CLAAS Arion 630-610 C Repair Manual - PDF DOWNLOAD

g

D1 RIGID FRONT AXLE 20.22 D2 4 WHEEL DRIVE

Technical support

Chapter D – Repair

Arion 630-610 C

00 1137 920 0 – 12.2008 publication

CONTENTS

D1 – RIGID FRONT AXLE 20.22 TORQUE SETTINGS AND SEALANTS ......................................................................................................................... D1.3 PRELIMINARY OPERATIONS PRIOR TO WORKING ON THE FRONT AXLE............................................................ D1.5

EPICYCLIC REDUCTION GEAR AND WHEEL HUB EXPLODED BRIDGE 20.22 ........................................................................................................................................... D1.6 REMOVING THE EPICYCLIC REDUCTION GEAR ...................................................................................................... D1.7 REFITTING THE EPICYCLIC REDUCTION GEAR ....................................................................................................... D1.7 REMOVING THE WHEEL HUB...................................................................................................................................... D1.8 REFITTING THE WHEEL HUB ...................................................................................................................................... D1.8

WHEEL SWIVEL PIN EXPLODED VIEW ........................................................................................................................................................ D1.10 REMOVING THE WHEEL PIVOT ................................................................................................................................ D1.11 REFITTING THE WHEEL PIVOT ................................................................................................................................. D1.12

BEVEL GEAR AND DIFFERENTIAL EXPLODED VIEW OF DIFFERENTIAL CASE............................................................................................................. D1.14 EXPLODED VIEW OF DIFFERENTIAL CASE 20.22................................................................................................... D1.15 REMOVING THE BEVEL GEAR AND DIFFERENTIAL ............................................................................................... D1.16 CROSS-SECTIONAL VIEW OF DISCS AND BACKPLATES ...................................................................................... D1.17 DISMANTLING THE DIFFERENTIAL .......................................................................................................................... D1.17 ADJUSTING PINION PROTRUSION ........................................................................................................................... D1.17 SETTING THE BEVEL PINION PRELOAD.................................................................................................................. D1.19 ADJUSTING BACKLASH ............................................................................................................................................. D1.19 ADJUSTING THE DIFFERENTIAL BEARING PRE-LOAD .......................................................................................... D1.20 CHECKING THE SETTINGS........................................................................................................................................ D1.21 FINAL REASSEMBLY .................................................................................................................................................. D1.22

D2 – 4 WHEEL DRIVE UNIT EXPLODED VIEW OF UNIT........................................................................................................................................... D2.2 CROSS SECTIONAL VIEW OF UNIT (WITH PROPORTIONAL POWER TAKE-OFF) ................................................ D2.3 CROSS SECTIONAL VIEW OF UNIT (WITHOUT PROPORTIONAL POWER TAKE-OFF)......................................... D2.4 LOCAL MANUFACTURING TOOL................................................................................................................................. D2.5 REMOVING THE CLUTCH FROM THE POWER TAKE-OFF UNIT .............................................................................. D2.6 REMOVING THE CLUTCH ............................................................................................................................................ D2.7 REFITTING THE CLUTCH ............................................................................................................................................. D2.9 FINAL STEPS............................................................................................................................................................... D2.11

Arion 630-610 C – 02.2009 – GB

Notes

Arion 630-610 C – 02.2009 – GB

D1 RIGID FRONT AXLE 20.22

Arion 630-610 C – 12.2008 – GB

Notes

D1.2

Arion 630-610 C – 12.2008 – GB

Rigid Front Axle Torque settings and sealants

7 daN.m (271)

12 daN.m

19 daN.m

0,8 daN.m

1 daN.m

(20.22) 1,3 mm

1,6 mm

8 daN.m

(243) 2,5 daN.m

0,8 daN.m

(510)

(20.22) 2,7 mm

(20.22) 10,5 daN.m (243)

1,3 daN.m

(243)

451msm0f

(510)

Fig. 1

Arion 630-610 C – 12.2008 – GB

D1.3

Rigid Front Axle

(648)

26 daN.m

12 daN.m

(648)

16 daN.m

20 daN.m

30 daN.m

25 daN.m 451msm92

D1.4

15 daN.m

1 daN.m

22 daN.m

7 daN.m

7 daN.m Fig. 2

Arion 630-610 C – 12.2008 – GB

Rigid Front Axle Preliminary operations prior to working on the front axle – Position the tractor on flat stable ground.

– Apply the handbrake.

– Chock the rear wheels.

– Raise the relevant front wheel and support using stands.

– Remove the wheel.

Arion 630-610 C – 02.2009 – GB

D1.5

Epicyclic reduction gear and wheel hub Exploded view – Front axle 20.22

16 17 18 19

13

20

14

23

15

6

9

21

7

22

8 3 4 11

1 2 451msm93

Fig. 3

Description 1 Filling, dipstick and drain plug.

9 Circlip.

18 Tapered roller bearing.

2 Screw.

10 Screw.

19 Locking ring.

3 Planet gear shaft.

11 Planet carrier cover.

20 Ring gear carrier.

4 Sleeve.

12 Intermediate washer.

21 Sleeve.

5 Washer.

13 Seal.

22 Screw.

6 Needle.

14 Tapered roller bearing.

23 Crown wheel.

7 Washer.

15 Wheel hub.

24 Washer.

8 Planet gear.

16 Wheel stud.

25 Washer.

17 O-ring.

26 Circlip.

D1.6

Arion 630-610 C – 02.2009 – GB

Epicyclic reduction gear and wheel hub Removing the epicyclic reduction gear – Place the plug (1) in the high position (to prevent projection due to excessive pressure).

2

– Unscrew the plug (1).

– Place a recipient under the reduction gear.

– Place the drain hole in the low position.

– Drain the oil.

– Remove the screws (2).

– Remove the planet carrier cover (11) using the two edge slots.

– Systematically replace the O-ring.

– Replace any defective components.

11

Note: The cover (11) and pins (3) form a single reference.

3

451msm95

Fig. 4

Refitting the epicyclic reduction gear – Refit the satellites.

– Index the washer (7).

– Fasten the stop ring (9).

– Fit the new new circlip (26) with splined washers (24) and (25).

– Grease the seal (17).

– Fit the cover (11).

– Tighten the screws (2) to 2,5 daN.m.

26

– Fill with oil and check the level.

24

25

– Proceed in reverse order to the preliminary operations.

451msm97

Arion 630-610 C – 02.2009 – GB

Fig. 5

D1.7

Epicyclic reduction gear and wheel hub Removing the wheel hub – Remove the epicylic reduction gear.

– Remove the retaining ring (26) and washers (25) and (24).

– Unscrew the 8 screws (22).

– Insert 2 of these screws (22) into the holes (A) provided and use them as an extractor to remove the ring gear carrier.

– Remove the hub (15).

26

– Extract the retainer (19) if necessary.

24

25

451msm97

Fig. 6

22

A

Fig. 7

451hsm13

15

19 451hsm14

Fig. 8

Refitting the wheel hub – Check dimension "A" (Fig. 10).

– Use tool n° 60 0500 653 5 to fit the new sealing bush (13), (Fig. 9).

60 0500 653 5 451hsm15

D1.8

Arion 630-610 C – 02.2009 – GB

Fig. 9

Epicyclic reduction gear and wheel hub Important: No specific preload or clearance setting is required to fit bearings (14) and (18). Check dimensions “A”, “B”, “C” before fitting new parts.

14

A = 8,45 to 8,5 mm.

B = 54,775 to 54,825 mm.

C = 23,072 to 23,173 mm.

18

C

A

C

– Refit the hub and the reducer in the reverse sequence of removal.

B

– Tighten the screws (22) to 12 daN.m.

451hsm16

Fig. 10

22

26 451msm90

Arion 630-610 C – 02.2009 – GB

25

24

Fig. 11

D1.9

Wheel swivel pin Exploded view

33

32

34

35 36 37 30

38

31

39

451msm98

Fig. 12

Description 30 Left-hand wheel pivot.

34 Grease nipple.

37 Right-hand wheel pivot.

31 Steering stop.

35 Seal.

38 Lower pivot pin.

32 Upper pivot pin.

36 Plain bush.

39 Grease nipple.

33 Screw.

D1.10

Arion 630-610 C – 02.2009 – GB

Wheel swivel pin Removing the wheel pivot 18

32

– Remove the reduction gear and wheel hub (see relevant paragraph).

– Extract the bearing inner ring (18) with an extractor.

– Support the wheel pivot with a hoist.

– Remove the lower (38) and upper pins (32).

– Remove the Belleville washers (41) and (42).

– Pull the sealing bush (35).

38

– Extract the bush (36).

– Fit the new bush (36) using tool n° 60 0500 653 8.

– Grease the sealing ring (35).

451msm39

Fig. 13

– Fit the seal with tool n° 60 0500 653 9.

32

38 Fig. 14

451msm40

41 42

451msm15

Fig. 15

35 36

451msm16

Fig. 16

451msm17

Arion 630-610 C – 02.2009 – GB

Fig. 17

D1.11

Wheel swivel pin – Remove the universal shaft.

– Remove the seal (43) from the axle body.

36

35

45

43

44

– Extract bush (44) from the axle body.

Note: To remove the bush (45) from inside the axle, it must be cut before it can be extracted.

– Extract the upper bush (45) and the lower ball joint (46) from the pivot pin housings with an extractor.

– Extract the ball joint (40) mounted on the pin.

Refitting the wheel pivot

46

– Fit the new bush (44) to the axle body using tool n° 60 0500 653 8.

40

451msm18

Fig. 18

– Grease the chamber of the new seal (43) and coat around the edge with Loctite (510).

– Place the new seal inside the axle body with tool n° 60 0500 653 9.

43

45 Fig. 19

451msm19

40

451msm20

Fig. 20

60 0500 653 8

60 0500 653 9 451hsm28

D1.12

Arion 630-610 C – 02.2009 – GB

Fig. 21

Wheel swivel pin Note: The lower and upper pivot pin bushes can be inserted inside the axle body if they are chilled beforehand.

46

– Fit the pivot pin inner bushes (45) and (46).

– Position the bushes (40) on the lower pivot pins with a press (Fig. 20).

– Grease the pivot pin housings.

– Position the Belleville washers (41) and (42).

– Insert the universal shaft into the axle body.

– Support the wheel pivot.

– Fit pivot pins (32) and (38) and tighten the screws to 19 daN.m.

Note: Make sure that the Belleville washers remain in place.

For the remainder of the operations, proceed in reverse order to removal, tightening to the specified torques.

45

451msm21

Fig. 22

41 42

Fig. 23

451msm22

32

38 451msm41

Arion 630-610 C – 02.2009 – GB

Fig. 24

D1.13

Bevel gear and differential Exploded view of differential case

25 24 18 5 17 16 15 8 7 6 5

26

4

23

3

22

2

21

1

20 19 9 10 11 12 13 14

451msm0g

Fig. 25

Description 1 Seal.

10 Bush.

19 Drain plug.

2 Castellated nut.

11 O-ring.

20 Locating pin.

3 Washer.

12 Bearing sleeve.

21 Sleeve.

4 Tapered roller bearing.

13 Screw.

22 Flange.

5 Washer.

14 Grease nipple.

23 Screw.

6 Sleeve.

15 Cover attachment screw.

24 Shim.

7 Bush.

16 Cover.

25 Pinion.

8 Seal.

17 Spacer.

26 Crown wheel.

9 Bush.

18 Tapered roller bearing.

D1.14

Arion 630-610 C – 02.2009 – GB

Bevel gear and differential Exploded view of differential case 20.22

34 38 35 36

32 44

39 43

29 28 27 42 41 30 37 36

31 40

34 35

33 451msm0b

Fig. 26

Description 27 Disc.

33 Differential housing.

39 Sun gear.

28 Backplate.

34 Screw.

40 Tapered washer.

29 Disc.

35 Locking tab.

41 Spider.

30 Half-shaft.

36 Castellated nut.

42 Pin.

31 Planet gear.

37 Bearing.

43 Cover.

32 Pin.

38 Screw.

44 Tapered roller bearing.

Arion 630-610 C – 02.2009 – GB

D1.15

Bevel gear and differential Removing the bevel gear and differential – Immobilise the tractor (see "Preliminary operations prior to working on the front axle").

– Remove the front axle.

5

Note: To remove the drive pinion and differential lock assembly, the universal shafts must be removed beforehand.

C 18 17

– Drain the differential by unscrewing the plug (19), (Fig. 25).

4

– Remove the bearing (12) by unscrewing the screw (13).

2

– Extract the bushes (9), (10), (7).

1

– Remove the ring seal (1).

– Loosen the bevel pinion nut (2) using tool n° 60 0500 653 6.

451hsm36

Fig. 27

451hsm34

Fig. 28

– Support then remove the cover (16) containing the drive pinion and differential.

– Remove the screws (34) as well as the pawls (35).

– Mark the differential bearing flanges (22) in relation to the cover (16) to avoid reversing them on refitting.

– Unscrew the toothed nuts (36) using tool n°60 0500 653 4.

– Remove the screws (23).

Note: Do not reverse the bearings of the differential bearing blocks if they are not replaced.

– Put the cover fitted with the bevel pinion in a vice.

– Hold the drive pinion.

– Unscrew the nut (2) from the bevel pinion and extract it.

– Extract the inner bush from the bearing with an extractor.

– Extract the outer rings from the bevel pinion bearings (4) and (18).

D1.16

Arion 630-610 C – 02.2009 – GB

Bevel gear and differential Cross-sectional view of discs and backplates Description

27 28

27 Thickness of a disc: 1,3 ± 0,03 mm.

28 Thickness of a backplate: 1,6 ± 0,03 mm (minimum thickness: 1,45 mm).

29 Thickness of a disc: 2,7 ± 0,03 mm (minimum thickness: 2,6 mm).

29

451msm0c

Fig. 29

Dismantling the differential Note: Mark the cover in relation to the front housing before opening.

22

– Remove the ring gear.

– Open the housing.

– Remove all parts contained inside and check them.

D

X

– Check the thickness of the discs (27), (29) and backplates (28) of the self-locking differential.

16 451msm36

Fig. 30

Adjusting pinion protrusion – Mount the bevel pinion bearings in the cover (16).

– Maintain pressure on the inner races of these bearings using a screw and washers (Fig. 30). The bearings should rotate when turned by hand.

250

– Mount a bearing half-flange (22) and measure the diameter "D" (Fig. 30).

90

– Place the locally made tool (X) at the bottom of the bearing blocks (Fig. 31 and 33).

mm

mm

Ø = 15 mm

Ø = 25 mm Ø = 50 mm

X 451hsm37

Arion 630-610 C – 02.2009 – GB

Fig. 31

D1.17

Bevel gear and differential – Measure dimension "Y" with the end of the depth gauge against the bearing inner ring.

– Deduct "B": B = Y – 50 + (D/2).

– Add shims to the bevel pinion shaft to thickness "C": C = B – V.

C

5

18 17 4 2 1 451hsm36

Fig. 32

V. Protrusion distance marked on the pinion head.

E. N° of the pinion/ring gear pair.

50. Diameter of the locally made tool.

Y

B

50

D

X

V

107,00 00 E

451hsm38

D1.18

Arion 630-610 C – 02.2009 – GB

Fig. 33

Bevel gear and differential Setting the bevel pinion preload – Replace the washer (5) and the spacer (17).

Note: This adjustment is made on the bevel pinion only, without the ring gear, after fitting the 2 tapered bearings.

Note: All preloads must be measured without the sealing ring (1).

5

C 18

Important: Do not tighten the nut in one go.

17

– Tap the ends of the pinion lightly with a hammer to seat the bearings correctly.

4

– A new spacer (17) must be fitted.

2

– The nut must be tightened gradually, without overtightening, using tool n° 60 0500 653 6.

1

– Wind a cord around the splined part of the pinion (Fig. 35).

451hsm36

Fig. 34

– Using spring balance n° 77 0138 800 8, measure the force (P) required to rotate the pinion. It should be between 9,2 and 13,7 daN. – Lock the nut by bending the lock washer.

Adjusting backlash – Refit the differential housing.

– Refit the flanges (22).

– Tighten the screws (23) to 26 daN.m.

– Check the tooth clearance, which must be included between 0,18 and 0,23 mm for the 20.22 axles.

P

– Repeat several times by checking a number of teeth.

– If the values differ, place the probe on the tooth where the lowest value was recorded.

– Apply the same torque to the differential bearing nuts: Use the tools n°60 0500 653 4.

451hsm39

Fig. 35

– Place the dial gauge probe at 90° with the surface of a pinion tooth.

22

451hsm40

Arion 630-610 C – 02.2009 – GB

Fig. 36

D1.19

Bevel gear and differential – Adjust the bearing nuts to move the crown wheel away from or closer to the pinion, starting on the crown wheel side.

– Tap the bearings lightly with a plastic hammer to ensure correct seating.

– Adjust the bearing slotted nuts as follows: • If the backlash measured is below the stated tolerance range, screw in the nut on the side away from the crown wheel and screw out the other nut by the same amount.

36

36

• If the backlash measured is above the stated tolerance range, screw out the nut on the side adjacent to the crown wheel and screw in the other nut by the same amount.

Adjusting the differential bearing preload

Fig. 37

451hsm48

– Adjust the meshing backlash beforehand.

– Wind a cord around the splines in the pinion shaft.

– Measure the force required to rotate the crown wheel and pinion assembly "F".

– Depending on the bevel pinion preload "P" measured previously, apply the formula: F = P + 3,2 at 4,8 daN. – Example: If P = 11 daN, F = 14,2 to 15,8 daN. – Adjust the different bearing nuts with the same torque while ensuring that the preset backlash is maintained.

Note: Do not invert the bearing nuts or the direction in which the crown wheel is fitted.

F

451hsm46

D1.20

Arion 630-610 C – 06.2009 – GB

Fig. 38

Bevel gear and differential Checking the settings – To check the contact print of the bevel gear teeth, stain the ring gear with minium and detect the contact. The contact print must always be examined on the teeth of the ring gear and on 2 sides. Before checking, fit the ring gear with Loctite (243) and tighten the screws to 105 daN.m.

Contact correct (A) – If the bevel gear is set correctly, the contact of the teeth surfaces will be regular.

Excessive contact at the tip of the tooth (B) – Move the pinion closer to the ring gear and then move the ring gear away from the pinion to adjust the backlash.

Excessive contact at the base of the tooth (C)

451hsm42

– Move the pinion away from the ring gear and then move the ring gear closer to the pinion to adjust the backlash.

Fig. 39

A

B

Correction actions D. Move the pinion to modify contact type (B).

E. Move the pinion to modify contact type (C).

If (D) and (E) are necessary, reset the preloads and the meshing backlash.

C

Fig. 40

451hsm43

E

D

451hsm44

Arion 630-610 C – 02.2009 – GB

Fig. 41

D1.21

Bevel gear and differential Final reassembly – Proceed in reverse order to the removal operations, tightening to the specified torques.

– Refit the axle and tighten the 4 axle mounting screws to a torque of 40 daN.m and the wheels to 45 daN.m.

– Coat the bearing surfaces of the differential housing with Loctite (510).

– Check the condition of the breather.

– Mount the combined joint (1) with tool n° 60 0500 653 7.

D1.22

Before putting the front axle back into operation, remember to top up the oil levels: Axle and epicyclic reduction gears.

Arion 630-610 C – 02.2009 – GB

D2 4 WHEEL DRIVE UNIT

Arion 630-610 C – 12.2008 – GB

4 wheel drive unit Exploded view of unit

6 4 5 2 3 2 1 12 11 12 13 14 8 15 25 16 19 34

18

33

20

32

24 21

31

22 23 37 36

30 29

9

28

35

27 26 474msm01

Fig. 1

Description 1 2 3 4 5 6 7 8 9 10 11 12 13

D2.2

Sleeve.

Double pin.

Shaft.

Circlip.

Sleeve.

Pinion.

Proportional power take-off shaft.

Bronze bush.

Shim(s).

Screw.

Bush.

Sealing piston ring.

Bearing cup.

14 15 16 17 18 19 20 21 22 23 24 25 26

Bearing cone.

Bell gear.

Front axle clutch.

Cover.

Bearing cup.

Bearing cone.

Shim(s).

O-ring.

Seal carrier bushing.

Circlip.

Lip seal.

Shaft.

Circlip.

Arion 630-610 C – 12.2008 – GB

27 28 29 30 31 32 33 34 35 36 37

O-ring.

Cover.

O-rings.

Hub. Belleville washers.

Bell.

Discs.

Backplate.

Cover.

Splined adjustment shim.

Circlip.

4 wheel drive unit

474msm19

(243)

16,5 ± 2,5 daN.m

(510)

0,05 ± 0,05 mm

10

(243) 11 daN.m

41

40

39

38

7

Cross sectional view of unit (with proportional power take-off)

Fig. 2

Arion 630-610 C – 12.2008 – GB

D2.3

4 wheel drive unit Cross sectional view of unit (without proportional power take-off)

1

2

26

3

29

2

5

32

33

36

4

6

37

31 14

30 28 25 24 22 23 21

20

18

19

27

34

35

9

17

15

8

13

12

11

10

474msm20

Fig. 3

Description 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15

D2.4

Sleeve.

Double pin.

Shaft.

Circlip.

Sleeve.

Pinion.

Proportional power take-off shaft.

Bronze bush.

Shim(s).

Screw.

Bush.

Sealing piston ring.

Bearing cup.

Bearing cone.

Bell gear.

16 17 18 19 20 21 22 23 24 25 26 27 28 29 30

Front axle clutch.

Cover.

Bearing cup.

Bearing cone.

Shim(s).

O-ring.

Seal carrier bushing.

Circlip.

Lip seal.

Shaft.

Circlip.

O-ring.

Cover.

O-rings.

Hub.

Arion 630-610 C – 12.2008 – GB

31 32 33 34 35 36 37 38 39 40 41 42

Belleville washers.

Bell.

Discs.

Backplate.

Cover.

Splined adjustment shim.

Circlip.

Proportional power take-off housing.

Bearing cup.

Circlip.

Proportional power take-off pinion.

Screw.

4 wheel drive unit Local manufacturing tool

.

Clutch removal tool 4 wheel drive.

Ring removal tool (Fig. 5).

Ring refitting tool (Fig. 6).

2ø7

5

=

M6

60

100

=

HM6

200

20

005fl

Fig. 4

50 M16

Ø 40

M16

Ø 45

20

Ø 68

Ø 58

HM16

=

= 22

10 6 125

10

0

0

Ø 70 – 0,2

Ø 30

320,5

Ø 41 – 0,2

Fig. 5

Ø 30 – 00,2

006fl

25

19,5 ± 0,5

375 007fl

Arion 630-610 C – 12.2008 – GB

Fig. 6

D2.5

4 wheel drive unit Removing the clutch from the power take-off unit

24

18

– Chock the tractor.

– Drain the rear axle.

– Remove the guards and the transmission shaft.

– Remove the cover (17).

Note: In the case of an axle fitted with a proportional power take-off, the control unit must be disconnected and the housing (38) removed, (Fig. 2).

– Remove the circlip (23).

– Remove the seal carrier bushing (22) using the locally made tool (Fig. 7 and 8).

– Remove the shims (20) and the cup (18).

25

– Extract the shaft (25) and bearing cone (19) assembly while supporting the clutch assembly (16) and the clutch housing (15).

22

20

474msm03

Fig. 7

– Remove the assembled clutch (16), bell pinion (15) and bearing cone (14).

13 11

– Extract the bush (11) using the locally made tool (Fig. 8 and 10).

Note: Where fitted with a proportinal power take-off, the shaft (7) must be pushed slighly out of the way towards the rear of the tractor and the bearing cup (39) and circlip (40) removed, (see chapter C "Proportional power take-off").

– Remove bearing cup (13) if required.

Remove the driving pinion (6), (Fig. 3 and 1) – To remove the gear (6), the left hydraulic cover must also be removed.

474msm04

2ø7

5

=

M6

60

100

=

HM6

Fig. 8

200

005fl

D2.6

Arion 630-610 C – 12.2008 – GB

20

Fig. 9

4 wheel drive unit 50 M16

Ø 40

M16

Ø 45

20

Ø 68

Ø 58

HM16

=

= 22

10 6 125 006fl

Fig. 10

– In the case of a tractor without crawler speeds, push out the double pins (2) of the coupling sleeves (1) and (5).

26

– Slide the sleeves towards one another on the shaft (3).

28

– Remove the shaft (3).

– Remove the circlip (4).

– Remove the pinion (6).

Note: See chapter "C" for the removal of pinion (6) on tractors fitted with crawler ranges.

Refit pinion (6) by proceeding in the reverse order.

Removing the clutch – Separate the clutch housing (15) from the clutch assembly (16).

– Remove the circlip (26).

15 474msm05

Fig. 11

– Remove the cover (28).

– Remove O-rings (27) and (29).

– Using a press and an appropriate installation, compress the Belleville washers (31).

– Remove circlip (37), the splined adjustment shim (36) and other shim(s) (9).

37

– Remove the appropriate installation.

9

36

31

474msm06

Arion 630-610 C – 12.2008 – GB

Fig. 12

D2.7

4 wheel drive unit – Remove the cover (35), the discs (33) and the backplates (34).

Note: According to the tractor reference, the hub (30), the cover (35), the Belleville washers (31), the discs (33) and the backplates (34) may differ.

– Separate the hub (30) from the housing (32).

– Remove the O-ring from the hub (30).

– Remove the Belleville washers.

– Remove the two rings (12), (Fig. 13).

– Extract the cone (19) using a press and an appropriate installation.

12

Refitting the clutch

25

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

474msm07

Fig. 13

Note: If the proportional power take-off gear (41) has been removed, tighten the screws to 11 daN.m with Loctite (243), (Fig. 2).

– Ensure that the duct of hub (30) is not blocked.

31

– Refit the Belleville washers (31) the right way round (Fig. 14).

32

– Position the hub (30) in the clutch housing (32).

– Align the holes in the discs (33), the backplates (34) and the cover (35).

Note: To assist final fitting of the clutch, align the clutch housing on the disc, backplate, cover assembly (35) using 2 guide rods (A), without refitting the circlip (37) or the shims (36) and (9), (Fig. 15).

– Remove the bell pinion.

474msm08

Fig. 14

A

15

34

474msm09

D2.8

Arion 630-610 C – 12.2008 – GB

32

Fig. 15

4 wheel drive unit Clutch adjustment – Place the clutch under the press with a suitable jig.

– Apply a force of 2 000 daN to fully compress the Belleville washers.

– Fit the circlip (37) and the splined washer (36).

– Using a set of shims, measure the space X between the cover (35) and the splined shim (36).

– Select the shim(s) (9) and the splined shim (36) to leave a play "J1" of 1 ± 0,1 mm.

34

Note: There are 2 thicknesses of splined shim (36).

32

– Remove the circlip (37).

36

37

– Position the previously selected shim(s).

Important: The splined shim (36) is fitted on the circlip side.

– Refit circlip (37), the cover (28) and circlip (26).

474msm10

Fig. 16

– Fit the clutch assembly (16) on the clutch housing (15).

36

J1 = 1 ± 0,1 mm

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

– Fabricate a locally made tool to fit bush (11), (Fig. 18).

X

37

35

10

0

0

Ø 70 – 0,2

Ø 30

320,5

Ø 41 – 0,2

Fig. 17

Ø 30 – 00,2

474msm11

25

19,5 ± 0,5

375 007fl

Arion 630-610 C – 12.2008 – GB

Fig. 18

D2.9

4 wheel drive unit – Fit the bearing cup (13) if it has been removed.

– Fit the bush (11).

4,5 ± 0,5

– Align the hole in the bush with the rear axle housing inlet port, set 4 to 5 mm back from the face of the cup (13), (Fig. 19).

11

– Check that the duct of shaft (25) is not blocked.

– Fit the bearing cone (19) on the shaft (25).

Adjusting the shaft lateral clearance – Mount the shaft (25) without shims and without the clutch (16) in the rear axle.

– Fit the seal carrier bushing (22) with the old seal and the circlip (23).

– Pull on the shaft while turning it alternately clockwise and anticlockwise to properly seat the bearings.

13

– Place a dial gauge probe at the end of the shaft.

– Push and pull on the shaft to measure the lateral play.

474msm12

Fig. 19

– Depending on the amount of play measured, select the thickness of shims (20) required to give a play "J2" of 0 to 0,10 mm.

0,05 ± 0,05 mm

25

– Remove the circlip, the seal carrier bushing and the shaft (25).

– Fit a new lip seal (24) in the seal carrier bushing (22).

– Lubricate and fit the new sealoing rings on the shaft (25).

– Fit the clutch (16) in the housing and install the shaft (25).

Note: Take all precautions to protect the new seal (24) when fitting the shaft (25).

474msm13

Fig. 20

25

0,05

± 0,05

mm

20 24 22 18 23

474msm15

D2.10

Arion 630-610 C – 12.2008 – GB

Fig. 21

4 wheel drive unit – Fit the cup (18) and shims (20) selected earler, the seal carrier bushing (22) and the circlip (23).

Note: See chapter "C" for the proportional PTO shaft (7) refitting procedure.

– Clean and degrease the housing seal face.

– Smear the parting surface with Loctite (510) and tighten the screws (10) of the cover or housing (proportional PTO) at a torque of 16,5 ± 2,5 daN.m.

Final steps – Fit the transmission shaft and guards.

– Check the rear axle oil level.

– Test front axle engagement and check for leaks from the unit.

Arion 630-610 C – 12.2008 – GB

D2.11

Notes

D2.12

Arion 630-610 C – 12.2008 – GB