Disassembling and assembling output shaft

AR26.50-S-0419B

Disassembling and assembling output shaft

11.11.11



Disassemble



A press with at least 25t is required for the operations described below.

Workshop press

gotis://G_58.2_01.0

1

Disassemble transmission

AR26.10-S-0001B

2

Press off fixed gear (2, 3)

 Thrust sleeve or

*638589003500

 thrust sleeve

*638589013500



Removal plate

WF58.50-N-2650-03A

3

Engage 1st gear

 Push the gearshift sleeve downwards by hand.

4

Press off fixed gear (4, 7)

 Thrust sleeve or

*638589003500

 thrust sleeve

*638589013500



Removal plate

WF58.50-N-2650-03A

5

Remove needle roller bearing (5) and bushing (6)

6

Press off shift mechanism (11) and gearwheel (13)

 Thrust sleeve or

*638589003500

 Thrust sleeve

*638589013500



Removal plate

WF58.50-N-2650-03A

7

Disassemble shift mechanism (11)

 Check wear of the synchronizer rings (13).

AR26.50-S-0419-01A

Check wear limit

AR26.50-S-0420-13B

*BE26.50-N-1001-01E

Feeler gauge

8

Remove roller bearing (12)



Checking

9

Check output shaft (14) and holes of fixed gears (2, 3, 4) for scoring marks

 Replace the parts if necessary.



Assemble



Apply a thin coating of transmission oil to all components before installation

10

Insert roller bearing (12)

 The smaller collar of the roller bearing (12) must face the gearwheel (13).

11

Insert gearwheel (13)

12

Insert roller bearing (12)

 The smaller collar of the roller bearing (12) must face the gearwheel (13).

13

Insert friction ring (8)

14

Insert cone ring (9)

 The guides of the cone ring (9) must engage in the cutouts in the gearwheel (13).

15

Insert synchronizer ring (10)

 The guides of the friction ring (8) must engage in the cutouts in the synchronizer ring (10).

16

Insert synchronizer body of shift mechanism (11) with collar pointing upwards and press on

 The guides of the synchronizer ring (10) must engage in the cutouts in the synchronizer body.

 Press-in sleeve

*638589023500

17

Assemble shift mechanism (11) of 1st/2nd gear

AR26.50-S-0419-01A

18

Insert synchronizer ring (10)

 The guides of the synchronizer ring (10) must engage in the cutouts in the synchronizer body.

19

Insert cone ring (9)

20

Insert friction ring (8)

 The guides of the friction ring (8) must engage in the cutouts in the synchronizer ring (10).

21

Press on bushing (6) as far as end stop

 Press-in sleeve

*638589033500

22

Insert needle roller bearing (5) and gearwheel (7)

 The guides of the cone ring (9) must engage in the cutouts in the gearwheel (7).

23

Press on fixed gear (4) with collar pointing upwards as far as end stop

 When pressing on, push the gearwheel (7) down in order to prevent it from jumping out of the guides of the friction ring (8).

 Press-in sleeve

*638589043500

24

Press on fixed gear (3) with collar pointing downwards as far as end stop

 Press-in sleeve

*638589043500

25

Press on fixed gear (2) with collar pointing upwards as far as axial stop

 Press-in sleeve

*638589043500

26

Assemble transmission

AR26.10-S-0001B

Number

Designation

Model
638

BE26.50-N-1001-01E

Wear limit between synchronizer ring and gearwheel

mm

0.8