Kubota tractor (BX25DLB-AU, LA240A, LA240A, AU-SG, BT602). OPERATOR'S MANUAL - part 30

89

PERIODIC SERVICE OF THE TRACTOR

EVERY 200 HOURS

B

Replacing Engine Oil Filter

To avoid personal injury:
A

Be sure to stop the engine and remove the key
before changing the oil filter cartridge.

A

Allow engine to cool down sufficiently, oil can
be hot and can burn.

1. Remove the oil filter.
2. Put a film of clean engine oil on the rubber seal of the

new filter.

3. Tighten the filter quickly until it contacts the mounting

surface.
Tighten filter by hand an additional 1/2 turn only.

4. After the new filter has been replaced, the engine oil

normally decreases a little. Make sure that the engine
oil does not leak through the seal and be sure to check
the oil level on the dipstick. Then, replenish the engine
oil up to the prescribed level.

5. Properly dispose of used oil.

A

To prevent serious damage to the engine, use only a
KUBOTA genuine filter.

B

Changing Engine Oil

To avoid personal injury:
A

Be sure to stop the engine and remove the key
before changing the oil.

A

Allow engine to cool down sufficiently, oil can
be hot and can burn.

1. To drain the used oil, remove the drain plug at the

bottom of the engine and drain the oil completely into
the oil pan.
All the used oil can be drained out easily when the
engine is still warm.

2. After draining reinstall the drain plug.
3. Fill with the new oil up to the upper notch on the

dipstick.
(See "LUBRICANTS" in "MAINTENANCE OF THE
TRACTOR" section.)

4. Properly dispose of used oil.

(1) Engine oil filter

Oil capacity with filter

3.1 L

(1) Oil inlet
(2) Dipstick

(A) Oil level is acceptable within this range

(1) Drain plug

PERIODIC SERVICE OF THE TRACTOR

90

B

Replacing Transmission Oil Filter

To avoid personal injury:
A

Be sure to stop the engine before changing the
oil filter cartridge.

A

Allow engine to cool down sufficiently, oil can
be hot and can burn.

1. Remove the oil filter.
2. Put a film of clean transmission oil on rubber seal of

new filter.

3. Tighten the filter quickly until it contacts the mounting

surface.
Tighten filter by hand an additional 1/2 turn only.

4. After the new filter has been replaced, the

transmission fluid level will decrease a little. Make sure
that the transmission fluid does not leak through the
seal, and check the fluid level.
Top up if necessary.

5. Properly dispose of used oil.

A

To prevent serious damage to the hydraulic system,
use only a KUBOTA genuine filter.

B

Checking Radiator Hoses and Clamps

To avoid personal injury:
A

Be sure to stop the engine and remove the key
before checking radiator hose and clamp.

Check to see if radiator hoses are properly secured every
200 hours of operation or 6 months, whichever comes
first.
1. If hose clamps are loose or water leaks, tighten bands

securely.

2. Replace hoses and tighten hose clamps securely, if

radiator hoses are swollen, hardened or cracked.

3. Properly dispose of used coolant.

Replace hoses and hose clamps every 2 years or
earlier if checked and found that hoses are swollen,
hardened or cracked.

C

Precaution at Overheating

Take the following actions in the event the coolant
temperature be nearly or more than the boiling point, what
is called  "Overheating".
1. Stop the machine operation in a safe place and keep

the engine idling unloaded.

2. Don't stop the engine suddenly, but stop it after about

5 minutes of unloaded idling.

3. Keep yourself well away from the machine for an

additional 10 minutes or until the steam has blown out.

4. Checking that there is no danger such as burn, get rid

of the causes of overheating according to the manual,
see "TROUBLESHOOTING" section, and then, start
the engine again.

(1) Filter

(1) Radiator hoses (2 pcs)
(2) Hose clamps (4 pcs)

91

PERIODIC SERVICE OF THE TRACTOR

B

Checking Intake Air Line

To avoid personal injury:
A

Be sure to stop the engine and remove the key
before checking intake air line.

1. Check to see that hose and hose clamps are tight and

not damaged.

2. If hose and clamps are found to be worn or damaged,

replace or repair them at once.

B

Adjusting Toe-in

1. Park tractor on a firm, flat and level place.
2. Turn steering wheel so front wheels are in the straight

ahead position.

3. Lower the implement to the ground, lock the parking

brake, stop the engine and remove the key.

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 0 to 5 mm less than rear

distance. If not, adjust tie rod length.

C

Adjusting procedure

1. Loosen the lock nut and turn the tie rod to adjust the

rod length until the proper toe-in measurement is
obtained.

2. Retighten the lock nut.

(1) Hose
(2) Hose clamp

(A) Wheel - to - wheel distance at rear
(B) Wheel - to - wheel distance at front
(C) "FRONT"

(1) Lock nuts
(2) Tie rod

PERIODIC SERVICE OF THE TRACTOR

92

B

Checking Power Steering Line

To avoid personal injury:
A

Be sure to stop the engine and remove the key
before checking power steering line.

1. Check to see that all lines are tight and not damaged.
2. If hoses are found to be worn or damaged, replace or

repair them at once.

EVERY 400 HOURS

B

Adjusting Front Axle Pivot

If the front axle pivot pin adjustment is not correct, front
wheel vibration can occur causing vibration in the steering
wheel.

C

Adjusting procedure

Remove the split pin, tighten the adjusting nut (tightening
torque 20 N-m, 2.0 kgf-m), then make sure that one of the
nut slots aligns with the split pin hole, tighten the nut
slightly if necessary to align. Replace the split pin. 

B

Changing Transmission Fluid

To avoid personal injury:
A

Allow engine to cool down sufficiently, oil can
be hot and can burn.

1. To drain the used oil, remove the drain plug at the

bottom of the transmission case and drain the oil
completely into the oil pan.

2. After draining reinstall the drain plug.
3. Clean the transmission strainer.
4. Fill with new KUBOTA SUPER UDT fluid up to the

upper notch on the dipstick.
(See "LUBRICANTS" in "MAINTENANCE OF THE
TRACTOR" section and "DAILY CHECK" in
"PERIODIC SERVICE OF THE TRACTOR" section.)

5. After running the engine for a few minutes, stop it and

check the oil level again, add oil to prescribed level.

6. Properly dispose of used oil.

(1) Power steering pressure hose

(1) Adjusting nut
(2) Split pin

Oil capacity

11.6 L