Remove/install wheel hub on trailing axle

AR35.50-B-0003G

Remove/install wheel hub on trailing axle

12.05.2020

Rear axle

749.117 in model 979.0

Modification notes

02.03.2018

Special tool 055 589 17 07 00 added.

Work step 4, 15

1

Race ring

2

Radial seal

3

Wheel hub

4

Wheel screw

5

Inner race of the outer bearing (outer)

6

Stop washer

7

Inner grooved nut

8

Lock plate

9

Outer grooved nut

10

Brake drum

11

Gasket

12

Cover

13

Bolt

14

Extractor

15

Claw wrench



Remove

1

Remove the wheels

.

AR40.10-B-1100E

2

Remove the brake drum (10)

.

AR42.10-B-1010G

3

Remove the screw (13) and remove the cap (12)

4

Unlock the locking plate (8) and remove the grooved nuts (9, 7)

 Claw wrench

*055589170700

5

Remove the thrust washer (6)

6

Remove the wheel hub (3)

 The wheel hub (3) can also be removed together with the brake drum.

 Puller

*035589013300

 Thrust piece

*360589026300

7

Remove the inner race of the bearing (outer) (5) from the wheel hub (3)

8

Remove the wheel bolts (4) from the wheel hub (3)

Only if replacing the screws (4) securing the wheels is necessary.


Use an appropriate mandrel:
to not damage the parts.



Check

9

Check the conditions of the friction surface of the race ring (1)

If there are damages or furrows on the friction surface of the track ring (1):



Replace the track ring.



Install

10

Install the wheel fastening bolts (4) in the wheel hub

Only if the screws (4) have been removed.

 Utilize an appropriate mandrel.

11

Install a new seal ring (2) in the wheel hub (3)

 Install a new radial seal ring (2), and apply grease on the sealing lip.

 Utilize an appropriate mandrel.

12

Install the wheel hub (3)

 Lubricate the friction surfaces of the race ring (1).

13

Install the inner race of the tapered roller bearing (5)

14

Install the thrust washer (6)

15

Install the inner grooved nut (7), the locking plate (8), and the outer grooved nut (9)

16

Adjust the axial play of the wheel hub

Rear axle 749.117

AR35.20-B-0301-01G

.Axial clearance of wheel hub bearings

*BE35.20-B-1001-02H

 Rear axle 749.117Internal and external grooved nut in the wheel hub

*BA35.20-B-1001-06P

 Claw wrench

*055589170700

 Dial gage

*001589532100

 Dial indicator holder

*363589022100

17

Install the gasket (11), the cap (12), and tighten the screws (13)

 Installation: Replace the gasket (11).

 .Internal and external grooved nut in the wheel hub

*BA35.20-B-1001-06P

18

Install the brake drum (10)

.

AR42.10-B-1010G

19

Install the wheels

.

AR40.10-B-1100E

Wheel hub

Number

Designation

Rear axle 749.117 in the Type 979

BE35.20-B-1001-02H

Axial clearance of wheel hub bearings

mm

0,02...0,04

 Hub

Number

Designation

Rear axle 749.117

BA35.20-B-1001-06P

Internal and external grooved nut in the wheel hub

First step

Nm

250

Second stage

°angular

-180