Remove/install rear axle drive shaft

AR35.30-P-0100RFW

Remove/install rear axle drive shaft

30.11.2018

Model

253.992/993

2

Camber strut

5

Strut rod

37m

Boot

3

Thrust arm

7

Steering knuckle

50

Axle drive module

4

Tie rod

37

Rear axle drive shaft

37o

Retaining 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

 Danger

Risk of explosion caused by escaping hydrogen or overheating of the fuel tanks when working on the hydrogen system. Risk of frostbite to body parts caused by escaping gas and by touching component parts carrying gas when emptying fuel tanks. Risk of asphyxiation caused by inhalation of air diluted by hydrogen. Risk of burn injuries by coming into contact with an invisible pale blue hydrogen flame.

AS00.00-Z-0030-01B

 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

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

Topical note

Notes on fuel cell system

AH00.00-P-0022-01RFW

Notes on safety-relevant components

AH00.00-Z-0019-01A

Notes on repair work on suspension components

AH00.00-P-0100-01A

 

Remove/install

1

Ensure that the requirements for driving into the workshop are fulfilled.

Topical note

Requirements for driving into the workshop

AH00.00-P-0021-01RFW

2

Print out "tank system, fuel cell, form event log," fill out, and attach to the vehicle somewhere clearly visible.



OF00.00-P-3000-21RFW

3

Shift axle drive module (50) to position N or neutral.

4

Release parking brake.

5

Secure vehicle on vehicle lift.

AR00.60-P-0100CW

6

Detach collar nut of rear axle drive shaft (37).

 Installation: Replace collar nut and secure after tightening.

 Nut, rear axle shaft to wheel bearing

*BA35.30-P-1001-01N

7

Remove plastic cover from spring link.

8

Lift steering knuckle (7) using major assembly mount until rear axle drive shaft (37) is approximately horizontal.



000 588 11 62 00 Major assembly mount

WS01.00-P-0092B

 Installation: Tighten the threaded connection of the strut rod (5), camber strut (2), thrust arm (3) and tie rod (4).

 Self-locking nut, tie rod to rear axle carrier

*BA35.20-P-1002-04M

 Bolt, thrust arm to wheel carrier

*BA35.20-P-1002-05J

 Bolt, camber strut to wheel carrier

*BA35.20-P-1002-02L

 Bolt, strut rod to wheel carrier

*BA35.20-P-1002-03L

9

Detach camber strut (2) from steering knuckle (7).

 Installation: Replace screw and corresponding nut.
Screw on bolted connection loosely.

10

Detach thrust arm (3) from steering knuckle (7).

 Installation: Replace screw and corresponding nut.
Screw on bolted connection loosely.

11

Detach tie rod (4) from steering knuckle (7).

 Installation: Replace screw and corresponding nut.
Screw on bolted connection loosely.

12

Detach strut rod (5) from steering knuckle (7).

 Installation: Replace screw and corresponding nut.
Screw on bolted connection loosely.

13

Unclip electrical line of rpm sensor from bracket on steering knuckle (7) and from bracket on wheel arch.

14

Release and disconnect electrical connector from actuator motor of electric parking brake and create access to electrical line.

AR42.20-P-0600LW

15

Lower steering knuckle (7).

 Installation: Lift steering knuckle (7) until rear axle drive shaft (37) is approximately horizontal.

16

Fold down steering knuckle (7) and pull rear axle drive shaft (37) out of rear axle shaft flange.

If the rear axle drive shaft (37) is stuck,



Press rear axle drive shaft (37) out of rear axle shaft flange.

AR35.30-P-0115-03LF

 Extraction and insertion tool

*210589034300

 Bracket

*210589014000

17

Pry rear axle drive shaft (37) out of axle drive module (50).

 Rest the lever, e.g. using a socket wrench, on the axle drive module (50).

18

Remove rear axle drive shaft (37).

 Installation: Replace locking ring (37o) on inner spline profile.



Check

19

Check constant velocity joints.

If axial or radial play is present:



Replace rear axle drive shaft (37).

20

Check boots(37m).

If the boots (37m) are damaged or leaking,



Replace the boot (37m) concerned.

AR35.30-P-0662-01LW

 Filling capacity for joint housing

*BF35.30-P-1001-01G

21

Install in the reverse order.

22

Perform chassis alignment.

AR40.20-P-0200LW

 Camber strut

Number

Designation

Model 253

BA35.20-P-1002-02L

Bolt, camber strut to wheel carrier

Stage 1

Nm

50

Stage 2

°

90

 Strut rod

Number

Designation

Model 253

BA35.20-P-1002-03L

Bolt, strut rod to wheel carrier

M12

Stage 1

Nm

50

Stage 2

°

90

 Tie rod

Number

Designation

Model 253

BA35.20-P-1002-04M

Self-locking nut, tie rod to rear axle carrier

When removing the tie rod

Stage 1

Nm

50

Stage 2

°

90

When adjusting the toe

Nm

110

 Thrust arm

Number

Designation

Model 253

BA35.20-P-1002-05J

Bolt, thrust arm to wheel carrier

Stage 1

Nm

50

Stage 2

°

90

 Rear axle shaft

Number

Designation

Model 253

BA35.30-P-1001-01N

Nut, rear axle shaft to wheel bearing

Nm

350

 Rear axle shaft, plugged in shafts

Number

Designation

Model 253
Plugged in shafts

BF35.30-P-1001-01G

Filling capacity for joint housing

Ø82

g

80

Ø95

g

100

Ø102

g

120

Ø106

g

130

Ø112

g

140

Ø116

g

150