Remove/install actuator motor for differential lock

AR35.40-P-7401MFC

Remove/install actuator motor for differential lock

06.03.2020

Model

118, 177, 247 with engine 260, 282, 654

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

Modification notes

13.02.2020

Rear axle differential filling capacity

Model 118 (except 118.353/354/653/654) model 177 (except 177.053/054) model 247 (except 247.753/754)

BF35.31-P-1001-02F

1

Screw

2

Screw

3

Screw

4

Screw

5

Rear axle gear

M46/3

Rear axle differential drive unit

 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 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

 

Remove/install

1

Lift vehicle with vehicle lift.

AR00.60-P-1006A

 Installation: Only lower the vehicle after checking the oil level in the rear axle differential (5).

2

Remove rear axle carrier trim.

Model 118, 177, 247 with engine 260
with code M005 (Vehicles with 4MATIC/all-wheel drive)
with code U55 (Multi-link axle)
except code M016 (Uprated engine)
Model 118, 177, 247 with engine 282, 654
with code M005 (Vehicles with 4MATIC/all-wheel drive)
with code U55 (Multi-link axle)

AR61.30-P-0050MFA

3

Clean area surrounding rear axle differential drive unit (M46/3).

Assembly cleaner

*BR00.45-Z-1028-04A

4

Release and disconnect electrical connector of rear axle differential drive unit (M46/3).

5

Unscrew screws (1, 2, 3, 4) and remove rear axle differential drive unit (M46/3) downward.

 Installation: Tighten screws (1, 2, 3, 4) in numerical sequence.
Replace sealing ring on rear axle differential drive unit (M46/3).

 Bolt, actuator motor to rear axle differential

*BA35.31-P-1004-07A

6

Clean contact surface on rear axle differential (5).

Assembly cleaner

*BR00.45-Z-1028-04A

7

Install in the reverse order.



Check

8

Check and correct oil level in rear axle differential (5).

AR35.31-P-0520-08MFC

 Rear axle differential filling capacity

*BF35.31-P-1001-02F

Sealant, Omnifit 100H (50 g)

*BR00.45-Z-1061-01A

Loctite 7063 (400 ml) cleaning spray

*BR00.45-Z-1046-04A

 Filling screw/drain screw to housing cover at front/side

*BA35.31-P-1005-07A

9

Lower vehicle with vehicle lift.

AR00.60-P-1006A

10

Check rear axle differential drive unit (M46/3) for proper operation.

 Rear axle gear

Number

Designation

Model 118

Model 177

BA35.31-P-1004-07A

Bolt, actuator motor to rear axle differential

M6

Nm

8

8

 Rear axle gear

Number

Designation

Model 247

BA35.31-P-1004-07A

Bolt, actuator motor to rear axle differential

M6

Nm

8

 Rear axle gear

Number

Designation

Model 118

Model 177

BA35.31-P-1005-07A

Filling screw/drain screw to housing cover at front/side

Nm

35

35

 Rear axle gear

Number

Designation

Model 247

BA35.31-P-1005-07A

Filling screw/drain screw to housing cover at front/side

Nm

35

 Rear axle gear

Number

Designation

Model 118 (except 118.353/354/653/654)
Model 177 (except 177.053/054)
Model 247 (except 247.753/754)

BF35.31-P-1001-02F

Rear axle differential filling capacity

Rear axle differential 150

Liter

0,6

Specified gear oils - overview

BB00.40-P-0231-01A

Approved axle gear oils

BB00.40-P-0235A

Repair materials

Number

Designation

Order number

BR00.45-Z-1028-04A

Assembly cleaner

A 000 986 56 01

BR00.45-Z-1046-04A

Loctite 7063 (400 ml) cleaning spray

A 001 986 71 71 09

BR00.45-Z-1061-01A

Sealant, Omnifit 100H (50 g)

A 002 989 23 71