Remove/install complete rear axle

AR35.10-B-0010D

Remove/install complete rear axle

11.05.2020

Rear axle

743 in model 688.101/102/103/111/118/121/123/133/143/156/157/158/159

Rear axle

743 in model 688.156/174/176/177/187

1

Vent hose

10

Torsion bar clamp

2

Parking brake cable

11

Rubber pad

3

Upper guide plate

12

Nut

4

Spring U-bolt

13

Shock absorber

5

Nut

14

Wear indicator

6

Screw

15

Electrical wiring

7

Clamp

16

Hydraulic pipe

8

Propeller shaft

17

Clamp

9

Screw

18

Connection

 

Remove/install

1

Remove the rear wheels

.

AR40.10-B-1100F

2

Drain the oil from the rear axle housing



.

AP35.00-B-3501C

3

Release the clamp and remove the vent hose (1) on the axle side

4

Disconnect the sensor and remove the screw from the brake linings wear indicator cable plug (14)

 Installation: Install the new screw.

5

Cut the clamps (17) that secure the electrical wiring (15) of the brake linings wear indicator and move the wiring away from the axle

6

Loosen the parking brake cable (2) on each side of the axle.

 Installation: Adjust the parking brake.

7

Release the lower eyes of the shock absorbers (13), the torsion bar clamp (10) and the rubber pad (11) from the supports

 Check rubber bushing conditions of the shock absorbers and torsion bar.

 Installation: Install new self-locking nuts.

 Rear shock absorbers' nuts

*BA32.25-B-1001-03A

 Caution

Risk of poisoning from swallowing brake fluid. Risk of injury from skin and eye contact with brake fluid

Only pour brake fluid into suitable and appropriately marked containers. Wear protective clothing and eye protection when handling brake fluid.

AS42.50-Z-0001-01A

8

Unscrew the hydraulic pipe (16) from the connection (18)


Cover the hydraulic pipe outlet.
To avoid clogging.

 Installation: Remove air from the brake system.

9

Loosen the coupling flange or yoke on the rear axle side and secure the propeller shaft (8) to the chassis

 Pre-mark the original position between the flanges or coupling forks of the propeller shaft and the axle to maintain balance.

10

Insert an appropriate lifting device under the rear axle and lift it slightly

 Do not lift the vehicle from the differential housing.

11

Loosen the nuts (5) and remove the spring U-bolts (4) and the upper guide plates (3) from the spring U-bolts (4)

 Installation: Clean the spring U-bolts threads and lubricate.

 Spring "U" bolt

*BA32.20-B-1001-03A

12

Lower the axle and remove it

13

Install in reverse order

 Rear axle metallic suspension

Number

Designation

Model 688

BA32.20-B-1001-03A

Spring "U" bolt

M12

Nm

101

M14

Nm

140

M16

Nm

205

New clips

M18

Nm

-

Maintenance - retightening

Nm

-

M20

Nm

-

M24

Nm

-

 Rear axle shock absorbers

Number

Designation

Model 688

BA32.25-B-1001-03A

Rear shock absorbers' nuts

M12x1.5

Nm

-

M14x15- steel 8

Nm

108

M14x1,5 (ISO)

Nm

-

M16x1,5 - steel 8

Nm

-

M16x1,5 - with flange

Nm

-

M16x1.5

Nm

-

M16x2 (ISO)

Nm

-

M20x1,5 - steel 8

Nm

-

M20x1,5 - steel 10

Nm

-

M24x2- steel 10.9

Nm

-