Dismantle, assemble drive shaft.

AR26.50-S-4744B

27.2.12

ENGINE 111.950 /980, 611.980 in MODEL 638 except CODE (G40) Automatic transmission

S26.50-3029-09

1 Drive shaft (complete)

2 Shift mechanism (5th gear)

3 Synchronizer ring

4 Gearwheel (5th gear)

5 Needle roller bearing

11 Thrust bearing

12 Roller bearing

13 Gearwheel (3rd gear)

14 Drive shaft

6 Bearing sleeve

7 Gearwheel (4th gear)

8 Bearing sleeve

9 Shift mechanism (3rd/4th gear)

10 Thrust plate

S26.50-3028-01

15 4th gear gearwheel

16  Puller plate

	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	Disassemble shift mechanism (2)		AR26.50-S-4744-03B
3	Remove synchronizer body using puller plate (16)	 Use thrust piece to remove parts.
		 Thrust piece	*638589013500
		Removal plate
4	Remove gearwheel (4) with synchronizer ring (3)	 Check wear of synchronizer ring (3)
		Check wear limit	AR26.50-S-0420-13A
			*BE26.50-N-1001-01E
		Removal plate
5	Remove gearwheel (7) with synchronizer ring (3)	 Check wear of synchronizer ring (3)
		Check wear limit	AR26.50-S-0420-13A
			*BE26.50-N-1001-01E
		Removal plate
6	Remove needle roller bearing (5) and bushing (6) from drive shaft (14)	 Do not get the components mixed up.
7	Disassemble shift mechanism (9)		AR26.50-S-4744-02B
8	Detach synchronizer ring	 Use thrust sleeve to remove parts.
		 Thrust sleeve	*638589003500
		Removal plate	WF58.50-N-2650-02A
9	Remove needle roller bearing (5) and bushing (8)	 Do not get the components mixed up.
10	Detach thrust plate (10)
11	Remove thrust bearing (11)
12	Remove gearwheel (13) with synchronizer ring (3)	 Check wear of synchronizer ring (3)
		Check wear limit	AR26.50-S-0420-13A
			*BE26.50-N-1001-01E
		Removal plate
13	Remove both roller bearings (12)
14	Remove thrust bearing (11)
	Assemble
	Apply a thin coating of transmission oil to all bearings before installation
15	Insert thrust bearing (11)
16	Insert both roller bearings (12)
17	Insert gearwheel (13)
18	Insert synchronizer ring (3)
19	Insert thrust bearing (11)
20	Insert thrust plate (10)
21	Insert synchronizer body with larger collar upwards and press on	 The synchronizer ring guides (3) must engage with the cutouts on the synchronizer body.
		 Fixture	*638589003100
		 Press-in sleeve	*638589063500
22	Assemble shift mechanism (9)		AR26.50-S-4744-02B
23	Insert needle roller bearing (5) and bushing (8) into drive shaft (14)
24	Press on synchronizer ring (3) with bushing (8) up to the stop and insert needle roller bearing (5)	 The guides of the synchronizer ring (3) must engage with the cutouts of the shift mechanism (9).
		 Fixture	*638589003100
		 Press-in sleeve	*638589073500
25	Insert gearwheel (7)
26	Press bushing (6) all the way on and insert needle roller bearing (5)	 Do not get the components mixed up.
		 Fixture	*638589003100
		 Press-in sleeve	*638589073500
27	Insert gearwheel (4)
28	Insert synchronizer ring (3)
29	Insert synchronizer body of shift mechanism (2) and press on with groove for retaining ring facing upwards	 The guides of the synchronizer ring (3) must engage in the cutouts of the synchronizer body.
		 Fixture	*638589003100
		 Press-in sleeve	*638589073500
30	Assemble shift mechanism (5)		AR26.50-S-4744-03A
31	Assemble transmission		AR26.10-S-0001B