Assemble hub reduction gear

Modification notes

 Rear axle hub drive

417 589 01 43 00

Assembly tool

Press-in tool

Basic drift

Assembly tool

406 589 04 15 00

437 589 01 43 00

437 589 02 43 00

Repair materials

G33.25-3250-01

G33.25-3216-01

G35.25-3139-01

1 Mount oil thrower (19) to driven gear (14).

 The narrow side of the oil thrower (19) must face towards the gear of the driven gear (14).

2 Mount thrust plate (14.1) on output gear (14).

 The groove of the thrust plate (14.1) must point toward the cylindrical roller bearing (17).

3 Install cylindrical roller bearing (17) into hub reduction gear housing (2).

 The cylindrical roller bearing (17) must be installed all the way to the end stop.

4 Place driven gear (14) into wheel hub drive housing (2) from rear and install in cylindrical roller bearing (17).

G33.25-3254-01

5 Coat cylindrical roller bearing (9) with long-life grease and install in hub reduction gear housing (2).

6 Install shims, ABS rotor (11) and retaining ring (10).

 Make sure that the driven gear (14) is installed up the end stop in the cylindrical roller bearing (17), as otherwise the a faulty measurement may be made.

 The retaining ring (10) must be fitted with zero clearance, fit shims under
ABS rotor (11).
Determine the number of shims used with the old ABS rotor (11) and then install the new ABS rotor (11).
An ABS rotor (11) may only be used 1 time.

7 Determine the difference between the bearing seat (arrow) in the axle tube (18), as well as the protrusion of the cylindrical roller bearing (17) in the hub reduction gear housing (2) using a depth micrometer.

 Note the determined value for the thickness of the shims.

8 Install shims in the bearing seat (arrow).

9 Replace sealing ring in axle tube (18).

 Coat sealing ring using long-life grease.
Install sealing ring using  standard drift and  press-in tool.

The measuring procedure on the hub reduction gear housing (2) is shown without an installed ABS rotor.

G35.25-3149-03

G33.25-3214-01

10 Install assembly ring (16) between cylindrical roller bearing (15) and output gear (14).

 Assembly ring (16) is included in the repair kit of the new cylindrical roller bearing (15).

Shown on a removed driven gear (14)

G35.25-3140-01

11 Using
 basic drift and
 assembly tool, install cylindrical roller bearing (15) into hub reduction gear housing (2).

 To prevent the rollers from falling out, do not remove the assembly ring (16) until the cylindrical roller bearing (15) has been installed.

G35.25-3141-01

G35.25-3142-01

12 Coat sealing ring (12) with long-life grease and install in hub reduction gear housing (2) using  assembly tool.

G35.25-3153-01

G35.25-3134-01

13 Fit spacer washer, cylindrical roller bearing (7) and press spacer ring (8) onto drive gear (4).

 Before pressing on with a hot plate heat up cylindrical roller bearing (7) and spacer ring (8) to
max. 80 °C.

14 Install circlip (6).

 After the cooling down of the cylindrical roller bearing (7) and spacer ring (8).

G35.25-3147-01

G33.25-3254-01

G35.25-3131-01

15 Coat gearing of rear-axle shaft (3) using long-life grease.

16 Fit drive wheel (4) onto rear axle shaft (3) and tighten bolt (5).

 Replace bolt (5)

17 Coat rollers of cylindrical roller bearing (9) with long-life grease and then position the rollers of the cylindrical roller bearing (9) on the outer bearing race.

18 Install rear axle shaft (3) with drive wheel (4) into hub reduction gear housing (2).

G35.25-3132-01

19 Coat contact surface on hub reduction gear housing (2) and bolts (1) with sealant.

20 Mount hub reduction gear housing (2) and tighten bolts (1) .

 Center the hub reduction gear housing (2) on the bearing seat using the bolts (1).