR22.10-P-4330LWC

Model 205 with engine 651

AR22.10-P-1260LWB

Model 205 with engine 626

AR22.10-P-1260OLP

Model 205 with engine 264, 274.9
except code M005 (Vehicles with 4MATIC/all-wheel drive)
Model 253 with engine 264
except code M005 (Vehicles with 4MATIC/all-wheel drive)

AR22.10-P-4330LWA

Model 205 with engine 264, 274.9
with code M005 (Vehicles with 4MATIC/all-wheel drive)
Model 253 with engine 264
with code M005 (Vehicles with 4MATIC/all-wheel drive)

AR22.10-P-4330LWB

Model 205 with engine 276.8

AR22.10-P-4330MMV

Model 205 with engine 177

AR22.10-P-4330MNA

Model 253 with engine 642
Model 253 with engine 651

AR22.10-P-4330RF

Model 205, 253 with engine 654
with code M005 (Vehicles with 4MATIC/all-wheel drive)

AR22.10-P-4330OLI

Model 205, 253 with engine 654
except code M005 (Vehicles with 4MATIC/all-wheel drive)

AR22.10-P-4330OLL

Model 253 (except 253.388/389/988/989) with engine 656

AR22.10-P-4330OIF

28

Lift engine using engine support fixture until the guide pins of the engine mount fully extend out of the axle carrier.

 Aid of helper required.

29

Position lifting platform (26) at front axle (4) and secure with tensioning strap (27).



000 588 03 62 00 Lifting platform

WS01.00-P-0091A

30

Detach engine compartment lining brackets (11).

31

Remove screws (10) of front axle (4).

 Bolt, front axle carrier to longitudinal member

*BA33.10-P-1001-01Q

32

Remove nuts (31) and remove struts (32).

Model 253 (except 253.388/389/988/989) with engine 264

 Nut, strut for front axle carrier to longitudinal member

*BA33.10-P-1004-01Q

33

Loosen air duct segments (12) and fold inwards.

34

Remove screws (13) of brackets (14).

35

Slacken screws (15) of brackets (14).

36

Lower front axle (4) slightly.



000 588 03 62 00 Lifting platform

WS01.00-P-0091A


Observe radiator package (1) when lowering.
Otherwise it may be damaged.

 Aid of helper required.

37

Mark struts (20) relative to front axle (4) using colored pencil.

38

Remove low-temperature circuit circulation pump 1 (M43/6) with holder from rear right cooler mount (21) and hang to one side with connected lines.

If the radiator package (1) is located in the rear installation position and low-temperature circuit circulation pump 1 (M43/6) is installed.

39.1

Unscrew left and right screws (16).

If the radiator package (1) is in the front installation position.

 Bolt, strut (impact absorber) to front axle carrier

*BA33.10-P-1003-01Q

39.2

Unscrew left and right screws (16) and remove rear cooler mounts (21).

If the radiator package (1) is in the rear installation position.

 Make sure that the decoupling elements (17) are seated correctly.

 Bolt, strut (impact absorber) to front axle carrier

*BA33.10-P-1003-01Q

40

Push spring links downward and position suspension struts in front of spring links.


Carefully position the suspension struts in front of the spring control arms.
Otherwise the suspension strut joints can be damaged.

 Aid of helper required.

41

Pull front axle (4) slightly to rear, turn brackets (14) to side and remove struts (20).

 Installation: Note the previously made markings when inserting the struts (20).

 Aid of helper required.

42

Fully lower front axle (4).



000 588 03 62 00 Lifting platform

WS01.00-P-0091A


Carefully lower front axle (4).
Otherwise adjacent components may be damaged.

 Aid of helper required.

43

Install in the reverse order.

44

Perform chassis alignment.

AR40.20-P-0200LW

 Engine radiator, coolant hoses and lines

Number

Designation

Engine 264

BA20.20-P-1002-02B

Screw, low-temperature circuit expansion reservoir to crossmember

Nm

8

 Front axle carrier

Number

Designation

Model 205

Model 253

BA33.10-P-1001-01Q

Bolt, front axle carrier to longitudinal member

Nm

180

180

 Front axle carrier

Number

Designation

Model 205

Model 253

BA33.10-P-1002-01Q

Mount, support (strut)

Nm

110

110

 Front axle carrier

Number

Designation

Model 205

Model 253

BA33.10-P-1003-01Q

Bolt, strut (impact absorber) to front axle carrier

Nm

23

23

 Front axle carrier

Number

Designation

Model 253

BA33.10-P-1004-01Q

Nut, strut for front axle carrier to longitudinal member

Nm

110

 Wheel control, hub

Number

Designation

Model 205

Model 253

BA33.20-P-1006-01U

Nut, steering knuckle to transverse control arm

Stage 1

Nm

50

50

Stage 2

°

45

45

 Front axle brake caliper

Number

Designation

Model 205

Model 253

BA42.10-P-1002-10W

Bolt, brake wear sensor to brake caliper

Nm

8

8

 Frame floor assembly

Number

Designation

Model 205

BA61.10-P-1006-01L

Bolt, front diagonal strut to front axle carrier/torsion bar bearing shell/radiator mounting console

Nm

50

 Frame floor assembly

Number

Designation

Model 205

BA61.10-P-1007-01L

Bolt, front diagonal strut to longitudinal member

Nm

50

 Air conditioning

Number

Designation

Model 205

Model 253

BA83.30-P-1002-01Q

Nut, line to condenser

Nm

12

12