Kubota LA535 User manual

ASSEMBLY
INSTRUCTIONS
MODEL LA535
READ AND UNDERSTAND THIS MANUAL
BEFORE ASSEMBLING
4FAAABXAP2350
Code No. 7J066-6915-2 English (U.S.A.)
AY. H. 2-2. -. K
PRINTED IN U.S.A. © KUBOTA Corporation 2020

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 ................................................................................... 4
Main Frames.....................................................................................................................4
Boom Assembly with 2-Lever Quick Coupler ...................................................................6
Preparation for Hydraulic Line on Tractor Side [MSL kit and Swift-tach kit Only]............. 7
Preparation for Hydraulic Line on Tractor Side [Except LX3310, LX2610, LX2610SU] ... 7
Hydraulic Line ................................................................................................................... 8
Front Guard ...................................................................................................................... 8
3RD FUNCTION (IF EQUIPPED) ............................................................................ 9
Loader Side Section ......................................................................................................... 9
Tractor Side/CAB Section............................................................................................... 15
Tractor Side/ROPS Section............................................................................................ 20
SWIFT-TACH (IF EQUIPPED)............................................................................... 23
Stand .............................................................................................................................. 23
Stand Lock Lever............................................................................................................ 25
Uninstalling Mount Pin Holder ........................................................................................26
Hook Lever .....................................................................................................................26
Label Application ............................................................................................................ 27
Hydraulic Tubes.............................................................................................................. 27
4P Coupler (Bottom).......................................................................................................28
Foldable Lever................................................................................................................ 28
MSL (IF EQUIPPPED) ........................................................................................... 28
Coupler Stay...................................................................................................................28
MSL Assembly [Tractor Side] .........................................................................................29
MSL Assembly [Loader Side] .........................................................................................30
INSTALLING THE LOADER .................................................................................. 34
Adjusting the Height of Lifting Stand...............................................................................38
Instruction Tag................................................................................................................42
PRE-OPERATION CHECK.................................................................................... 42
Preparation for Hydraulic Line on Tractor Side [Except LX3310, LX2610, LX2610SU] . 42
Lubrication ...................................................................................................................... 43
Transmission Fluid.......................................................................................................... 43
Rear Ballast ....................................................................................................................44
Liquid Ballast in Rear Tires.............................................................................................44
Tire Inflation.................................................................................................................... 44
Inflation Pressure............................................................................................................ 44
Test Operation................................................................................................................ 45
Removing Air from Hydraulic System.............................................................................45
ESTIMATED ASSEMBLY TIME............................................................................. 45
TIGHTENING TORQUE OF BOLTS AND NUTS .................................................. 46

CONTENTS
TIGHTENING TORQUE OF ADAPTORS, ELBOWS AND OTHERS.................... 47

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, ensure that all components have been included.
AFor LA535, the bucket is shipped separately.
AFor 3rd function kit, Swift-tach kit, and MSL kit, check the packing lists included in each kit.
REF. No. PART No. PART NAME Q'TY REMARKS
1 - BOOM, ASSEMBLY 1
2 - 2-LEVER QUICK COUPLER 1
3 7J066-5501-0 FRAME (MAIN, LH) 1
4 7J066-5503-0 FRAME (MAIN, RH) 1
5 7J056-5591-0 CONNECTOR 2
6 - FRONT GUARD, ASSEMBLY 1
7 01073-51440 BOLT 14 M14 x 1.5 x 40
8 02076-50140 NUT 4 M14 x 1.5
9 04612-50160 CIR-CLIP EXTERNAL 1
10 04512-50140 WASHER, SPRING LOCK 14
11 7J612-5681-0 PIN, MOUNT 2
12 04612-5016-0 CIR-CLIP EXTERNAL 1
13 7J066-6912-0 MANUAL (OPERATOR) 1
14 7J066-6915-0 MANUAL (E, ASSEMBLY) 1

ASSEMBLY INSTRUCTIONS4
TRACTOR PREPARATION
Park the tractor on a firm level surface. Stop the engine.
BEFORE ASSEMBLY
ABefore assembling the hardware (bolts, adapters,
hoses, etc.), ensure all contaminants (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
loosening 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 contaminants 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 contaminants (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.
ASSEMBLING LOADER KIT
BMain Frames
ABefore attaching the main frames, ensure all
contaminants (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
loosening of hardware and/or parts.
(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
1. Remove the sub frame bracket from the tractor.
AReuse the bolts fastening the sub frame bracket.
2. Attach the main frame to the tractor.
3. Attach the main frame connector as shown.
ADo not tighten until all components are assembled.
(1) Sub frame bracket
(2) 3-M12 bolts
(3) 3-M14 bolts
(1) Main frame
(2) 1-M14 bolt
1-M14 spring lock washer
(3) 3-M12 bolts (pitch 1.75) (Original)
3-M12 spring lock washers (Original)
(4) 3-M14 bolts (pitch 1.75) (Original)
3-M14 spring lock washers (Original)
(2)
(4) Tightening torque
124 to 147 N m
(12.6 to 15.0 kgf m)
(91.5 to 108.4 lbf ft)
(3) Tightening torque
80.0 to 90.0 N m
(8.2 to 9.2 kgf m)
(59.0 to 66.4 lbf ft)
(1) Main frame connector
(2) 8-M14 bolts
8-M14 spring lock washers
Tightening torque
124 to 147 N m
(12.6 to 15.0 kgf m)
(91.5 to 108.4 lbf ft)

ASSEMBLY INSTRUCTIONS6
BBoom Assembly with 2-Lever Quick
Coupler
1. Attach the 2-lever quick coupler to the boom and
bucket cylinders as shown.
2. Install the indicator to Pin 8 as shown.
3. Raise the boom until the stands can be rotated.
(1) Pin 8
(2) 3-Pin 3
(3) 4-M10 SQ-neck bolts (Original)
(4) 4-M10 clinch nuts (Original)
(5) 4-Collors (Original)
(6) 2-Lever quick coupler
(7) Bucket cylinder
(1) Indicator assy (2) Cir-clip (New)
(1) Shackle (2) Belt sling

7ASSEMBLY INSTRUCTIONS
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 cotter pin
as shown.
BPreparation for Hydraulic Line on Tractor
Side [MSL kit and Swift-tach kit Only]
Remove the couplers and caps from the tractor as shown
below. Rewind sealing tape and attach the adapter.
BPreparation for Hydraulic Line on Tractor
Side [Except LX3310, LX2610, LX2610SU]
Check the manufacturer of the hydraulic couplers (male)
on the tractor side and the hydraulic couplers (female) on
the loader side. If they are not identical, it is necessary to
replace the hydraulic couplers (male) on the tractor side
as follows. The combination of different manufacturers will
lead to poor performance.
AThe difference between two couplers can also be
confirmed by stamps as shown in the figure.
(1) Stand (2) Cotter pin
(1) Coupler
(2) Cap
(3) Adapter
Old 7J612-6622-0 1/4 NIPPLE HNV14NPTM 4 ea.
New K2581-6622-0 1/4 NIPPLE H2-63 4 ea.
(A) Old: "HNV14NPTM"
New: "H2-63"

ASSEMBLY INSTRUCTIONS8
BHydraulic Line
Connect four hoses with couplers to the nipples on the
control valve as indicated with color marks. Then connect
the protective caps and plugs to each other.
AFailure to connect couplers completely and correctly
will cause hydraulic malfunction and damage.
AWhen disconnecting the four hoses with quick
couplers at the control valve, be sure to hook the
hoses and attach the protective plugs to their
respective couplers as shown below.
BFront Guard
Attach the front guard to the front axle frame of tractor.
AWhen attaching the front guard to the front axle frame,
do not tighten the bolt. Make sure the top of bolts
contacts the front axle frame and then tighten the nuts.
(1) Hoses
(1) Hoses
(2) Mount pin
(3) Protective plugs
(1) Front guard
(2) 4-M14 x 40 bolts
(3) 4-M14 spring lock washers
(4) 4-M14 nuts
(5) Front axle frame
Tightening torque
124 to 147 N m
(12.6 to 15.0 kgf m)
(91.5 to 108.4 lbf ft)

9ASSEMBLY INSTRUCTIONS
AThe front guard has its mounting holes in different
positions between CAB models and ROPS models.
Referring to the figure below, select their respective
proper mounting holes.
IMPORTANT:
[When installing the old type mower]
AWhen the nuts, which is fixing the bolt of the front
guard, contact the front hanger bracket of the mower,
cut the front hanger bracket as shown in the illustration
below.
ABefore finally tightening all mounting hardware, start
the engine and apply down pressure to the bucket until
the loader raises the front wheels slightly, and make
sure that the mounting pins can be rotated easily.
Tighten all bolts and nuts in this position.
3RD FUNCTION (IF EQUIPPED)
BLoader Side Section
1. Attach the coupler stay to the boom.
2. Removing right boom cylinder and install 3rd function
hydraulic tubes as shown below.
(A) Proper mounting hole
(1) Front hanger bracket [RCK60-30B]
(A) 30 mm (1.18 in.)
(B) 20 mm (0.78 in.)
[RC72-27B]
(A) 40.5 mm (1.59 in.)
(B) 16.5 mm (0.64 in.)
(1) Coupler stay
(2) M8 x 30 bolt with washers

ASSEMBLY INSTRUCTIONS10
ARemove the original tube stays fixing the four loader
tubes, and fix the six tubes together using the tube
stays in the kit.
3. Fix the tubes with nuts and cover the end with metal
caps.
AWrap seal tape around male thread before installing
the caps.
4. Install the right boom cylinder.
5. Connect the hydraulic hoses (9/16 UNF) to tubes.
CHose guide
1. Install the hose guide on side frame RH as shown.
C3rd Function Valve section
1. Install 3rd function coupler stay to Main Frame (RH) as
shown the chart below.
(1) Hydraulic tube 1 (Black)
(2) Hydraulic tube 2 (Green)
(3) 2-M6 x 25 bolts with washers
(4) 2-Tube stays
(1) 2-Nuts (3/4 UNF)
(2) 2-Caps (3/8 NPTF)
(1) Hose guide
(2) M16 x 30 bolt
(3) M16 nut
Combination
(Figure) ABCD
Kit
3rd
function ON ON ON ON
MSL ON ON
Swift-tach ON ON
Bolt length for
3rd Valve stay 40 mm 45 mm 45 mm 45 mm
Direction of bolt In to Out Out to In Out to In Out to In
(1) 2-M10 x 40 bolts
(2) 2-M10 nylon lock nuts

11ASSEMBLY INSTRUCTIONS
2. Install the 3rd function vale to valve stay as shown in
the figure.
C3rd Function Hydraulic Line
[Not equipped with backhoe]
Use the following kit parts as shown below.
1. Disconnect the front loader power beyond pipe.
(1) 2-M10 x 45 bolts
(2) M10 x 40 bolt with washers
(3) M10 nut
(1) 2-M10 x 45 bolts
(2) 2-M10 nylon lock nuts
(3) M10 bolt with washers
(4) M10 nut
(1) 2-M10 x 45 bolts
(2) M10 x 40 bolt with washers
(3) M10 nut
(1) 3rd function valve assy
(2) 2-M10 x 25 bolts
(1) Power beyond pipe
(2) Adapter
(1) Front loader power beyond pipe

ASSEMBLY INSTRUCTIONS12
2. Connect the power beyond pipe and adapter as shown
below.
ATighten the plug (original) after all hoses are
connected.
3. Connect the inlet hose to the adapter and connect the
outlet hose to the power beyond pipe respectively.
4. Connect the hoses to the 3rd function assembly.
5. Secure the inlet hose and outlet hose with the band as
shown below.
(1) Power beyond pipe
(2) Adapter (3/4 UNF)
(3) Plug (Original)
(4) 2-Packing
(3) Tightening torque
50 to 60 N m
(5.1 to 6.1 kgf m)
(37 to 44 lbf ft)
(1) Inlet hose
(2) Adapter
(3) Outlet hose
(4) Power beyond pipe
(1) Inlet hose
(2) Outlet hose
(1) Inlet hose
(2) Outlet hose
(3) Band

13ASSEMBLY INSTRUCTIONS
[Equipped with backhoe]
If the backhoe kit has been equipped, disconnect the
backhoe inlet pipe first and then remove the female
coupler and dust plug.
AThe removed female coupler and dust plug will be
used again for the power beyond pipe.
Use the following kit parts as shown below.
1. Disconnect the front loader power beyond pipe if
equipped.
(1) Backhoe inlet pipe (Disconnect)
(1) Female coupler
(2) Dust plug
(1) Power beyond pipe
(2) Adapter
(1) Front loader power beyond pipe

ASSEMBLY INSTRUCTIONS14
2. Connect the adapter.
ARefer to the backhoe assembly instructions for the
backhoe outlet pipe and backhoe outlet hose.
3. Attach the female coupler and dust plug to the power
beyond pipe. At this time, use the removed female
coupler and dust plug.
4. Connect the inlet hose to the adapter and connect the
outlet hose to the power beyond pipe respectively.
5. Secure the power beyond pipe with the backhoe sub
frame and connecting plate.
(1) Adapter
(2) Backhoe outlet pipe (in the backhoe kit)
(3) Backhoe outlet hose (in the backhoe kit)
No. Size Tightening torque
(1) 3/4
48 to 54 N m
(4.9 to 5.5 kgf m)
(35 to 40 lbf ft)
(1) Power beyond pipe
(2) Female coupler (in the backhoe kit)
(3) Dust plug (in the backhoe kit)
(4) Sealing tape
Tightening torque
39 to 60 N m
(3.9 to 6.1 kgf m)
(29 to 44 lbf ft)
(1) Inlet hose
(2) Adapter
(3) Outlet hose
(4) Power beyond pipe
No. Size Tightening torque
(1) 3/4
49 to 53 N m
(5.00 to 5.40 kgf m)
(36.2 to 39.0 lbf ft)
(3) 9/16
25 to 28 N m
(2.55 to 2.85 kgf m)
(18.5 to 20.6 lbf ft)
(1) Connecting plate
(2) Sub frame
(3) 2-M8 x 30 bolts
(4) 2-M8 nuts
No. Size Tightening torque
(4) M8
23.6 to 27.4 N m
(2.4 to 2.8 kgf m)
(17.4 to 20.2 lbf ft)

15ASSEMBLY INSTRUCTIONS
6. Connect the hoses to the adapters of 3rd function
assembly.
7. Secure the inlet hose and outlet hose with the band as
shown below.
BTractor Side/CAB Section
CControl Lever for CAB
1. Cut lever boot as shown below.
2. Loosen the bolt on the lever and remove top half of
lever and boot.
3. Remove the lever console.
4. Fit the 3rd function control lever wire harness and its
stay into the lever.
CWith Swift-tach (Foldable lever)
1. Remove the lever assembly from its base.
2. Draw out the pin. Separate the lever assembly from its
base. Then remove the lever lock assembly.
(1) Inlet hose
(2) Outlet hose
(3) 2-Adapters
No. Size Tightening torque
(1)
(2) 3/4
49 to 53 N m
(5.00 to 5.40 kgf m)
(36.2 to 39.0 lbf ft)
(1) Inlet hose
(2) Outlet hose
(3) Band
(1) Cutting area
(1) Lever assy
(2) Pin
(3) Lever base

ASSEMBLY INSTRUCTIONS16
3. Set the 3rd function control lever boot onto the lever
lock assembly. Insert the cir-clip to fix them.
4. Put the 3rd function control lever through its lock
assembly. Fit the wire harness guide into the boot as
shown below. Then install the lever onto its base.
5. Place the control lever (upper) in position. Adjust the
grip angle and tighten up the lock nut. Then route the
wire harness along the boot.
6. Fit the lever to the tractor. Route the wire harness and
clamp it with the cord bands as shown below.
CWithout Swift-tach
(1) Lever lock (Upper)
(2) Lever boot (for 3rd function)
(3) Lever lock assy (Lower)
(4) Cir-clip
(1) Control lever (3rd function, Lower)
(2) Harness guide
(3) Crevis pin
(4) Split pin
(5) Lever base
(1) Control lever (3rd function, Upper)
(2) M12 nut
(3) 3rd fanction harness
(1) Band code (White)
(2) Band code (Black)
(3) Harness clamp stay