Kubota LA1353 User Manual

LA1153, LA1353, WSM
SAFETY INSTRUCTIONS
SAFETY FIRST
This symbol, the industry's "Safety Alert Symbol", is used throughout this manual and on labels on
the machine itself
to warn of the possibility of personal injury. Read these instructions carefully.
It
is essential that you read the instructions and safety regulations before you attempt to repair or use
this unit.
• NOTE
: Gives helpful information.
BEFORE SERVICING AND REPAIRING
• Read all instructions and safety instructions in this
manual and on your machine safety decals.
• Clean the work area and machine.
• Park the machine on a firm and level ground, and set
the parking brake.
• Lower the implement to the ground.
• Stop the engine. and remove the key.
• Disconnect the battery negative cable.
• Hang a
''~O NOT OPERATE" tag in operator
station.
A DANGER
: Indicates an imminently hazardous situation which,
if not avoided, will result in
death
or serious injury,
A WARNING
: Indicates a potentially hazardous situation which,
if not avoided, could result in
death or serious injury.
A CAUTION
: Indicates a potentially hazardous situation which,
if not avoided, may result in
minor or moderate injury.
• IMPORTANT
: Indicates that equipment
or property damage could result if instructions are not
followed .
1

Kubota LA1353 Specifications

General

Brand	Kubota
Model	LA1353
Category	Front End Loaders
Language	English

Summary

SAFETY FIRST

BEFORE SERVICING AND REPAIRING

SPECIFICATIONS

LOADER SPECIFICATIONS

Technical specifications for LA1153 and LA1353 loader models, including dimensions and performance.

BUCKET SPECIFICATIONS

Technical specifications for the bucket attachments used with LA1153 and LA1353 loaders.

DIMENSIONAL AND OPERATIONAL SPECIFICATIONS

DIMENSIONAL SPECIFICATIONS

Detailed measurements and dimensions for the loader's boom, reach, and height.

OPERATIONAL SPECIFICATIONS

Performance data including lift capacity, breakout force, and cycle times for loader operation.

MECHANISM

CONTROL VALVE ASSEMBLY (LA1153 STANDARD VALVE)

CONTROL VALVE ASSEMBLY (LA1353 STANDARD VALVE)

NEUTRAL OPERATION

UP OPERATION

DOWN OPERATION

FLOATING OPERATION

ROLL-BACK OPERATION

DUMP OPERATION

RELIEF VALVE

Description of the relief valve used in the LA1353 control valve assembly.

SELF-LEVEL VALVE

HYDRAULIC CIRCUIT

Diagram illustrating the hydraulic circuit for the self-leveling valve system.

STRUCTURE

Description of the structures of boom control, self-leveling, and bucket control valves.

NEUTRAL (FIGURE 1)

BOOM RAISING (FIGURE 1)

SELF-LEVELING ON BOOM RAISING (FIGURE 1)

BOOM RAISING WITH BUCKET CYLINDER EXTENDED (FIGURE 1)

BOOM LOWERING (FIGURE 1)

SELF-LEVELING ON BOOM LOWERING (FIGURE 1)

BOOM LOWERING WITH BUCKET CYLINDER FULLY RETRACTED (FIGURE 1)

BOOM FLOATING (FIGURE 1)

BUCKET (ROLL-BUCK) (FIGURE 1)

BUCKET (DUMP) (FIGURE 1)

RELIEF VALVE

MAIN RELIEF VALVE

OVERLOAD RELIEF VALVE

RELIEF OPERATION

ANTI-CAVITATION OPERATION

BOOM CYLINDER AND BUCKET CYLINDER

CYLINDER SPECIFICATIONS

Provides detailed specifications for boom and bucket cylinders, including bore, rod diameter, and stroke.

TROUBLESHOOTING

BOOM DOES NOT RISE

Potential causes and solutions for the boom failing to rise properly.

BOOM DOES NOT LOWER

Potential causes and solutions for the boom failing to lower properly.

INSUFFICIENT BOOM SPEED

Causes and fixes for reduced boom operation speed.

BUCKET DOES NOT MOVE

Troubleshooting steps for when the bucket fails to move.

INSUFFICIENT BUCKET SPEED

Causes and solutions for slow bucket operation.

FRONT END LOADER DROPS BY ITS WEIGHT

Diagnosis for the loader assembly dropping under its own weight.

SERVICING SPECIFICATIONS

RELIEF VALVE CONDITION

Specifications for relief valve setting pressure and operating conditions like engine speed and oil temperature.

TIGHTENING TORQUES

GENERAL USE SCREWS, BOLTS AND NUTS

HYDRAULIC FITTINGS

TIGHTENING TORQUES OF SCREWS, BOLTS AND NUTS ON THE TABLE BELOW ARE ESPECIALLY SPECIFIED

DISMOUNTING FRONT LOADER FROM TRACTOR

STAND

SIDE FRAME

CHECKING, DISASSEMBLING AND SERVICING

CONTROL VALVE

Procedures for checking, disassembling, and servicing the control valve assembly.

RELIEF VALVE SETTING PRESSURE (SELF-LEVELING VALVE TYPE)

DISASSEMBLING CONTROL VALVE

SEPARATING CONTROL VALVE ASSEMBLY

ELBOW (STANDARD VALVE TYPE)

ADJUSTING SELF-LEVELING

RAISE LEVELING ADJUSTMENT

Steps to adjust the self-leveling function for raising the bucket or fork to the correct angle.

LOWER LEVELING ADJUSTMENT

DISASSEMBLING CONTROL VALVE [LA1153]

BOOM CONTROL SECTION AND BUCKET CONTROL SECTION

DISASSEMBLING BOOM CONTROL VALVE

DISASSEMBLING BUCKET CONTROL VALVE

DISASSEMBLING CONTROLLER AND CABLES

BUCKET, BOOM AND HYDRAULIC CYLINDERS

SEPARATING

Procedures for separating the bucket, boom, and hydraulic cylinders from the loader.

HYDRAULIC CYLINDERS AND HYDRAULIC HOSES

REMOVING CYLINDERS AND HOSES

Steps for removing hydraulic cylinders and hoses, including reassembly notes.

DISASSEMBLING PISTON ROD ASSEMBLY

PISTON ROD ASSEMBLY

CYLINDER HEAD, PISTON AND NUT

PISTON SEAL AND O-RING

INSTALLING O-RING AND PISTON SEAL