Remove/disassemble range group

AR26.31-W-3101A

Remove/disassemble range group

7.8.08

 

Removing, disassembling

1

Drain transmission oil

2

Unscrew screw plug (20) and remove oil strainer (18) with spring (17) and sealing ring (19)

3

Detach oil cooler lines

 Only on vehicles with code (N55) Transmission oil cooling.

4

Disconnect propeller shaft from output flange (33)

5

Remove retarder

 Applies to vehicles equipped with retarder only.

Model 375.4, 944 with code (BA9) Voith secondary retarder R 115

AR43.30-W-0002B

Model 930, 932, 933, 934, 950, 952, 953, 954 with code (BA9) Voith secondary retarder R 115

AR43.30-W-0002A

Model 374, 375, 930, 932, 933, 934, 940, 942, 943, 944, 950, 952, 953, 954, 958 with code (BA1) performance-optimized Voith retarder

AR43.30-W-0002HV

6

Remove output flange (33)

AR26.40-W-0007A

7.1

Remove end cover (27)

Transmission without power takeoff

AR26.30-W-3001A

7.2

Remove PTO

Transmission with PTO

PTO NA 121

AR26.45-W-0001C

Power takeoff PTO 123, 124

AR26.45-W-0001A

Power takeoff PTO 125-10b

AR26.45-W-0001I

Power takeoff PTO 125-11b/2c, 125-11 c/2c

AR26.45-W-0001N

Power takeoff PTO 125-11 b/1b, 125-11 b/1c

AR26.45-W-0001O

8

Remove oil pump (25), shim (24) and valve element (23)

AR26.55-W-3000A

9

Detach housing cover (32)

AR26.30-W-3000A

10

Remove pulse star (31)

11.1

Remove lock rod for interlock

Vehicles with code (GS1) "Manual" gearshift or with code (GS3) "Hydraulic" gearshift

AR26.60-W-0025A

11.2

Remove stop plug (7), take out lock rod (4) and spring (6)

Vehicles without code (GS1) "Manual" gearshift or without code (GS3) "Hydraulic" gearshift

12

Remove range sensor (SRA) (B63)

 Only for vehicles with code (GS2) Gear control or with code (GS7) Gear control II and with code (BD9) Telma retarder Focal F 3300.

13.1

Remove range group shift cylinder (13)

Vehicles with code (GS1) "Manual" gearshift or with code (GS3) "Hydraulic" gearshift

AR26.18-W-3100B

13.2

Remove range group shift cylinder (14)

Vehicles with code (GS2) Gear control

AR26.18-W-3100A

13.3

Remove range module

Vehicles with code (GE3) Mercedes PowerShift or with code (GE7) Mercedes PowerShift 2 or with code (GS7) Gear control II

AR26.20-W-1006A

14

Unscrew bearing pin (21).

15

Turn shift piston through 180° with piston rod (12) and pull out

16

Remove radial shaft seal and pilot bushing for piston rod

AR26.31-W-0101A

17

Unscrew bolts around circumference of transmission housing

 On vehicles with code (BA9) Voith secondary retarder R 115 or with code (BA1) Performance-optimized Voith retarder in addition unscrew two bolts and one nut in the retarder opening.

18

Install guide bolt (34).



Guide bolt for installing range group

WF58.50-N-3100-01A

19

Pull off rear section of transmission housing (15)

 Do not damage the sealing surface.

Hand pump

*652589003321

Hydraulic hose

*652589003323

Puller

*715589043300

Adapter

*715589113400

Adapter

*715589123400

Adapter plate

*715589143400

Hydraulic cylinder

*715589153400

20

Remove ball bearing (29), shim (28) and spacer ring (30)

 Spacer ring (30) is only installed with code (BA9) Voith secondary retarder R 115.

21

Remove O-rings (5, 9)

22

Remove shift fork (11) and take out sliding blocks (10)

23

Detach planetary gear set with shift mechanism (8)

24

Check sun gear (2) for wear and damage, replace if necessary

 To replace the sun gear (2), remove circlip (3) and detach the sun gear (2).

25

Disassemble planetary gear set with shift mechanism (8)

AR26.50-W-3102A