Remove/install spring control arm, replace rubber bushing

AR35.20-P-0114TX

Remove/install spring control arm, replace rubber bushing

12.3.10

 

Remove/install

Danger!

Risk of death caused by vehicle slipping or toppling off of the lifting platform.

Align vehicle between columns of vehicle lift and position four support plates at vehicle lift support points specified by vehicle manufacturer.

AS00.00-Z-0010-01A



Notes on self-locking nuts and bolts

AH00.00-N-0001-01A

 While working on the rear axle care must be taken to ensure that the surfaces of aluminum components do not get any scratches, cracks and notches. Otherwise the service life of the parts will be affected

 Installation: Only tighten bolts and nuts of the chassis components when in ready-to-drive condition.

1

Completely discharge all air from air spring with STAR DIAGNOSIS

Vehicles with AIRmatic (semi-active air suspension), code 489

AR32.22-P-1500-04TX



Notes on AIRmatic

AH32.22-P-1000-02T

 Installation: The filling procedure for the air springs must be observed, otherwise the air springs will be irreparably damaged.

AR32.22-P-1500-03TX



*BA32.25-P-1006-04K



*BA32.25-P-1007-04K



*211589000900

Electronic inclinometer
gotis://F_40.2_02.0

2

Remove rear wheel



Remove/install wheels, rotate if necessary

AP40.10-P-4050TX

3

Remove cover (6f)

4.1

Remove rear spring (6i).

Vehicles without AIRmatic

AR32.20-P-0230TX

4.2

Detach air spring from spring control arm (6)

Vehicles with AIRmatic (semi-active air suspension), code 489

 Do not twist the air spring nor move it into the stretched position as this leads to creases forming in the air spring bellows and consequently to irreparable damage to the air spring. Secure the air spring to prevent it from falling down.

 Installation: Tighten all of the bolted connections which are loosely mounted

5

Detach shock absorber (6j) from spring control arm (6)

Vehicles with AIRmatic (semi-active air suspension), code 489



*BA32.25-P-1002-03I

6

Remove shock absorber (6j) from spring control arm (6)

Vehicles with AIRmatic (semi-active air suspension), code 489

 Slide damper (6j) together and position to the side of the spring control arm (6).

7

Raise wheel carrier (7) using transmission jack and transmission platform until rear axle shaft (37) is roughly horizontal

 Installation: Tighten all bolted connections which are screwed together loosely



*BA35.20-P-1001-04E



*BA35.20-P-1001-01E

8

Detach tie rod (4) from wheel carrier (7) and swing upwards

 Installation: Mount bolted connection loosely.

9

Detach brake caliper from wheel carrier

AR42.10-P-0080TX

10

Detach spring control arm (6) from rear axle carrier (1)

 Installation: Mount bolted connection loosely.

11

Detach spring control arm (6) from wheel carrier (7) and lever out spring control arm (6)

 Installation: Drive fitted bush (7b) flush into wheel carrier (7) using a suitable tool.



*BA35.20-P-1002-01E



Checking

12

Check spring control arms (6) for signs of damage

Vehicles without AIRmatic

 On vehicles with steel suspension bars are located on the spring control arm (arrow), which shear off at side impacts and thus protect the rear axle carrier (1). If the webs are sheared off, the spring control arm (6) must be replaced.

13

Check supporting joint (6a) in spring control arm (6) for signs of damage

Vehicles without AIRmatic: Replace supporting ball joint (6a) if necessary: 

Remove/install supporting joint on spring control arm

AR35.20-P-0118R

Vehicles with AIRmatic: Replace spring control arm (6) if necessary.

 In the case of aluminum spring control arm for air suspension the supporting ball joint must not be replaced. The spring control arm is damaged by the supporting ball joint being pulled out and in. An exact alignment of the spring link halves is not subsequently possible.

14

Check rubber mount (6b) for spring control arm (6) in rear axle carrier (1) for signs of damage

Replace rubber mount (6b) if necessary.

Replacing rubber mount:

15

Detach tie rod (4) from rear axle carrier (1)

AR35.20-P-0109TX

16.1

Remove exhaust system from flange connection back

Model 219.354 /356 /357 /372

AR49.10-P-7280TX

Model 219.375 /376/ 377

AR49.10-P-7280TY

16.2

Remove rear muffler

Model 219.322

AR49.10-P-4951TQ

17

Remove rubber mount (6b)

AR35.20-P-0114-01TX



*220589014300



*202589044300

18

Install in the reverse order

19

Perform wheel alignment check

AR40.20-P-0200TX

Number

Designation

Model
219 AIRmatic

BA32.25-P-1002-03I

Self-locking nut for attaching shock absorber to spring control arm

M10

Nm

55

Number

Designation

Model
219

BA35.20-P-1001-04E

Self-locking nut, tie rod at wheel carrier

Stage 1

Nm

40

Stage 2

°

90

Number

Designation

Model
219

BA35.20-P-1001-01E

Self-locking nut, spring control arm to rear axle carrier

Aluminum

M12

Stage 1

Nm

50

Stage 2

°

90

Steel

M12

Stage 1

Nm

50

Stage 2

°

90

BA35.20-P-1002-01E

Self-locking nut, spring control arm to wheel carrier.

Aluminum

M14

Stage 1

Nm

150

Steel

M14

Stage 1

Nm

80

Stage 2

°

90

Number

Designation

Model
219 with
AIRMATIC

BA32.25-P-1006-04K

Nut, rear air spring at spring control arm

Nm

150

BA32.25-P-1007-04K

Air suspension pressure line at rear axle distributor

Nm

5