Remove/install drive pinion

AR35.30-W-0468DA

Remove/install drive pinion

07.04.2014

Rear axle

748.281 in model 956

1

Collar nut

2

Countershaft gear

3

Tapered roller bearing

4

Bearing outer race

5

Oil deflector

6

Through-drive housing

7

Shim

8

Distance sleeve

9

Shim

10

Bearing outer race

11

Tapered roller bearing

12

Drive pinion

 Danger !

Risk of injury. Skin or eye injuries may result when handling hot or glowing objects.

Wear protective gloves, protective clothing and safety glasses, if necessary.

AS00.00-Z-0002-01A



Remove

1

Disassemble inter-axle differential

AR35.30-W-0467DA

2

Release collar nut (1)

AR35.30-W-0432-05AH

3

Remove counter gear (2)

 Socket wrench bit

*001589750900

 Blocking device

*748589003100

 Ratio wrench

*000589696300

4

Push drive pinion (12) downwards

 While doing so, secure drive pinion (12) against falling out.

5

Remove shim (7) and spacer sleeve (8) from drive pinion (12)

6

Remove tapered roller bearing (3) and oil deflector (5) from through drive housing (6)

7

Remove bearing outer race (10) and shim (9)

8

Remove tapered roller bearing (11) from drive pinion (12)

 Gripper

*000589553400

 Hand pump

*652589003321

 Hydraulic hose (complete)

*652589003323

 Adapter

*715589113400

 Adapter

*715589123400

 Hydraulic cylinder

*715589153400

 Adapter

*748589003400

 Thrust piece

*731589026300



Install

9

Heat tapered roller bearing (11) up to approx. 80 °C and install up to mounting surface on drive pinion (12)

10

Heat up through drive housing (6) in area of bearing outer race (10) to approx. 80 °C

11

Insert shim (9) and install bearing outer race (10) into through drive housing (6)

12

Heat up through drive housing (6) in area of bearing outer race (4) to approx. 80 °C

13

Insert oil deflector (5) and install bearing outer race (4) into through drive housing (6)

14

Mount spacer sleeve (8) and shim (7) onto drive pinion (12)

15

Insert drive pinion (12) into through drive housing (6) and support on toothing

 The through drive housing (6) must rest on the tapered roller bearing (11).

16

Heat up tapered roller bearing (3) to approx. 80 °C and install up to mounting surface on drive pinion (12)

17

Apply light coating of oil to toothing for transmission gear wheel (12) on drive pinion (12)

18

Mount transmission gear wheel (2) with new collar nut (1) onto drive pinion (12)

 Do not yet lock the new collar nut (1).

 Collar nut, countershaft gear to drive pinion

*BA35.30-N-1006-03AH

 Socket wrench bit

*001589750900

 Blocking device

*748589003100

 Ratio wrench

*000589696300

19

Measure installation depth of drive pinion (12), if necessary determine thickness of spacer washer on drive pinion (12)

AR35.30-W-0470-03H

 The measured installation depth and the reference dimension on the drive pinion (12) must match.

If necessary, determine required shim (9) and install:



Repeat operation steps 3 to 19.

20

Secure collar nut (1)

AR35.30-W-0432-03AH

21

Assemble inter-axle differential

AR35.30-W-0467DA

 Axle drive/axle through-drive

Number

Designation

Rear axle 748.281/291

BA35.30-N-1006-03AH

Collar nut, countershaft gear to drive pinion

Nm

855