Kubota KX057-4 U55 U55-4 Excavator Workshop Manual – PDF DOWNLOAD

Description

Kubota KX057-4 U55 U55-4 Excavator Workshop Manual – PDF DOWNLOAD

DESCRIPTION:

Kubota KX057-4 U55 U55-4 Excavator Workshop Manual – PDF DOWNLOAD

TO THE READER
This Workshop Manual provides service personnel with information about the mechanisms, service
and maintenance of the construction machinery. This Workshop Manual is divided into 3 sections,
General, Mechanisms and Service.
? General
This section contains information such as engine and equipment ID numbers, general precautions,
maintenance schedules, inspections and maintenance items and special tools.
? Mechanisms
This section describes the structure of mechanisms and explains their functions.Be sure that you
fully understand this Mechanisms section prior to performing any service work, such as troubleshooting
or when performing any disassembly or assembly work.
? Service
This section contains information and procedures for performing maintenance on the backhoe, such
as troubleshooting, service specification tables, torque specifications, items to be inspected and
adjusted, disassembly and assembly procedures, as well as precautions, maintenance standard values
and usage limits.

• All of the illustrations, specifications and other information in this manual were created based on the
  latest model at the time of publication.
• Please be aware that changes to the content may be made without prior notice.

TABLE OF CONTENTS:

Kubota KX057-4 U55 U55-4 Excavator Workshop Manual – PDF DOWNLOAD

- KX057-4,U55-4
  - CONTENTS
  - TO THE READER
  - I INFORMATION
    - INFORMATION
      - 1. SAFETY FIRST
      - 2. IN THE INTEREST OF WORK SAFETY
        - [1] WORKING SAFELY WITH THE EQUIPMENT MEANS ALWAYS FOLLOWING THESE INSTRUCTIONS:
          - (1) Precautions Before Working on the Mini-Excavator
          - (2) Precautions Before Working on the Equipment
      - 3. SAFETY DECALS
        - [1] US, CA VERSION
      - 4. MAIN SPECIFICATIONS
      - 5. DIMENSIONS
  - G GENERAL
    - GENERAL
      - 1. CHECKING EXCAVATOR IDENTIFICATION
      - 2. ENGINE IDENTIFICATION
        - [1] MODEL NAME AND SERIAL NUMBER
        - [2] E4B ENGINE
      - 3. MUFFLER FULL ASSEMBLY IDENTIFICATION
        - [1] PART NUMBER AND SERIAL NUMBER
      - 4. GENERAL PRECAUTIONS
      - 5. HANDLING PRECAUTIONS FOR ELECTRICAL PARTS AND WIRING
        - [1] WIRING
        - [2] FUSES
        - [3] CONNECTOR
        - [4] WASHING THE MACHINE WITH A HIGH-PRESSURE WASHER
      - 6. TYPES OF OIL
        - [1] TABLE OF OIL AND FLUID CAPACITIES
        - [2] CHECKING AND FILLING HYDRAULIC OIL
      - 7. TIGHTENING TORQUES
        - [1] GENERAL USE SCREWS, BOLTS AND NUTS
        - [2] STUD BOLTS
        - [3] TORQUE FOR HYDRAULIC HOSE FITTINGS
          - (1) Torque for Hydraulic Hose Fittings
          - (2) Torques of Lock-Nuts for Elbows with Male Seats and Adaptors with O-Rings (Straight Threads)
          - (3) Torque for Tapering Adaptors
        - [4] HOSE CLAMP SCREW TORQUE
      - 8. MAINTENANCE
  - 1 MACHINE BODY
    - SERVICING
      - 1. FRONT OPERATING MACHINE
        - [1] AUX1 ARM LINES
        - [2] BUCKET INSTALLATION RELEVANT DIMENSIONS
        - [3] FRONT PIN
        - [4] BLADE
          - (1) Blade Dimension
          - (2) Angle Blade Components
      - 2. SWIVEL FRAME
        - [1] WEIGHT DIASSEMBLY / ASSEMBLY
        - [2] CANOPY
        - [3] FUEL TANK
        - [4] HYDRAULIC OIL TANK
          - (1) Hydraulic Oil Tank Components
          - (2) Hydraulic Oil Return Filter Replacement Procedure
          - (3) Filter (Suction) Replacement Procedure
          - (4) Filter (Breather) Replacement Procedure
          - (5) Assembly of Anti Vibration Support for the Hydraulic Oil Tank
        - [5] ENGINE
          - (1) Engine Diassembly / Assembly
          - (2) Engine Mount Installation
          - (3) Arch, Air Cleaner
          - (4) Radiator
          - (5) Oil Cooler
        - [6] DPF MUFFLER
          - (1) DPF Muffler Diassembly / Assembly
          - (2) DPF Muffler Assembly
          - (3) Assembling of DPF Exhaust Pipe and DPF Cover
        - [7] ASSEMBLING OF OPERATING LEVERS
          - (1) Travel Lever
          - (2) Blade Lever
      - 3. TRACK FRAME
        - [1] ASSEMBLING OF SWIVEL BEARING
        - [2] TRACK
          - (1) Assembly / Disassembly of Rubber Track
          - (2) Assembly / Disassembly of Iron Tracks
        - [3] RUBBER CRAWLER
        - [4] STEEL CRAWLER
        - [5] FRONT IDLER
          - (1) Assembly/Disassembly of Front Idler
          - (2) Front Idler Structural Components
        - [6] SPRING ASSY
          - (1) Assembly/Disassembly of Spring Assy
        - [7] CYLINDER ASSEMBLY
          - (1) Assembly/Disassembly of Cylinder Assy
          - (2) Cylinder Assembly Structural Components
        - [8] TRACK ROLLER
          - (1) Assembly/Disassembly of Track Roller
          - (2) Track Roller Structural Components
        - [9] CARRIER ROLLER
          - (1) Assembly/Disassembly of Carrier Roller
          - (2) Carrier Roller Structural Components
        - [10] TRUCK ROLLER, IDLER AND SPROCKET DIMENSIONS
  - 2 ENGINE
    - GENERAL
      - 1. SPECIFICATIONS
      - 2. EXTERNAL DIMENSIONS
      - 3. LAYOUT OF MAIN PARTS
      - 4. PERFORMANCE CURVE
      - 5. FAN DRIVE
  - 3 HYDRAULIC SYSTEM
    - MECHANISM
      - 1. DIAGRAM OF HYDRAULIC CIRCUIT [KX057-4, U55-4 STANDARD SPECIFICATION (ANGLE BLADE OPTION)]
      - 2. HYDRAULIC DEVICE LAYOUT
      - 3. PUMP
        - [1] PUMP WITH LS CONTROL FUNCTIONS
          - (1) Specifications
          - (2) Function and Structure
      - 4. CONTROL VALVE
        - [1] SPECIFICATIONS
        - [2] DIAGRAM OF HYDRAULIC CIRCUIT
        - [3] FUNCTION AND STRUCTURE
          - (1) Independent Travel Circuit
          - (2) When Traveling Independently (Operation of Left/Right Forward Travel)
          - (3) When Operating Multiple Functions (Travel and Front-End Operation(s))
          - (4) Front-End Operation
          - (5) Compensator Spool (Pressure Compensator Valve)
      - 5. SWIVEL MOTOR
        - [1] SPECIFICATIONS
        - [2] COMPONENTS
        - [3] FUNCTION AND STRUCTURE
          - (1) Operating Principles
          - (2) Make Up Circuit
          - (3) Shockless Valves
          - (4) Parking Brake
      - 6. TRAVEL MOTOR
        - [1] SPECIFICATIONS
        - [2] COMPONENTS
        - [3] FUNCTION AND STRUCTURE
          - (1) Operating Principles
          - (2) Counter-Balance Valve
          - (3) Anti-Cavitation Valve
          - (4) Auto-Decelerator Function
          - (5) Parking Brake
          - (6) Decelerator
      - 7. HYDRAULIC CYLINDER
        - [1] BOOM CYLINDER
          - (1) Specifications
          - (2) Components
          - (3) Function and Structure
        - [2] ARM CYLINDER
          - (1) Specifications
          - (2) Components
          - (3) Function and Structure
        - [3] BUCKET CYLINDER
          - (1) Specifications
          - (2) Components
        - [4] SWING CYLINDER
          - (1) Specifications
          - (2) Components
        - [5] BLADE CYLINDER
          - (1) Specifications
          - (2) Components
        - [6] ANGLE CYLINDER
          - (1) Specifications
          - (2) Components
      - 8. PILOT VALVE
        - [1] PILOT VALVE (BOOM, ARM, BUCKET, SWIVEL)
          - (1) Specifications
          - (2) Components
          - (3) Function and Structure
        - [2] PILOT VALVE (TRAVEL)
          - (1) Specifications
          - (2) Components
          - (3) Function and Structure
        - [3] PILOT VALVE (SWING)
          - (1) Specifications
          - (2) Components
          - (3) Function and Structure
        - [4] PILOT VALVE (BLADE)
          - (1) Specifications
          - (2) Components
          - (3) Function and Structure
      - 9. UNLOAD VALVE
        - [1] SPECIFICATIONS
        - [2] COMPONENTS
        - [3] FUNCTION AND STRUCTURE
          - (1) Function
          - (2) Operation
      - 10. SOLENOID VALVE
        - [1] SOLENOID VALVE FOR ANGLE BLADE
          - (1) Specifications
          - (2) Components
          - (3) Function and Structure
        - [2] SOLENOID VALVE FOR AUX
          - (1) Specifications
          - (2) Components
          - (3) Function and Structure
        - [3] EP MODE SOLENOID VALVE
          - (1) Specifications
    - SERVICING
      - 1. PUMP
        - [1] PUMP DISASSEMBLY / ASSEMBLY
      - 2. CONTROL VALVE
        - [1] CONTROL VALVE REMOVAL
      - 3. SWIVEL MOTOR
        - [1] REMOVAL AND INSTALLATION OF THE SWIVEL MOTOR
        - [2] SWIVEL MOTOR ASSEMBLY PROCEDURES
          - (1) Assembly Procedures
      - 4. SWIVEL JOINT
        - [1] SWIVEL JOINT INSTALLATION AND REMOVAL
        - [2] SWIVEL JOINT
      - 5. TRAVEL MOTOR
        - [1] REMOVAL AND INSTALLATION OF THE TRAVEL MOTOR
        - [2] TRAVEL MOTOR DISASSEMBLY / ASSEMBLY PROCEDURES
          - (1) Disassembly Procedures
          - (2) Assembly Procedures
        - [3] SPECIAL TOOLS
      - 6. HYDRAULIC CYLINDER
        - [1] HYDRAULIC CYLINDER DISASSEMBLY / ASSEMBLY PROCEDURES
          - (1) Cylinder Components
          - (2) Disassembly Procedures
          - (3) Assembly Procedures
      - 7. PILOT VALVE (CONTROL)
        - [1] PILOT VALVE (CONTROL) ASSEMBLY
        - [2] PILOT VALVE (CONTROL) DISASSEMBLY / ASSEMBLY PROCEDURES
          - (1) Pilot Valve Components
          - (2) Disassembly
          - (3) Assembly
          - (4) U-Joint Tightening Tool
      - 8. PILOT VALVE (TRAVEL)
        - [1] PILOT VALVE (TRAVEL) ASSEMBLY
        - [2] PILOT VALVE (TRAVEL) DISASSEMBLY / ASSEMBLY PROCEDURES
          - (1) Disassembly Procedures
          - (2) Assembly Procedures
      - 9. PILOT VALVE (SWING)
        - [1] PILOT VALVE (SWING) DISASSEMBLY
        - [2] PILOT VALVE (SWING) ASSEMBLY
      - 10. PILOT VALVE (BLADE)
        - [1] PILOT VALVE (BLADE) ASSEMBLY
        - [2] PILOT VALVE (BLADE) DISASSEMBLY GUIDE
          - (1) Disassembly
          - (2) Assembly
      - 11. UNLOAD VALVE
        - [1] UNLOAD VALVE ASSEMBLY
        - [2] UNLOAD VALVE DISASSEMBLY / ASSEMBLY PROCEDURES
          - (1) Disassembly / Assembly Procedures
      - 12. TPSS VALVE
        - [1] TPSS VALVE
          - (1) Specifications
          - (2) Components
      - 13. THIRD LINE VALVE ASSEMBLY
        - [1] THIRD LINE VALVE ASSEMBLY COMPONENTS
        - [2] THIRD LINE HOSE ROUTE
      - 14. ROUTING OF HYDRAULIC HOSES
        - [1] TABLE OF HYDRAULIC HOSES
          - (1) Hydraulic Hoses
          - (2) Table of High-Pressure Hoses
          - (3) Deliver Hose Routing
          - (4) Delivery Hose Clamp Positions
          - (5) Suction Pipe and Hose Routing
          - (6) Installation of Pipes (Suction)
          - (7) Front Hose Routing (U55-4)
          - (8) Front Hose Routing (KX057-4)
          - (9) High-Pressure Hydraulic Hose Routing (Front)
          - (10) High-Pressure Hydraulic Hose Routing (Travel, Swivel, Blade, Swing)
          - (11) High-Pressure Hydraulic Hose Routing (Travel, Swivel, Blade, Angle, Swing)
          - (12) High-Pressure Hydraulic Hose Routing (Travel, Blade Swivel)
          - (13) High-Pressure Hydraulic Hose Routing (Travel, Blade, Angle, Swivel)
          - (14) Hose Routing Inside the Track Frame (Standard Spec)
          - (15) Hose Routing Inside the Track Frame (Angle Spec)
          - (16) Swivel Hose Routing (KX057-4)
          - (17) Swivel Hose Routing (U55-4)
        - [2] TABLE OF HYDRAULIC HOSES (LOW-PRESSURE HOSES)
          - (1) Table of Hydraulic Hoses
          - (2) Table of Protective Tubing
          - (3) Drain Hose Routing
        - [3] TABLE OF HYDRAULIC HOSES (PILOT HOSES)
          - (1) Table of Pilot Hoses
          - (2) Pilot Hose Routing (P)
          - (3) Pilot Hose Routing (P)
          - (4) Pilot Hose Routing (T)
          - (5) Pilot Hose Routing (Front)
          - (6) Pilot Hose Routing (Travel, Blade, Swing, AUX1, AUX2)
          - (7) Pilot Hose Routing (Travel, Blade, Swing, AUX1, AUX2, Angle)
          - (8) Pilot Hose Routing (Control Valve) (KX057-4)
          - (9) Pilot Hose Routing (Control Valve) (U55-4)
          - (10) Overall Routing of Pilot Hoses (Front of Machine) (KX057-4)
          - (11) Overall Routing of Pilot Hoses (Front of Machine) (U55-4)
          - (12) Overall Routing of Pilot Hoses (Right Side of Machine) (KX057-4)
          - (13) Overall Routing of Pilot Hoses (Right of Machine) (U55-4)
          - (14) Pilot Hose Routing (Around the Driver's Seat)
      - 15. HYDRAULIC DEVICE PERFORMANCE MEASUREMENT
      - 16. CHART OF MEASURED VALUES FOR HYDRAULIC DEVICE PERFORMANCE
      - 17. TROUBLESHOOTING
  - 4 ELECTRICAL SYSTEM
    - SERVICING
      - 1. READING THE ELECTRICAL CIRCUIT DIAGRAMS
        - [1] LAYOUT OF ELECTRICAL CIRCUIT DIAGRAMS
          - (1) Main Layout
        - [2] LAYOUT OF CONNECTOR DIAGRAMS
          - (1) Main Layout
        - [3] PRECAUTIONS ON HANDLING ELECTRICAL CONNECTORS
      - 2. LAYOUT OF ELECTRICAL EQUIPMENT AND CONNECTORS
        - [1] COMPARTMENT
        - [2] REAR BONNET
        - [3] RIGHT BONNET
        - [4] ENGINE AREA CONNECTORS
      - 3. TROUBLESHOOTING (START-UP EQUIPMENT VERSION)
      - 4. INSPECTIONS
        - [1] POWER AND GROUND
        - [2] STARTING AND STOPPING DEVICE
      - 5. INSTRUMENT PANEL OPERATING GUIDE
        - [1] METER OPERATING UNIT
          - (1) Names and Functions of Each Meter and Switch
        - [2] OPERATING METHOD REFERENCE LIST
        - [3] DETAILS OF THE OPERATIONAL PROCEDURES
          - (1) Refer to the Hour Meter, Clock, Engine rpm, Water Temperature, and Fuel
          - (2) View Operating Information
          - (3) Checking Periodic Inspection Items
          - (4) How to Set the Clock
          - (5) Switching-Over of the Items of “AM/PM · 24 Hours”
          - (6) Anti-Theft Settings
          - (7) Auxiliary Port Operation
        - [4] SERVICE DEALER SETTINGS
          - (1) Diagnosis
          - (2) Setting
        - [5] LIST OF WARNING ALARM DISPLAYS
          - (1) Warning Display List
          - (2) Warning Display List
          - (3) Table of DPF Warnings
          - (4) PM Clog Level and the State of the Machine
          - (5) Table of Engine System Error Numbers
      - 6. TROUBLESHOOTING (METER PANEL EDITION)
        - [1] MACHINE RELATED SYSTEM
          - (1) Engine Oil Pressure Errors
          - (2) Charging System Errors
          - (3) Fuel Sensor Errors
          - (4) Water Mixed into Fuel
          - (5) Engine System Errors
        - [2] FRONT-END SYSTEMS
          - (1) Lever Lock System Errors
          - (2) Travel 2-Speed System Error
        - [3] AUTO IDLING (AI) SYSTEM
          - (1) Accelerator Sensor Errors
          - (2) Testing the AI Pressure Switch
          - (3) Testing the AI Switch
        - [4] ANTI-THEFT (AT) SYSTEM
          - (1) Anti-Theft System Errors
        - [5] POWER SUPPLY SYSTEM
          - (1) Over Voltage
          - (2) 5V Short System Error
        - [6] COMMUNICATION SYSTEM
          - (1) CAN Communication Errors
        - [7] AUX SYSTEM
          - (1) AUX1 / AUX2/Thumb System Errors
        - [8] ANGLE BLADE SYSTEM
          - (1) Angle Blade System Error
        - [9] EP SYSTEM
          - (1) EP System Errors
      - 7. DEALER SETTING MODE FLOWCHART
  - 5 CABIN
    - MECHANISM
      - 1. AIR CONDITIONING SYSTEM
        - [1] STRUCTURE
        - [2] HOW THE MECHANISMS OF THE SYSTEM WORK
        - [3] COMPRESSOR
        - [4] AIR CONDITIONING UNIT
        - [5] CONDENSER
        - [6] RECEIVER
        - [7] PRESSURE SWITCH
        - [8] SYSTEM CONTROLS
        - [9] ADJUSTING THE AIR FLOW AND DIRECTION
        - [10] ELECTRICAL SYSTEM
          - (1) Electrical Circuits
          - (2) Relays
          - (3) Blower Switch
      - 2. WIPER
        - [1] WIPER SWITCH
        - [2] WIPER
        - [3] WIPER MOTOR
    - SERVICING
      - 1. TROUBLESHOOTING
      - 2. MAINTENANCE AND SERVICE RELATED SPECIFICATIONS
      - 3. TORQUE
      - 4. PRECAUTIONS WHEN REPAIRING THE REFRIGERANT SYSTEM
        - [1] USE OF SERVICE TOOLS
          - (1) Manifold Gauge Set
          - (2) Refrigerant Charging Hoses
          - (3) Vacuum Pump Adapter
          - (4) Electric Gas Leak Tester
          - (5) Canister Tap Valve
          - (6) T-Joint
          - (7) R134a Refrigerant Collection/Recycling Device
      - 5. INSPECTING AND CHARGING THE REFRIGERANT SYSTEM
        - [1] CHECKING THE SYSTEM WITH A MANIFOLD GAUGE
        - [2] COLLECTION, VACUUMING AND CHARGING
          - (1) Collecting Refrigerant
          - (2) Vacuuming Out the System
          - (3) Charging from the High-Pressure Side
          - (4) Charging from the Low-Pressure Side
          - (5) Inspections and Troubleshooting
      - 6. INSPECTION AND DISASSEMBLY
        - [1] CHECKS AND ADJUSTMENTS
          - (1) Compressor
          - (2) Relays
          - (3) Blower Motor
          - (4) Blower Resistor
          - (5) Blower Switch
          - (6) Servo Motor (for Temp Control)
          - (7) Pressure Switch
        - [2] DISASSEMBLY AND ASSEMBLY
          - (1) Connecting / Disconnecting AC Hoses
          - (2) Mounting and Removing the Compressor
          - (3) Connecting / Disconnecting Hoses
          - (4) Removing and Mounting the Receiver
          - (5) Removing and Mounting AC Ducts
          - (6) Removal and Installation of AC Cabin Air Inlets
      - 7. CABIN REMOVAL AND MOUNTING
        - [1] REMOVING THE CABIN
      - 8. WINDOW WASHER
        - [1] WIPER SWITCH
        - [2] COMPONENT SCHEMATIC
        - [3] WIPER MOTOR
        - [4] WASHER MOTOR
      - 9. LIGHTING DEVICES (CAB WORK LIGHT, INTERIOR LIGHT)
      - 10. REMOVAL AND INSTALLATION OF GLASS
        - [1] PREPARATION
        - [2] REMOVING GLASS
        - [3] INSTALLING GLASS
        - [4] GLASS TRIM TYPE
        - [5] HOW TO REPLACE THE GLASS OF THE RIGHT-SIDE WINDOW
      - 11. FRONT WINDOW
        - [1] ADJUSTING THE CLOSING LOCK OF THE FRONT WINDOW (TOP)
        - [2] ADJUSTING THE OPEN LOCK OF THE FRONT WINDOW (TOP)
  - Electrical Circuit Diagram
  - R REVISED CONTENTS
    - REVISED CONTENTS
      - 1. [A] Tester

KX057-4U55, U55-4………………… 1
TO THE READER………………… 4
G GENERAL……………………. 23
GENERAL………………….. 24
1 MACHINE BODY……………….. 77
SERVICING………………… 78
2 ENGINE……………………..118
GENERAL…………………..119
MECHANISM…………………138
SERVICING…………………153
3 HYDRAULIC SYSTEM…………….228
MECHANISM…………………229
SERVICING…………………314
4 ELECTRICAL SYSTEM……………511
SERVICING…………………512
5 CABIN………………………662
MECHANISM…………………663
SERVICING…………………685
ELECTRICAL DIAGRAM……………. 0
ELECTRICAL WIRING DIAGRAM…..738
ELECTRICAL CIRCUIT DIAGRAM….739

IMAGES PREVIEW OF THE MANUAL:

KUBOTA KX057-4 U55 U55-4 EXCAVATOR WORKSHOP MANUAL – PDF DOWNLOAD:PLEASE NOTE:

• This is the SAME manual used by the dealers to troubleshoot any faults in your vehicle. This can be yours in 2 minutes after the payment is made.
• Contact us at [email protected] should you have any queries before your purchase or that you need any other service / repair / parts operators manual.

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