Disassemble, assemble differential

AR35.30-W-0465A

Disassemble, assemble differential

21.10.09



Disassemble

1

Remove ring gear with differential

AR35.30-W-0464A

2

Detach tapered roller bearings (1 and 15)

 Hand pump

*652589003321

 Hydraulic hose

*652589003323

 Hydraulic cylinder

*715589153400

 Adapter

*715589123400

 Adapter

*715589113400

 Adapter

*748589013400

 Gripper for 233 mm dia. ring gear

*748589043400

 Gripper for 300 mm dia. ring gear

*748589053400

 Thrust piece for 233 mm dia. ring gear

*360589026300

 Thrust piece for 300 mm dia. ring gear

*387589016300

3

Clamp in ring gear with differential on seat of tapered roller bearing (15) on differential side

 Tensioning device

*315589023100

4

Undo serrated bolts (16 and 17)

5

Mark installation position of cover (14) relative to differential housing (2)

6

Detach ring gear (3) with differential housing (2) from cover (14)

 Use a rubber hammer, if necessary.

7

Detach ring gear (3) from differential housing (2)

 Use a rubber hammer, if necessary.

8

Detach differential side gear (5) with pressure plate (4) from differential spider (11)

9

Remove differential spider (11) with differential pinions (9) from cover (14)

10

Remove thrust washers (6)

11

Detach differential pinions (9) with respective spacers (7 and 10) from differential spider (11)

 When removing the differential pinions (9) watch out for any released bearing needles (8).

12

Take differential side gear (12) and pressure plate (13) out of the cover (14)

13

Take cover (14) out of the clamping device



Assemble

14

Clamp cover (14)

 Tensioning device

*315589023100

15

Install pressure plate (13) and differential side gear (12) in the cap (14)

16

Slide spacer rings (10) onto differential spider's (11) bearing shafts

 The chamfered side of the spacer rings (10) must face towards the differential pinion (9).

17

Mount differential pinions (9) centrally onto differential spider's (11) bearing shafts

18

Insert bearing needles (8) using grease into the differential pinions (9)

*BR00.45-Z-1017-06A

19

Mount spacer rings (7) and thrust washers (6) onto differential pinions (9) and install differential spider (11)

20

Mount differential side gear (5) with thrust washer (4) onto differential spider (11)

 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

21

Heat ring gear (3) up to approx. 80 °C and mount all the way onto the differential housing (2)

22

Mount differential housing (2) with ring gear (3) onto cover (14)

 Pay attention to marking. Assemble the differential housing (2) and cover (14) with the same number identification only.

23

Screw-in serrated bolts (17) for cover (14) on differential housing (2) finger-tight

24

Screw-in serrated bolts (16) for ring gear (3) on differential housing (2) finger-tight

25

Tighten serrated bolts (16 and 17)

Serrated bolts (16) for ring gear to differential housing

 Rear axle 748.21/22/23/24

*BA35.30-N-1004-03A

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

*BA35.30-N-1004-03B

Serrated bolts (17) for cover to differential housing

 Rear axle 748.21/22/23/24

*BA35.30-N-1005-03A

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

*BA35.30-N-1005-03B

26

Detach ring gear with differential from tensioning device

 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

27

Heat tapered roller bearings (1 and 15) up to approx. 80 °C and push all the way on

28

Install crown wheel with differential

AR35.30-W-0464A

Number

Designation

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

BA35.30-N-1004-03A

Bolt, top half of differential cover to ring gear

M121

10.9

Nm

120

M121

12.9

Nm

190

M141

10.9

Nm

-

M141

12.9

Nm

-

BA35.30-N-1005-03A

Bolt, top half to bottom half of differential housing

M121.5

10.9

Nm

120

M121.5

12.9

Nm

190

M141.5

10.9

Nm

-

M141.5

12.9

Nm

-

Number

Designation

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

BA35.30-N-1004-03A

Bolt, top half of differential cover to ring gear

M121

10.9

Nm

-

M121

12.9

Nm

-

M141

10.9

Nm

180

M141

12.9

Nm

300

BA35.30-N-1005-03A

Bolt, top half to bottom half of differential housing

M121.5

10.9

Nm

-

M121.5

12.9

Nm

-

M141.5

10.9

Nm

210

M141.5

12.9

Nm

280

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-1004-03B

Bolt, top half of differential cover to ring gear

M121

10.9

Nm

-

120

M121

12.9

Nm

-

190

M141

10.9

Nm

180

-

M141

12.9

Nm

300

-

BA35.30-N-1005-03B

Bolt, top half to bottom half of differential housing

M121.5

10.9

Nm

-

120

M121.5

12.9

Nm

-

190

M141.5

10.9

Nm

210

-

M141.5

12.9

Nm

280

-

Number

Designation

Order number

BR00.45-Z-1017-06A

MB multipurpose grease

A 001 989 34 51 11