Remove/install rear spring

AR32.20-D-0230H

Remove/install rear spring

17.08.2018

Model

900.6

Model

906

except code C83 (Rear axle springs for increased payload)

except code PL9 (Air suspension, company VB-Airsuspension)

Modification notes

16.08.2018

Bolt, rear axle spring to spring shackle at rear

Bolt 900

BA32.20-N-1003-03A

16.08.2018

Bolt, rear axle spring to spring shackle at rear

Model 906.1/2

BA32.20-N-1003-03A

16.08.2018

Bolt, rear axle spring to spring shackle at rear

Model 906.6/7

BA32.20-N-1003-03A

Shown: left rear axle spring (3)

1

Spring U-bolt

2

Plate

3

Rear axle spring

4

Spring shackle

5

Nut

Pfeil

Larger bearing eye

9

Articulated rod

 Warning

Risk of injury caused by pinching or crushing when working on springs or spring bodies that are under tension

Use only approved tensioning devices; additionally screen off hazardous area if necessary. Check special tools for damage and proper operation (visual inspection). Wear protective gloves.

AS00.00-Z-0001-01A

Topical note

Notes on self-locking nuts and bolts

AH00.00-N-0001-01A

Notes on repair work on suspension components

AH00.00-P-0100-01A



Remove

1

Secure vehicle on vehicle lift

AR00.60-D-0100H

2

Support rear axle using an assembly unit mount and mounting plate



000 588 10 62 00 Support plate

WS26.00-P-3309B



000 588 11 62 00 Major assembly mount

WS01.00-P-0092B

3

Unclip ball head of articulated rod (9) from relay lever of headlamp range adjustment level sensor

Model 906
with code LG0 (Bi-xenon headlamps)
except code C83 (Rear axle springs for increased payload)
except code PL9 (Air suspension, company VB-Airsuspension)
Model 906
with code LG1 (Bi-xenon headlamps with cornering function)
except code C83 (Rear axle springs for increased payload)
except code PL9 (Air suspension, company VB-Airsuspension)

4

Detach spring U-bolts (1)

5

Remove plate (2)

6

Detach rear axle spring (3) from front spring bracket

7

Remove rear axle spring (3) with spring shackle (4) from rear spring bracket

8

Lower rear axle and remove rear axle spring (3)



000 588 11 62 00 Major assembly mount

WS01.00-P-0092B



000 588 10 62 00 Support plate

WS26.00-P-3309B


Lower the rear axle carefully and do not pull or kink the brake hoses.
Otherwise the brake hoses will be damaged.

 Helper required.

9

Detach spring shackle (4) from rear axle spring (3)



Check

10

Check elastomer bearings in rear axle spring (3) and spring shackle (4) for wear and damage

In event of wear or damage



Replace the elastomer bearings of the rear axle spring (3).

AR32.20-D-0240H



Install

11

Attach spring shackle (4) to rear bearing eye of rear axle spring (3) and adjust installed dimension of rear axle spring (3)

AR32.20-D-0230-01H

Installed dimension

*BE32.20-N-1001-02A

 Bolt, rear axle spring to spring shackle at rear

*BA32.20-N-1003-03A

12

Attach rear axle spring (3) to front spring bracket


Tighten the threaded connection finger-tight only.
Otherwise the elastomer bearings will be placed under stress.

 Make sure that the installation position of the rear axle spring (3) is correct. The large bearing eye (arrow) must point forward.

13

Attach rear axle spring (3) to rear spring bracket using spring shackle (4)


Tighten the threaded connection finger-tight only.
Otherwise the elastomer bearings will be placed under stress and will wear prematurely.

14

Raise rear axle carefully and insert center bolt of rear axle spring (3) into mounting hole of rear axle



000 588 10 62 00 Support plate

WS26.00-P-3309B



000 588 11 62 00 Major assembly mount

WS01.00-P-0092B

15

Place plate (2)

16

Attach spring U-bolts (1)

 Nut, spring U-bolt for rear axle spring to rear axle

*BA32.20-N-1005-03A

17

Clip in ball head of articulated rod (9) at relay lever of headlamp range adjustment level sensor

Model 906
with code LG0 (Bi-xenon headlamps)
except code C83 (Rear axle springs for increased payload)
except code PL9 (Air suspension, company VB-Airsuspension)
Model 906
with code LG1 (Bi-xenon headlamps with cornering function)
except code C83 (Rear axle springs for increased payload)
except code PL9 (Air suspension, company VB-Airsuspension)

18

Lower vehicle, remove tensioning straps and lower vehicle lift fully

AR00.60-D-0100H

19

Tighten nuts (5)


The nuts (5) should only be tightened when the rear axle spring (3) is in its compressed state.
Otherwise the elastomer bearings will be placed under stress and will wear prematurely.

 Bolt, rear axle spring to spring bracket at front

*BA32.20-N-1002-03A

 Bolt, spring shackle to spring bracket at rear

*BA32.20-N-1004-03A

20

Retighten spring U-bolts (1)

After a driving distance of 20,000 to 40,000 km.



AP32.20-D-3271H

Test and adjustment values for rear axle steel suspension

Number

Designation

Model 900.63

Model 900.65

BE32.20-N-1001-02A

Installed dimension

Rear axle spring

with spring shackle

mm

1469

1467,5

Picture

AR32.20-D-0230-01H

AR32.20-D-0230-01H

Test and adjustment values for rear axle steel suspension

Number

Designation

Model 906.11/13/21/23/61/63/71/73
except code C83 (Rear axle springs for increased payload)
except code PL9 (Air suspension, company VB-Airsuspension)

Model 906.15/25/65
except code C83 (Rear axle springs for increased payload)
except code PL9 (Air suspension, company VB-Airsuspension)

BE32.20-N-1001-02A

Installed dimension

Rear axle spring

with spring shackle

mm

1469

1467,5

Picture

AR32.20-D-0230-01H

AR32.20-D-0230-01H

 Rear-axle steel suspension

Number

Designation

Bolt 900

Model 906.1/2

BA32.20-N-1002-03A

Bolt, rear axle spring to spring bracket at front

M12x1.5

Stage 1

Nm

70

60

Stage 2

°

180

180

M14x1.5

Nm

-

-

M16x1.5

Nm

240

240

M18x1.5

Nm

-

-

 Rear-axle steel suspension

Number

Designation

Model 906.6/7

BA32.20-N-1002-03A

Bolt, rear axle spring to spring bracket at front

M12x1.5

Stage 1

Nm

70

Stage 2

°

180

M14x1.5

Nm

-

M16x1.5

Nm

240

M18x1.5

Nm

-

 Rear-axle steel suspension

Number

Designation

Bolt 900

Model 906.1/2

BA32.20-N-1003-03A

Bolt, rear axle spring to spring shackle at rear

M12x1.5

Stage 1

Nm

85

85

Stage 2

°

-

-

M16x1.5

Nm

240

240

 Rear-axle steel suspension

Number

Designation

Model 906.6/7

BA32.20-N-1003-03A

Bolt, rear axle spring to spring shackle at rear

M12x1.5

Stage 1

Nm

85

Stage 2

°

-

M16x1.5

Nm

240

 Rear-axle steel suspension

Number

Designation

Bolt 900

Model 906.1/2

BA32.20-N-1004-03A

Bolt, spring shackle to spring bracket at rear

M12x1.5

Stage 1

Nm

70

70

Stage 2

°

180

180

M16x1.5

Nm

240

240

 Rear-axle steel suspension

Number

Designation

Model 906.6/7

BA32.20-N-1004-03A

Bolt, spring shackle to spring bracket at rear

M12x1.5

Stage 1

Nm

70

Stage 2

°

180

M16x1.5

Nm

240

 Rear-axle steel suspension

Number

Designation

Bolt 900

Model 906.1/2

BA32.20-N-1005-03A

Nut, spring U-bolt for rear axle spring to rear axle

M14x1.5

Stage 1

Nm

160

160

Stage 2

°

-

-

Stage 3

°

-

-

 Rear-axle steel suspension

Number

Designation

Model 906.6/7

BA32.20-N-1005-03A

Nut, spring U-bolt for rear axle spring to rear axle

M14x1.5

Stage 1

Nm

160

Stage 2

°

-

Stage 3

°

-