Remove/install front axle shafts

AR33.30-P-0620MRH

Remove/install front axle shafts

15.03.2019

Model

257 with engine 264 with transmission 725.0

with code M005 (4MATIC)

02

Slide hammer puller

03

Pulling device

1

Front axle shaft

1s

Retaining ring

2

Retaining ring

4

Intermediate shaft

 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

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 front left or front right wheel and tire assembly.

AR40.10-P-1102A

2

Unscrew screw of front axle shaft (1) on wheel hub.

 The aid of a helper is required to remove the screw of the front axle shaft (1).

3

Detach steering knuckle from upper transverse control arm.

AR33.25-P-0400FR

4

Remove front axle shaft (1) from steering knuckle.

5

Remove front axle shaft (1) from front axle differential and intermediate shaft (4) using impact extractor (02) and pull-off device (03).


Ensure cleanliness when performing all work on the front axle differential.
Otherwise operation of the front axle transmission will be impaired.

 Extraction tool

*221589043300

 Impact extractor

*602589003300

If, when removing on the left side, the front axle shaft (1) is stuck.



Remove retaining ring (2) at intermediate shaft (4) and then remove front axle shaft (1) together with intermediate shaft (4). Otherwise the oil pan may be damaged.

6

Fix steering knuckle on upper transverse control arm.

7.1

Remove retaining ring from front axle shaft(1).

When removing the right side.

7.2

Remove retaining ring(1s) of intermediate shaft(4).

When removing the left side.

8

Remove radial shaft sealing ring.

When removing the right side.

Install new radial sealing ring on outside right of front axle gear

AR33.30-P-0540MRH



Install

9

Check dust boots of front axle shafts(1).

If damage is found,



Replace front axle shaft.

10

Install radial shaft sealing ring.

When installing the right side.

AR33.30-P-0540MRH

 Replace radial shaft sealing ring.

11.1

Install retaining ring(1s) of intermediate shaft(4).

When installing the left side.

 Replace retaining ring (1s) of intermediate shaft (4).

 Apply light coating of grease to retaining ring (1s).

Klueber Microlube GNY 202

*BR00.45-Z-1071-06A

11.2

Install retaining ring of front axle shaft(1).

When installing the right side.

 Replace retaining ring of front axle shaft (1).

 Apply light coating of grease to retaining ring.

Klueber Microlube GNY 202

*BR00.45-Z-1071-06A

12

Install intermediate shaft(4).

If necessary.

AR33.30-P-0625MRH

 Lightly grease gearing of intermediate shaft(4).

Klueber Microlube GNY 202

*BR00.45-Z-1071-06A

13

Press front axle shaft(1) into front axle differential and intermediate shaft(4).

14

Release fixing and insert front axle shaft (1) into steering knuckle.

15

Attach steering knuckle to upper transverse control arm.

 Replace nut.

 Nut, steering knuckle to transverse control arm

*BA33.20-P-1006-01U

16

Tighten screw of front axle shaft (1) on wheel hub.

 Replace bolt.

 The aid of a helper is required to tighten the screw of the front axle shaft (1).

 Screw/bolt, front axle shaft to wheel hub

*BA33.30-P-1001-02H

17

Attach front left or front right wheel and tire assembly.

AR40.10-P-1102A

18

Check front axle differential for leaktightness and proper operation.

If problems exist,



Rectify problem.

 Wheel control, hub

Number

Designation

Model 257

BA33.20-P-1006-01U

Nut, steering knuckle to transverse control arm

Stage 1

Nm

50

Stage 2

°

45

 Front axle shaft

Number

Designation

Model 257

BA33.30-P-1001-02H

Screw/bolt, front axle shaft to wheel hub

Stage 1

Nm

160

Stage 2

loosen approx. 90°

Stage 3

Nm

220

Stage 4

°

45

Repair materials

Number

Designation

Order number

BR00.45-Z-1071-06A

Klueber Microlube GNY 202

A 001 989 44 51 10