Remove/install torque strut at front axle

AR33.15-P-0160FRA

Remove/install torque strut at front axle

11.01.2018

Model

257

with code M005 (4MATIC)

Shown on left side of vehicle

1

Strut rod

5

Front axle carrier

2

Nut

6

Front axle shaft

3

Nut

7

Screw

4

Steering knuckle

Topical note

Notes on handling, transport and storage of composite brake disks

AH42.10-P-9406-12LF

Topical note

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

AH00.00-P-0020-01A

Topical note

Notes on self-locking nuts and bolts

AH00.00-N-0001-01A

Notes on repair work on suspension components

AH00.00-P-0100-01A



Remove

1

Remove center and front engine compartment lining

AR61.20-P-1105FR

2

Remove left or right front wheel

AR40.10-P-1102A

3

Unscrew nut (2) from strut rod (1)


The ball head must be counterheld and an impact wrench/driver must not be used.
Otherwise the ball head or steering knuckle (4) becomes damaged.

4.1

Turn steering completely to the right

When removing the left strut rod (1).

4.2

Turn steering completely to the left

When removing the right strut rod (1).

5

Remove strut rod (1) from steering knuckle (4)

6

Unscrew nut (3), remove bolt (7) and remove strut rod (1) from front axle carrier (5)



Check

7

Check seal bellows and ball head of strut rod (1) for damage

If damage is present



Replace strut rod (1).

8.1

Check whether an elastomer bearing is installed in the previously installed strut rod (1) for caster correction.

When replacing the strut rod (1).

 The elastomer bearing for caster correction has an off-center bearing core.

If an elastomer bearing for caster correction is installed.



Remove elastomer bearing of new strut rod (1) and install a corresponding elastomer bearing for caster correction.

AR33.15-P-0163-01FR

 Plate

*202589044307

 Extraction and insertion tool

*222589034300

 Extraction and installation tool

*221589004300

8.2

Check elastomer bearing in the strut rod (1) for damage

When reusing the strut rod (1).

Evaluation of elastomer bearings

AH00.10-P-0001-01A

 The neutral elastomer bearing has a central bearing core.
The elastomer bearing for caster correction has an off-center bearing core.

In the event of damage, if a neutral (genuine) elastomer bearing is installed.



Replace strut rod (1).

In the event of damage, if an elastomer bearing is installed for caster correction.



Replace elastomer bearing of strut rod (1) according to the previous variant.

AR33.15-P-0163-01FR

 Plate

*202589044307

 Extraction and insertion tool

*222589034300

 Extraction and installation tool

*221589004300



Install

9

Position strut rod (1) in front axle carrier (5) and insert screw (7)

10.1

Turn steering completely to the left

When installing right strut rod (1).

10.2

Turn steering completely to the right

When installing left strut rod (1).

11

Install strut rod (1) in steering knuckle (4) and tighten nut (2)

 Nut, strut rod to steering knuckle

*BA33.20-P-1003-01U

12

Tighten nut (3)

 Bolt, strut rod to front axle carrier

*BA33.20-P-1004-01U

13

Attach left or right front wheel

AR40.10-P-1102A

14

Install center and front engine compartment paneling

AR61.20-P-1105FR

 Wheel control, hub

Number

Designation

Model 257

BA33.20-P-1003-01U

Nut, strut rod to steering knuckle

Nm

250

 Wheel control, hub

Number

Designation

Model 257

BA33.20-P-1004-01U

Bolt, strut rod to front axle carrier

Stage 1

Nm

120

Stage 2

°

180