Disassembling and assembling pinion housing with drive pinion

AR35.30-W-0470A

Disassembling and assembling pinion housing with drive pinion

21.10.09



Disassemble

1

Remove pinion housing (9) with drive pinion gear (15)

AR35.30-W-0469A

2

Remove temperature sensor (7)

 Only with maintenance system (WS).

3

Release collar nut (1)

AR35.30-W-0432-05A

4

Remove connector flange (2)

 Retainer wrench

*717589003100

 Socket wrench bit with 300 mm dia. ring gear.

*001589220900

 Socket wrench bit with 233 mm dia. ring gear.

*001589750900

 Ratio wrench

*000589696300

 Puller

*035589013300

5

Remove radial sealing ring (4)

6

Press drive pinion (15) from pinion housing (9)

 Do not damage the teeth on the drive pinion.

7

Remove shim (11) and spacer tube (12) from drive pinion gear (15)

 Spacer tube (12) with 300 mm dia. ring gear only.

8

Remove the outer tapered roller bearing (5) from the pinion housing (9)

9

Remove inner tapered roller bearing (14) from drive pinion (15)

 Hand pump

*652589003321

 Hydraulic hose

*652589003323

 Hydraulic cylinder

*715589153400

 Adapter

*715589113400

 Adapter

*715589123400

 Adapter

*748589003400

 Thrust piece

*731589026300

 Gripper for 300 mm dia. ring gear.

*000589543400

 Gripper for 233 mm dia. ring gear.

*000589553400

10

Remove inner outer race (13) and external outer race (6) from pinion housing (9)

 Extractor

*000589163300

11

Remove oil retainer (10) from pinion housing (9)



Assemble

12

Install oil retainer (10) in the pinion housing (9)

 Drift with 300 mm dia. ring gear.

*305589021500

 Drift with 233 mm dia. ring gear.

*731589001500

 Danger!

Risk of injury to skin and eyes caused by handling hot or glowing objects.

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

AS00.00-Z-0002-01A

13

Heat the pinion housing (9) to approx. 80 °C and fit inner outer ring (13) all the way into the pinion housing (9)

 Drift with 233 mm dia. ring gear.

*343589071500

 Drift with 300 mm dia. ring gear.

*352589031500

 Danger!

Risk of injury to skin and eyes caused by handling hot or glowing objects.

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

AS00.00-Z-0002-01A

14

Heat the pinion housing (9) to approx. 80 °C and fit external outer ring (6) all the way into the pinion housing (9)

 Drift with 233 mm dia. ring gear.

*343589051500

 Drift with 300 mm dia. ring gear.

*363589001500

15

Determine thickness of shim (11) on drive pinion (15)

AR35.30-W-0470-03A

*BE35.30-N-1004-01A

 Danger!

Risk of injury to skin and eyes caused by handling hot or glowing objects.

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

AS00.00-Z-0002-01A

16

Heat inner tapered roller bearing (14) up to approx. 80 °C and fit all the way into the inner ring on the drive pinion (15)

17

Mount spacer tube (12) and determined shim (11) onto drive pinion (15)

 Spacer tube (12) with 300 mm dia. ring gear only.

18

Mount pinion housing (9) on the drive pinion (15)

19

Heat outer tapered roller bearing (5) up to approx. 80 °C and fit all the way into the inner ring on the drive pinion (15)

20

Checking friction torque of tapered roller bearings

AR35.30-W-0470-04A

*BE35.30-N-1003-01A

 Rear axle 748.21/22/23/24/26/27

*BA35.30-N-1007-03A

 Rear axle 740.892/894/896, 748.704/705/706/708

*BA35.30-N-1007-03B

 Ratio wrench

*000589696300

 Socket wrench bit with 300 mm dia. ring gear.

*001589220900

 Socket wrench bit with 233 mm dia. ring gear.

*001589750900

 Torque wrench

*745589012100

 Retainer wrench

*717589003100

21

Install radial sealing ring (4)

 Drift with 233 mm dia. ring gear.

*387589071500

 Drift with 300 mm dia. ring gear.

*740589001500

22

Install coupling flange (2) with new collar nut (1)

 Oil teeth of drive pinion (15) lightly.

 Rear axle 748.21/22/23/24/26/27

*BA35.30-N-1007-03A

 Rear axle 740.892/894/896, 748.704/705/706/708

*BA35.30-N-1007-03B

 Ratio wrench

*000589696300

 Socket wrench bit with 300 mm dia. ring gear.

*001589220900

 Socket wrench bit with 233 mm dia. ring gear.

*001589750900

 Retainer wrench

*717589003100

23

Secure collar nut (1)

AR35.30-W-0432-03A

24

Install temperature sensor (7) with new sealing ring (8)

 Only with maintenance system (WS).

25

Fit pinion housing (9) with drive pinion gear (15)

AR35.30-W-0469A

Number

Designation

Rear axle 748.21/22/23/24 with ring gear 233 mm dia.

Rear axle 748.21/22/23/24 with ring gear 300 mm dia.

BE35.30-N-1003-01A

Friction torque of tapered roller bearings on drive pinion

Nm

2...3

2...3

BE35.30-N-1004-01A

Axial play at rear axle shaft (planetary gears)

mm

0.2...0.3

0.2...0.3

Number

Designation

Rear axle 748.26/27 with ring gear 233 mm dia.

Rear axle 748.26/27 with ring gear 300 mm dia.

BE35.30-N-1003-01A

Friction torque of tapered roller bearings on drive pinion

Nm

2 to 8

2 to 8

BE35.30-N-1004-01A

Axial play at rear axle shaft (planetary gears)

mm

0.2...0.3

0.2...0.3

Number

Designation

Rear axle 740.892/894/896, 748.701/704/707 with 300 mm ring gear-dia.

Rear axle 748.702/705
with ring gear 233 mm dia.

BE35.30-N-1003-01A

Friction torque of tapered roller bearings on drive pinion

Nm

2...3

2...3

BE35.30-N-1004-01A

Axial play at rear axle shaft (planetary gears)

mm

0.2...0.3

0.2...0.3

Number

Designation

Rear axle (NAG)
748.703/706
with 233 mm ring gear-dia.

Rear axle (NAG)
740.893/895/
897/898,
748.708
with 300 mm ring gear-dia.

BE35.30-N-1003-01A

Friction torque of tapered roller bearings on drive pinion

Nm

2 to 8

2 to 8

BE35.30-N-1004-01A

Axial play at rear axle shaft (planetary gears)

mm

0.2...0.3

0.2...0.3

Number

Designation

Rear axle 748.21/22/23/24
without throughdrive, 233 mm Ø ring gear

BA35.30-N-1007-03A

Collar nut, coupling flange to drive pinion gear

M451.5

Nm

900

M551.5

Nm

-

Number

Designation

Rear axle 748.21/22/23/24
without throughdrive, 300 mm Ø ring gear

BA35.30-N-1007-03A

Collar nut, coupling flange to drive pinion gear

M451.5

Nm

-

M551.5

Nm

900

Number

Designation

Rear axle 748.26/27
without through-drive, ring gear Ø 233 mm

BA35.30-N-1007-03A

Collar nut, coupling flange to drive pinion gear

M451.5

Nm

900

M551.5

Nm

-

Number

Designation

Rear axle 748.26/27
without through-drive, 300 mm dia. ring gear

BA35.30-N-1007-03A

Collar nut, coupling flange to drive pinion gear

M451.5

Nm

-

M551.5

Nm

900

Number

Designation

Rear axle 740.892/894/896, 748.701/704/707, without through-drive, 300 mm dia. ring gear

Rear axle
748.705
without through-drive,
233 mm dia. ring gear

BA35.30-N-1007-03B

Collar nut, coupling flange to drive pinion gear

M451.5

Nm

-

900

M551.5

Nm

900

-

Number

Designation

Rear axle 748.706, (NAG), without through-drive,
233 mm dia. ring gear

Rear axle 748.708, (NAG), without through-drive,
300 mm dia. ring gear

BA35.30-N-1007-03B

Collar nut, coupling flange to drive pinion gear

M451.5

Nm

900

-

M551.5

Nm

-

900