ar3225p0110rt

Remove/install rear shock absorber

Type ar · topic 32.25 · version 0203 · 2011-11-08

Applies to: MODEL 251

Where it sits

Function group 2 Chassis › 32 Suspension › 32.25 Shock absorbers, damper struts, spring struts — Series 251

EinPAS 20 Chassis › 20.16 Suspension › 20.16.30 Spring/air suspension bellows/shock absorber/suspension strut — Series 251

AR32.25-P-0110RT

Remove/install rear shock absorber

2.11.11

MODEL 251

Remove/install rear shock absorber

P32.25-2157-08

1 Rear shock absorber

Remove/install rear shock absorber

P32.25-2158-08

2 Nuts

Remove/install rear shock absorber

P32.25-2159-07

3 Electrical connector

4 Connector

5 Nut

6 Telescopic transmission jack

7 Screw

Remove/install rear shock absorber

P32.25-2160-11

1 Rear shock absorber

8 Upper rubber mount

9 Cover plate

10 Sealing rings

Modification notes

21.5.08

Value changed: Self-locking nut for shock absorber to frame floor assembly

*BA32.25-P-1002-03L

Removing

Danger!

Risk of injury caused by moving parts that can pinch, crush or, in extreme cases, even sever extremities

No parts of the body or limbs should be within the operating range of the mechanism when moving components.

AS00.00-Z-0009-01A

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

All models

AH00.00-N-0001-01A

1

Remove side paneling in trunk

Left or right

AR68.30-P-4800RT

2

Raise vehicle using two-post lift

Raise to half height.

AR00.60-P-1000RT

Two-post lifting platform 3.0-3.5 t, electromechanical
gotis://H_00.1_01.0

3

Fasten vehicle securely on two-post lift

Lifting platform retainer

*169589023100

4

Remove wheels

Remove/install wheels, rotate if necessary

AP40.10-P-4050RT

5.1

Disconnect electrical connector (3)

Only on vehicles with AIRmatic (air suspension with level adjustment and Adaptive Damping System ADS), code 489.

6.1

Unclip connector (4)

Only on vehicles with AIRmatic (air suspension with level adjustment and Adaptive Damping System ADS), code 489.

7

Using the telescoping/transmission jack (6) under the supporting joint until the wheel suspension is slightly deflected

This prevents the wheel suspension from sinking and the air spring being damaged due to elongation when the rear shock absorber (1) is removed.

Telescopic transmission jack

Transmission jack 2.0-7.0 t
gotis://H_00.10_01.0

8

Unscrew nuts (2)

9

Unscrew nut (5)

10

Pull out bolt (7)

11

Slide rear shock absorber (1) carefully together and remove

Ensure that the cover plate (9) and the two sealing rings (10) are removed together with the rear shock absorber (1).

Do not damage any components in the installation area of the rear shock absorber (1).

Checking

12

Remove sealing rings (10) and cover plate (9) of the rear shock absorber (1) and check upper rubber mount (8) of rear shock absorber (1)

Replace if necessary.

13

Check rear shock absorber (1) for damage

Replace if necessary.

Install

14

Position cover plate (9) on rear shock absorber (1) and fit sealing rings (10)

Use new sealing rings (10).

15

Insert rear shock absorber (1)

Insert rear shock absorber (1) first at the top then at the bottom.

16

Screw on nuts (2)

Do not tighten nuts yet (2)

17

Insert bolt (7) and screw on nut (5)

Do not tighten nut (5) yet.

18

Using the telescoping/transmission jack (6) lift the wheel suspension under the supporting joint until the wheel suspension is deflected to the driving level

The rubber mounts of the suspension are hereby set to the neutral position.

Telescopic transmission jack

Transmission jack 2.0-7.0 t
gotis://H_00.10_01.0

19

Tighten nuts (2)

*BA32.25-P-1002-03L

20

Tighten nut (5)

*BA32.25-P-1001-03L

21

Lower the wheel suspension with the telescoping/transmission jack (6) and remove the telescoping/transmission jack (6)

Lower suspension slowly!

Telescopic transmission jack

Transmission jack 2.0-7.0 t
gotis://H_00.10_01.0

22.1

Connect electrical connector (3)

Only on vehicles with AIRmatic (air suspension with level adjustment and Adaptive Damping System ADS), code 489.

23.1

Clip on connector (4)

Only on vehicles with AIRmatic (air suspension with level adjustment and Adaptive Damping System ADS), code 489.

24

Attach rear wheel

Remove/install wheels, rotate if necessary

AP40.10-P-4050RT

25

Remove the lifting platform safety device and lower the vehicle using the two-post lift

Lifting platform retainer

*169589023100

Two-post lifting platform 3.0-3.5 t, electromechanical
gotis://H_00.1_01.0

26

Install paneling on side in trunk

AR68.30-P-4800RT

Rear axle shock absorber

Number

Designation

Model 251

BA32.25-P-1001-03L

Self-locking nut, shock absorber to spring control arm

Stage 1

Nm

100

Stage 2

°

120

BA32.25-P-1002-03L

Self-locking nut, shock absorber to frame floor

Nm

35

Remove/install rear shock absorber

Vehicle lift safety device

169 589 02 31 00

Referenced documents