Remove/install complete rear axle

AR35.10-W-0010PE

Remove/install complete rear axle

25.06.2020

Rear axle

748.281 in model 956

1

Wishbone control arm

6

Screw

11

Screw

2

Nut

7

Air suspension bellows carrier

12

Nut

3

Brake wear sensor

8

Stabilizer link

13

Bearing bracket

4

Screw

9

Nut

14

Interwheel differential lock shift cylinder

5

Shock absorber

10

Interaxle differential lock shift cylinder

Topical note

Notes on threaded connections fastened using a tightening angle-based tightening process

AH00.00-P-0020-01A

Notes on safety-relevant components

AH00.00-Z-0019-01A

 

Remove/install

1

Secure vehicle to prevent it moving away.

2

Empty compressed-air system completely.

3

Remove wheels from the rear axle.

AR40.10-W-1100H

 After jacking up, leave the lifting device positioned at the rear axle.

4

Remove left and right anti-lock braking system (ABS) rpm sensors.

AR42.30-W-0140H

5

Disconnect electrical connector from left and right brake pad wear sensor (3).


Detach and attach the connector in an axial direction only.
The electrical connectors can otherwise be damaged and the brake caliper must be replaced.

6

Remove compressed-air lines from combination brake cylinders.

7

Remove compressed-air lines from interaxle differential lock shift cylinder (10) and from interwheel differential lock shift cylinder (14).

8

Disconnect electrical connector from interaxle differential lock shift cylinder (10) and interwheel differential lock shift cylinder (14).

9

Detach bleed line from top of rear axle.

10

Detach compressed-air distributor and all line brackets attached to rear axle and tie up to one side.

11

Remove propeller shaft from drive and output flange on rear axle and fix in place using tensioning straps.

AR41.10-W-0050NE

12

Remove both shock absorbers (5) from air suspension support (7) on rear axle.

 Shock absorber to rear axle air suspension

*BA32.25-N-1003-03M

13

Remove both stabilizer links (8) from the bearing brackets (13) on the vehicle frame.

 Stabilizer link to vehicle frame bearing bracket

*BA32.35-N-1002-03L

14

Remove wishbone control arm (1) from bearing bracket on rear axle.

 Wishbone control arm to bearing bracket on rear axle

*BA35.15-N-1001-03G

15

Lower rear axle and pull out from under the vehicle.

16

Remove both air suspension supports (7) from rear axle.

Only when replacing rear axle.

 Air suspension bellows carrier on rear axle (cast axle housing)

*BA32.22-N-1015-03I

 Socket wrench bit

*963589000900

17

Install in the reverse order

 Air suspension

Number

Designation

Model 956

BA32.22-N-1015-03I

Air suspension bellows carrier on rear axle (cast axle housing)

M24x2

Stage 1

Nm

100

Stage 2

Nm

300

Stage 3

Nm

500

Stage 4

Nm

690

Stage 5

°

90

 Rear axle shock absorber

Number

Designation

Model 956

BA32.25-N-1003-03M

Shock absorber to rear axle air suspension

Nm

330

 Rear axle stabilizer bar

Number

Designation

Model 956

BA32.35-N-1002-03L

Stabilizer link to vehicle frame bearing bracket

Stage 1

Nm

225

Stage 2

°

90

 Control arm

Number

Designation

Rear axle 748.28 in model 956

BA35.15-N-1001-03G

Wishbone control arm to bearing bracket on rear axle

Stage 1

Nm

300

Stage 2

°

90