Kubota LA525 User manual

ASSEMBLY
INSTRUCTIONS
MODEL LA525
READ AND UNDERSTAND THIS MANUAL
BEFORE ASSEMBLING
Code No. 7J294-6915-3 English (U.S.A.)
AX. L. 3-3 . -. K
PRINTED IN U.S.A. © KUBOTA Corporation 2013
1AIABEFAP0280

CONTENTS
ASSEMBLY INSTRUCTIONS ..................................................................................... 1
TO THE DEALER..................................................................................................... 1
SAFETY ................................................................................................................... 1
UNPACKING AND CHECKING PARTS .................................................................. 2
Unpacking Wooden Crate................................................................................................. 2
Checking Parts .................................................................................................................3
TRACTOR PREPARATION ..................................................................................... 4
BEFORE ASSEMBLY .............................................................................................. 4
ASSEMBLING LOADER KIT ................................................................................... 5
Boom Assembly................................................................................................................ 5
Main Frame....................................................................................................................... 6
Hydraulic Line ................................................................................................................... 7
Front Guard ...................................................................................................................... 8
Level Indicator (Option) .................................................................................................. 10
PRE-OPERATION CHECK.................................................................................... 11
Lubrication ...................................................................................................................... 11
Transmission Fluid.......................................................................................................... 11
Hydraulic Hose ............................................................................................................... 11
ESTIMATED ASSEMBLY TIME............................................................................. 12
TIGHTENING TORQUE OF BOLTS AND NUTS .................................................. 13

1ASSEMBLY INSTRUCTIONS
ASSEMBLY INSTRUCTIONS
TO THE DEALER
1. This manual contains procedures intended to assist
the 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 and
indications 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.
SAFETY
To prevent accidents, read through the following items
before starting work, and always regard safety when
working. It is your responsibility to ensure your safety on
the job.
1. Preparations
(1) Select a work site which is level, has sufficient
space, and is not close to dangerous objects.
(2) Avoid poorly ventilated
rooms.
Asphyxiation from exhaust
fumes is always a possibility
that accompanies running an
engine.
(3) Working clothes which may
be pinched or caught in the
equipment must not be worn.
Loose clothing can cause
serious injury or death.
(4) Always wear a mask and
protective goggles during
work when dust or flying
debris may be thrown by
equipment.
2. Assembly and adjustments
(1) Before assembling
equipment, read the
assembly instructions for the
product to become familiar
with the equipment and
procedures.
(2) Use only adequate and
required equipment, tools
and instruments (e.g. torque
wrench, battery hydrometer
and etc.).
(3) Set the parking brake and
block wheels to prevent
machine (or tractor)
movement.
(4) Lower the attachment or
implement to the ground
before assembling or
adjusting equipment.
(5) Before working under
suspended or raised
equipment, support the
equipment or attachment
and utilize the valve lock to
prevent the machine from
falling or moving out of place.
(6) Keep fire from cigarettes,
matches or other ignition
sources away from fuel, oil,
antifreeze and other
flammable materials.
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, could result in minor or
moderate injury.
Indicates that equipment or
property damage could result if
instructions are not followed.
Gives helpful information

ASSEMBLY INSTRUCTIONS2
3. After assembly check
(1) Before operating or test driving the equipment,
read and understand the operator's manual.
(2) Once the equipment is fully
assembled, select a safe
place for a test run. Prevent
onlookers from approaching
the equipment.
To avoid personal injury or
death:
ADo not start engine or
operate levers from
anywhere other than the
seat.
To avoid personal injury:
ADo not bypass-start the
equipment. Short circuiting
the starter terminal runs the
risk that the equipment will
start operating or moving
unexpectedly.
UNPACKING AND CHECKING PARTS
BUnpacking Wooden Crate
1. Cutting metal bands (if two are banded together).
Metal bands hold the two crates together as one. Cut
these bands and separate the crates.
2. Unpacking the crates
(1) Hook a hoist to the 4 corners of the crate and raise
the hoist cable until taut.
This serves to prevent the upper part of the crate
from striking the loader when cut.
(2) Saw the crate as indicated in figure 1.
ASawing outside the indicated area may damage the
loader or accessory parts.
ABe sure that the crate is free of other obstructions (e.g.
nails, staples and etc.).
(3) Raise the upper part of the crate and remove from
the immediate area.
(4) Remove the remaining slats from the crate. These
are indicated by the oblique lines in
Figure 1...

3ASSEMBLY INSTRUCTIONS
BChecking Parts
Remove all loader components. Referring to the illustration, insure that all components have been included.
(1) Bucket
(2) Boom assembly
(3) Main frame LH
(4) Main frame RH
(5) Front guard
(6) Control valve assembly
(7) Hydraulic block
(8) Parts box
(9) Level indicator (Option)
(10) Quick attach coupler
(LA525FL : Option /
LA525 : Standard)

ASSEMBLY INSTRUCTIONS4
TRACTOR PREPARATION
1. Remove the mid mount mower from the tractor if
equipped.
2. Locate the tractor on a firm level surface.
Lower the implement to the ground, set the parking
brake and stop the engine.
3. Set front tread as follows.
ASetting tread wider than recommended may cause
premature failure of front axle components due to
excessive stress.
4. For better stability, set the rear tread as follows
depending on the requirements of the work being
done.
BEFORE ASSEMBLY
ABefore assembling the hardware (bolts, adapters,
hoses, etc.), ensure all contaminates (grease, grit,
dust, etc.) are removed from the threads and all mating
surfaces (Tractor, Main Frames, etc.). If oil or
contamination has adhered, clean off thoroughly
before assembling (by using contact cleaner,
scrapers, etc.). If oil or contamination remains on the
threads, it may lead to damaged threads and the
loosing of hardware and/or parts.
AFor the tightening torque, see the tables at the end of
this manual. If the torque values are specified in the
text, follow that specification.
ADo not tighten any bolts firmly until most components
are attached to the tractor.
ABefore tightening all mounting hardware, start the
engine and apply down pressure with the bucket until
the loader takes the tractor weight off the front wheels
without lifting the front wheels off of the ground. Make
sure that the mounting pins can be rotated easily (Pin
on mount), or the Swift-Tach hooks can be unlocked
easily (Swift-Tach mount). Torque all bolts and nuts in
this position.
ADuring assembly of all hydraulic parts make sure parts
remain clean of contamination. If contamination
occurs it could affect the performance of the hydraulic
system.
AWhen using the tapered adapters, wrap the seal tape
around the thread part 2 or 3 times. At this time,
ensure all contaminates are removed from the
threads.
ATo avoid damage to hoses, adjust all connections to
route hoses away from sharp edges and do not twist
hoses.
AThe part number of the hose is marked on the hose
fitting, or located on the hose.
AWhen fixing the pin with the bolt and nut, do not tighten
the nut completely as shown. The clearance between
the boss and the nut should be 2 to 3 mm (0.08 to 0.12
in.).
AWhen applying label:
(1) Clean off all contaminates (dust, oil, grease, etc.)
from surface before applying label.
(2) Do not use the cotton work gloves or touch the
label adhesive surface with your hand.
AAssemble on a hard surface, preferably concrete.
Front Tread
2WD 4WD
L2501
L3301
L3901
Front axle is not
adjustable.
Front axle is not
adjustable.
Rear Tread
L2501
L3301
L3901
1115 mm (43.9 in.) or more
(1) Part number
(Marked on either position)
(1) Bolt
(2) Nut
(3) Pin
(A) 2 to 3 mm (0.08 to 0.12 in.)

5ASSEMBLY INSTRUCTIONS
ASSEMBLING LOADER KIT
BBoom Assembly
To avoid personal injury:
ADo not operate or mount loader without quick
attach or bucket installed to loader. Damage
may occur to bucket cylinders without these
conditions being set.
1. Attach the bucket to the boom and bucket links as
shown.
[LA525FL]
[LA525] Quick Hitch
AInstall M6 bolt and nut as shown in the figure to
prevent damage to the bolt threads.
AWhen fixing the pin with the bolt and nut, do not tighten
the nut completely.
The clearance between the boss and the nut should
be 2 to 3 mm (0.08 to 0.12 in.).
2. Attach the side frame to the boom.
(1) 2-Pin 3 (25.4 mm (1.0 in.) dia.) (Silver)
2-M6 x 55 bolts
2-M6 locking nuts
(2) 2-Pin 3 (25.4 mm (1.0 in.) dia.) (Black)
2-M6 x 55 bolts
2-M6 locking nuts
(1) 2-Pin 3 (25.4 mm (1.0 in.) dia.) (Silver)
2-M6 x 55 bolts
2-M6 locking nuts
(2) 2-Pin 3 (25.4 mm (1.0 in.) dia.) (Black)
2-M6 x 55 bolts
2-M6 locking nuts
(1) Bolt
(2) Nut
(3) Pin
(A) 2 to 3 mm (0.08 to 0.12 in.)
(1) Side frame
(2) Boom
(3) 2-pins (25.4 mm
(1.0 in.) dia.)
(4) 2-M6 x 70 bolts
(5) 2-M6 locking nuts
(6) 2-pins (25.4 mm
(1.0 in.) dia.)
(7) 2-M6 x 55 bolts
(8) 2-M6 locking nuts

ASSEMBLY INSTRUCTIONS6
3. Raise the boom until the stands can be rotated.
4. Remove the spring pins holding the stands to the
boom.
5. Rotate the stands until the pin on the stand and hole in
the boom are aligned.
Then slide the stands outward and insert the spring pin
as shown.
6. Apply the danger labels in position as shown below.
[LA525] Quick Hitch
BMain Frame
ABefore attaching the main frames, ensure all
contaminates (grease, grit, dust, etc.) are removed
from the threads and all mating surfaces. If oil or
contamination has adhered, clean off thoroughly
before assembling (by using contact cleaner,
scrapers, etc.). If oil or contamination remains on the
threads, it may lead to damaged threads and the
loosing of hardware and/or parts.
1. Remove plastic plugs and any excess paint from
tractor body bolt locations.
2. Attach the main frame LH and RH to the flywheel
housing and tractor frame as shown.
Tightening torque : 226 N-m (23 kgf-m, 166 ft-lbs)
ADo not tighten until all components are assembled.
(1) Belt sling
(1) Stand
(2) Spring pin
(1) 2-Labels, danger
(Part No. 7J802-3648-5)
(2) Boom
(A) 50 mm (1.97 in.)
(B) 10 mm (0.39 in.)
(1) 8-M16 x 40 bolts
8-M16 spring lock washers
8-5/8 hardened plain washers
(2) 8-M16 x 40 bolts
8-M16 spring lock washers

7ASSEMBLY INSTRUCTIONS
BHydraulic Line
1. Remove the cover of the hydraulic block on the tractor.
2. Install the loader hydraulic block to the tractor
hydraulic block.
Tightening torque : 23.0 N-m (2.35 kgf-m, 17.0 ft-lbs)
AMake sure install the O-rings at the hydraulic block
cover.
AReuse the bolts fastening the hydraulic block cover.
3. Install the control valve assembly to the main frame
RH as shown.
4. Connect the hose from pump port on the control valve
assembly to pump port on the hydraulic block.
5. Connect the hose from tank port on the control valve
assembly to tank port on the hydraulic block.
6. Connect the hose from power beyond port on the
control valve assembly to power beyond port on the
hydraulic block.
AHoses pre-installed on the control valve assembly are
not securely tightened to ease installation of hoses to
hydraulic block. Be sure to securely tighten all hose
fittings after installing.
ATurn the hose fittings so the hoses clear the tractor
and tractor parts.
(1) Hydraulic block (A) Pump port (Orange)
(B) Power beyond port (Green)
(C) Tank port (Gray)
(1) Control valve assembly
(2) 2-M12x30 bolts
2-M12 nuts
2-M12 spring lock washers
(A) Pump port (Orange)
(B) Tank port (Gray)
(C) Power beyond port (Green)

ASSEMBLY INSTRUCTIONS8
BFront Guard
1. Attach the front guard and front bumper together to the
front axle frame, using the four bolts (2) in the kit.
2. Fit the upper front guard and the lower front guard
together.
3. Assemble the specified parts as shown in the following
figure.
AMake sure the plate springs are in the specified
direction.
(1) Front guard
(2) 4-M14x1.5-45 bolts (Kit parts)
4-M14 spring lock washers (Kit parts)
(3) Front bumper
(4) Front axle frame
(1) Upper front guard
(2) Lower front guard
(3) 2-M20 x 80 hex. bolts
(4) 4-M20 plain washers
(1) 2-M20 x 80 hex. bolts
(2) 4-M20 plain washers (large)
(3) 4-M20 plate springs
(1) 4-M20 plate springs

9ASSEMBLY INSTRUCTIONS
4. Assemble the specified parts as shown in the following
figure.
AWith the upper and lower front guards fitted together,
tighten the hex nuts so that the guards swivel smoothly
but the upper front guard does not move by gravity.
5. Assemble the specified parts as shown in the following
figure.
ABefore moving the tractor or the front loader, make
sure the front guards are tightly locked.
CHow to open the upper front guard
1. Lower the boom to the ground with the bucket in level
position.
2. Pull the front guard lever and open the upper front
guard.
ALower the front loader to the ground before opening
the upper front guard.
ADo not raise the boom while the upper front guard is
opened.
(1) 4-M20 hex. nuts (A) 12 to 13 mm
(0.47 to 0.51 in.)
(1) Front guard lever
(2) Front guard spring
(3) Snap pin
(1) Front guard lever (A) "Lock position"
(B) "Unlock position"
(1) Front guard lever
(2) Upper front guard
(A) "Unlock"
(B) "Open"

ASSEMBLY INSTRUCTIONS10
BLevel Indicator (Option)
1. Remove two original pins from the boom (RH).
2. Install PIN 2 and PIN 8 to the boom (RH).
AMake sure the plate of PIN 2 is fitted in its specified
direction, as shown below.
3. Attach the level indicator.
AMake sure the indicator assy. is attached in its
specified direction, as shown below.
4. Depending on the front attachment, loosen the level
rod lock bolt and readjust the level rod length.
AMake sure to place the level indicator OUTSIDE hose
10 and 11 or damage to the hose will occur.
(1) Original pin
(1) PIN 2
(1) Indicator assy.
(2) PIN 8
(3) Split pin
(1) Bolt
(2) Level rod
(3) PIN 2
(4) Hose 10
(5) Hose 11

11ASSEMBLY INSTRUCTIONS
PRE-OPERATION CHECK
BLubrication
Lubricate all grease fittings with grease.
High quality grease designating "extreme pressure" and
containing Molybdenum disulfide is recommended.
This grease may specify "Moly EP" on its label.
BTransmission Fluid
Check the tractor transmission fluid level. Add fluid if
necessary. Refer to the tractor operator's manual for
instructions and proper fluid. Repeat this check after
purging air from the system. At that time, it will be
necessary to add transmission fluid.
ATo check the tractor transmission fluid level, lower the
bucket to the ground and lower the 3-point hitch.
[Manual Transmission Type]
[HST Type]
BHydraulic Hose
When connecting the four hoses to the control valve,
adjust the route of the hoses as shown.
(1) Dipstick (A) Oil level is acceptable within this range
(1) Dipstick (A) Oil level is acceptable within this range
(1) Oil inlet
(1) Hydraulic hose
(2) Hose guide

ASSEMBLY INSTRUCTIONS12
ESTIMATED ASSEMBLY TIME
Refer to the following table for the estimated assembly
time to open the crate and assemble the loader.
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) Impact wrench, Ratchet wrench, Torque wrench,
Socket wrench, Spanner wrench.
(3) Nylon strap.
LA525 1.5 hour

13ASSEMBLY INSTRUCTIONS
TIGHTENING TORQUE OF BOLTS AND NUTS
If the torque levels are specified in the text, follow that specification.
American standard screws, bolts and nuts with UNC or
UNF threads Metric cap screws
SAE grade No. SAE GR.5 SAE GR.8 property class 8.8 Approx. SAE GR 5
1/4
(N m)
(kgf m)
(lbf ft)
11.7 to 15.8
1.19 to 1.61
8.6 to 11.6
16.3 to 19.8
1.66 to 2.02
12.0 to 14.6
M6
(N m)
(kgf m)
(lbf ft)
9.8 to 11.2
1.0 to 1.1
7.2 to 8.3
5/16
(N m)
(kgf m)
(lbf ft)
23.1 to 27.8
2.35 to 2.83
17.0 to 20.5
32.5 to 39.3
3.31 to 4.01
24.0 to 29.0
M8
(N m)
(kgf m)
(lbf ft)
23.6 to 27.4
2.4 to 2.8
17.4 to 20.2
3/8
(N m)
(kgf m)
(lbf ft)
47.5 to 57.0
4.84 to 5.81
35.0 to 42.0
61.0 to 73.2
6.22 to 7.46
45.0 to 54.0
M10
(N m)
(kgf m)
(lbf ft)
48.1 to 55.8
4.9 to 5.7
35.5 to 41.2
1/2
(N m)
(kgf m)
(lbf ft)
108.5 to 130.2
11.06 to 13.28
80.0 to 96.0
149.2 to 179.0
15.21 to 18.25
110.0 to 132.0
M12
(N m)
(kgf m)
(lbf ft)
77.5 to 90.1
7.9 to 9.2
57.2 to 66.5
9/16
(N m)
(kgf m)
(lbf ft)
149.2 to 179.0
15.21 to 18.25
110.0 to 132.0
217.0 to 260.4
22.13 to 26.55
160.0 to 192.0
M14
(N m)
(kgf m)
(lbf ft)
124 to 147
12.6 to 15.0
91.5 to 108.4
5/8
(N m)
(kgf m)
(lbf ft)
203.4 to 244.1
20.74 to 24.89
150.0 to 180.0
298.3 to 358.0
30.42 to 36.51
220.0 to 264.0
M16
(N m)
(kgf m)
(lbf ft)
197 to 225
20.0 to 23.0
145 to 166
M18
(N m)
(kgf m)
(lbf ft)
275 to 318
28.0 to 32.5
203 to 235
M20
(N m)
(kgf m)
(lbf ft)
368 to 431
37.6 to 44.0
272 to 318