CLAAS Axion 850-810 Repair Manual - PDF DOWNLOAD

D FRONT AXLE

Technical support Axion 850-810

Repair – Chapter D 00 1136 265 1 – Edition 11.2010

CONTENTS

D1 – NON REINFORCED FRONT AXLES GENERAL SPECIFIC TORQUES AND SEALING PRODUCTS FOR THE JOINT BOX ................................................................. D1.2 SPECIFIC TORQUE AND SEALING PRODUCTS FOR THE SUSPENSION ............................................................... D1.3 SPECIFIC TORQUE AD SEALING PRODUCTS OF THE BEVEL GEAR ..................................................................... D1.4 SPECIFIC TORQUE AND SEALING PRODUCTS OF THE DIFFERENTIAL................................................................ D1.5 SPECIFIC TORQUE AD SEALING PRODUCTS OF THE BEVEL GEAR ..................................................................... D1.6 SPECIFIC TORQUE AND SEALING PRODUCTS OF THE EPICYCLICAL REDUCER ............................................... D1.7 REMOVING THE FRONT AXLE .................................................................................................................................... D1.8 REFITTING THE FRONT AXLE ..................................................................................................................................... D1.9

EPICYCLOID REDUCER EXPLODED VIEW ........................................................................................................................................................ D1.10 PREPARATION ............................................................................................................................................................ D1.10 REMOVING THE EPICYCLIC REDUCER ................................................................................................................... D1.11 REFITTING THE EPICYCLIC REDUCER.................................................................................................................... D1.13

JOINT UNIT EXPLODED VIEW ........................................................................................................................................................ D1.15 PREPARATION TO REMOVING THE JOINT BOX ..................................................................................................... D1.15 REMOVING THE JOINT BOX ...................................................................................................................................... D1.16 DISMANTLING ............................................................................................................................................................. D1.17 REFITTING................................................................................................................................................................... D1.18 REFIT THE JOINT BOX ............................................................................................................................................... D1.21 ADJUSTMENT.............................................................................................................................................................. D1.24

SUSPENSION EXPLODED VIEW OF THE SUSPENSION ................................................................................................................. D1.25 REMOVING THE SUSPENSION ................................................................................................................................. D1.27 Removing the position sensor ...................................................................................................................................... D2.27 Removing the bracket................................................................................................................................................... D1.28 Removing the levers ..................................................................................................................................................... D1.29 REFITTING THE SUSPENSION .................................................................................................................................. D1.30 Refitting the levers ........................................................................................................................................................ D1.30 Refitting the support...................................................................................................................................................... D1.31 Refitting the position sensor ......................................................................................................................................... D1.32 Adjust the sensor .......................................................................................................................................................... D1.33 SHIMMING THE SUSPENSION................................................................................................................................... D1.33

Axion 850-810 – 11.2010 – GB

CROWN WHEEL AND PINION AND DIFFERENTIAL LOCAL MANUFACTURING TOOL............................................................................................................................... D1.34 EXPLODED VIEW OF THE BEVEL GEAR .................................................................................................................. D1.35 EXPLODED VIEW OF DIFFERENTIAL ....................................................................................................................... D1.36 PREPARATION ............................................................................................................................................................ D1.37 REMOVING THE CASING ........................................................................................................................................... D1.38 DIFFERENTIAL REMOVAL.......................................................................................................................................... D1.38 REMOVING THE DRIVE PINION................................................................................................................................. D1.39 REFITTING THE DRIVE PINION ................................................................................................................................. D1.40 Shimming the drive pinion ............................................................................................................................................ D1.40 DISMANTLING THE DIFFERENTIAL .......................................................................................................................... D1.43 INSTALLING THE DIFFERENTIAL .............................................................................................................................. D1.45 Shimming the differential .............................................................................................................................................. D1.46 REFITTING THE DIFFERENTIAL ................................................................................................................................ D1.47 REFITTING THE CASING............................................................................................................................................ D1.48

D2 – REINFORCED FRONT AXLES GENERAL REMOVING THE FRONT AXLE .................................................................................................................................... D2.2 REFITTING THE FRONT AXLE ..................................................................................................................................... D2.3

EPICYCLOID REDUCER EXPLODED VIEW OF THE EPICYCLIC REDUCER ..................................................................................................... D2.4 PREPARATION .............................................................................................................................................................. D2.5 REMOVING THE EPICYCLIC REDUCTION GEAR ...................................................................................................... D2.5 REFITTING THE EPICYCLIC REDUCTION GEAR ....................................................................................................... D2.8

JOINT UNIT EXPLODED VIEW ........................................................................................................................................................ D2.11 REMOVING THE JOINT BOX ...................................................................................................................................... D2.12 REFIT THE JOINT BOX ............................................................................................................................................... D2.16 SHIMMING THE THE JOINT HOUSING...................................................................................................................... D2.21

CROWN WHEEL AND PINION AND DIFFERENTIAL EXPLODED VIEW ........................................................................................................................................................ D2.22 REMOVING THE HOUSING ........................................................................................................................................ D2.24 DIFFERENTIAL REMOVAL.......................................................................................................................................... D2.25 REMOVING THE DRIVE PINION................................................................................................................................. D2.25 REFITTING AND SHIMMING THE DRIVE PINION ..................................................................................................... D2.27 DISMANTLING THE DIFFERENTIAL .......................................................................................................................... D2.30 Axion 850-810 – 11.2010 – GB

REFITTING AND SHIMMING THE DIFFERENTIAL .................................................................................................... D2.33 REFITTING THE DIFFERENTIAL ................................................................................................................................ D2.37 REFITTING THE HOUSING......................................................................................................................................... D2.38

D3 – 4 WD POWER TAKE-OFF HOUSING GENERAL....................................................................................................................................................................... D3.2 Declutched position ........................................................................................................................................................ D3.2 Clutched position ............................................................................................................................................................ D3.2 Lubrication ...................................................................................................................................................................... D3.2 CROSS-SECTION OF THE 4-WHEEL DRIVE HOUSING ............................................................................................. D3.3 CROSS-SECTION OF THE 4-WHEEL DRIVE HOUSING ............................................................................................. D3.4 EXPLODED VIEW OF THE 4-WHEEL DRIVE HOUSING ............................................................................................. D3.5 REMOVING THE 4-WHEEL DRIVE CLUTCH ............................................................................................................... D3.6 REMOVING THE CLUTCH ............................................................................................................................................ D3.7 REASSEMBLING THE CLUTCH.................................................................................................................................... D3.7 FITTING SHIMS TO THE CLUTCH "J1" ........................................................................................................................ D3.8 FITTING SHIMS TO THE SHAFT "J2" ........................................................................................................................... D3.9 REFITTING THE SHAFT.............................................................................................................................................. D3.10 COUPLING THE REAR AXLE/GEARBOX................................................................................................................... D3.11

LINK SHAFT REMOVING THE LINKING SHAFT.............................................................................................................................. D3.12 REMOVING THE JOURNAL CROSSES...................................................................................................................... D3.13 REFITTING THE JOURNAL CROSSES ...................................................................................................................... D3.13 REFITTING THE LINK SHAFT..................................................................................................................................... D3.14 CHECKING THE CONDITION OF THE LINK SHAFT ................................................................................................. D3.15

Axion 850-810 – 11.2010 – GB

Notes

Axion 850-810 – 11.2010 – GB

D1 NON REINFORCED FRONT AXLES

Axion 850-810 – 10.2010 – GB

General Specific torques and sealing products for the joint box 19 ± 1 daN·m (242)

0,7 mm

CLAAS Agrigrease EP2

CLAAS Agrigrease EP2

19 ± 1 daN·m (242)

Fig. 1

491hsm28

D1.2

Axion 850-810 – 10.2010 – GB

General Specific torque and sealing products for the suspension

0,5 mm CLAAS Agrigrease EP2

CLAAS Agrigrease EP2

(270) 19,2 ± 1 daN·m

0,5 mm

0,5 mm

(270) 19,2 ± 1 daN·m 0,5 mm

CLAAS Agrigrease EP2

2,5 ± 0,1 daN·m (242)

12,2 ± 0,6 daN·m (242)

51 ± 2,5 daN·m (242) Fig. 2

455hsm77

Axion 850-810 – 10.2010 – GB

D1.3

General Specific torque ad sealing products of the bevel gear

S1

46 ± 2 daN·m (270)

S

1

Fig. 3

455hsm78

Description 1 Torque: – Without the sealing ring 0,3 ± 0,1 daN·m – With the sealing ring 0,32 ± 0,1 daN·m

D1.4

S Drive pinion adjustment shim.

S1 Drive pinion adjustment shim.

Axion 850-810 – 10.2010 – GB

General Specific torque and sealing products of the differential

16,2 ± 0,7 daN·m

16,2 ± 0,7 daN·m

16,2 ± 0,7 daN·m (510)

6,5 ± 0,5 daN·m

22,5 ± 0,5 daN·m

22,5 ± 0,5 daN·m

46 ± 2 daN·m

(243) 3,8 ± 0,4 daN·m

Fig. 4

455hsm79

Axion 850-810 – 10.2010 – GB

D1.5

General Specific torque ad sealing products of the bevel gear

20 ± 0,4 daN·m 12 ± 1 daN·m

12 ± 1 daN·m Fig. 5

455hsm80

D1.6

Axion 850-810 – 10.2010 – GB

General Specific torque and sealing products of the epicyclical reducer

5 ± 0,2 daN·m

7,2 ± 0,4 daN·m

Fig. 6

455hsm81

Axion 850-810 – 10.2010 – GB

D1.7

General Removing the front axle Warning: The front axle must be raised on stands at the same time as the rear axle if the current operation requires the engine to be started up as the front axle remains engaged when stationary. There is therefore a risk of the tractor moving.

The tractor must be immobilised on flat, level ground (in the case of front lifting, raise the arms to maximum height).

– Apply the handbrake.

– Disconnect the battery.

– Chock the rear wheels.

– Shim the front axle to prevent it from swivelling.

– Remove the housing and drive shaft.

– Remove the front wheels.

– Chock the tractor under the crankcase with stands (shim it as high as possible to facilitate the axle's passage forward).

Fig. 7

455hsm84

– Remove the angular sensor bracket (3 screws).

– Disconnect the hose couplings from the steering cylinder.

– Disconnect the hydraulic unit hoses on the left side.

– Disconnect the harnesses of the hydraulic unit solenoid valves on the left side.

– Remove the closing panel in the hood nose.

– Remove the radiator nozzle and the fan by loosening the central nut (Left-hand thread).

A

– Position an appropriate device.

– Set into tension.

– Remove the 8 screws (A) of the bearings.

– Remove the front axle.

When changing the axle, check the oil levels.

Fig. 8

455hsm82

According to the intervention on the front axle: drain the axle when removing.

A

455hsm83

D1.8

Axion 850-810 – 10.2010 – GB

Fig. 9

General Refitting the front axle – Sling the front axle using an appropriate means.

– Place the front axle as to engage the fastening screws (A).

– Pre-tighten the fastening screws (A) on the front axle at 13 daN·m, then tighten to 30 daN·m.

– Refit the parts removed previously.

– Connect the hoses and the electric cables.

– Refit the wheels.

– Remove the props.

– Top up the levels.

455hsm85

Axion 850-810 – 10.2010 – GB

Fig. 10

D1.9

Epicycloid reducer Exploded view of the epicyclic reducer 19 18

16 15 7 6 5 6 4 17

14 13 12

11 3

2 1

455hsm61

Fig. 11

Description 1

Plug.

7

2

Seal.

11 Screw.

17 Wheel holder hub.

3

Screw.

12 Crown wheel.

18 Tapered roller bearing.

4

Planet carrier.

13 Ring gear carrier.

19 Seal.

5

Planet gear.

14 Locking ring.

6

Tapered roller bearing.

15 Tapered roller bearing.

Circlip.

16 O-ring.

Preparation Warning: The front axle must be raised on stands at the same time as the rear axle if the current operation requires the engine to be started up as the front axle remains engaged when stationary. There is therefore a risk of the tractor moving.

The tractor must be immobilised on flat, level ground.

– Apply the handbrake.

– Chock the rear wheels.

– Disconnect the battery.

– Place the tractor on stands.

– Remove the front wheels.

D1.10

Axion 850-810 – 10.2010 – GB

Epicycloid reducer Removing the epicyclic reducer Warning: Perform all the operations below on the 2 front axle reducers.

– Remove the oil plug (A).

– Drain the sump.

– Remove the fastening screws (B) of the planet holder (C).

– Remove the planet carrier.

C

B

A

Fig. 12

455hsm62

– Remove the circlip (D).

– Use a puller to pull the planets (E).

– Pull the tapered roller bearings.

D

E Fig. 13

455hsm63

– Remove the O-ring (F).

– Loosen and remove the fastening screws (G) of the crown gear holder.

F

G

455hsm64

Axion 850-810 – 10.2010 – GB

Fig. 14

D1.11

Epicycloid reducer – Remove the crown gear holder using two M8 (H) screws.

H Fig. 15

455hsm65

– Remove the retainer ring of the crown gear holder to release the crown gear.

– Remove the wheel holder hub (I) using a puller.

I

Fig. 16

455hsm66

– Remove the ring seal (J).

– Remove the outer cages of the two tapered roller bearings.

J

455hsm67

D1.12

Axion 850-810 – 10.2010 – GB

Fig. 17

Epicycloid reducer Refitting the epicyclic reducer Warning: Perform all the operations below on the 2 front axle reducers.

– Push the outer cages fully using tool n°60 0500 656 8.

– Start with a wrench to center the outer cages, then finish with a press.

– Place the bearing (inside the wheel holder hub).

– Place the sealing bush (B) in its housing using tool n°60 0500 656 8 (place the centrer and cover to engage at the right dimension).

– Start with a wrench to center the sealing bush, then finish with a press.

Beware the fitting direction of the bush ! Ensure the 9 ± 0,1 mm size is applied. Check the sealing bush is uniform.

Fig. 18

455hsm72

– Fit the wheel holder hub against the joint.

– Fit the bearing fully pushed.

– Assemble the crown gear (C), retainer ring (D), and crown gear holder (E).

– Fit the assembly fully pushed against the wheel holder hub.

B

– Smear the fastening screws with Loctite (242).

– Cross-tighten at 7,2 ± 0,4 daN·m.

Fig. 19

455hsm68

D

C

E

455hsm69

Axion 850-810 – 10.2010 – GB

Fig. 20

D1.13

Epicycloid reducer – Fit the lower tapered roller bearings using tool n°60 0500 665 1.

Caution ! The lower tapered roller bearings have a rounding on the level of the bore.

– Engage the stallites (F) with the overthickness turned upwards.

– Engage the upper tapered roller bearings.

– Place the machined side of the retainer rings towards the bearings.

F

Fig. 21

455hsm70

– Replace the O-rings.

– Engage the planet holder into the crown gear holder.

– Place 2 screws (G) in the holes available.

– Tighten gradually while the planet holder engages in the crown gear holder.

G

– Swivel the assembly while pushing on the planet holder.

– Remove the 2 screws, place those planned.

– Tighten to 5 ± 2 daN·m.

455hsm71

– Top up the oil.

– Quantity: 2 litres per side.

– Screw the oil plugs at 9 daN·m.

D1.14

Axion 850-810 – 10.2010 – GB

Fig. 22

Joint unit Exploded view

19 16 15 13 12 1

11

55 2

6

3

7

8

9

10

23

14

25 26

12 13 16 19 Fig. 23

455hsm19

Description 1 Sleeve.

10 Circlip.

19 Screw.

2 Plain bush.

11 Bearing.

23 Steering nuckle pivot.

3 Seal.

12 Spacer.

25 Screw.

6 Plain bush.

13 Plain bush.

26 Nut.

7 Circlip.

14 Bearing.

55 Wheel shaft.

8 Bearing.

15 Shim.

9 Washer.

16 Joint bracket.

Preparation to removing the joint box Warning: The front axle must be raised on stands at the same time as the rear axle if the current operation requires the engine to be started up as the front axle remains engaged when stationary. There is therefore a risk of the tractor moving.

The tractor must be immobilised on flat, level ground.

– Apply the handbrake.

– Chock the rear wheels.

– Disconnect the battery.

– Place the tractor on stands.

– Remove the front wheels.

Axion 850-810 – 10.2010 – GB

D1.15

Joint unit Removing the joint box – Remove the safety pin (A) in the steering bars, then nut (B).

C

– Pull the ball socket (C) out of the joint using a socket puller.

B A 455hsm86

Fig. 24

451hsm08

Fig. 25

– Fit the shackles in the holes available (D).

– Remove the joint supports.

D

– Remove the gearshift towers.

Note: The wheel shaft comes with it.

455hsm87

D1.16

Axion 850-810 – 10.2010 – GB

Fig. 26

Joint unit Dismantling A

B

On the joint supports: – Remove the bearings.

– Remove the sealing bushes.

On the joint box: – Remove the planet holder cover and the crown gear holder.

– Remove the retaining ring (A).

– Remove the washer (B).

– Pull the the wheel shaft.

455hsm20

Fig. 27

– Pull the sealing bush (C) using an internal puller.

– Remove the elastic bush.

– Extract the bearing (D).

C D

455hsm21

Axion 850-810 – 10.2010 – GB

Fig. 28

D1.17

Joint unit On the axle cover: – Pull the outer cages of the bearings using an internal uller.

– Pull the sealing bush (E).

– Pull the smooth bush (F).

Beware the installation direction !

E F

455hsm22

Fig. 29

455hsm23

Fig. 30

Refitting On the axle cover: – Lubricate the smooth bush (G) and its housing.

– Insert it using tool n°60 0500 656 4.

G

455hsm24

D1.18

Axion 850-810 – 10.2010 – GB

Fig. 31

Joint unit – Lubricate and fit onto tool n°60 0500 656 4 the sealing bush (H), then insert it into its housing.

Beware the installation direction !

H

455hsm25

Fig. 32

455hsm93

Fig. 33

– Lubricate and fit the external cages of the bearings with tool n° 77 0138 854 7, check that they are fully pushed.

On the casing : – Lubricate and fit the bearing (I) in its housing.

– Fit the circlip.

I

455hsm26

Axion 850-810 – 10.2010 – GB

Fig. 34

D1.19

Joint unit – Lubricate the external surface of the sealing bush (J).

– Fit it in its housing.

J

455hsm27

Fig. 35

455hsm28

Fig. 36

– Lubricate the tip of the wheel shaft.

– Fit the shaft in the joint box.

– Fit the washer (K), then the retainer ring (L).

– Refit the crown gear holder.

– Tighten at 7,2 ± 0,4 daN·m.

K

– Refit the cover.

– Tighten to 5 ± 0,2 daN·m.

L 455hsm29

D1.20

Axion 850-810 – 10.2010 – GB

Fig. 37

Joint unit Refit the joint box – Sling the joint box.

– Grease the sealing bush before engaging the shaft in the tube.

– Refit the joint box onto the tube.

Fig. 38

455hsm88

– Grease the housing of the lower joint support (G).

– Lubricate and fit the sealing bush and the bearing on the support.

Beware the fitting direction of the sealing bush !

– Fit the lower joint support in its housing.

– Coat the screws with Loctite (242).

– Tighten to 19,2 ± 1 daN·m.

G

455hsm89

Fig. 39

– Grease the housing of the upper joint support (H).

– Lubricate and fit the sealing bush and the bearing on the support.

Beware the fitting direction of the sealing bush !

H

455hsm90

Axion 850-810 – 10.2010 – GB

Fig. 40

D1.21

Joint unit Ensure you properly center the sensor (I) in the axis (J) fitted in the upper left joint support under the cover (K).

– Implement the shimming.

– Grease the support.

– Coat the screws with Loctite (242).

K

– Tighten at 19,2 ± 1 daN·m.

– Fit the steering bar knuckle.

J

– Tighten at 18 ± 1 daN·m.

– Fit a new safety pin.

– Fit the planet holder cover onto the wheel holder hub.

– Tighten at 5 ± 0,2 daN·m.

Note: You can fit the sensor finger at the end.

– Connect the battery.

– Refit the wheels.

Fig. 41

455hsm91

– Remove the props.

– Calibrate the steering sensor "B117" (See Métadiag© 2007 manual).

I

J

455hsm92

D1.22

Axion 850-810 – 10.2010 – GB

Fig. 42

Joint unit N.B.: The evolution of the steering sensor modifies the kinematics. The new assembly does not change the shimming of the joint box.

Fig. 43

455hsm97

Description 1 New pivot holder.

3 Cam.

5 Screw.

2 Pin.

4 Washer.

6 Cover.

Axion 850-810 – 10.2010 – GB

D1.23

Joint unit Adjustment – Prepare a 2mm shim "S1" and fit them onto the upper joint support.

S2

– Fit and tighten the joint support.

– Check clearance "S2" obtained with the 2mm shim.

Calculating the thickness of the final shim (S) is performed as follows.

S1 being the thickness of the first shim (2 mm).

S2 being the clearance found with the 2mm shim.

S3 being the 0,7mm preload.

S = S1 – S2 – S3

S1 10

– Remove the joint support.

– Place the thickness shim stack (S) instead of the 2mm shim.

Example for a "S2" clearance of 0,36

Fig. 44

455hsm31

S = S1 – S2 – S3 S = 2 – 0,36 – 0,7 S = 0,94

10 S

455hsm30

D1.24

Axion 850-810 – 10.2010 – GB

Fig. 45

1

22

46

29

26

24

30

23

43

25

44

41

18

28

27

9

16

2

15

21

19

20

49

37 7

10

8

6

455hsm00

Axion 850-810 – 10.2010 – GB

48

23

34

38

33

5

23

25

25

24

31

32

24

22

4

41

45

15

48 22

16

41 45

35

11

40

36

39

17

12

34

13

17

42

47

14

3

33

9

Suspension

Exploded view of the suspension

Fig. 46

D1.25

Suspension Description 1

Casing.

19 Fork end.

36 Lower arm axis/Bracket.

2

Support axis.

20 Screw.

37 Support axis clamping screw.

3

Reducer.

21 Washer.

38 Nut.

4

Bracket.

22 Joint bracket.

39 Pin.

5

Upper lever.

23 Tapered roller bearing.

40 Plug.

6

Lower lever.

24 Seal.

41 Screw.

7

Plain bush.

25 Flange.

42 Screw.

8

Washer.

26 Position sensor axis.

43 Sensor mounting screw.

9

Grease nipple.

27 Joint bracket.

44 Protector fastening screw.

10 Cylinder.

28 Cam.

45 Screw.

11 Upper arm axis/Bracket.

29 Sensor protection casing.

46 O-ring.

12 Ball joint.

30 Position sensor.

47 Shim.

13 Seal.

48 Shim.

14 Circlip.

31 Clamping screw of the position sensor axis.

15 Safety shim.

32 Nut.

16 Screw.

33 Lower arm cover.

17 O-ring.

34 Tapered roller bearing.

18 Jack/yoke axis.

35 O-ring.

D1.26

Axion 850-810 – 10.2010 – GB

49 Washer.

Suspension Removing the suspension – Remove the front axle. See chapter D1 – "General".

Removing the position sensor

A

– Remove the protection cover (A), then the position sensor (B).

B

Fig. 47

455hsm01

– Remove the cam (C).

– Release the sensor axis (D) by loosening (E), then the screw (F).

– Extract the sensor axis using a screw.

D C

Fig. 48

455hsm02

E

F D

455hsm03

Axion 850-810 – 10.2010 – GB

Fig. 49

D1.27

Suspension Removing the bracket – Disconnect the jack by removing the screw (G) clamping the support axis (H).

G

– Pull the support axis, sealing bushes (I), and washers (J).

H

I J

Fig. 50

455hsm04

– Remove the reducer and greaser (K) of the upper arm axis / support (L).

– Remove the safety shim (M).

– Sling the support to relieve the assembly when pulling the axis.

M

L

K

455hsm05

Fig. 51

455hsm94

Fig. 52

– Use the puller n°00 1136 086 0 to pull the axis.

D1.28

Axion 850-810 – 10.2010 – GB

Suspension

O N

Fig. 53

455hsm06

Fig. 54

455hsm07

– Loosen the cover screws without damaging the shims.

– Release the lower arm axis/support (N) by loosening the plug and removing the pin (O) with an M6 screw.

– Remove the axis.

P

Q

– Remove the support.

Removing the levers – Sling the upper lever and tighten the sling slightly.

– Remove the upper joint supports.

Beware the shims !

– Remove the upper lever. Apply the same method for the lower lever.

– Remove the flanges (P), bearings (Q), and outer cages of the levers using an extractor.

– Remove the sealing bush (R), the stop ring (S), then the joint (T) of the upper lever.

Fig. 55

455hsm08

– Sling the jack.

– Remove the safety cable,then pull the axis.

– Remove the actuator.

T S R

455hsm09

Axion 850-810 – 10.2010 – GB

Fig. 56

D1.29

Suspension Refitting the suspension Refitting the levers – Present the jack on the yoke, then engage the axis.

– Place the axis safety shim and smear the screws with Loctite (242), tightzn at 25 ± 1,2 daN·m – On the lower lever, engage the outer bearing cages using tool n°00 1131 500 0.

– Grease the tapered roller bearings, fit them in their housing, then close with the flasks (A).

– Sling the lower lever and place it oposite the holes in the joint brackets.

– In the holes, place the sealing bushes (B), then grease the jointing brackets before enaging them.

A

Beware the direction of the sealing bush !

– Shim the lower lever/frame.

Fig. 57

455hsm10

Caution ! The shims are always on the right side.

– Engage the supports with the shims prepared previously.

– Smear the screws with Loctite (242) and tighten the supports at 19 ± 1 daN·m

B 455hsm11

Fig. 58

455hsm74

Fig. 59

– Proceed identically for the upper lever.

– Engage the joint using tool n°60 0500 657 6.

– Place the retainer ring.

– Place the sealed bush.

D1.30

Axion 850-810 – 10.2010 – GB

Suspension Refitting the support – Sling the support (C).

– CHeck the condition of the O-rings.

– Present the support (C) aligned with the holes in the lower lever.

– Engage the axis while aligning the pin housing with the hole in the support (C).

– Grease the bearings and their housings.

C

– Engage the bearings on the axis, then fit the outer cages using tool n°00 1131 512 0.

– Fit the pin and tighten the (D) plug.

– Shim the lower lever/support.

Caution ! The shims are always on the right side.

– Grease and fit the covers while applying Loctite (510) on their circumference.

Fig. 60

455hsm12

– Coat the screws with Loctite (242).

– Tighten to 12,2 ± 0,6 daN·m.

– Present the support (C) aligned with the holes in the lower lever.

D

Fig. 61

455hsm13

– Relieve the assembly then engage the axis of the upper arm/support (E).

– Place the axis' safety shim (F), smear the fastening screws with Loctite (242), and tighten at 25 ± 1 daN·m – Fit the greaser (G).

F 455hsm14

Axion 850-810 – 10.2010 – GB

E

G Fig. 62

D1.31

Suspension – Grease the support axis (H).

– Fit the sealing ring (I) and washer (J) between the jack and support.

– Connect the jack with the support (C) by engagng the support axis (H).

Beware the axis assembly direction (H) !

H

– Fit the other smooth bush and other washer.

I

– Clamp the support axis with the screw.

– Tighten to 25 ± 1 daN·m.

J

– Refit the front axle (See chapter D1 – "General").

I

Fig. 63

455hsm15

Refitting the position sensor – On the upper lever, grease the axis of the axle's position sensor.

– CHeck the condition of the O-rings.

– Insert the axis while turning the drill hole as to clamp it with the headless screw (K).

K

– Clamp the axis by tightening the screw and clamping the assembly using the nut (L).

L

– Fit the cam (M) then the sensor.

– Pretighten the fastening screws.

Fig. 64

455hsm16

M

455hsm73

D1.32

Axion 850-810 – 10.2010 – GB

Fig. 65

Suspension Adjust the sensor – Connect the multimeter n°00 1135 095 0 in derivation with the harness n°60 0500 573 4.

– Adjust the sensor's position to find the values matching the bridge's position.

– Start the tractor.

– Tighten to 0,25 ± 0,05 daN·m.

– Measure the sensor's voltage between the lower and mediam positions.

– Fit the protection cover and tighten at 10 ± 0,5 daN·m.

Axle position

Value of pin 1-3 (volt)

Low position

1

High position

2,3

Shimming the suspension This procedure is valid for the 3 shimmings to be performed on the levers.

B

These shimmings are: – Lower lever (A)/Frame (B).

– Upper lever/Frame.

– Lower lever (A)/Lever holder (C).

A

Caution ! The shims are always on the right side.

– Fit a first 2,5 mm shim before engaging the joint supports or covers in order to obtain a clearance.

– Tighten.

– Check the clearance between the frame (fixed part) and the lever (mobile part) using a comparator fitted with a magnetic base.

Final shim calculation (S):

Fig. 66

455hsm17

S = (First shim – Clearance found) – Preload Value of the first shim: 2,5 Preload value: 0,5 for all shimmings.

C

– Prepare the shim stacking.

– Pull out the joint holder or covers and fit the thickness shims (S).

Example for a 0,46 found clearance

A

S = 2,5 – 0,46 – 0,5

S

S = 1,54

455hsm18

Axion 850-810 – 10.2010 – GB

Fig. 67

D1.33

Crown wheel and pinion and differential

A

Local manufacturing tool

B

55

B

C

183 10

ø 12

45

10

95 40

27

C

ø 12

255

ø9

A

143 275

46

70

25 230

Fig. 68

455hsm32

D1.34

Axion 850-810 – 10.2010 – GB

Crown wheel and pinion and differential Exploded view of the bevel gear

1

2 3 4 6 8 13

10

12

11 5 7 9

Fig. 69

455hsm33

Description 1

Crown wheel and pinion.

6

Spacer.

11 Nut.

2

Tapered roller bearing.

7

Seal.

12 Bevel gear cover.

13 Locating pin.

3

Adjustment shim "S".

8

O-ring.

4

Adjustment shim "S1".

9

Flange.

5

Tapered roller bearing.

10 Washer.

Axion 850-810 – 10.2010 – GB

D1.35

Crown wheel and pinion and differential Exploded view of differential

17 22 13

20 14

21 19 18

16

14 13 12 11 15

3

10

2

9

1

8 7 6 5 4

Fig. 70

455hsm34

Description 1

O-ring.

9

2

O-ring.

10 Disc.

18 Bearing.

3

Piston.

11 Shim.

19 Nut.

4

Locating pin.

12 Bearing.

20 Pinion.

5

Bearing.

13 Casing.

21 Locking tab.

6

Washer.

14 Washer.

22 Screw

7

Flange.

15 Washer.

8

Locking ring.

16 Pin.

D1.36

Locking ring.

Axion 850-810 – 10.2010 – GB

17 Screw.

Crown wheel and pinion and differential Preparation

A

Warning: The front axle must be raised on stands at the same time as the rear axle if the current operation requires the engine to be started up as the front axle remains engaged when stationary. There is therefore a risk of the tractor moving.

The tractor must be immobilised on flat, level ground.

B

– Apply the handbrake.

– Chock the rear wheels.

– Set the axle to the high position.

– Disconnect the battery.

– Shim the front axle to prevent it from swivelling.

– Shim the axle with wooden blocks (A) under the chassis to maintain the front axle in the high position.

– Support the tractor under the body of the front axle using axle stands.

D 455hsm75

C Fig. 71

– Remove the front wheels.

– Remove the housing and drive shaft.

– Disconnect the hoses of the hydraulic unit (B) and the solenoid valve harnesses.

– Remove the accumulator (C) and its bracket.

– Remove the 2 screws (D) from the hydraulic unit and move it to the left.

– Drain the front axle jack and case.

– Remove the steering actuator.

Axion 850-810 – 10.2010 – GB

D1.37

Crown wheel and pinion and differential Removing the casing – Remove the gearshift towers.

– Remove the sump screws.

– Loosen partially the nuts of the 2 studs located on the lower part.

– Separate the casing using a lever.

– Place a roller support fitted with the local manufacturing tool on the flange (Refer to section: Crown wheel and pinion and differential – Local manufacturing tool).

– Remove the last 2 and pull the casing.

Fig. 72

455hsm35

Differential removal – Remove the pawl.

A

B

– Loosen the nut (A) using tool N° 00 1136 021 0.

– Loosen the fastening screws on the bracket (B) and pull it.

Fig. 73

455hsm36

– Sling the differential assembly using one of the crown screws (C).

– Remove the differential assembly.

C

455hsm37

D1.38

Axion 850-810 – 10.2010 – GB

Fig. 74

Crown wheel and pinion and differential

C

B A Fig. 75

455hsm49

Fig. 76

455hsm50

Removing the drive pinion

D

– Release the nut (A).

– Loosen the nut (A) using tool N° 00 1136 020 0.

– Pull the washer (B) and the flange (C).

E

– Remove the sealing bush (D), spacer (E), and O-ring.

– Pull the shaft out of the casing using a plastic mallet.

Beware the adjusting shim located behind the bearing.

– Using an appropriate puller, remove the external cages of the tapered roller bearings.

Beware the adjustment shims on the inside face.

– With a press, remove the tapered roller bearings (F) remaining on the shaft.

Fig. 77

455hsm51

F

455hsm52

Axion 850-810 – 10.2010 – GB

Fig. 78

D1.39

Crown wheel and pinion and differential Refitting the drive pinion – With the press, engage the inner tapered roller bearing onto the axle.

Shimming the drive pinion – When replacing the tapered roller bearing, compare the value (I) present on the piion.

I

This value will be used to calculate the value "D", i.e. the thickness to add or subtract to previous shims.

D = [(I) of the previous pinion] – [(I) of the new pinion] Example Value (I) of the previous pinion: 0,05.

Value (I) of the new pinion: – 0,1.

D = (0,05) – (– 0,1) D = 0,15 Fig. 79

455hsm57

Note: (D) can be positive or negative.

Once the "D" value calculated, measure the old shims "S" and "S1".

If "D" is positive: add the value "D" to the shim "S" and "S1".

If "D" is negative: subtract the "D" value to the "S" and "S1" shim.

I

455hsm58

Fig. 80

S S1

0,3 ± 0,1 daN·m 0,32 ± 0,1 daN·m

1

Fig. 81

455hsm76

D1.40

Axion 850-810 – 10.2010 – GB

Crown wheel and pinion and differential Description 1

Torque: – Without the sealing ring 0,3 ± 0,1 daN·m – With the sealing ring 0,32 ± 0,1 daN·m

– Place the stack of "S" shims calculated previously (A), with the thickest shim turned to the bottom.

– Place the external cage (B) of the inner tapered roller bearing using tool n°00 1136 124 0.

– Place the external cage of the outer tapered roller bearing using tool n°60 0500 657 9.

A

B Fig. 82

455hsm53

– Heat the outer tapered roller bearing at 280 °C. – Place the shaft (C) in its housing.

– Place the shim "S1", then fully insert the inner tapered roller bearing (D).

– Refit the greased O-ring, the sealed ring, then the flange.

C

D Fig. 83

455hsm54

– Fit the washer, smear the nut with Loctite (270), then tighten the nut at 46 ± 2 daN·m using tool n° 00 1136 020 0 (E).

After tightening, compact the bearings with a copper hammer.

E

455hsm55

Axion 850-810 – 10.2010 – GB

Fig. 84

D1.41

Crown wheel and pinion and differential – Check the pinion's torque using a dial gauge fitted with tool n°00 1136 020 0. The value must be 0,32 ± 0,1 daN·m.

Caution ! If torque exceeds the maximum value, the "S1" shim must be increased.

Caution ! If torque does not reach the minimum value, the "S1" shim must be reduced.

– Flange the nut by distorting the flange.

455hsm56

D1.42

Axion 850-810 – 10.2010 – GB

Fig. 85

Crown wheel and pinion and differential Dismantling the differential Once the differential assembly removed.

– Extract the bearings.

Note: When changing the bevel gear, you do not need to separate the casings and remove the piston.

A

– Loosen the screws (A) to separate the two casings.

– Loosen the screws fastening the crown gear (B), then pull it.

B

Fig. 86

455hsm38

– Separate the casings from the differential assembly to access to the pinions (C), then pull them.

C

Fig. 87

455hsm39

– Remove the retainer ring (D) then pull the stack of discs (E).

D 455hsm40

Axion 850-810 – 10.2010 – GB

E Fig. 88

D1.43

Crown wheel and pinion and differential

G

H

F

Fig. 89

455hsm41

– Pull the outer cage from the bearing (F) piston side.

Fig. 90

455hsm42

I

Beware the adjustment shims (G).

– Remove the retainer ring (H) to gain access to the piston.

– Pull out the piston (I) and disassemble it with a press.

Fig. 91

455hsm43

I

455hsm44

D1.44

Axion 850-810 – 10.2010 – GB

Fig. 92

Crown wheel and pinion and differential Installing the differential – Refit the O-rings (A) into the casing, piston side.

– Assemble the piston with the press, then refit it in its housing.

– Clamp with the retainer ring.

A

B

Fig. 93

455hsm45

Note: to facilitate refitting with the centering pin (B), make a mark (C) on the piston and casing.

– Assemble the differential assembly.

– Use "CLAAS Agrigrease EP2" to grease the pinion rods and washers.

C

Fig. 94

455hsm46

– Assemble the casings by matching the marks (R).

– Smear the screws with Loctite (270) and tighten at 12 ± 1 daN·m.

R

455hsm95

Axion 850-810 – 10.2010 – GB

Fig. 95

D1.45

Crown wheel and pinion and differential – Refit the disks while aligning the holes of the larger diameters (D). The first and last discs are in steel.

– Clamp the assembly using the retainer ring.

– Place the crown gear on the differential casing, then smear the screws with Loctite (270) and tighten at 12 ± 1 daN·m.

– Heat the bearings, then refit them.

D

– On the piston side, when not replacing the tapered roller bearing, refit the original adjustment shims, then the outer bearing cage.

– When replacing the tapered roller bearing, refit with a 1,5 mm shim.

455hsm47

Fig. 96

455hsm48

Fig. 97

Shimming the differential – Refit the differential assembly.

– Pretighten the bracket screw and the nut.

– Check clearance between the teeth of the crown gear and tapered pinion.

There must be between 0,18 and 0,23 mm of play.

– Adjust the 1,5 mm shim located behind the bearing on the piston side according to the clearance found.

If clearance between the teeth is too high, reduce the adjustment shim, and conversely.

– Refit the differential assembly.

– Check the torque with a dial wrench fitted with tool n°00 1136 020 0. The value must be 0,42 ± 0,1 daN·m.

D1.46

Axion 850-810 – 10.2010 – GB

Crown wheel and pinion and differential Refitting the differential – Sling the differential assembly using one of the crown screws .

– Place the assembly in its housing.

Fig. 98

455hsm59

– Refit the retainer with the screws (A).

– Refit the nut (B) using tool n° 00 1136 021 0 then the retainer (C).

If shimming has not been performed, pre-tightening is enough.

Note: If shimming has been performed, tighten the screws fastening the bracket (A) at 16 ± 1 daN·m, and the nut (B).

A

Ensure you check the torque, which must be included between 0,42 ± 0,1 daN·m.

If not, increase or reduce tightening of the nut (B) to be within tolerance.

Note: as an indication, the nut (B) must be tightened at about 4 daN·m.

– Clamp using the retainer (C) at 2 ± 0,5 daN·m.

B 455hsm60

Axion 850-810 – 10.2010 – GB

C Fig. 99

D1.47

Crown wheel and pinion and differential Refitting the casing – Place the casing on its bracket.

– Smear the circumference of the casing with Loctite (510).

Ensure the fastening holes are properly circled !

– Place the casing in its housing.

– Smear the fastening screws with Loctite (242) and tighten at 22,5 ± 0,5 daN·m.

– Studs must be tightened at 13 ± 0,5 daN·m.

– Refit the gearshift tower.

– Fit all items removed previously.

455hsm35

D1.48

Axion 850-810 – 10.2010 – GB

Fig. 100

D2 REINFORCED FRONT AXLES

Axion 850-810 – 10.2010 – GB

General Removing the front axle Warning: The front axle must be raised on stands at the same time as the rear axle if the current operation requires the engine to be started up as the front axle remains engaged when stationary. There is therefore a risk of the tractor moving.

The tractor must be immobilised on flat, level ground.

– Apply the handbrake.

– Disconnect the battery.

– Chock the rear wheels.

A

– Shim the front axle to prevent it from swivelling.

– Remove the casing.

– Remove the transmission shaft.

– Remove the front wheels.

– Chock the tractor under the crankcase with stands (shim it as high as possible to facilitate the axle's passage forward).

Fig. 1

455hsm82

– Disconnect the steering sensor.

– Disconnect the hose couplings from the steering cylinder.

A

– Remove the closing panel in the hood nose.

– Remove the radiator nozzle and the fan by loosening the central nut (Left-hand thread).

– Position an appropriate device.

– Remove the screws (A).

– Remove the front axle.

When changing the axle, check the oil levels.

According to the intervention on the front axle: drain the axle when removing.

455hsm82

D2.2

Axion 850-810 – 10.2010 – GB

Fig. 2

General Refitting the front axle – Sling the front axle using an appropriate means.

– Place the front axle as to engage the fastening screws (A).

A

– Pretighten the fastening screws (A) of the front axle at 13 daN.m.

– Tighten to 40 + 5°.

– Refit the parts removed previously.

– Connect the hoses and the electric cables.

– Refit the wheels.

– Remove the props.

– Top up the oil levels.

455hsm83

Axion 850-810 – 10.2010 – GB

Fig. 3

D2.3

Epicycloid reducer Exploded view

17 16 15 14 13

5 6 7 8 4

12 11 10 9 3 2 1 Fig. 4

455hsm61

Description 1

Plug.

7

Planet gear.

13 O-ring.

2

Seal.

8

Tapered roller bearing.

14 Outer conical bearing.

3

Screw.

9

Screw.

15 Hub.

4

Cover.

10 Crown wheel.

16 Inner conical bearing.

5

Circlip.

11 Ring gear carrier.

17 Seal.

6

Tapered roller bearing.

12 Locking ring.

D2.4

Axion 850-810 – 10.2010 – GB

Epicycloid reducer Preparation Warning: The front axle must be raised on stands at the same time as the rear axle if the current operation requires the engine to be started up as the front axle remains engaged when stationary. There is therefore a risk of the tractor moving.

The tractor must be immobilised on flat, level ground.

– Apply the handbrake.

– Chock the rear wheels.

– Disconnect the battery.

– Place the tractor on stands.

– Remove the front wheels.

Removing the epicyclic reduction gear Note: Perform all the operations below on the 2 front axle reducers.

– Remove the oil plug (1).

– Drain the planet holder (2).

– Remove the fastening screws (3) of the planet holder (2).

2

– Use an appropriate lifting means.

– Remove the planet carrier.

3

1

Fig. 5

455hsm99

– Remove the circlip (1).

– Pull out the planets (2).

1

– Extract the conical bearings (3).

3 2

455hsm63

Axion 850-810 – 10.2010 – GB

Fig. 6

D2.5

Epicycloid reducer – Remove the O-ring (1).

– Loosen and remove the fastening screws (2) of the crown holder (3).

2

1

3

Fig. 7

455hsm0b

– Use 2 M8 screws.

– Remove the crown holder (2).

Important: Note the orientation of the crown holder upon removal.

M8

1 Fig. 8

455hsm0c

– Remove the retaining ring (1) from the crown holder (2) to separate it from the crown (3).

1

2

3

455hsm0d

D2.6

Axion 850-810 – 10.2010 – GB

Fig. 9

Epicycloid reducer – Use a puller.

– Pull the hub (1).

– Recover the outer conical bearing (2).

1

2 Fig. 10

455hsm0e

– Remove the 2 bearing housings (1) from the hub (2).

– Use a puller.

1

2 Fig. 11

455hsm0f

– Remove the inner conical bearing (3).

3

455hsm0g

Axion 850-810 – 10.2010 – GB

Fig. 12

D2.7

Epicycloid reducer – Remove the ring seal (1).

Important: Protect tne span of the inner conical bearing to avoid damaging it.

1

Fig. 13

455hsm0h

Refitting the epicyclic reduction gear Note: Perform all the operations below on the 2 front axle reducers.

– Use tool n° 00 1142 075 0.

– Fit the sealing ring (1) onto the joint housing (2).

Warning: Respect the direction of assembly of the ring.

2

1

Fig. 14

455hsm0i

2

00 1142 075 0

455hsm0j

D2.8

Axion 850-810 – 10.2010 – GB

Fig. 15

Epicycloid reducer – Fit the inner conical bearing (1) against the joint housing (2).

– Use a press and an appropriate tool.

2

– Fit the 2 bearing housings (3) in the hub (4).

4

3

3 1

Fig. 16

455hsm0k

– Use an appropriate lifting means.

– Place the hub (1).

– Fit the external conical bearing (2).

1

2 Fig. 17

455hsm0l

– Fit the crown (1) onto the crown holder (2).

– Place the retaining ring (3) to fasten the assembly.

3 2

1

455hsm0m

Axion 850-810 – 10.2010 – GB

Fig. 18

D2.9

Epicycloid reducer – Fit the assembly to the hub (4).

Important: Align the mark on the crown with that on the joint housing.

4 5

– Smear the screws (5) with Loctite (243).

– Tighten the screws to a torque of 12,2 ± 0,6 daN·m.

Fig. 19

455hsm0n

– Fit the conical bearings (1) and gears (2) in the cover (3).

1

– Flange the gears with the arrester rings (4).

3 4

2 Fig. 20

455hsm0o

– Change and grease the O-ring (1).

– Use an appropriate lifting means.

– Fit the cover (2).

– Tighten the screws (3) to a torque of 7 daN·m.

2

3

1

– Check the oil level.

– Tighten the cap (4) at a torque of 9 daN·m.

4

455hsm0p

D2.10

Axion 850-810 – 10.2010 – GB

Fig. 21

Joint unit Exploded view

10 12

11

14

13

15

16 32 17

18

31 30 29

19

20

22

21 35

23 28 34

3

33

2 27

1 26 25

35

4 24 5 6 7 8

9 Fig. 22

455hsm0q

Description 1 Circlip.

13 Pin.

25 Nut.

2 Spacer.

14 O-ring.

26 Nut.

3 Joint unit.

15 Screw.

27 Screw.

4 Tapered roller bearing.

16 Upper joint holder.

28 Steering tie-rod.

5 Seal.

17 Shim.

29 Bearing.

6 Lower joint holder.

18 Tapered roller bearing.

30 Circlip.

7 Cover.

19 Seal.

31 Seal.

8 Screw.

20 Washer.

32 Universal shaft.

9 Grease nipple.

21 O-ring.

33 Seal.

10 Cover.

22 Screw.

34 Plain bush.

11 Blanking plate.

23 Sensor.

35 Friction ring.

12 Screw.

24 Pin.

Axion 850-810 – 10.2010 – GB

D2.11

Joint unit Removing the joint box 1 – Remove the epicylic reduction gear. Refer to section: Removing the epicyclic reduction gear.

– Measure the dimension "A" if removing the steering stop screws (1) is necessary.

A Fig. 23

455hsm0r

– Remove the pin (1) from the steering rod (2).

Note: Always change the pin.

3

– Remove the nut (3) from the tie rod.

1

2

– Use a puller to remove the tie rod from its housing.

Fig. 24

455hsm0s

– Use an appropriate means to sling the joint housing (1).

– Loosen the screws (2).

1

3 2

455hsm0t

D2.12

Axion 850-810 – 10.2010 – GB

Fig. 25

Joint unit – Remove the upper joint holder (3) fitted with the shims (4), sealing ring (5) and bearing (6).

3

5

4

6 Fig. 26

455hsm0u

– Loosen the screws (1).

– Remove the cover (2).

– Remove the drive rod (3) of the steering sensor "B117" fitted with its 2 bushes (4).

2

4

1

3

4

Fig. 27

455hsm0v

– Remove the plug (1).

– Loosen the screws (2).

– Remove the cover (3).

– Use a screw.

– Remove the lower joint holder (4).

1

4

3

2

455hsm0w

Axion 850-810 – 10.2010 – GB

Fig. 28

D2.13

Joint unit – Remove the sealing ring (1).

– Remove the conical bearing (2).

– Remove the joint housing (3).

Note: The cardan shaft (4) is removed simultaneously.

2 1

3

4 Fig. 29

455hsm0x

– Remove the circlip (1).

– Remove the spacer (2).

– Pull the cardan shaft (3) from the joint housing (4).

4 2

1 3

Fig. 30

455hsm0y

– Use a puller.

– Remove the sealing ring (1).

1

455hsm0z

D2.14

Axion 850-810 – 10.2010 – GB

Fig. 31

Joint unit – Remove the circlip (2).

– Use a puller.

– Remove the bearing (3).

3

2

Fig. 32

455hsm1a

– Use a puller.

– Extract the bearing cups (1).

– Remove the friction bushes (2).

2

1

Fig. 33

455hsm1b

– Use a puller.

– Remove the sealing ring (3).

Note: Note the fitting direction of the sealing ring.

– Use a puller.

– Remove the smooth ring (4).

3 455hsm1c

Axion 850-810 – 10.2010 – GB

4 Fig. 34

D2.15

Joint unit Refit the joint box – Use an appropriate tool.

– Change and grease the smooth bush (1).

– Use an appropriate tool.

– Change and grease the sealing ring (2).

Important: Observe the fitting direction of the sealing ring.

1

2 Fig. 35

455hsm1d

– Use an appropriate tool.

– Change and grease the upper and lower bearing housings (1).

– Change the friction rings (2).

2

1 Fig. 36

455hsm1e

– Change the bearing (1).

– Fit the stop ring (2).

Important: Check the proper fitting of the arrester ring.

– Use an appropriate tool.

– Change and grease the sealing ring (3).

2

1

3

455hsm1f

D2.16

Axion 850-810 – 10.2010 – GB

Fig. 37

Joint unit – Change the cardan shaft (1) in the joint housing (2).

2

1 Fig. 38

455hsm1g

– Position the spacer (3).

– Flange the assembly with the arrester ring (4).

3 4

Fig. 39

455hsm1h

– Use an appropriate means.

– Sling the joint unit (1) fitted with the cardan shaft (2).

Important: Grease the lips of the sealing ring (3).

Important: Do not damage the lips of the sealing ring when engaging the cardan shaft.

– Refit the joint housing.

– Refit the cardan shaft.

3 1

2 455hsm1i

Axion 850-810 – 10.2010 – GB

Fig. 40

D2.17

Joint unit – Grease the housing of the lower bearing (1).

– Grease and fit the bearing.

– Grease and fit the sealing ring (2).

Important: Observe the fitting direction of the sealing ring.

1 2

– Grease and fit the lower joint holder (3).

– Grease the contact surface of the cover (4) with the joint holder.

4 3

Fig. 41

455hsm1j

– Fit the cover (1).

– Coat the screw (2) with Loctite (243).

– Tighten the screws to a torque of 18,3 ± 2 daN·m.

– Smear the cap (3) with Loctite (243).

– Tighten the cap flush with the cover.

1

2 3

Fig. 42

455hsm1k

– Shim the joint housing. Refer to section: Shimming the the joint housing.

– Change the drive rod (1) of the steering sensor "B117" fitted with the bush (2).

2

1

B117 455hsm1l

D2.18

Axion 850-810 – 10.2010 – GB

Fig. 43

Joint unit – Grease the bearing housing (1).

1

Fig. 44

455hsm1m

– Change the upper joint holder (2) fitted with its bearing (1), stack of shims (3) and sealing ring (4).

Important: Observe the fitting direction of the sealing ring.

2

4 3

Fig. 45

455hsm1n

– Position the screws (1) of the joint holder (2).

– Tighten to 18,3 + 2 daN·m.

– Place the bush (3) on the drive rod (4) of the steering sensor "B117".

– Flange the bush (3) with the cover (5).

– Smear the screws (6) with Loctite (243).

3

– Position the screws (6) of the cover.

6

– Tighten to 0,275 + 0,025 daN·m.

2

4

5

1 455hsm1o

Axion 850-810 – 10.2010 – GB

Fig. 46

D2.19

Joint unit – Smear the cap (1) with Loctite (510) – Fit the cap.

– Refit the epicycloid reducer (2). Refer to section: Removing the epicyclic reduction gear.

1

2

Fig. 47

455hsm1p

– Place the steering rods (1).

– Replace the nut (2).

– Tighten to 13,5 + 0,5 daN·m.

– Change the pin (3).

2

1

3

Fig. 48

455hsm1q

– Refit the steering stop screws (4) with the dimension noted during the removal.

– Position the lock nut.

– Tighten to 9 daN·m.

– Use Metadiag.

– Calibrate the steering sensor "B117".

4

455hsm1r

D2.20

Axion 850-810 – 10.2010 – GB

Fig. 49

Joint unit Shimming the the joint housing – Prepare a shim of 2,5 mm "S1".

– Fit the shim onto the upper joint holder (1).

– Fit and tighten the joint holder fitted with its bearing.

Note: Shimming is performed without sealing ring.

1

S1

Fig. 50

455hsm1s

– Check the gap "S2" created by the "S1" of 2,5 mm.

Calculating the thickness of the final shim (S) is performed as follows: S = S1 – S2 – S3

S2

"S1" being the thickness of the first shim of 2,5 mm.

"S2" being the clearance found with the 2,5mm shim.

"S3" being the 0,7mm preload.

– Remove the joint holder (1).

– Place the stack of thickness shims "S" instead of the shim "S1" of 2,5 mm.

S1

Example for a "S2" clearance of 0,86 S = S1 – S2 – S3 S = 2,5 – 0,86 – 0,7 S = 0,94

455hsm1t

Axion 850-810 – 10.2010 – GB

Fig. 51

D2.21

Crown wheel and pinion and differential Exploded view

51 46 45 50

49 48

40

47

38

44

40 43

37 42

36 41

35 39

34 38

33 40 39

18

25

32

23

31

17 22

30

16

29 15

28 14

27 13

26 24

21

12

20

11

19 5

4 3 8

2 7

1 6

Fig. 52

455hsm1u

D2.22

10 9

Axion 850-810 – 10.2010 – GB

Crown wheel and pinion and differential Description 1 Nut.

18 Screw.

35 Unit.

2 Washer.

19 Shim.

36 Washer.

3 Flange.

20 Bearing.

37 Sun gear.

4 Seal.

21 Drive pinion.

38 Planet gear.

5 O-ring.

22 O-ring.

39 Spider.

6 Washer.

23 O-ring.

40 Spherical washer.

7 Bearing.

24 Locating pin.

41 Sun gear.

8 Shim.

25 Piston.

42 Washer.

9 Locating pin.

26 Bearing.

43 Unit.

10 Bevel gear cover.

27 Washer.

44 Crown wheel.

11 Screw.

28 Flange.

45 Screw.

12 Nut.

29 Locking ring.

46 Screw.

13 Stud.

30 Locking ring.

47 Locating pin.

14 Nut.

31 Backplate.

48 Bearing.

15 Washer.

32 Disc.

49 Nut.

16 Differential holder.

33 Shim.

50 Locking tab.

17 Locating pin.

34 Tapered roller bearing.

51 Screw.

Axion 850-810 – 10.2010 – GB

D2.23

Crown wheel and pinion and differential Removing the housing – Remove the front axle. Refer to section: Removing the front axle.

– Remove the drain plug (1).

– Drain the axle.

– Remove the steering actuator. Refer to section: E5 – Steering.

1

Fig. 53

455hsm1v

– Remove the lower (1) and upper (2) joint holders from the joint housings (3).

– Use an appropriate lifting means.

– Remove the joint housings (3) fitted with wheel shafts (4).

For more information refer to the part: Joint unit.

2

3

4 1 Fig. 54

455hsm1w

– Loosen the screws of the casing (1).

– Place 2 guide studs (2) instead of the screws on the upper part.

1

– Lift the casing (3) with a lever.

– Sling the housing using an appropriate means by using the holes of the fastening screws.

– Remove the casing.

3

2

455hsm1x

D2.24

Axion 850-810 – 10.2010 – GB

Fig. 55

Crown wheel and pinion and differential Differential removal – Loosen screw (1).

– Remove the arrester (2).

5

– Loosen the screws (3).

2

1

– Remove the differential holder (4).

– Use tool n° 00 1142 076 0.

– Remove the nut (5).

– Remove the differential (6).

4

3

6 Fig. 56

455hsm1y

Removing the drive pinion 2

3

– Release the nut (1).

Important: Do not damage the threading of the drive pinion (2).

– Use tool n° 00 1136 020 0.

– Remove the nut .

– Remove washer (3).

– Use a puller.

– Remove the clamp (4).

4

1

00 1136 020 0 Fig. 57

455hsm1z

– Remove the sealing ring (1).

– Remove the O-ring (2).

– Use a plastic mallet.

– Remove the drive pinion (3).

2

– Remove the bearing (4).

1

4 455hsm2a

Axion 850-810 – 10.2010 – GB

3 Fig. 58

D2.25

Crown wheel and pinion and differential – Remove the adjusting shim (1).

– Use a press.

– Remove the conical bearing (2).

1 2

Fig. 59

455hsm2b

– Use a puller.

– Remove the bearing housing (3).

– Remove the adjusting shims (4).

3 455hsm2c

D2.26

Axion 850-810 – 10.2010 – GB

4 Fig. 60

Crown wheel and pinion and differential Refitting and shimming the drive pinion If the bevel gear is not replaced:

B

– Maintain the original fitting thickness of the shims (A).

If the bevel gear is changed: – Check the thickness of shims (A) of the original fitting.

– 0,1

Example A = 1,1 mm

– Check the value (B) engraved on the original gear.

Example B = – 0,1 mm

– Calculate the dimension "C" used to calculate the thickness of the shim (S) for the new fitting.

A

C=A+B Example

Fig. 61

455hsm2d

C=A+B C = 1,1 + (– 0,1)

S

C = 1 mm

– Check the value (D) engraved on the new gear.

D

Example D = -0,2

Note: The dimensions (B) and (D) may be positive or negative.

– 0,2

– Calculate the shim thickness (S) to apply to the new gear.

S=C–D Example

E

S=C–D S = 1 – (– 0,2) S = 1,2

– Place the stack of shims (S) calculated.

Note: The thickest shims will be fitted at the ends of the stack.

455hsm2e

Fig. 62

– Refit the bearing housing (E).

Note: Change the bearing if necessary.

Important: Check the housing is properly stopped in its housing.

Axion 850-810 – 10.2010 – GB

D2.27

Crown wheel and pinion and differential – Change the bearing (1) if necessary.

– Use a press.

– Refit the conical bearing (1) onto the drive pinion (2).

2 1

Fig. 63

455hsm2f

– Refit the drive gear (1) fitted with the original shim (S1) in its housing.

S1

1 Fig. 64

455hsm2g

– Change the bearing (1) if necessary.

– Refit the bearing (1).

1

455hsm2h

D2.28

Axion 850-810 – 10.2010 – GB

Fig. 65

Crown wheel and pinion and differential – Refit the flange (1).

Note: Record the rotation torque without fitting the sealing bush.

– Refit the washer (2).

– Refit the nut (3).

2

– Use tool n° 00 1136 020 0.

– Tighten the nut to a torque of 46 ± 2 daN·m.

– Use a plastic mallet.

– Compact the bearings.

1

3

455hsm2i

Fig. 66

– Use a reading wrench fitted with tool no 00 1136 020 0.

– Check the rotation torque of the gear.

– The value must be 0,3 ± 0,1 daN·m.

Important: If the rotation torque exceeds the maximum value: Increase the shim "S1".

Important: If the rotation torque does not reach the minimum value: Reduce the shim "S1".

1

– Check again the rotation torque once the shim "S1" adjusted.

– Remove the clamp (1).

S1 00 1136 020 0

455hsm2j

Fig. 67

– Grease and change the O-ring (1).

– Use an appropriate means.

– Grease and change the sealed ring (2).

1

455hsm2k

Axion 850-810 – 10.2010 – GB

2

Fig. 68

D2.29

Crown wheel and pinion and differential – Refit the flange (3).

– Refit the washer (4).

– Smear the threads of the gear (5) with Loctite (270).

– Refit the nut (6).

4

– Use tool n° 00 1136 020 0.

– Tighten the nut to a torque of 46 ± 2 daN·m.

– Flange the nut by distorting the flange.

5

3

6 Fig. 69

455hsm2l

Dismantling the differential – Use a puller.

– Remove the bevel geas (1) and (2).

1 2

Fig. 70

455hsm2m

– Loosen the screws (1) of the crown gear (2).

– Remove the ring gear (2).

Note: Check the presence of the position mark (3).

Make a mark if necessary.

2

455hsm2n

D2.30

Axion 850-810 – 10.2010 – GB

1

3

Fig. 71

Crown wheel and pinion and differential – Remove the retainer (1).

– Pull out the counterplates (2).

– Pull out the discs (3).

1 2

3

Fig. 72

455hsm2o

– Loosen the screws of the housing (1).

– Remove the unit (2).

– Remove washer (3).

– Remove the sun gear (4).

4

– Remove the planetaries (5) with spherical washers (6).

3

2

– Remove the journals (7).

1 5

6

7 Fig. 73

455hsm2p

– Remove the sun gear (1).

– Remove washer (2).

1

2

455hsm2q

Axion 850-810 – 10.2010 – GB

Fig. 74

D2.31

Crown wheel and pinion and differential – Use a puller.

– Remove the bearing housing (1) on the piston side.

– Remove the adjusting shim (2).

1

1

2 Fig. 75

455hsm2r

Note: Make a mark (1) of the piston's position.

– Remove the retainer (2).

2

1

Fig. 76

455hsm2s

– Send air on the level of the supply hole to remove the piston (1).

2

1

455hsm2t

D2.32

Axion 850-810 – 10.2010 – GB

Fig. 77

Crown wheel and pinion and differential – Remove O-rings (3) and (4).

3

4

Fig. 78

455hsm2u

– Use a press.

– Disassemble the piston.

– Remove the bearing (1).

– Remove the clamp (2).

– Remove the piston (3).

3

1

2

2

Fig. 79

455hsm2v

Refitting and shimming the differential – Grease and always change the O-rings (1) and (2) of the piston.

1 2

455hsm2w

Axion 850-810 – 10.2010 – GB

Fig. 80

D2.33

Crown wheel and pinion and differential – Change the bearing (2) if necessary.

– Use a press.

– Assemble the flange (1) with the beaing (2) then the piston (3).

1 2

C

Fig. 81

455hsm2x

– Lubricate the piston housing (1).

– Refit the piston .

Note: Observe the mark (2) made upon removal.

– Flange the piston with the retaining ring (3).

3 1 2

Fig. 82

455hsm2y

– Refit the sun gears (1) – Place the washers (2).

– Refit the planet gears (3).

– Refit the spherical washers (4).

4 2

– Refit the journals (5).

5 1

2

455hsm2z

D2.34

Axion 850-810 – 10.2010 – GB

3

1

Fig. 83

Crown wheel and pinion and differential – Observe the assembly marks (2) to refit the housings (1).

– Tighten the screws (3) to a torque of 12 + 1 daN·m.

3

1

2

Fig. 84

455hsm3a

– Refit the crown gear (1) onto the unit (2).

– Smear the screws (3) with Loctite (270).

– Tighten the screws (3) to a torque of 17,5 + 0,5 daN·m.

3

1 2

Fig. 85

455hsm3b

– Place the disks (1) and backing plates (2) in the unit (3).

Note: Stacking starts and ends by a back plate (2).

– Flange the stack with the retaining ring (4).

– Check thickness of the stack.

4

– Change the disks and backplatings if required.

1

2

3

455hsm3c

Axion 850-810 – 10.2010 – GB

Fig. 86

D2.35

Crown wheel and pinion and differential – Change the bearings (1) and (2) if necessary.

– Refit the bevel gears (1) and (2) on the unit (3).

– Grease the bearings.

1 2

3 Fig. 87

455hsm3d

If the bevel gear is changed: – Place a thickness shim (1) of 1,5 mm.

If the bevel gear is not replaced: – Place the original stack of shims (1).

– Refit the bearing housing (2).

2 1

455hsm3e

D2.36

Axion 850-810 – 10.2010 – GB

Fig. 88

Crown wheel and pinion and differential – Refit the differential. Refer to section: Refitting the differential – Check clearance between the teeth of the crown gear and tapered pinion.

There must be between 0,20 and 0,28 mm of play.

The gap is measured at the middle of the tooth.

– According to the gap found, adjust the 1,5 mm shim on the piston side.

If the gap between the teeth is too large: – Reduce the adjustment shim.

If the gap between the teeth is too small: – Increase the adjustment shim.

– Refit the differential. Refer to section: Refitting the differential.

Fig. 89

455hsm3f

Refitting the differential – Place the differential in its housing.

– Refit the bracket (1).

– Use tool n° 00 1142 076 0.

2

– Refit the nut (2).

4

If shimming has not been performed, pre-tightening is enough.

Note: If shimming is done: Smear the fastening screws of the bracket (3) with Loctite (270). Tighten the screws to a torque of 16 ± 1 daN·m.

00 1142 076 0

– Tighten the nut (2).

– Use tool n° 00 1136 020 0.

– Check the rotation torque.

1

The rotation torque must be 0,35 ± 0,1 daN.m.

– Tighten or loosen the nut (2) to be within tolerance.

455hsm3g

3

5 Fig. 90

Important: If the bearings have not been changed: Measure the peak torque. Otherwise, measure the permanent rotation torque.

– Flange the retainer (4).

– Tighten the retainer screw (5) at 2 ± 0,5 daN.m.

Axion 850-810 – 10.2010 – GB

D2.37

Crown wheel and pinion and differential Refitting the housing – Place 2 guide studs (2) instead of the screws on the upper part.

1

– Use an appropriate means and the fastening screw holes to sling the housing (3).

– Apply Loctite (510) to the contact surface of the housing with the axle body.

3

– Slide the housing onto the 2 studs placed previously.

– Smear the fastening screws (1) of the housing with Loctite (243).

2

– Tighten the screws (1) to a torque of 22,5 ± 0,5 daN·m.

Fig. 91

455hsm1x

– Use an appropriate lifting means.

– Refit the joint housings (3) fitted with the wheel shafts (4).

– Refit the lower (1) and upper (2) joint holders of the joint housings (3).

For more information refer to the part: Joint unit.

2

– Tighten the screws of the joint holders at a torque of 18,3 ± 2 daN.m.

3

4 1 Fig. 92

455hsm1w

– Refit the steering jack. Refer to section: E5 – Steering.

– Top up the axle oil through the hole (1).

– Tighten the filling plug on the axle housing.

– Refit the front axle. Refer to section: Refitting the front axle.

– Use Metadiag.

– Calibrate the steering sensor "B117".

1 455hsm3h

D2.38

Axion 850-810 – 10.2010 – GB

Fig. 93

D3 4 WD POWER TAKE-OFF HOUSING

Axion 850-810 – 09.2010 – GB

4 WD power take-off housing General Declutched position The solenoid valve used to engage the front axle is mounted on the right-hand hydraulic cover (see chapter "B"). It supplies the piston, under a 21-bar pressure, through the internal pipe. The latter moves along the hub and pulls the bell which compresses the Belleville washers and releases the discs. The bell pinion then rotates freely on the shaft.

Clutched position Once pressure is switched off, the expansion of the Belleville washers pushes back the bell, connecting the gear with the bell, and allowing the shaft to rotate.

Note: When the engine is switched off and on braking, the front axle is engaged systematically.

Lubrication The oil supplied by the lubrication circuit arrives through the fitting and lubricates the clutch through an internal pipe and a pipe (B) bored in the shaft.

Key (Fig. 1 to 3) 1 Circlip.

15 Bearing cone.

29 Bearing cone.

2 Bearing cup.

16 Bearing cup.

30 Shims.

3 Bell.

17 Screw.

31 O-ring.

4 Panel (Axle GPA 40).

18 Backing plates.

32 Casing.

5 Hub.

19 Cover.

33 Spacer.

6 Plain bush.

20 Discs.

34 Shaft.

7 Bell gear.

21 Belleville washers.

35 Lubrication pipe.

8 Drive gear.

22 O-ring.

36 Supply hose.

9 Closing plate.

23 O-ring.

37 Lubication pipe.

10 Shims.

24 Piston.

38 21-bar supply pipe.

11 Splined adjustment shim.

25 Circlip.

12 Circlip.

26 Drain plug.

A Internal supply duct.

13 Sealing ring.

27 O-ring.

B Internal lubrication duct.

14 Hydraulic bushing (Axle GPA 40).

28 Seal.

D3.2

Axion 850-810 – 09.2010 – GB

4 WD power take-off housing

16 32

33

34

31

30

1

29

28

2

27

3

26

4

25

5

24

6

23

7

22

21

20

8

19

9

18

10

B

11

17

12

A

13

14

15

Cross-section of the 4-wheel drive housing

Fig. 1

473hsm12

Axion 850-810 – 09.2010 – GB

D3.3

4 WD power take-off housing Cross-section of the 4-wheel drive housing

35

36

A B

37 38

36

35 Fig. 2

473hsm11

D3.4

Axion 850-810 – 09.2010 – GB

4 WD power take-off housing Exploded view of the 4-wheel drive housing

14 13 15

16 6 7

12 10

11 9 18 20

3 21 22 5 34

24 23 25 2

27

29 30 31 33 1

Fig. 3

473hsm13

Axion 850-810 – 09.2010 – GB

D3.5

4 WD power take-off housing Removing the 4-wheel drive clutch – Immobilise the tractor.

– Remove the rear wheels.

– Place the tractor on stands.

– Apply the handbrake.

– Partial removal of the cab (see chapter on cab operations 1 to 14).

– Drain the transmission system.

– Pull out the hitch ball.

– Remove the hitch ball bracket.

– Remove the cover of the 4-wheel drive housing.

– Present the rolling bracket (A) of the rear axle under the tractor.

– Fasten the bracket on the locations of the 4-wheel drive housing cover screws (B) and the location of the hitch ball bracket (C).

Fig. 4

473hsm14

– Disconnect any pipes, hoses and wiring harnesses that prevent removal of the housing.

– Remove the radar (4 screws) to access the rear axle casing screws.

C

– Loosen the screws of the rear axle casing.

– Disconnect the rear axle.

– Remove the circlip.

– Remove the spacer.

B

– Remove the adjustment shims and bearing cup.

A

– Pull out the shaft with the bearing while maintaining the clutch assembly and bell gear through the visit trap.

– Remove the clutch, bell gear, bearing cone and plate assembly.

– Remove the bushing .

473hsm15

D3.6

Axion 850-810 – 09.2010 – GB

Fig. 5

4 WD power take-off housing Removing the clutch – Remove the bearing cone.

– Separate the bell pinion from the clutch assembly.

Using a press and an appropriate rig, compress the Belleville washers to remove the stop ring (A) and shims (B) and (C).

– Decompress the Belleville washers .

– Remove the cover (D), the discs (E) and the backing plates . Using a press and an appropriate rig, press the piston to compress the Belleville washers.

B

H A

– Remove the circlip (F) with pliers.

D

– Remove the Belleville washers .

E

Reassembling the clutch

C

Note: All seals must be changed and lubricated on refitting.

G Fig. 6

473hsm16

– Check and clean the parts. Replace any defective parts.

– Make sure that the ducts are not blocked.

– Position the Belleville washers in the bell (G).

– Fit the hub (H) in the bell.

– Align the discs with the front housing and fit the backing plates.

– Fit the cover (D).

F

Note: The cover (D) and the number of discs and backing plates differ according to assembly options (with or without proportional power take-off) and tractor power..

G

473hsm17

Axion 850-810 – 09.2010 – GB

Fig. 7

D3.7

4 WD power take-off housing Fitting shims to the clutch "J1" B

J1 = 1 ± 0,1 mm

– Fit the clutch without the shims (A). Using a suitable jig, apply a load of approximately 2 000 daN in order to compress the Belleville washers completely and join the discs and backplates.

A

– Refit the circlip (B).

– With a set of feeler gauges, measure the space "X" between the circlip (B) and the cover (C).

– Remove the circlip.

X

A

– Select a shim thickness so that 1 mm (± 0,1 mm) of play "J1" remains.

C

Important: Fit the splined shim (A) on the circlip (B) side.

– Position the selected shims.

– Refit the circlip (B).

– Refit the piston (D). Using a press and a suitable jig, fit the circlip (E) permanently.

Fig. 8

473hsm18

– Couple the clutch assembly to the bell pinion.

B A

D C

E 473hsm19

D3.8

Axion 850-810 – 09.2010 – GB

Fig. 9

4 WD power take-off housing Fitting shims to the shaft "J2"

J2 = 0 + 0,1 mm

– Fit the conical bearings of the shaft (A) temporarily.

– Fit the spacer (B).

B

– Mount the shaft (A) and the circlip (C) temporarily without the clutch assembly, pinion or shims . Using pliers, turn alternately from right to left to seat the bearings correctly.

C A

– Place a dial gauge at the end of the shaft (A).

– Set the dial gauge to zero and push the shaft to measure the play "J2".

– Repeat the operation bwhile pulling the shaft.

– Depending on the amount of play measured, select the thickness of shims required to obtain 0 to 0,1 mm of play.

– Remove the stop ring (C), shaft (A), bearings, spacer (B).

Fig. 10

472hsm04

– Fit the shims selected earlier after coating them with miscible grease.

A

473hsm21

Axion 850-810 – 09.2010 – GB

Fig. 11

D3.9

4 WD power take-off housing Refitting the shaft Note: All seals must be changed and lubricated on refitting.

– Fit the bushing (A) while taking care not to damage the new rings.

– Fit the spacer (B).

– Mount the full power take-off unit permanently in the rear axle housing.

– Fit the circlip (C).

B A

C

D E

Fig. 12

473hsm20

D3.10

Axion 850-810 – 09.2010 – GB

4 WD power take-off housing Coupling the rear axle/gearbox – Clean the parting surface of the rear axle.

– Smear the parting surface with Loctite (510) and particularly the passage holes of the fastening screws.

Note: To align the fluting, turn the right-hand axle shaft tube.

– Couple the rear axle with the gearbox.

– Approach the rear axle to the gearbox to start engaging the shafts.

– Tighten the fastening screws at 17,5 daN·m smeared with Loctite (243).

– The shafts are engaged in the following sequence:

– Connect the hydaulic piping, harnesses and parts removed beforehand.

1. Engage the 4 wheel drive clutch shaft in the sleeve on the gearbox side.

– Top up the housings with oil.

Note: To align the fluting, turn the clutch through the visit trap or directly with pliers at the tip of the shaft.

– Check the cover and ducts for leaks.

2. Engage the power take-off shaft.

– Remove the rear axle bracket.

Note: Beware the spring present at the tip of the power take-off shaft.

– Refit the bracket and the hitch ball.

Note: To align the fluting, turn the flywheel (Refer to chapter A "Engine").

3. Place the sleeve between the shaft protruding from the gearbox and the drive gear.

– Refit the wheels.

– Clean the cover (D) and its contact surface with the housing.

– Coat the cover seal face with Loctite (510).

– Refit the cover (D) while tightening the screws (E) at 8 daN·m smeared with Loctite (243).

– Engage the front axle with the tractor running.

Axion 850-810 – 09.2010 – GB

D3.11

Link shaft Removing the linking shaft – Loosen the screws (1).

2

– Remove the protection (2).

1 2

Fig. 13

473hsm22

– Loosen the screws (1).

– Remove the flanges (2).

2

1

Fig. 14

473hsm23

– Remove the protection holder (1).

– Loosen the 3 screws (2) from the sleeve (3).

– Remove the link shaft (4).

– Loosen the screws (5).

– Remove the sleeve (3).

4 3

1 2 5 473hsm24

D3.12

Axion 850-810 – 09.2010 – GB

Fig. 15

Link shaft Removing the journal crosses – Remove the arrestor rings (1).

– Use a press.

– Remove the journal cross (2).

1 4 2

Fig. 16

473hsm25

Note: The operation destroys the needle cages (3) of the journal crosses.

– Perform the same procedure for both sides of the link shaft (4).

4 2

3

Fig. 17

473hsm26

Refitting the journal crosses – Remove the needle cages (1) from the new journal cross (2).

1

– Place the journal cross on the jaw of the link shart (3).

– Insert by hand the first needle cage of the journal cross onto the jaw.

3 2

473hsm27

Axion 850-810 – 09.2010 – GB

Fig. 18

D3.13

Link shaft – Use a press.

– Insert the first needle cage (1).

Note: Leave some space to insert the stop ring (2).

Note: The journal crosses (3) must protrude from the opposite side to facilitate fitting the second cage.

– Place the first stop ring (2).

2

1

3

Fig. 19

473hsm28

– Insert the second needle cage (1).

Note: Check that the first needle cage (2) is pushed against the first stop ring (3) on the opposite side.

1

Important: Do not force with the press. The needle cage may be damaged.

4

– Place the second stop ring (4).

– Perform the same procedure for both sides of the link shaft .

– Check that the assembly moves freely.

3

2

Fig. 20

473hsm29

Refitting the link shaft – Assemble the sleeve (2) onto the link shaft (1).

– Smear the 8 coupling screws (3) with Loctite (638).

– Tighten the 8 coupling screws (3) at a torque of 7 ± 0,7 daN.m.

– Grease the grooves of the sleeve (1).

3 2 1

– Smear the 3 screws (4) of the sleeve with Loctite (638).

4

– Refit the back of the link shaft fitted with the sleeve.

– Tighten the 3 screws (4) of the sleeve at a torque of 7 ± 0,7 daN.m.

473hsm30

D3.14

Axion 850-810 – 09.2010 – GB

Fig. 21

Link shaft – Refit the link shaft.

– Refit the flanges (1).

– Tighten the 4 screws (2) of the flanges (1) at a torque of 3,7 ± 0,3 daN.m.

2

1

Fig. 22

473hsm31

Checking the condition of the link shaft – Remove the protection .

– Use a comparator.

– Check the horizontal gap (1).

1

Fig. 23

473hsm32

– Check the vertical gap (2).

– Measure on the 2 sides of the link shaft.

The gaps measured must be less than 0,15 mm.

– Change the journal crosses of the link shaft if one of the gaps measured exceeds 0,15 mm. (Refer to sections: Removing the journal crosses – Refitting the journal crosses).

2

473hsm33

Axion 850-810 – 09.2010 – GB

Fig. 24

D3.15

Notes

D3.16

Axion 850-810 – 09.2010 – GB