Remove/install complete rear axle

AR35.10-P-0010AK

Remove/install complete rear axle

1.12.10

9.12.09

Value modified: Bolt, shock absorber to rear axle carrier

*BA32.25-P-1001-03J



Removing



Notes on self-locking nuts and bolts

AH00.00-N-0001-01A

 Installation

Replace self-locking nuts and bolts.

1

Raise vehicle

AR00.60-P-1000AK

2

Remove rear wheels



Remove/install wheels, rotate if necessary

AP40.10-P-4050AK

3

Disconnect electrical connectors (1, 2) of left rear rpm sensor (L6/3) and right rear rpm sensor (L6/4) in wheel well and detach from body

4

Remove rear springs

AR32.20-P-0230AK

5

Reset front brake cable (3) of parking brake

AR42.20-P-0540-04AK

6

Unhook left rear brake cable (4) and right rear brake cable (5) at brake adjuster (6)

7

Detach floating brake calipers (7) from brake caliper supports (8) and fasten in wheel well with brake hose connected

 See:

Remove/install rear axle brake caliper

AR42.10-P-0080AK

8

Detach link rod (9) from rear axle (10)

9

Unclip clips and fold covers (11) to one side

10

Unlock latching hook of cover (12) and remove cover (12) from coupled-link bearing (13)

11

Position support fixture (14) on rear axle (10) and move into design reference position

 The design reference position is reached when all the jacking points of the support fixture (14) abut the rear axle (10).



*169589026200

 Removal fixture for rear axle

Blitz M. Schneider

D-78195 Bräunlingen, Germany

Order no.: 3741550

12

Unscrew bolts (15) from coupler bearing (13)

13

Detach damper (16) from the rear axle (10)

14.1

Unscrew center bolt (17) of rear axle (10) from body floor and remove with plate (18)

Bolt insertion direction from the bottom upwards.

 The center bolt (17) must not be removed with an impact wrench, otherwise the thread can be damaged.

14.2

Unscrew nut of central threaded connection of rear axle (10) and remove with washer and plate (18)

Insertion direction of the fitted bolt from the top downwards.

The fitted bolt must be counterheld.

AR64.20-P-1330AK

 The nut of the fitted bolt must not be unscrewed with an impact wrench/driver otherwise the thread of the fitted bolt may be damaged.

15

Lower rear axle (10) with support fixture (14) carefully



*169589026200

 Removal fixture for rear axle



Checking

16

Check tapered surface on the mounting console for the center bearing (19) of the rear axle (10)

Only in the event of damage caused by accidents.

AR64.20-P-1340AK

17

Check bolting on variant of center bearing (19)

 Different bolting on variants are possible depending on the model year or repairs carried out previously.

AR35.10-P-0010-14AK

 It is not necessary to check the bolting on variant when a fitted bolt is used. Insertion direction of the fitted bolt from the top downwards. Tightening with nut.

18

Check length of center bolt (17)

Only with bolt insertion direction from the bottom upwards.

 Original threaded connection with bolt M16 X 1.5 X 180.

Repair threaded connection with bolt M16 X 1.5 X 225 and captive nut.

19

Screw M161.5 tap into thread in body floor

Only with original threaded connection with bolt M16 X 1.5 X 180.

 Do not exceed a torque of approx. 5 Nm.

If the torque is exceeded or chip formation, use fitted bolt: 

Fitted bolt for center bearing mounting console on rear axle

AR64.20-P-1330AK

20

Replace captive nut

Only for repair threaded connection with bolt M16 X 1.5 X 225 and captive nut.

The captive nut must not be reused and must be replaced by a fitted bolt: 

Fitted bolt for center bearing mounting console on rear axle

AR64.20-P-1330AK

21

Check center bearing (19) of rear axle (10)

 Replace center bearing (19) if damaged.

Refer to: 

Remove/install center bearing on rear axle

AR35.10-P-0200AK



Install

22

Move rear axle (10) into design reference position with support fixture (14)

 Position support fixture (14) on rear axle (10) and move into design reference position. The design reference position is reached when all the jacking points of the support fixture (14) abut the rear axle (10).



*169589026200

 Removal fixture for rear axle

23

Fix rear axle (10) to body floor with center bolt (17) and plate (18)

 Use new self-locking center bolt (17), new washer and new nut (with fitted bolt). Counterhold fitted bolt.
The center bolt (17) or nut must not be screwed in with an impact wrench/driver otherwise the thread may be damaged.

 Only attach the center bolt (17) or nut 2 to 3 threads by hand and then tighten.



*BA35.10-P-1001-01I



*BA35.10-P-1006-01I

24

Mount shock absorber (16) onto rear axle (10)



*BA32.25-P-1001-03J

25

Tighten bolts (15) on coupled-link bearing (13)



*BA35.10-P-1005-01I

26

Lower and remove support fixture (14)



*169589026200

 Removal fixture for rear axle

27

Clip cover (12) on to coupled-link bearing (13)

 Check latching hook of cover (12), replace cover (12) if necessary.

28

Attach covers (11)

29

Attach link rod (9) to rear axle (10)



*BA32.20-P-1003-04K

30

Mount floating brake calipers (7) on brake caliper support (8)

 See:

Remove/install rear axle brake caliper

AR42.10-P-0080AK

31

Hook left rear brake cable (4) and right rear brake cable (5) on brake adjuster (6)

32

Install rear springs

AR32.20-P-0230AK

33

Connect electrical connectors (1, 2) of left rear rpm sensor (L6/3) and right rear rpm sensor (L6/4) in wheel well

34

Adjust parking brake

AR42.20-P-0540AK

35

Fit rear wheels



Remove/install wheels, rotate if necessary

AP40.10-P-4050AK

36

Lower vehicle

AR00.60-P-1000AK

Number

Designation

Model
169

Model
245

BA32.20-P-1003-04K

Bolt, torsion bar link rod to rear axle

Nm

40

40

Number

Designation

Model
169

Model
245

BA32.25-P-1001-03J

Bolt, shock absorber to rear axle carrier

Nm

70

70

Number

Designation

Model
169

Model
245

BA35.10-P-1001-01I

Bolt, center bearing to body

M161.5180

Stage 1

Nm

200

200

Stage 2

Nm

Releasing

Releasing

Stage 3

Nm

220

220

Stage 4

°

90

90

Checking torque

Nm

230

230

BA35.10-P-1005-01I

Bolt, coupler bearing to body

Stage 1

Nm

60

60

Stage 2

Nm

Releasing

Releasing

Stage 3

Nm

80

80

BA35.10-P-1006-01I

Fitted bolt, center bearing to body

M161.5225

Stage 1

Nm

200

200

Stage 2

Nm

Releasing

Releasing

Stage 3

Nm

150

150

Stage 4

°

180

180

Checking torque

Nm

250

250