Kubota tractor (BX25DLB-AU, LA240A, LA240A, AU-SG, BT602). OPERATOR'S MANUAL - part 33

101

MAINTENANCE OF THE BACKHOE

LUBRICATION

Lubricate all grease fittings every 10 hours of operation.
High quality grease designated "extreme pressure" and
containing Molybdenum disulfide is recommended. This
grease may specify "Moly Ep" on its label.

BUCKET SERVICE

To avoid personal injury:
A

When servicing or repairing pins in cylinder
ends, bucket, etc., always use a brass drift and
hammer. Failure to do so could result in injury
from flying metal fragments.

Changing the Backhoe Bucket

Changing the backhoe bucket becomes necessary as the
type of job to be accomplished changes. In most backhoe
operations, this is a common occurrence.
By using the following instructions, this job will be quick
and easy. Always select a smooth level area to change
buckets.
Place the bucket to be installed on its bottom, near the
backhoe dipperstick and the bucket to be removed.
Position the bucket to be removed, hydraulically, into this
"NATURAL" position, just touching the ground.

Changing the Bucket Teeth

The bucket teeth are locked with bolts on the bucket. Even
though the teeth are heat-treated and hard, they will
eventually need replacement. As the teeth become worn,
the resistance of digging will increase. When the teeth are
worn, install new teeth using new bolts.
Bucket teeth may be removed and stored when drainage
work is required. This type of work may not require
trenching teeth.

(1) Bucket
(2) Bucket teeth
(3) Bolt

MAINTENANCE OF THE BACKHOE

102

General torque specification

American standard cap screws

with UNC or UNF threads

Metric cap screws

SAE grade No.

GR5 or GR8

Property class

8.8

Approx. SAE GR5

1/4

(N-m)

(kgf-m)

9.8 to 11.7

1.0 to 1.2

(N-m)

(kgf-m)

9.8 to 11.2

1.0 to 1.1

5/16

(N-m)

(kgf-m)

19 to 23.1

1.9 to 2.4

(N-m)

(kgf-m)

23.6 to 27.4

2.4 to 2.8

3/8

(N-m)

(kgf-m)

33.9 to 40.7

3.5 to 4.2

M10

(N-m)

(kgf-m)

48.1 to 55.8

4.9 to 5.7

1/2

(N-m)

(kgf-m)

88.1 to 105.8

9.0 to 10.8

M12

(N-m)

(kgf-m)

77.5 to 90.1

7.9 to 9.2

9/16

(N-m)

(kgf-m)

122 to 146.4

12.4 to 14.9

M14

(N-m)

(kgf-m)

124 to 147

12.6 to 15.0

5/8

(N-m)

(kgf-m)

176.3 to 211.5

18.0 to 21.6

M16

(N-m)

(kgf-m)

196 to 225

20.0 to 23.0

Top of bolt

Length

103

STORAGE OF THE TRACTOR

STORAGE OF THE TRACTOR

To avoid personal injury:
A

Do not clean the machine while the engine is
running.

To avoid the danger of exhaust fume
poisoning, do not operate the engine in a
closed building without proper ventilation.

When storing, remove the key from the key
switch to avoid unauthorized persons from
operating the tractor and getting injured.

TRACTOR STORAGE

If you intend to store your tractor for an extended period
of time, follow the procedures outlined below. These
procedures will insure that the tractor is ready to operate
with minimum preparation when it is removed from
storage.
1. Check the bolts and nuts for looseness, and tighten if

necessary.

2. Apply grease to tractor areas where bare metal will

rust also to pivot areas.

3. Detach the weights from the tractor body.
4. Inflate the tires to a pressure a little higher than usual.
5. Change the engine oil and run the engine to circulate

oil throughout the engine block and internal moving
parts for about 5 minutes.

6. With all implements lowered to the ground, coat any

exposed hydraulic cylinder piston rods with grease.

7. Remove the battery from the tractor. Store the battery

following the battery storage procedures.
(See "Battery" in "EVERY 100 HOURS" in "PERIODIC
SERVICE OF THE TRACTOR" section.)

8. Keep the tractor in a dry place where the tractor is

sheltered from the elements. Cover the tractor.

9. Store the tractor indoors in a dry area that is protected

from sunlight and excessive heat. If the tractor must be
stored outdoors, cover it with a waterproof tarpaulin.
Jack the tractor up and place blocks under the front
and rear axles so that all 4 tires are off the ground.
Keep the tires out of direct sunlight and extreme heat.

When washing the tractor, be sure to stop the engine.
Allow sufficient time for the engine to cool before
washing.

Cover the tractor after the muffler and the engine have
cooled down.

REMOVING THE TRACTOR FROM

STORAGE

1. Check the tire air pressure and inflate the tires if they

are low.

2. Jack the tractor up and remove the support blocks

from under the front and rear axles.

3. Install the battery. Before installing the battery, be sure

it is fully charged.

4. Check the fan belt tension.
5. Check all fluid levels (engine oil, transmission/

hydraulic oil, engine coolant and any attached
implements).

6. Start the engine. Observe all gauges. If all gauges are

functioning properly and reading normal, move the
tractor outside. Once outside, park the tractor and let
the engine idle for at least 5 minutes. Shut the engine
off and walk around tractor and make a visual
inspection looking for evidence of oil or water leaks.

7. With the engine fully warmed up, release the parking

brake and test the brakes for proper adjustment as you
move forward. Adjust the brakes as necessary.

104 REMOVING THE LOADER

REMOVING THE LOADER

To avoid personal injury:
A

Make sure an approved bucket is attached
before removing the loader from the tractor.

For removing the loader, choose flat and hard
ground, preferably concrete.

If the ground surface is soft, place suitable
planks on the ground for the bucket and stand.

When starting the engine or using the loader
control lever, always sit in the operator's seat.

Make sure the bucket and stand are at ground
level.

1. Raise the boom until the stand can be rotated.
2. Stop the engine.
3. Remove the spring pin holding the stand to the boom.
4. Slide the stand leftward and rotate it until the hole in

the stand and pin on the boom are aligned.
Then slide the stand rightward and insert the spring pin
as shown.

5. Start the engine and run at idle.
6. Dump the bucket approximately 20 degrees.
7. Lower the boom and raise the front wheels slightly.

Lift the front wheels with the bucket. Do not attempt to
lift them with the stand.

8. Stop the engine.
9. Remove the mounting pins from the loader side frame

and retain them in the plate of side frame.

(1) Stand
(2) Spring pin

(1) Stand

(1) Mounting pin

Content .. 31 32 33 34 ..