Kubota L4400 Manual

TO THE DEALER

1. This manual contains procedures intended to assistthe dealer in unpacking and assembling the product before delivering to the customer.
   The customer's purchase is based on confidence in both the product and your store. Observe the procedures in this manual to assemble and adjust equipment for your customer's safety and satisfaction. When fully assembled, check function of each part and feature.
2. The following safety alert symbol marks andindications are found throughout this manual in steps where particular attention is required so as to ensure your safety and to avoid product damage. Observe the instructions in these warnings where indicated.

	Indicates an imminently hazardous situation which, if not avoided, will result in death or serious injury.
	Indicates a potentially hazardous situation which, if not avoided, could result in death or serious injury.
	Indicates a potentially hazardous situation which, if not avoided, may result in minor or moderate injury.
	Indicates that equipment or property damage could result if instructions are not followed.
NOTE:	Gives helpful information

CONTENTS OF THE CRATE

Locations and Removal of Parts in the Crate
Tools required
Spanner (14mm) or socket with impact wrench, Nipper, Belt sling.

1. Check the exterior parts and accompanying accessories for scratches and other problems.
   
   • Remove bolts and wires as marked by arrows in the photo below.
2. Remove the plastic cover.
3. ROPS under frame RH and LH (7) or ROPS frame RHand LH (8) is just little hung up with belt sling.
   
   • Remove a bolt [A] when you separate ROPS from the tractor.
   • Be careful, the ROPS frames are fixed on the front side of the packing.
     [For foldable type ROPS]
4. Remove the upper frame (1).
5. Remove the left frame (2).
   
   1. Upper frame
   2. Left frame

7. ROPS under frame RH and LH

9. ROPS upper frame

6. Remove the front frame (5).
7. Remove the right frame 1 (3) and right frame 2 (4).
8. Remove the rear frame (6).
   
   3. Right frame 1
   4. Right frame 2
   5. Front frame
   6. Rear frame

[Four prop type]

1. Remove the bolts (1) and angle bar (2).
   
   1. Bolts
   2. Angle bar
2. Remove the props (3) by moving back and forth them.
   
   3. Props

2. Remove the plastic cover (4).
   
   4. Plastic cover

9. Remove the ROPS under frame RH and LH (7).
   
   7. ROPS under frame RH and LH

10. Bumper (For 2WD)
11. Front wheel hub LH (For 2WD)
12. Front wheel hub RH (For 2WD)
13. Belt slings

[For rigid type ROPS]

4. Remove the upper frame (1).
5. Remove the left frame (2).
   
   1. Upper frame
   2. Left frame

8. ROPS frame RH and LH

3. Right frame 1
4. Right frame 2
5. Front frame
6. Rear frame

8. ROPS frame RH and LH

13. Belt slings

14. Carton box 1
15. Carton box 2 (For rigid type ROPS only)
16. Carton bag
17. Steering wheel
18. Seat
    
19. Carton box 3 (For rigid type ROPS)
20. Lower link assemblies, Stabilizer assemblies (RH & LH) and Drawbar
21. Top link assemblies
22. Yoke shaft RH (For 4WD)
23. Joint pin and set pin
24. Set pin
25. Snap ring and lift rod pin

9. ROPS upper frame (For foldable type ROPS)

19. Carton box 3 (For foldable type ROPS)
20. Lower link assemblies, Stabilizer assemblies (RH & LH) and Drawbar
21. Top link assemblies

11. Check the paper bags in the toolbox.
    
    26. Paper bag 1
    27. Paper bag 2
    28. Paper bag 3 (For 4WD)
12. Check the attached parts as shown in the photo below.
    
    29. Bevel gear case assembly RH (For 4WD)

Parts in the Carton Box and Paper Bag

1. L4400 (2WD),
2. L4400 (4WD)

2. Open the carton box 1 and check the contents.
   

1. L4400 (2WD),
2. L4400 (4WD)

[ROPS Parts] (For foldable type ROPS)

1. L4400 (2WD),
2. L4400 (4WD)

3. Open the carton box 2 and check the contents.
   [For rigid type ROPS]
   

1. L4400 (2WD),
2. L4400 (4WD)

1. L4400 (2WD),
2. L4400 (4WD)

5. Remove the parts in the tractor toolbox and check thecontents.
   
   1. L4400 (2WD),
   2. L4400 (4WD)

6. Open the carton bag and check the contents.
   

1. L4400 (2WD),
2. L4400 (4WD)

TIGHTENING TORQUE OF BOLTS AND NUTS

1. General screws, bolts and nuts.
   Screws, bolts and nuts should be tightened according to the table shown below.

2. Stud bolts.
   Stud bolts used in front and rear axle hubs should be tightened according to the table shown below.

   M14 (14 mm, 0.55 in.)	N-m kgf-m ft-lbs	63.7 to 73.5 6.5 to 7.5 47.0 to 54.2
   M16 (16 mm, 0.63 in.)	N-m kgf-m ft-lbs	98.1 to 113.0 10.0 to 11.5 72.3 to 83.2

Stud bolts should be inserted so that side [A] (flat side) is towards the inside and [B] (round side) is towards the outside of the axle hub.

1. [Flat]
2. [Round]

ASSEMBLING OF TRACTOR

Seat
Tools required
Spanner (12mm) or socket with impact wrench or wrench.

1. Assemble the seat brackets (3)(4) to the seat slightly.
   
   NOTE
   Use holes of front side on seat brackets (3)(4) when assembling them.(Refer to photo above)
   1. Seat
   2. Flange bolts (M8-16)
   3. Seat bracket, LH
   4. Seat bracket, RH

2. Install the seat cushion (5) to seat support.
   
   5. Seat cushions
3. Install the seat to seat support, using the pin (6) and the spring pin (7).
4. Tighten the flange bolts (2) firmly.
   
   2. Flange bolts (M8-16)

6. Pin
7. Spring pin

ROPS
[For rigid type ROPS]
Tool required
Pliers, socket (19mm, 21mm) with impact wrench or wrench and torque wrench, belt sling.

1. Remove the plugs (1) of the rear axle case as marked by arrow in photo below.
   1. Plugs
2. Insert the ROPS connector (4) of the ROPS frame LH (2) and RH (3) as show in the photo below. Tighten the bolts (5) slightly.
   Tightening torque

   ROPS connecting bolt (5)	149.0 to 179.0 N-m
   (9/16 UNF-1 1/4)	15.2 to 18.3 kgf-m 110.0 to 132.0 ft-lbs

   2. ROPS frame LH
   3. ROPS frame RH
   4. ROPS connector
   5. Bolts (9/16 UNF-1 1/4)
   6. Spring washers (9/16)
3. Hang up the ROPS assembly with belt sling.
   
   To avoid personal injury:
   Use the hoist and belt sling to install the ROPS frame to the tractor for safety working.
   
   7. ROPS assembly
4. Attach the ROPS to the rear side of the axle cases with the bolts (8)(10) temporarily.
   
   8. Bolts (M14-30)
   9. Spring washers (M14)
   10. Bolts (M12-30)
   11. Spring washers (M12)
   12. Plain washers (M12)
5. All the bolts of ROPS are tightened with the torque of prescription.

Make sure to tighten the ROPS mounting bolts with correct tightening torque for safety reason.

Tightening torque

[For foldable type ROPS]
Tools required
Pliers, socket (19mm, 24mm) with ratchet wrench and torque wrench, spanner (26mm) and socket with torque wrench, belt sling.

1. Remove the plugs of the rear axle case as marked by arrow in photo below.
   
   1. Plugs
2. Install the ROPS lower frames LH (2) and RH to the tractor with the mounting bolts. Tighten the mounting bolts (3) slightly.
   
   To avoid personal injury:
   Use the hoist and belt sling to install the ROPS frame to the tractor for safety working.
   
   2. ROPS lower frame LH
   3. Bolts (M14-30)
3. Install the ROPS upper frame (4) to the lower frames (5) with hanging up by the belt sling. After that into the lock bolts (6) to the lower holes as shown in the photo below (portion A).
   
   4. ROPS upper frame
   5. ROPS lower frames
   6. Lock bolts
4. Insert the pivot pins to lower frame hole (portion B) asshown photo above.
5. Put in the plain washers (7) between upper frame (4) and lower frame (5) as shown in the photo below. Tighten the nut of pivot pins (8) slightly.
   
   4. ROPS upper frame
   5. ROPS lower frame
   6. Lock bolt
   7. Plain washers
   8. Pivot pin
6. All the bolts of ROPS are tightened to prescribe torque.
   

• Make sure to tighten the ROPS mounting bolts with correct tightening torque for safety reason.
• After tightening the pivot pin (LH and RH), check the ROPS upper frame moves smoothly by hands as shown in photo below. Check that does not free fall of the ROPS upper frame.
  Tightening torque

  ROPS set bolt (3)	166.7 to 196.1 N-m 17.0 to 20.0 kgf-m 123.0 to 144.0 ft-lbs
  Castle nut of pivot pin (11)	118.0 to 137 N-m 12.0 to 14.0 kgf-m 97.0 to 100.0 ft-lbs

  
  To avoid personal injury:
• Adjust free fall after confirming that no bystanders are nearby.
• Sudden movement may occur as a result of improper adjustment.
  

7. Insert the split pin (9) to the castle nuts (11) of pivotpins. Bend the split pin certainly as shown figure below.
8. Insert the snap pin (10) in the lock bolt (6).
   
   6. Lock bolt
   7. Plain washer
   8. Pivot pin
   9. Split pin
   10. Snap pin
   11. Castle nut

9. Split pin

11. Castle nut

Three Point Hitch
Tool required
Pliers, socket (14mm) with ratchet wrench and torque wrench.

1. Install the lower link assemblies (3) with the lower link pivot pins (2) and tighten the bolts (1) on both sides.
   
   1. Bolt (M10-20)
   2. Lower link pivot pin
   3. Lower link assemblies
      
   • Make sure to tighten the lower link pivot pin mounting bolts with correct tightening torque to prevent the case from cracking.
     Tightening torque

     Lower link pivot pin bolt (1)

     48.1 to 55.8 N-m 4.9 to 5.7 kgf-m 35.5 to 41.2 ft-lbs

2. Connect the lift rod (4) to the lower link assemblies (3) using the joint pins and the snap rings (5) from outside to inside on both sides.
   
   3. Lower link assembly
   4. Lift rod
   5. Snap ring

6. Stabilizer assembly
7. ROPS
8. Bolt
9. Nut

• Tighten the lock nut until the nut face comes into contact with the stabilizer's U bracket.
• Then check to see if the stabilizer's turns smoothly.

Hazard and Tail Light on Both Side
Tool required
Spanner (14mm), screw driver (+)

1. Set the hazard light (1) to the correct direction andtighten the nut (2) under the fender.
2. Attach the tail light (3) to the fender on both sides.
   
   1. Hazard light
   2. Nut
      

1. Hazard light

3. Tail light

2. Nut
3. Tail light
4. Screws
5. Cord clamp

8. 1P coupler
9. 4P coupler

3. Insert wire harness (6) in the clamp points (7) of the fender as shown in photo below.
   
   6. Wire harness
   7. Clamp point

1. Hazard light

1. Cup holder

Front Axle

To avoid personal injury:

• After attaching the jig bumper to the front axle frame, lift the jig bumper with belt sling (over 2 tons capacity).
• Hang up the belt on the center of the jig bumper to balance the tractor.
• Use the hoist for over 2 tons (4000 lbs) capacity.
• Place the safety stand (over 2 tons capacity) under the rear axle cases after lifting the tractor.
• Make sure to place the safety stands under the rear axle cases before starting next jobs.

Tool required
Spanner (17mm) socket (14mm, 17mm, 19mm) with ratchet wrench or impact wrench and torque wrench or impact wrench and torque wrench, belt sling, safety stands.
Please prepare the stud bolt (M14-1.5) or guides.

1. Remove the bolt (1) and the retainer (2).
   
   1. Bolt
   2. Retainer
2. Install guide studs (3) by hand. Do not tighten securely to [B] portion.
   
   3. Guide studs
3. Put the jig bumper (4) on the front frame though theguide studs and then set two bolts (5) while holding the jig bumper.
4. Remove two guide studs (3) and then install two bolts (5) on the jig bumper (4).
   
   4. Jig bumper
   5. Bolts
5. Lift the jig bumper (4) by hoist with belt sling (6).
   
   4. Jig bumper

6. Belt slings

6. Make sure the front axle lean like the photo.
   
7. Support the jig bumper (4) with the two safety stands(7).
   
   4. Jig bumper

7. Safety stands

[For 4WD]
Tool required
Pliers, socket (19mm, 22mm), stud bolt installation tools (14mm) with ratchet wrench or impact wrench and torque wrench.

8. Remove the cover (8) and gasket (9) from the front axle case. (10)
   
   8. Cover
   9. Gasket
   10. Front axle case
       
       Do not throw bolts. Those bolts are used for installing the bevel gear case assembly to the front axle case.

9. Install the yoke shaft (11) into the front axle case (12).
   
   11. Yoke shaft
   12. Front axle case
10. Remove the bevel gear case assembly RH (13) from the base.
11. Remove the cover (14) from the bevel gear case assembly RH (13)
    
    13. Bevel gear case assembly RH
    14. Cover
        
    • To apply grease to the O ring, just as there is not damage in the O ring.
    • Take care not to damage the O ring at the bevel gear case assembly RH insertion.
12. Install two stud bolts of the front axle by hand as the guide to the [C] portions. Do not tighten securely.
13. Install the bevel gear case assembly RH (13) to the front axle case (12).
    

14. Remove two stud bolts from[C] portions. Install the bolts and tighten them up alternately to become equal in (four) bolts without damaging the O ring.
    
15. Tighten all bolts with correct torque. Refer to below.
    Tightening torque

    Front axle case bolt

    124.0 to 147.0 N-m 12.6 to 15.0 kgf-m 91.2 to 108.0 ft-lbs

    
    After assembling the tractor, starting the engine for checking the oil leak from front axle case.

16. Install the tie-rod (15) to tie rod joint (16).
    
    15. Tie-rod end
    16. Tie-rod joint
17. Set the tie rod (15) to the bevel gear case assembly RH (13).
    
    13. Bevel gear case assembly RH

19. Split the split pin (18) securely as shown in the figure below.
    
    17. Castle nut
    18. Split pin

17. Castle nut
18. Split pin

21. Attach the cylinder cover (20).
22. Tighten the bolts (21).
23. Install and tightening stud bolts (22) to bevel gear case LH.
    
    20. Cylinder cover
    21. Bolts
    22. Stud bolt

Tighten the flat surface [A] of the stud bolt into the hub.

1. [Flat]
2. [Round]

Tightening torque

[For 2WD] C Tool required
Pliers, socket (14mm, 17mm, 19mm) with ratchet wrench or impact wrench and torque wrench.

8. Remove the front wheel hub RH and LH on the base.
9. Install the front wheel hub RH and LH to the center front axle.
   
   8. Front wheel hub
   9. Center front axle
10. Put the bolts (10), collars (11), spring washers (12), and nuts (13).
    
    10. Bolts (M14-95)

10. Bolts (M14-95)
11. Collars
12. Spring washers (M14)
13. Nuts (M14)

12. Attach the tie rod end RH and LH (14).
13. Tighten the bolt and nut (15).
14. Set the tie rod through the knuckle arm (16) on both side.
15. Tighten up a castle nut (17) and set the split pin (18).
    
    14. Tie rod end LH
    15. Bolt and nut
    16. Knuckle arm
    17. Castle nut
    18. Split pin

17. Castle nut
18. Split pin

Tightening torque

16. Attach the cylinder cover (19).
17. Tighten the bolts (20).
    
    19. Cylinder cover
    20. Bolts

Hoisting Tractor

To avoid personal injury:

• After attaching the three point linkage to the tractor body, lift both lower links with two belt sling. (over 2 ton capacity)
• Place the safety stands (over 2 ton capacity) under the rear axle cases after lifting the tractor.
• Make sure to place the safety stands under the rear axle cases before starting next jobs.

Tool required
Belt sling, safety stands

1. Lift the rear side of the tractor with the belt slings (2).
   
   1. Lower links
   2. Belt slings
2. Set the jig casters (3) to the crate base (4).
3. Pull out the crate base (4) from the tractor.
   
   3. Jig casters
   4. Crate base
4. Support the rear axle case with the safety stands (5) as shown in photo below.
   
   5. Safety stands

Rear Wheel
Tool required
Socket (22mm, 24mm), stud bolt installation tools (16mm) with impact wrench, torque wrench, belt sling.

1. Install the stud bolts (1) to the rear axle (2).
   
   1. Stud bolts
   2. Rear axle
      Tighten the flat surface [A] of the stud bolts into the hub.
      
      1. [Flat]
      2. [Round]
         Tightening torque

         Stud bolt

         98.1 to 112.8 N-m 10.0 to 11.5 kgf-m 72.3 to 83.2 ft-lbs

2. Install the right and left rear wheels to the tractor with the nuts and spring washers.
   
   3. Nuts
   4. Rim nuts
      
      Make sure to tighten the rear wheels mounting nuts with correct tightening torque for safety reason.
      Tightening torque
      Rear wheel
      Rim and disk mounting nuts (3)(4)
      196.0 to 225.0 N-m
      20.0 to 23.0 kgf-m
      145 to 166 ft-lbs
3. Lift the tractor on rear side, and remove the safetystands and hang down the tractor.
   
4. Set the chocks under the front and rear side of rearwheels to prevent from revolving.
   
   5. Chocks

Fasten up the bolts and nuts at the torque of the specifications.

Front Wheel
Tool required
Socket (19mm, 22mm), and extension bar with impact wrench, torque wrench, belt slings.

1. Install the right and left front wheels to the tractor with the tapered side of lug nut.
   
   Tightening torque

   Front wheel mounting nut

   124.0 to 147.0 N-m 12.6 to 15.0 kgf-m 91.2 to 108.0 ft-lbs

[For 2WD]

• Use the tapered side of lug nut, if the tractor mounts front wheel with beveled or tapered holes.
• Use the spring washers, plain washers and flat side of lug nuts, if the tractor mounts front wheel without tapered holes.
  
  NOTE:
  Do not use the spring washers and plain washers, if the tractor mounts front wheels with beveled or tapered hole.

2. Lift the tractor on front side with jig bumper and remove the safety stands then hang down the tractor.
   
   1. Jig bumper
3. Fasten up the nuts at the torque of the specifications
   
   
   Make sure to tighten the front wheels mounting nuts with correct tightening torque for safety reason.
4. Remove lower two bolts (2) on the jig bumper (1). Next set the two guide studs (3).
   
   1. Jig bumper
   2. Bolts
   3. Guide studs
5. Support the jig bumper (1) and remove upper two bolts (2).
   
   1. Jig bumper
   2. Bolts
6. Remove the jig bumper.

[For 2WD]

1. 7. Attach the bumper (4).
   
   2. Bolts

4. Bumper

Battery Cable
Tool required
Spanner (10mm) or socket with ratchet wrench.

1. Open the hood.
2. Take the adhesion tape (1) of the negative terminal.
   
   1. Adhesion tape
   2. Battery
3. Connect the negative cord (3) to the negative terminal (4) and then tighten the bolt.
   
   3. Negative cord
   4. Negative terminal
4. Close the hood.

SMV Plate
Tool required
Spanner (11mm, 13mm) or socket with ratchet wrench and screwdriver.

1. Attach SMV socket (1) to the fender support.
   
   1. SMV socket
   2. Square neck bolts
   3. Nuts and spring washers
2. Assembling the SMV sign (4).
   
   4. SMV sign

6. Screws
7. SMV bracket
8. Nuts

3. Attach the SMV sign assembly (5) to the SMV socket (1).
   
   1. SMV socket

5. SMV sign assembly

Drawbar
[4WD: Standard, 2WD: Option]

1. Install the drawbar (1) to the drawbar frame (2), using the joint pin (3) and snap pin (4).
   
   1. Drawbar
   2. Drawbar frame
   3. Joint pin
   4. Snap pin

Steering Wheel
Tool required
Socket (17mm), extension bar with torque wrench.

1. Attaching the steering wheel as shown in the photobelow.
2. Install the steering wheel (1), spring washer (2) andnut (3) (Tighten the steering nut).
   
   1. Steering wheel
   2. Spring washer (M12)
   3. Nut (M12)
      Tightening torque
      Steering Nut (3)
      48.0 to 55.9 N-m
      4.9 to 5.7 kgf-m
      33.5 to 41.2 ft-lbs
3. Install the steering cap (4).
   
   4. Steering cap

CHECKING OF BATTERY

To avoid personal injury:

• Never remove the vent plugs while the engine is running.
• Keep electrolyte away from eyes, hands and clothes. If you are spattered with it, wash it away completely with water immediately and get medical attention.
• Wear eye protection and rubber gloves when working around the battery.

Battery Checking
Mishandling the battery shortens the service life and adds to maintenance costs.
The original battery is maintenance free, but needs some servicing.
If the battery is weak, the engine will be difficult to start and the lights will be dim. It is important to check the battery periodically.

1. Battery
2. Indicator

How to read the indicator
Check the battery condition by reading the indicator (2).

Battery Charging

To avoid personal injury:

• When the battery is being activated, hydrogen and oxygen gases in the battery are extremely explosive. Keep open sparks and flames away from the battery at all times, especially when charging the battery.
• When charging the battery, ensure the vent caps are securely in place. (if equipped)
• When disconnecting the cable from the battery, start with the negative terminal first. When connecting the cable to the battery, start with the positive terminal first.
• Never check battery charge by placing a metal object across the posts. Use a voltmeter or hydrometer.

1. Battery

[Table 1]

CHECKING AND ADJUSTMENT

Toe-In Checking

1. Park tractor on a flat place.
2. Turn steering wheel so front wheels are in the straightahead position.
3. Lower the implement, lock the park brake and stop theengine.
4. Measure distance between tire beads at front of tire, hub height.
5. Measure distance between tire beads at rear of tire, hub height.
6. Front distance should be 2 to 8 mm (1/16 to 5/16 in.) less than rear distance. If not, adjust tie rod length.
   
   1. Wheel - to - wheel distance at rear
   2. Wheel - to - wheel distance at front
   3. "FRONT"

Toe-In Adjustment
Adjusting procedures

1. Detach the snap ring.
2. Loosen the tie-rod nut.
3. Turn the tie-rod joint to adjust the rod length until the proper toe-in measurement is obtained.
4. Retighten the tie-rod nut.
5. Attach the snap ring of the tie-rod joint.

[4WD]

[2WD]

1. Snap ring
2. Tie-rod nut
3. Tie-rod joint

Tightening torque
[4WD]

[2WD]

JIG KIT FOR ASSEMBLY

(Whole Goods Number L8499) (Jig Kit Number TA150-98341)

1. JIG BUMPER
   
2. STUD, GUIDE
   
3. CASTER ASSY (SWIVEL)
   
4. CASTER ASSY (RIGID)
   

ESTIMATED ASSEMBLY TIME

Refer to the following table for the estimated assembly time to open the crate and assemble the tractor.

(hour)

Assembly times on the table are just reference under the average conditions with following assumption.

1. Assembly by one worker.
2. Following tools and equipment are prepared.
   1. Chain hoist or Crane
   2. Safety stand
   3. Sling belt
   4. Jig bumper and Jig casters
   5. Impact wrench
      Ratchet wrench
      Torque wrench
      Socket wrench and other required tools.

CHECK LIST FOR INSPECTION AFTER ASSEMBLY