Takeuchi TB250-2 Mini Excavator Workshop Manual (CK8E011) (SN 125100006-)
On a TB250-2 that spends its life trenching, loading trucks, and working around utilities, this workshop manual is what I’d reach for when a job stops because something major isn’t right. It walks you through how to strip, inspect, and correctly put back key systems on this exact machine so you don’t guess your way through a repair. If, for example, the boom feels weak or jerky, I’d use this manual to trace the fault, verify settings, and then safely reinstall any hydraulic components I’ve opened up.
Applications & Use Cases
- Plan a full teardown and rebuild of major components with a logical, step-by-step sequence instead of relying on memory.
- Inspect wear points on the undercarriage, swing, and work equipment, and decide what must be replaced before it fails on site.
- Isolate hydraulic or control issues by following the recommended checks and test points to narrow down the problem.
- Verify correct alignment and routing of hoses, harnesses, and linkages during reassembly so nothing rubs through later.
- Double-check torque and reinstallation checks after replacing cylinders, pumps, or drive components to avoid repeat repairs.
FAQ
Q: Can I use this on a tablet in the field?
A: Yes, it’s practical to keep it on a tablet or laptop so you can zoom in on diagrams and search quickly while you’re at the machine.
Q: Is it worth printing parts of this manual?
A: Printing the procedures you’re doing that day is handy—you can mark notes, keep it next to the machine, and avoid getting a device greasy.
Safety Note
Always follow the manual’s support, lockout, and pressure-release steps before loosening or removing any component.
Takeuchi TB250-2 Mini Excavator Index:
- REVISION HISTORY
- FOREWORD
- Directional terms: front, rear, left, right
- Machine serial number
- Symbols used in this manual
- Manual structure
- 1. SAFETY
- SAFETY ALERT SYMBOL
- SAFETY PRECAUTIONS
- Observe all safety rules
- Wear safe clothing and protective gear
- Install an extinguisher and a first aid kit
- Lockout/Tagout (LOTO)
- Use the correct tools
- Regularly replace the safety-critical parts
- Explosionproof lighting
- Prohibit access by unauthorized persons
- Prepare the work area
- When the canopy is tilted up
- Keep the machine clean
- Stop the engine before performing maintenance
- Keep clear of the moving fan and belt
- When working under the machine
- When working on the machine
- Securing the working equipment
- Secure the engine hood and guard when they are open
- Place heavy components in a stable position
- Caution when filling with fuel or oil
- Handling of hoses
- Be careful with hot and pressurized components
- Handling of radiator
- Be careful with oils under pressure
- Release the residual pressure from the hydraulic system before performing maintenance
- Be careful with grease under pressure
- Handling of the accumulator
- Disconnect the battery
- Use caution when handling batteries
- Have a service agent repair welding cracks or other damage
- Checks after maintenance
- Disposing of wastes
- CAUTIONS WHEN WORKING
- Before starting work
- When disassembling or assembling
- When removing/installing the hydraulic unit
- When connecting/disconnecting the hoses or pipes
- Handling of seals
- Pressure adjustment for hydraulic devices
- 2. SERVICE DATA
- DIMENSIONAL DRAWING
- Machine dimensions
- Work range
- SPECIFICATION TABLE
- Performance
- Completed machine dimensions, etc.
- Main unit dimensions
- Engine
- Hydraulic equipment
- Control equipment
- Instruments
- Instruments
- Switches
- Switches
- Slew equipment
- Lower machinery
- Work equipment
- Work dimensions
- Main construction
- Hydraulic cylinder
- Digging force
- Blade
- TABLE OF MASSES
- Upper structure
- Lower structure
- Attachment
- FUEL AND LUBRICANT TABLE
- PERFORMANCE EVALUATION STANDARD
- Table of standard values
- Table of hydraulic pump assignment
- Hydraulic pump No. P1
- Hydraulic pump No. P2
- Hydraulic pump No. P3
- Hydraulic pump No. P4
- Performance inspection guideline
- 1. Engine speed
- 2. Hydraulic pressure
- 3. Cylinder operating speed
- 4. Slew speed two turns
- 5. Slewing stop flow rate
- 6. Five-minute natural travel drop
- 7. Five-minute slew natural drop
- 8. Travel speed 10 m (32.8 ft)
- 9. Travel speed five turns
- 10. Straight-ahead travel 10 m (32.8 ft)
- 11. Straight-ahead travel function check
- 12. Amount of natural cylinder drop
- 13. Backlash
- 14. Lever play
- 16. Blade levelness
- 17. Blade height
- 18. Crawler tension
- 19. Slew bearing play
- TIGHTENING TORQUE
- Hydraulic hose
- Bite-type pipe fitting for steel pipe
- Joint for piping
- Joint for piping (O-ring seal type)
- Bolts and nuts (JIS strength category 10.9)
- HYDRAULIC CIRCUIT DIAGRAM
- 3rd service hard lock specification
- ELECTRICAL CIRCUIT DIAGRAM
- Symbols in electrical circuit diagram
- Wire color symbols
- Wire color table
- Wire types
- Schematic diagram
- Cab
- Serial No.: 125100006 to 125101230
- Serial No.: 125101231 to 125101686
- Serial No.: 125101687 to 125102464
- Serial No.: 125102465 to 125105942
- Serial No.: 125105943 or later
- Canopy
- Serial No.: 125100006 to 125101230
- Serial No.: 125101231 to 125101686
- Serial No.: 125101687 to 125102464
- Serial No.: 125102465 or later
- WIRE HARNESS
- Electrical wiring assembly
- Canopy specification
- Main unit wiring assembly
- Floor wiring assembly
- Cab specification
- Main unit wiring assembly
- Floor wiring assembly
- GPS assembly
- 3G
- Serial No.: 125100006 to 125101768
- Serial No.: 125101769 or later
- LTE
- Serial No.: 125100006 to 125101768
- Serial No.: 125101769 or later
- Assembly of right control box
- Assembly of control valve
- 3rd service specification
- 3rd service hard lock specification
- Assembly of boom light
- Halogen light specification
- Wire harness
- Wire harness
- LED light specification
- Wire harness
- Wire harness
- Assembly of fuel supply pump
- Wire harness
- Serial No.: 125100006 to 125102464
- Serial No.: 125102465 or later
- Engine cover assembly
- Side cover assembly
- Canopy light assembly
- Wire harness
- Wire harness
- Wire harness
- Cab light assembly
- Assembly of rear light
- Cab assembly
- Wire harness
- Wire harness
- HYDRAULIC DEVICE LAYOUT DIAGRAM
- 3. FUNCTION
- HYDRAULIC PUMP
- Overview
- Pump appearance and ports
- Main structure and functions
- Piston pump
- Operating principle
- CONTROL VALVE
- Overview
- Functions of control valve
- Control in neutral position
- Operation of control valve
- Straight-ahead travel function
- Arm confluence function
- Anti-drift valve
- Boom priority circuit
- Auto-idle (AI) signal
- 3rd service (quick-hitch)
- Operations of main sections
- Bucket
- Boom
- Travel right
- Arm
- 3rd service (quick-hitch)
- Communication valve
- PILOT VALVE (CONTROL LEVER)
- PILOT VALVE (SWING)
- PILOT VALVE (BLADE)
- PILOT VALVE (TRAVEL)
- PROPORTIONAL SOLENOID VALVE (1ST/2ND SERVICE)
- EMERGENCY SHUT-OFF VALVE
- Neutral (Positions maintained)
- Boom cylinder raising and arm cylinder dumping operations
- Boom cylinder lowering and arm cylinder excavator operations
- Relief valve operation (When an abnormal high pressure is produced in the cylinder)
- SOLENOID VALVE (LEVER LOCK, SPEED SHIFT TRAVEL)
- Solenoid switching/relief function
- When not energized
- When energized
- Check function
- SOLENOID VALVE (3RD AUXILIARY LINE PIPING)
- SOLENOID VALVE (3RD SERVICE HARD LOCK)
- SOLENOID VALVE
- SELECTOR VALVE
- REDUCING VALVE
- CYLINDER
- Function
- Function of each part
- Rod cover assembly
- Seal system components: Bushing (4), rod packing (5), dust seal (6)
- Piston assembly
- Operation
- TRAVEL MOTOR
- Hydraulic motor
- Counter balance valve
- 2-speed mechanism
- 2nd speed control valve
- Swash plate
- Automatic 2-speed switching system
- Parking brake
- Reduction gears
- SLEW MOTOR
- Hydraulic motor
- Relief valve
- The 1st stage
- The 2nd stage
- Make-up valve
- Anti-rebound valve
- When the brake is actuated
- When the Motor Rebounds
- Parking brake
- Timer valve
- Reduction gears
- SWIVEL JOINT
- 4. DISASSEMBLY AND ASSEMBLY
- SERVICE STANDARD
- Carrier roller
- Track roller
- Sprocket
- Idler
- Pin to bushing clearance
- Angle blade
- About replacement of pin and bushing
- DRIVE EQUIPMENT
- Engine
- Engine
- Engine sub-assembly
- Engine sub-assembly
- Radiator
- Radiator
- Hydraulic pump
- Construction diagram
- Removal of hydraulic pump
- Installation of hydraulic pump
- Precautions when starting the hydraulic pump
- Fuel tank
- Fuel tank
- Fuel pump
- Construction diagram
- Removal of fuel tank
- Installation of fuel tank
- Battery
- Construction diagram
- Removal of battery
- Installation of battery
- Air cleaner
- TRAVEL EQUIPMENT
- Track roller
- Carrier roller
- Front idler
- Grease cylinder assembly
- Travel motor
- Lower frame
- Shoe guide
- Crawler belt
- Crawler belt
- Construction diagram
- Removal of rubber crawler
- Installation of rubber crawler
- Removal of steel crawler
- Installation of steel crawler
- Crawler replacement method
- Removal of carrier roller
- Installation of carrier roller
- Removal of track roller
- Installation of track roller
- Removal of idler and grease cylinder assembly
- Installation of idler and grease cylinder assembly
- Removal of travel motor
- Installation of travel motor
- SLEW EQIUPMENT
- Slew motor
- Construction diagram
- Removal of slew motor
- Installation of slew motor
- Slew bearing
- Construction diagram
- Removal of slew bearing
- Installation of slew bearing
- Swivel joint
- Swivel joint
- Construction diagram
- Removal of swivel joint
- Installation of swivel joint
- UPPER FRAME
- Upper frame
- Upper frame
- Grease piping
- Construction diagram
- Removal of upper frame
- Installation of upper frame
- Cover
- Cover
- Cover
- Construction diagram
- Removal of cover
- Installation of cover
- Assembly of cab mounting
- Assembly of cab
- Assembly of cab interior
- Assembly of cab interior
- Assembly of cab switch
- Assembly of cab switch
- Assembly of cab switch
- Assembly of cab switch
- Assembly of canopy
- Assembly of canopy switch
- Assembly of floor frame
- Assembly of floor frame
- Assembly of operator seat
- Assembly of operator seat
- Assembly of radio
- Assembly of floor mat
- Assembly of floor mat
- Assembly of floor mat
- Assembly of rain guard
- Assembly of cab light
- Assembly of rear light
- Assembly of cab light stay
- Assembly of rear light stay
- Assembly of window washer
- Construction diagram
- Removal of cab
- Installation of cab
- Removal of canopy
- Installation of canopy
- Removal of glass
- Installation of glass
- CONTROL EQUIPMENT
- Construction diagram
- Travel lever and swing pedal
- Travel lever and swing pedal
- Blade lever
- Blade lever
- Control lever piping
- Control lever piping
- Right control box
- Right control box
- Left control box
- Left control box
- Assembly of right remote control unit
- Assembly of right remote control unit
- Assembly of left remote control unit
- Disassembly and assembly
- Removal and installation of the accumulator
- WORK EQUIPMENT
- Construction diagram
- Assembly of arm
- Assembly of arm
- Assembly of arm
- Assembly of arm
- Assembly of arm
- Assembly of arm
- Assembly of bucket
- Assembly of boom
- Assembly of boom
- Assembly of boom
- Assembly of boom
- Assembly of boom
- Assembly of boom
- Assembly of boom swing
- Assembly of boom swing
- Assembly of boom light
- Assembly of blade
- Assembly of blade
- Disassembly and assembly
- Removal and installation of the bucket
- Removal and installation of the bucket link
- Releasing residual pressure
- Removal and installation of the arm
- Removal and installation of the boom
- Removal and installation of the swing bracket
- Removing and installing the angle blade assembly (angle blade installations)
- Removing and installing the blade (without angle blade)
- HYDRAULIC OIL TANK
- Hydraulic oil tank
- Construction diagram
- Removal of hydraulic oil tank
- Installation of hydraulic oil tank
- Oil level inspection and replenishment of hydraulic oil tank
- Inspection
- Replenishment
- Method for bleeding air
- Hydraulic pump
- Emergency shutoff valve
- Slew motor and cylinder
- HYDRAULIC PUMP
- Construction
- Special tools
- Inspection and adjustments
- CONTROL VALVE
- Construction diagram
- Construction diagram
- Construction diagram
- Disassembly
- Removal of relief valve assembly and anti-void valve
- Disassembly of each section (bucket, right travel, left travel, swing, 1st service, arm, slew, blade, 2nd service, and angle blade)
- Disassembly of boom section
- Disassembly of P1/P2 inlet section
- Disassembly of 3rd service section (downstream)
- Disassembly of 3rd service section (upstream)
- Disassembly of T3/P3 section
- Removal of load check valve, poppets, etc.
- Disassembly of valve housing
- Cleaning of each part
- Inspection of each part
- Assembly
- Assembly of valve housing
- Assembly of section
- Assembly of load check valves, poppets, etc.
- Installation of relief valve assembly and anti-void valve
- Relief valve maintenance procedure
- PILOT VALVE (CONTROL LEVER)
- Construction
- Special tools
- Installation jig A
- Installation jig B
- Disassembly and Assembly
- Inspection and adjustment
- PILOT VALVE (SWING, BLADE)
- Construction
- Special Jigs
- Disassembly and Assembly
- Inspection and adjustment
- PILOT VALVE (TRAVEL)
- Construction
- Disassembly and Assembly
- Special Jigs
- Disassembly
- Assembly
- Inspection and adjustment
- PROPORTIONAL SOLENOID VALVE (1ST/2ND SERVICE)
- Construction
- Disassembly and Assembly
- Inspection and adjustment
- EMERGENCY SHUTOFF VALVE
- SOLENOID VALVE (LEVER LOCK)
- Construction
- Disassembly
- Solenoid valve
- Relief valve
- Check valve
- Assembly
- Inspection and adjustment
- SOLENOID VALVE (3RD AUXILIARY LINE PIPING)
- Construction
- Disassembly and Assembly
- Inspection and adjustment
- SOLENOID VALVE (3RD SERVICE HARD LOCK)
- Construction diagram
- Disassembly and assembly
- Disassembly of solenoid valve
- Assembly of solenoid valve
- SOLENOID VALVE (2ND SERVICE ↔ 4TH SERVICE)
- Construction diagram
- Disassembly and assembly
- Inspection and adjustment
- SOLENOID VALVE (ANGLE BLADE)
- Construction
- Disassembly and Assembly
- Inspection and adjustment
- SOLENOID VALVE (BLADE FLOAT)
- Construction
- Disassembly and Assembly
- Inspection and adjustment
- SELECTOR VALVE
- Construction
- Disassembly and Assembly
- Inspection and adjustment
- REDUCING VALVE
- Construction diagram
- Disassembly and assembly
- Inspection and adjustment
- CYLINDER (BOOM, ARM, BUCKET, SWING, BLADE, ANGLE BLADE)
- Boom cylinder
- Boom cylinder
- Arm cylinder
- Arm cylinder
- Bucket cylinder
- Swing cylinder
- Blade cylinder
- Angle blade cylinder
- Disassembly and assembly
- Service standard
- Inspection after assembly
- Tools required
- Special jig
- Disassembly
- Assembly
- TRAVEL MOTOR
- Construction
- Hydraulic motor
- Reduction gears
- Counterbalance valve, 2nd-speed control valve, relief block assembly
- Assembly
- Counter balance valve and hydraulic motor
- Reduction gears
- Inspection and adjustment
- SLEW MOTOR
- Construction
- Hydraulic motor
- Reduction gears
- Brake valve
- Special tools
- Disassembly
- Slew motor
- Brake valve and hydraulic motor
- Reduction gears
- Anti-rebound valve
- Assembly
- Anti-rebound valve
- Brake valve and hydraulic motor
- Reduction gears
- Slew motor
- Inspection and adjustment
- SWIVEL JOINT
- Construction
- Disassembly and Assembly
- Inspection and adjustment
- Inspection procedures and remedial actions
- Use limit for parts
- Inspection after assembly
- SWIVEL JOINT (EQUIPPED WITH ANGLE BLADE)
- Construction
- Disassembly and Assembly
- Removal jig
- Disassembly
- Assembly
- Inspection and adjustment
- Inspection procedures and remedial actions
- Use limit for parts
- Inspection after assembly
- WIRE HARNESS
- MAIN UNIT HYDRAULIC PIPING & LOWER HYDRAULIC PIPING
- Main unit hydraulic piping
- Main unit hydraulic piping
- Main unit hydraulic piping
- Main unit hydraulic piping
- Main unit hydraulic piping
- Main unit hydraulic piping
- Main unit hydraulic piping
- Lower hydraulic piping
- Lower hydraulic piping
- 5. TROUBLESHOOTING
- TROUBLESHOOTING
- Notes on the malfunction diagnosis and repair
- GENERAL
- The engine does not start.
- 1. Did any error code occur?
- 2. Does the starter motor rotate?
- 3. Is there enough fuel?
- 4. Is the fuel filter clogged?
- The engine speed cannot be increased.
- 1. Did any error code occur?
- All the attachments and travel motors are inoperable.
- 1. Did any vehicle error code occur?
- 2. Is the hydraulic oil above the specified amount?
- 3. Is the pilot pressure within the standard value range?
- 4. Is the main pressure within the standard value range?
- All the attachments and travel motors are operable but are slow.
- 1. Does the engine speed reach the maximum?
- 2. Is the hydraulic oil above the specified amount?
- 3. Is abnormal sound coming from the hydraulic pump?
- 4. Is the pilot pressure within the standard value range?
- 5. Is the main pressure within the standard value range?
- TRAVEL
- The travel motors are inoperable (both left and right or one of them).
- 1. Do hydraulic devices other than the travel motor operate?
- 2. Is the discharge pressure from the pilot valve (for travel operation) normal?
- 3. Is the discharge pressure from the control valve (travel section) normal?
- 4. Is the discharge pressure from the swivel joint normal?
- The vehicle veers to one side with the left or right travel speed slowing down when it travels forward or backward.
- 1. Is the tension of the crawler normal?
- 2. Is any foreign matter trapped in the crawler?
- 3. Is the discharge pressure from the pilot valve (for travel operation) normal?
- 4. Is the discharge pressure from the control valve (travel section) normal?
- 5. Is the discharge pressure from the swivel joint normal?
- The travel speed cannot be changed.
- 1. Is the voltage applied to the solenoid valve (for variable travel speed)?
- 2. Is the variable travel speed pressure from the solenoid valve (for variable travel speed) normal?
- 3. Is the variable travel speed pressure (pilot pressure) from the swivel joint normal?
- SLEW
- The vehicle cannot slew.
- 1. Do hydraulic devices other than the slew operate?
- 2. Is the slew pressure within the standard value range?
- 3. Is the hydraulic piping that supplies the slew brake release pressure abnormal?
- 4. Does the slew bearing rotate?
- 5. Is the discharge pressure from the pilot valve (for slew operation) normal?
- 6. Is the discharge pressure from the control valve (slew section) normal?
- The vehicle cannot slew to the left or right.
- 1. Is the slew pressure within the standard value range?
- 2. Is the hydraulic piping that supplies the slew brake release pressure abnormal?
- 3. Is the discharge pressure from the pilot valve (for slew operation) normal?
- 4. Is the discharge pressure (main pressure) from the control valve (slew section) normal?
- 5. Is the slew relief valve normal?
- The vehicle can slew but is slow and less powerful.
- 1. Do hydraulic devices other than the slew operate normally?
- 2. Is the slew pressure below the standard value range?
- 3. Is the slew relief valve or relief valve seat abnormal?
- 4. Is the discharge pressure from the pilot valve (for slew operation) normal?
- 5. Is the discharge pressure from the control valve (slew section) normal?
- The slewing stop flow amount is large or the vehicle cannot stop.
- 1. Is the slew pressure below the standard value range?
- 2. Can the pilot valve (for slew operation) be in the neutral status?
- 3. Can the control valve (slew section) be in the neutral status?
- BOOM
- The boom cannot rise or drop.
- 1. Do hydraulic devices other than the boom operate?
- 2. Is the discharge pressure from the pilot valve (for boom operation) normal?
- 3. Is the discharge pressure from the control valve (boom section) normal?
- The boom can rise and drop but is slow and less powerful.
- 1. Do hydraulic devices other than the boom operate normally?
- 2. Is the discharge pressure from the pilot valve (for boom operation) normal?
- 3. Is the discharge pressure from the control valve (boom section) normal?
- 4. Is the boom cylinder internally leaking?
- The boom drops temporarily when the boom control lever is slowly pulled.
- 1. Is the boom cylinder internally leaking?
- The amount of boom natural drop is large.
- 1. Is the boom cylinder internally leaking?
- 2. Is the boom emergency shutoff valve internally leaking?
- ARM
- The arm cannot be pushed or pulled.
- 1. Do hydraulic devices other than the arm operate?
- 2. Is the discharge pressure from the pilot valve (for arm operation) normal?
- 3. Is the discharge pressure from the control valve (arm section) normal?
- The arm can be pushed and pulled but is slow and less powerful.
- 1. Do hydraulic devices other than the arm operate normally?
- 2. Is the discharge pressure from the pilot valve (for arm operation) normal?
- 3. Is the discharge pressure from the control valve (arm section) normal?
- The amount of arm natural drop is large.
- 1. Is the arm emergency shutoff valve internally leaking?
- BUCKET
- The bucket cannot dig or remove the ground.
- 1. Do hydraulic devices other than the bucket operate?
- 2. Is the discharge pressure from the pilot valve (for bucket operation) normal?
- 3. Is the discharge pressure from the control valve (bucket section) normal?
- The bucket can dig and remove the ground but is slow and less powerful.
- 1. Do hydraulic devices other than the bucket operate normally?
- 2. Is the discharge pressure from the pilot valve (for bucket operation) normal?
- 3. Is the discharge pressure from the control valve (bucket section) normal?
- The amount of bucket natural drop is large.
- 1. Is the hydraulic piping connected to the bucket cylinder failing, such as leaking?
- SWING
- The vehicle cannot swing.
- 1. Do hydraulic devices other than the swing operate?
- 2. Is the discharge pressure from the pilot valve (for swing operation) normal?
- 3. Is the discharge pressure from the control valve (swing section) normal?
- The vehicle can swing but is slow and less powerful.
- 1. Do hydraulic devices other than the swing operate normally?
- 2. Is the discharge pressure from the pilot valve (for bucket operation) normal?
- 3. Is the discharge pressure from the control valve (swing section) normal?
- The amount of swing natural drop is large.
- 1. Is the hydraulic piping connected to the swing cylinder failing, such as leaking?
- BLADE
- The blade does not rise or drop.
- 1. Do hydraulic devices other than the blade operate?
- 2. Is the discharge pressure from the pilot valve (for blade operation) normal?
- 3. Is the discharge pressure from the control valve (blade section) normal?
- 4. Is the discharge pressure from the swivel joint normal?
- The blade can rise and drop but is slow and less powerful.
- 1. Do hydraulic devices other than the blade operate normally?
- 2. Is the discharge pressure from the pilot valve (for blade operation) normal?
- 3. Is the discharge pressure (main pressure) from the control valve (blade section) normal?
- 4. Is the discharge pressure (main pressure) from the swivel joint normal?
- The amount of blade natural drop is large.
- 1. Is the hydraulic piping connected to the blade cylinder failing, such as leaking?
- SERVICE
- The attachment connected to the 1st service is inoperable.
- 1. Do hydraulic devices other than the 1st service operate?
- 2. Is the voltage applied to the proportional solenoid valve (for 1st service)?
- 3. Is the pressure on the 1st service A and B within the standard value range?
- 4. Is the discharge pressure from the proportional solenoid valve (for 1st service) normal?
- The attachment connected to the 2nd service is inoperable.
- 1. Do hydraulic devices other than the 2nd service operate?
- 2. Is the voltage applied to the solenoid valve (for 2nd service and 4th service switching)?
- 3. Is the voltage applied to the proportional solenoid valve (for 2nd service)?
- 4. Is the pressure on the 2nd service A and B within the standard value range?
- 5. Is the discharge pressure from the proportional solenoid valve (for 2nd service) normal?
- 6. Is the discharge pressure from the control valve (2nd service section) normal?
- The quick-hitch cannot be locked (3rd service).
- 1. Do hydraulic devices other than the quick-hitch operate?
- 2. Is the pressure on the 3rd service A normal?
- 3. Is the hydraulic piping connected to the 3rd service A failing?
- The quick-hitch cannot be unlocked (3rd service).
- 1. Do hydraulic devices other than the quick-hitch operate?
- 2. Is the pressure on the 3rd service B within the standard value range?
- 3. Is the voltage applied to the solenoid valve (for 3rd service)?
- 4. Is the discharge pressure from the solenoid valve (for 3rd service) normal?
- HYDRAULIC PUMP
- CONTROL VALVE
- 1. Control valve in general
- 2. Relief valve
- 3. Hydraulic control in general
- PILOT VALVE
- PILOT VALVE (SWING, BLADE)
- PILOT VALVE (TRAVEL)
- SOLENOID VALVE (LEVER LOCK)
- SOLENOID VALVE (3RD SERVICE)
- SOLENOID VALVE (ANGLE BLADE)
- REDUCING VALVE
- CYLINDER
- TRAVEL MOTOR
- Hydraulic motor
- 2nd speed control
- Parking brake
- SLEW MOTOR
- Hydraulic motor, brake valve
- Parking brake
- 6. OTHER
- MAINTENANCE SOFTWARE MANUAL
- CONTENTS
- 1. OUTLINE
- 2. CONNECTION METHODS
- 2-1. Items needed
- 2-2. Installation method
- 2-2-1. Installation of the PLUS+1 Service Tool
- 2-2-2. Installation of the maintenance tool driver
- 2-3. Connection to the machine and startup of the maintenance software
- 3. DESCRIPTION OF FUNCTIONS
- 3-1. Home (Main screen)
- 3-2. Machine status
- Inputs
- Outputs
- CAN
- Feedback
- Error Code
- Vehicle status
- 3-3. Engine status
- 3-4. AUX1
- AUX1
- Grip setting
- Stroke setting
- Current setting
- 3-5. AUX2_AUX4
- AUX2_AUX4
- Grip setting
- Stroke setting
- Current setting
- 3-6. Other
- Lift alarm
- Misc
- Option
- Pattern Change
- Immobilizer
- Hourmeter man
- Engine auto stop
- AIR CONDITIONER
- [1] Product overview
- 1. Overview
- 2. Specification
- [2] Operation and handling
- 1. Blowoff port and control
- 2. Description for control
- 3. Operation guideline
- 4. Cautions for handling air conditioner
- 5. Handling of air conditioner
- [3] Structure, operation and control
- 1. Structure
- 2. Operation and control of air conditioner
- [4] Inspection and maintenance
- 1. Air conditioner inspection and maintenance table
- 2. Daily inspection and handling of air conditioner
- 3. Maintenance
- [5] Refrigerant filling
- 1. Precautions for refrigerant filling (safety aspect)
- 2. Vacuuming
- 1. Refrigerant filling
- [6] Troubleshooting
- 1. Troubleshooting using the gauge manifold
- 2. Malfunction diagnosis table
- VEHICLE ERROR CODES
- Diagnostics procedures for malfunctions and failure
- Repair procedures
- How to check the detection ports
- TABLE OF VEHICLE ERROR CODES
- TABLE OF ENGINE ERROR CODES
Takeuchi
