Disassemble/assemble ring gear with differential

AR33.30-G-0465C

Disassemble/assemble ring gear with differential

26.06.2017

Front axle

737.365/366/367/368 in model 437.4

Shown on differential of front axle 737.365

1

Ring gear

2

Differential housing

3

Nut

4

Small tapered roller bearing

5

Large tapered roller bearing

Shown on differential of front axle 737.365

1

Ring gear

8

Short differential gear shafts

12

Thrust segment

2

Differential housing

9

Thrust segment

13

Differential pinion

6

Differential side gear

10

Differential pinion

14

Differential side gear

7

Retaining ring

11

Long differential gear shaft

15

Thrust plate

 

Disassemble/assemble

1

Disassemble front axle

AR33.10-G-0060C

 Assembly: The axle drive is adjusted during front axle assembly.
During the adjustment operations on the axle drive, the new small tapered roller bearing (4) and the new large tapered roller bearing (5) must be installed.

2

Mark ring gear (1) relative to differential housing (2)

3

Remove crown gear screws (1) on differential housing (2)

 Assembly: Replace screws and nuts (3).
Tighten the nuts (3) in a crosswise sequence.

 Front axle 737.365/366
Assembly: Depending on the version, either one or 4 of these bolts may be fitted bolts.
The fitted bolt with the thicker shank must be screwed into the large hole.

 Front axle 737.367/368
Assembly: No fitted bolts are installed.

 Bolt, ring gear to differential housing

*BA33.30-N-1001-04B

4

Detach ring gear (1) from differential housing (2)

 Assembly: Observe markings.

5

Pull small tapered roller bearing (4) off differential housing (2)

 To pull off, also use drift with Ø 70 mm and length of approx. 80 mm.

 Assembly: Replace the small tapered roller bearing (4), but do not yet install it.
The small tapered roller bearing (4) is installed when the axle drive is adjusted.

 Puller

*000589453300

6

Detach large tapered roller bearing (5) from ring gear (1)

 To detach, also use drift with Ø 70 mm and length of approx. 80 mm.

 Assembly: Replace the large tapered roller bearing (5), but do not yet install it.
The large tapered roller bearing (5) is installed when the axle drive is adjusted.

 Puller

*000589453300

7

Remove differential side gear (6) from ring gear (1)

8

Remove retaining rings (7) from the groove

9

Pull out both short differential gear shafts (8)

 Assembly: Coat the short differential gear shafts (8) with running-in paste.

Molybdenum disulfide running-in paste

*BR00.45-Z-1045-06A

10

Remove both starting segments (9) and differential pinions (10)

 Assembly: Coat starting segments (9) with running-in paste.

Molybdenum disulfide running-in paste

*BR00.45-Z-1045-06A

11

Remove long differential gear shaft (11)

 Assembly: Coat long differential gear shaft (11) with running-in paste.

Molybdenum disulfide running-in paste

*BR00.45-Z-1045-06A

12

Take out both starting segments (12) and differential bevel gears (13)

 Assembly: Coat starting segments (12) with running-in paste.

Molybdenum disulfide running-in paste

*BR00.45-Z-1045-06A

13

Remove differential side gear (14) and thrust plate (15) from differential housing (2)



Clean

14

Clean all parts



Check

15

Check all parts for wear and damage

If there are problems



Replace worn or damaged parts.

 Assembly:
The ring gear (1) may only be replaced together with the drive pinion in the event of a complaint.
Ensure manufacturing numbers are the same.
The differential can otherwise be damaged.

 Front axle 737.365/366
Assembly: The ring gear (1) is available with 8-bolt or 12-bolt threaded connections, and the differential housing (2) is only available with 12-bolt connections.
When using a crown gear (1) with 8­bolt threaded connection, only 7 screws and one fit screw, or for an alternative version, 4 screws and 4 fit screws can be used.
Alternatively the ring gear (1) with a 12-bolt threaded connection can be installed. For this 11 screws and a fit screw, or for an alternative version, 8 screws and 4 fit screws must be used.

 Front axle 737.367/368
Assembly: The ring gear (1) is attached to the differential housing (2) by a 16­bolt threaded connection.

16

Assemble in the reverse order

 Ring gear with differential

Number

Designation

Front axle 737.365/366/375/376

Front axle 737.367/368

BA33.30-N-1001-04B

Bolt, ring gear to differential housing

Fit bolt

Nm

105

-

Screw

Nm

105

100

Repair materials

Number

Designation

Order number

BR00.45-Z-1045-06A

Molybdenum disulfide running-in paste

A 000 989 51 51 10