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

AR33.30-P-0540MSA

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

18.02.2020

Model

257 with engine 256 with transmission 725.0

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

1

Front axle transmission

2

Radial shaft sealing ring

 Caution

Risk of injury to skin and eyes due to handling of transmission oil. Health risk caused by swallowing transmission oil

Wear protective gloves, protective clothing and safety glasses.
Do not pour transmission oil into beverage bottles.

AS00.40-Z-0001-01A

 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



Remove

1

Remove center and rear lower engine compartment lining.

AR61.20-P-1105FR

2

Unscrew drain screw from front axle differential (1) and drain hypoid gear oil.

Model 257 with engine 256 with transmission 725.0
with code M005 (Vehicles with 4MATIC/all-wheel drive)

Model 257 with engine 256 with transmission 725.0
with code M005 (Vehicles with 4MATIC/all-wheel drive)With VAG 160

AR33.25-P-0300-01LWX

3

Remove right front axle shaft.

AR33.30-P-0620MSA

4

Pull radial shaft sealing ring (2) out of front axle differential (1) using internal extractor, pull-off device and impact extractor.

  Connect the internal extractor and  impact extractor to the threaded rod of the   extraction tool.

 Internal extractor

*203589033300

 Extraction tool

*221589043300

 Impact extractor

*602589003300



Check

5

Check seat of radial shaft sealing ring (2) for damage.

If damage is found,



replace front axle differential (1).

AR33.30-P-0525MSA



Install

6

Install radial shaft sealing ring (2) using drift.

 Replace radial shaft sealing ring (2).

 Mit VAG 160
Drift set

*205589011500

 Mit VAG 175
Drift

*221589041500

7

Lubricate sealing lip of radial shaft sealing ring (2) with transmission oil.



Universal hypoid gear oils (specification 235.7)

BB00.40-P-0235-07A

8

Tighten drain screw.

Model 257 with engine 256 with transmission 725.0
with code M005 (Vehicles with 4MATIC/all-wheel drive)With VAG 175

 Replace drain screw.

 Front axle transmission drain screw

*BA33.30-P-1008-03G

9.1

Fill front axle transmission (1) with hypoid gear oil through the front axle shaft opening.

Model 257 with engine 256 with transmission 725.0
with code M005 (Vehicles with 4MATIC/all-wheel drive)With VAG 175

 Hypoid gear oil

*BF33.30-P-1001-03F

 Hand pump

*210589007100

9.2

Fill front axle differential (1) via opening of filling screw with hypoid gear oil.

Model 257 with engine 256 with transmission 725.0
with code M005 (Vehicles with 4MATIC/all-wheel drive)With VAG 160

AR33.25-P-0300-01LWX

 Replace filling screw.

 Replace drain screw.

Quick-acting adhesive Omnifit 100H (50 g)

*BR00.45-Z-1110-02A

Loctite 7063 (400 ml) cleaning spray

*BR00.45-Z-1046-04A

 Front axle transmission drain screw

*BA33.30-P-1008-03G

 Front axle transmission filling screw

*BA33.30-P-1014-03G

 Hypoid gear oil

*BF33.30-P-1001-03F

 Hand pump

*210589007100

10

Install right front axle shaft.

AR33.30-P-0620MSA

11

Check front axle differential (1) for leak tightness and proper operation.

12

Install center and rear lower engine compartment lining.

AR61.20-P-1105FR

 Front axle gear

Number

Designation

Model 257

BA33.30-P-1008-03G

Front axle transmission drain screw

Nm

20

 Front axle gear

Number

Designation

Model 257

BA33.30-P-1014-03G

Front axle transmission filling screw

M24

Nm

25

 Front axle gear

Number

Designation

Model 257

BF33.30-P-1001-03F

Hypoid gear oil

Filling capacity

Liter

0,55

Universal hypoid gear oil

BB00.40-P-0235-07A

Overview of axle gear oils

BB00.40-P-0231-01A

Axle gear oils

BB00.40-P-0239-72A

Repair materials

Number

Designation

Order number

BR00.45-Z-1046-04A

Loctite 7063 (400 ml) cleaning spray

A 001 986 71 71 09

BR00.45-Z-1110-02A

Quick-acting adhesive Omnifit 100H (50 g)

A 002 989 23 71