Remove/install drive pinion

AR35.30-B-0458E

Remove/install drive pinion

04.08.2020

Rear axle

743 in model 688.277

Rear axle

743.498 in model 688.272/276

Modification notes

21.08.2019

Mounting nut of drive pinion coupling flange

BA35.30-B-1001-06C

21.08.2019

Threaded rings of drive pinion bearings

BA35.30-B-1002-06C

21.08.2019

Drive pinion (basic depth and thickness or compensation washers)

BE35.31-B-1005-03C

30.10.2019

Drive pinion (basic depth and thickness or compensation washers)

BE35.31-B-1005-03C

1

Coupling fork

2

Threaded ring

3

Tapered roller bearing

4

Drive pinion

5

Cylindrical roller bearings

6

Shims

7

Lock

8

Screw

9

Rear axle housing

10

Retaining ring



Remove

1

Remove the crown gear with the differential

AR35.30-B-0464E

2

Remove the screw (8) and lock (8) from the threaded ring of drive pinion (2)

3

Remove the coupling fork (1)

AR35.30-B-4670-01A

 Retainer wrench

*717589003100

 Puller

*035589013300

4

Prepare the drive pinion for removal

AR35.30-B-0458-04A

 Torque multiplier

*000589021300

 Claw wrench

*055589050700

5

Remove the drive pinion assembly by tapping on its end with a gentle material mandrel inside the housing

6

Remove the compensation washer from housing (6)

7

Remove the cylindrical roller bearings from the housing (5)

AR35.30-B-0440-04A

 Drift

*730589031500

8

Disassemble the drive pinion assembly

AR35.30-B-0459D



Install

9

Assemble the drive pinion assembly

AR35.30-B-0459D

10

Install the cylindrical roller bearings on the housing (5)

Replacing cylindrical roller bearing in axle housing

AR35.30-B-0440-04A

 Drift

*730589031500

11

Prepare the drive pinion for installation

AR35.30-B-0458-05A

12

Install the drive pinion with bearings on the rear axle housing

AR35.30-B-4815-09A

13

Remove the flange and assemble coupling fork (1)

AR35.30-B-4670-03A

 Mounting nut of pinion coupling flange

*BA35.30-B-1001-06C

 Retainer wrench

*717589003100

 Puller

*035589013300

14

Tighten and screw the threaded ring (2)

 Apply a sealing agent on the screwed surface of the ring.

Terolan 307/II, Dichtin 51, epple 22 sealant

*BR00.45-Z-1018-01A

 Threaded rings of pinion bearings

*BA35.30-B-1002-06C

 Torque multiplier

*000589021300

 Claw wrench

*055589050700

15

Check the basic measurement of the drive pinion depth

AR35.30-B-0458-01D

Terolan 307/II, Dichtin 51, epple 22 sealant

*BR00.45-Z-1018-01A

Pinion (basic depth and thickness or compensation washers)

*BE35.31-B-1005-03C

 Adjustment tool

*055589342100

 Adjusting element

*318589012102

 Dial gage

*001589532100

16

Retighten the threaded ring (2)

 Apply a sealing agent on the screwed surface of the ring.

 Threaded rings of pinion bearings

*BA35.30-B-1002-06C

 Torque multiplier

*000589021300

 Claw wrench

*055589050700

17

Lock the threaded ring with lock (7)

18

Install the crown gear with the differential

AR35.30-B-0464E

Differential. ring ear and pinion check values

Number

Designation

743.4 Rear axles

BE35.31-B-1005-03C

Pinion (basic depth and thickness or compensation washers)

Basic depth

mm

109,5

Thickness of the compensating washers

mm

0,10, 0,15, 0,20, 0,50

 Pinion

Number

Designation

Rear axle 743.4

BA35.30-B-1001-06C

Mounting nut of pinion coupling flange

M32

Nm

300

M40 Hex

Nm

-

M40 Dodecagonal

Nm

-

 Pinion

Number

Designation

Rear axle 743.4

BA35.30-B-1002-06C

Threaded rings of pinion bearings

M115

Nm

1050

M140

Nm

-

M150

Nm

-

M170

Nm

-

Repair materials

Number

Designation

Order number

BR00.45-Z-1018-01A

Terolan 307/II, Dichtin 51, epple 22 sealant

Use corresponding commercially available repair materials.