ar3510b0010e

Remove/install complete rear axle

Type ar · topic 35.10 · version 0402 · 2020-08-14

Applies to: Rear axle 740.636/645/647/654/655 in model 388.0

Where it sits

Function group 2 Chassis › 35 Rear axle › 35.10 Complete rear axle — Series 388 (models 0**)

EinPAS 17 Drivetrain/axle › 17.51 Rear axle › 17.51.30 Rear axle assembly — Series 388 (models 0**)

Also applies to engines/gearboxes: 740 636, 740 645, 740 647, 740 654, 740 655

AR35.10-B-0010E

Remove/install complete rear axle

04.08.2020

Rear axle

740.636/645/647/654/655 in model 388.0

Modification notes

03.06.2019

Center housing of the rear axle

BF35.10-B-1001-01B

03.06.2019

Planetary cases of wheel hubs - filling capacity for each side

BF35.10-B-1002-01B

21.06.2019

Center housing of the rear axle

BF35.10-B-1001-01B

21.06.2019

Planetary cases of wheel hubs - filling capacity for each side

BF35.10-B-1002-01B

27.11.2019

Center housing of the rear axle

BF35.10-B-1001-01B

27.11.2019

Planetary cases of wheel hubs - filling capacity for each side

BF35.10-B-1002-01B

Remove/install complete rear axle

B35.10-0015-08

1

Axle

10

Threaded connections on cylinders

2

Flange bolts and nuts

11

Pneumatic banjo connections

3

Shaft flange

12

Plate fastening bolts

4

Rear shock absorbers

13

Spring clamp nuts

5

Shock absorber mounting eye

14

Spring clamps

6

Propeller shaft

15

Lower brackets

7

Rod articulation pins

16

Brake adjusters (ratchets)

8

Combination cylinders

17

Spring supports on axle

9

ABS sensor

Remove/install

Warning

Risk of accident from vehicle starting off by itself when engine running. Risk of injury (bruises and burns) resulting from working on the engine while it is being started or when it is running.

Chock the vehicle against unintentional displacement. Utilize closed and close fitting work clothes. Do not touch heated-up or moving parts.

AS00.00-B-0005-01A

1

Remove the wheels


.

AR40.10-B-1101A

2

Support the vehicle on trestles securely placed under the chassis stringers. Keep the axle slightly supported on the appropriate lifting device, for removal

Excessive strokes may damage the dampers.

3

Unfasten shock absorbers (4) at lower mounting eyes (5)

When installing, check bushing conditions and fit new self-locking nuts to the fastening bolts.

.Rear shock absorbers' nuts

*BA32.25-B-1001-03A

4

Remove articulation pins (7) from combination cylinder rods (8) and withdraw them from the adjusters (16)

During this procedure, the compressed air system must be under pressure and the parking brake must be released.

Installation: Fit new counter-pins and lubricate the articulation pins.

Grease, DB supply specification 6804 - Class 267.0

*BR00.45-Z-1107-06A

5

Release pressure from compressed air system tanks

6

Remove sensors (9) from the ABS system

7

Disconnect all central lubrication system tubing

In vehicles equipped with a central lubrication system.

8

Wherever necessary, the plastic clamps fastening the tubing to the axle must be cut and the tubes should be withdrawn with care

Installation: Fasten the tubing with suitable new clamps.

9

Detach transmission shaft (6) at flange (3). Support the transmission shaft to prevent stress


.

AR41.10-B-0050A

All transmission shafts are balanced. Before removal, the original flange position and also the shaft position in relation to the notch should be marked. Install the shaft in its original position to preserve its balance.

10

Drain the oil from the differential and from the planetary reduction gearing

For vehicles sold out of Brazil, the recommended lubricants should be consulted on site http://bevo.mercedes-benz.com (Sheet 231.2).

Installation: Refill with new oil according to vehicle specifications.

Lubricating oil for hydraulic steering gear, DBL 6623.60 - Class 236.2

*BR00.45-Z-1119-06A

.Planetary cases of wheel hubs - filling capacity for each side

*BF35.10-B-1002-01B

.Center housing of the rear axle

*BF35.10-B-1001-01B

11

Detach pneumatic tubes from combination cylinders (8) at threaded connections (10) and at pneumatic connections (11).

Installation: Fit new sealing washers ant tighten the connections to the specified torque.

.Dryer and pressure regulator

*BA42.60-B-1001-04A

12

Remove the four bolts (12) and withdraw the plate together with the two combination cylinders (8)

Installation: Tighten the bolts to the specified torque.

.Combined cylinder support in the rear axle support

*BA42.10-B-1006-08A

13

Remove nuts (13) from spring clamps (14)

Installation: Tighten the nuts to the specified torque.

.Hex nut on the center support spring clamp

*BA32.20-B-1001-03E

14

Remove spring pack clamps (14), lower supports (15), and the clamp positioners

Installation: Check conditions of the threads of the clamps and nuts, lubricate lightly. Replace them, if necessary.

Lubricating oil for hydraulic steering gear, DBL 6623.60 - Class 236.2

*BR00.45-Z-1119-06A

15

Lower the axle and withdraw the supports and axle guides (17)

Installation: Check conditions of the spring shackle pin and of the support chock guide holes. When installing, take special care to ensure that the spring shackle pin fits correctly in the support chock.

16

Remove axle (1)

17

Install in reverse order

Metallic suspension in the rear axle

Number

Designation

Type 386.3, 388.0/364, 682.3, 693.1 (except 693.193/194 ), 693.3, 695.0/3, 696.3

BA32.20-B-1001-03E

Hex nut on the center support spring clamp

Third axle

M18

Nm

350

M20

Nm

500

M24

Nm

750

Rear axle shock absorbers

Number

Designation

Model 388, 696

BA32.25-B-1001-03A

Rear shock absorbers' nuts

M12x1.5

Nm

-

M14x15- steel 8

Nm

-

M14x1,5 (ISO)

Nm

-

M16x1,5 - steel 8

Nm

225

M16x1,5 - with flange

Nm

177

M16x1.5

Nm

-

M16x2 (ISO)

Nm

-

M20x1,5 - steel 8

Nm

-

M20x1,5 - steel 10

Nm

-

M24x2- steel 10.9

Nm

-

Brake cylinder

Number

Designation

Type 388.0/3, 660.0, 693.3

BA42.10-B-1006-08A

Combined cylinder support in the rear axle support

M14x1.5

Nm

170...190

Pneumatic brake system

Number

Designation

Model 368, 382, 384.2/3, 386.0, 388.0, 660, 682, 688, 693, 694, 695, 696

BA42.60-B-1001-04A

Dryer and pressure regulator

Feeding hollow bolt - Wabco/Knorr

Nm

50

Protection valve fastening bolts - Wabco/Knorr

Nm

20...24

Bolt that fastens the air dryer to the support - Wabco/Knorr

Nm

25...30

Air pressure regulator cover bolt - Wabco

Nm

5

Adjustment bolt nut - Wabco

Nm

5

Diaphragm fastening nut - Wabco

Nm

20...25

tires filling valve body - Wabco

Nm

35...43

Nuts that fasten the housing to the supporting nuts - Wabco

Nm

25

Rear axle

Number

Designation

Rear axle 740.6/7

BF35.10-B-1001-01B

Center housing of the rear axle

Filling volume

Litros

12

Oil class

MB 235.20

Rear axle

Number

Designation

Rear axle 740.6/7

BF35.10-B-1002-01B

Planetary cases of wheel hubs - filling capacity for each side

Litros

3,25

Repair materials

Number

Designation

Order number

BR00.45-Z-1107-06A

Grease, DB supply specification 6804 - Class 267.0

Use corresponding commercially available repair materials.

BR00.45-Z-1119-06A

Lubricating oil for hydraulic steering gear, DBL 6623.60 - Class 236.2

Use corresponding commercially available repair materials.

Referenced documents