Remove/install interwheel differential lock

AR35.40-B-0650A

Remove/install interwheel differential lock

01.02.2018

Rear axle

748.590/594 in model 934.2, 958.4

1

Shifting collar

2

Governor fork

3

Pressure spring

4

Compensating washer

5

Drive shaft

6

O-Ring

7

Bushing

8

Sealing gasket

9

Cover

10

Screw (mechanic lock of differential)

11

Bolt



Remove

1

Remove the differential assembly

Type 934.2/ 958.4 rear shaft 748.594

AR35.30-B-0432E

Type 934.2/ 958.4 rear shaft 748.590

AR35.30-W-0432D

2

Remove the screw (10) of the mechanic lock of differential

3

Remove the screw (11) and remove the cover (9) with the sealing gasket (8)

4

Remove the camshaft (5)

 Insert the screw (11) into the threaded bore on the camshaft (5) and extract.

5

Remove the coupling sleeve (1) from the control fork (2)

6

Remove the control fork (2) and the pressure spring (3)

 Mark the installation position of the control fork (2). The pressure spring (3) which is on a preliminary pressure.



Check

7

Check the bushing (7) for wear and damage

 If required, replace the bushing (7).



Install

8

Install the control fork (2) and the pressure spring (3)

 Observe the correct installation position of the control fork (2) on the differential housing.

 Assembly arbor

*748589021500

 Guide drift

*748589011500

9

Install the O-ring (6) and the current compensating washer (4) on the camshaft (5)

 Install a new O-ring (6) on the camshaft (5).

10

Install the camshaft (5)

 Apply synthetic grease to the bushing (7) on the differential housing.

Synthetic grease 50 g

*BR00.45-Z-1027-06A

11

Install the cover (9) with a new sealing gasket (8)

 Install the new sealing gasket (8) with the green side facing the differential housing.

12

Install the coupling sleeve (1) on the control fork (2)

 Centering tool

*748589001500

13

Tighten the screw (11) until the stop on the cover (9)



Measure

14

Check the axial clearance of the coupling sleeve (1)

AR35.40-B-0650-01A

 Screw/bolt, interwheel differential lock switch cylinder to axle drive

*BA35.40-N-1002-01A

Axial clearance of the crosswise blocking engagement bushing

*BE35.40-B-1001-02B

15

Install the differential assembly

Type 934.2/ 958.4 rear shaft 748.594

AR35.30-B-0432E

Type 934.2/ 958.4 rear shaft 748.590

AR35.30-W-0432D

Crosswise blocking

Number

Designation

Rear axles 748.590/594

BE35.40-B-1001-02B

Axial clearance of the crosswise blocking engagement bushing

mm

1,5...2,0

 Differential lock

Number

Designation

Rear axle 748.590/594

BA35.40-N-1002-01A

Screw/bolt, interwheel differential lock switch cylinder to axle drive

Nm

25

Repair materials

Number

Designation

Order number

BR00.45-Z-1027-06A

Synthetic grease 50 g

A 001 989 32 51 10