Disassembling and assembling output shaft

AR26.50-S-0419A

Disassembling and assembling output shaft

27.2.12



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-0001A

2

Unscrew rigging screw (2)

3

Press off ball bearing (3) and fixed gears (5, 6)

 Do not mix up the shims (4) with the shims of the drive shaft.

 Thrust piece

*638589013500



Removal plate

WF58.50-N-2650-02A

4

Engage 1st gear at shift mechanism (14) and place removal plate between gearwheel (10) and sliding sleeve of shift mechanism



Removal plate

WF58.50-N-2650-03A

5

Insert thrust sleeve, press off fixed gear (7) and gearwheel (10) and remove needle roller bearing (8)

 Thrust sleeve

*638589003500

6

Engage neutral at shift mechanism (14)

7

Press off bushing (9), shift mechanism (14) and gearwheel (16)

 Thrust sleeve

*638589003500



Removal plate

WF58.50-N-2650-02A

8

Disassemble shift mechanism (14)

AR26.50-S-0419-01A

9

Remove roller bearing (15)



Checking

10

Check wear of the synchronizer rings (13).

 Fit a new friction ring (11), cone ring (12) and synchronizer ring (13) if necessary.

AR26.50-S-0420-13B

*BE26.50-N-1001-01E

Feeler gauge

11

Check output shaft (17) and holes of fixed gears (5, 6, 7) for wear

 Replace the parts if necessary.



Assemble



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

12

Insert roller bearing (15)

 The smaller collar of the roller bearing (15) must face the gearwheel (16).

13

Insert gearwheel (16)

14

Insert roller bearing (15)

 The smaller collar of the roller bearing (15) must face the gearwheel (16).

15

Insert friction ring (11)

16

Insert cone ring (12)

 The guides of the cone ring (12) must engage in the cutouts in the gearwheel (16).

17

Insert synchronizer ring (13)

 The guides of the friction ring (12) must engage in the cutouts in the synchronizer ring (13).

18

Insert synchronizer body of shift mechanism (14) with collar pointing upwards and press on

The guides of the synchronizer ring (13) must engage in the cutouts in the synchronizer body.

 Press-in sleeve

*638589023500

19

Assemble shift mechanism (14) of 1st/2nd gear

AR26.50-S-0419-01A

20

Insert synchronizer ring (13)

 The guides of the synchronizer ring (13) must engage in the cutouts in the synchronizer body.

21

Insert cone ring (12)

22

Insert friction ring (11)

 The guides of the friction ring (11) must engage in the cutouts in the synchronizer ring (13).

23

Press on bushing (9) as far as axial stop

 Press-in sleeve

*638589033500

24

Insert needle roller bearing (8) and gearwheel (10)

 The guides of the cone ring (12) must engage in the cutouts in the gearwheel (10).

25

Press on fixed gear (7) with collar pointing upwards as far as axial stop

 When pressing on, push the gearwheel (10) down in order to prevent it from jumping out of the guides.

 Press-in sleeve

*638589043500

26

Press on fixed gear (6) with collar pointing downwards as far as axial stop

 Press-in sleeve

*638589043500

27

Press on fixed gear (5) with collar pointing upwards as far as axial stop

 Press-in sleeve

*638589053500

28

Insert removed shims (4)

 Do not mix up the shims (4) with the shims of the drive shaft.

29

Press on ball bearing (3) with groove pointing upwards

30

Screw in rigging screw (2)

 Coat the thread with thread locking compound.

 Engine 111

*BA26.50-N-1003-01E

 Engine 601

*BA26.50-N-1003-01G

Loctite 243

*BR00.45-Z-1133-02A

31

Assemble transmission

AR26.10-S-0001A

Number

Designation

Model
638

BE26.50-N-1001-01E

Wear limit between synchronizer ring and gearwheel

mm

0.8

Number

Designation

Model 638 with engine 111.948/978
without Code G40

BA26.50-N-1003-01E

Clamping screw to output shaft

Nm

95

Number

Designation

Model 638 with engine 601.942/970
without Code G40

BA26.50-N-1003-01G

Clamping screw to output shaft

Nm

95

Number

Designation

Order number

BR00.45-Z-1133-02A

Loctite 243

A 613 989 09 71