Takeuchi TL8 Track Loader Workshop Manual (CU8E014) (SN 200800002-)
When you’re running a TL8 in dirt work, grading, or loading trucks all day, this workshop manual is what I’d pull out any time we’re past simple checks and into real repairs. It walks you through how to strip, inspect, and correctly reinstall the major components so the loader goes back to work without odd noises, leaks, or fault lights. For example, if the machine starts tracking weak on one side after a hard week in mud, I’d use this book to trace the problem from the controls through the hydraulic and drive components in a logical order instead of guessing.
Applications & Use Cases
- Planning a major teardown of a drive motor, final drive, or key hydraulic component, step by step.
- Inspecting wear points on undercarriage, linkage, and loader arms so you don’t miss hidden cracks or loose hardware.
- Verifying reassembly after replacing seals, hoses, or pumps to make sure routing, alignment, and torque are correct.
- Tracing intermittent faults like slow lift, weak travel, or jerky controls using structured troubleshooting sequences.
- Training newer techs on proper TL8 procedures so they don’t rely on guesswork or habits from other brands.
FAQ
Q: Can I use this manual on a tablet in the field?
A: Yes, it’s practical on a tablet; you can zoom diagrams and search text, just keep the device protected from dust and moisture.
Q: Is it worth printing sections of this manual?
A: For big jobs, I print the key procedures so I can mark notes, keep it next to the machine, and not worry about dropping a phone in the mud.
Safety Note
Always follow the lockout, support, and pressure-relief steps in the manual before loosening any component on the TL8.
Takeuchi TL8 Track Loader 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
- 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
- SPECIFICATION TABLES
- Performance
- Dimensions
- Mass
- Engine
- Hydraulic drive system
- Brake device
- Undercarriage
- Operating device
- Working equipment
- Hydraulic system
- TABLE OF MASSES
- LUBRICANT AND FUEL CHART
- PERFORMANCE CRITERIA
- Standard values table
- Hydraulic pump assignment table
- Pump P1
- Pump P2
- Pump P3
- Pump P4
- Methods for inspecting performance
- Hydraulic oil pressure
- Travel speed (5 revolutions)
- Travel speed (10 m)
- Straight-ahead traveling
- Natural travel drop
- Arm cylinder speed
- Bucket cylinder speed
- Natural cylinder drop
- Track tension
- Level of bucket front edge
- 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
- Electrical circuit diagram
- Wire harness
- 3 FUNCTION
- HST PUMP
- Gear pump
- CONTROL VALVE
- Operation when arm-raising operation is activated:
- Operation when arm-lowering operation is activated:
- Operation when the bucket-tilt-backward operation is activated:
- Operation when the arm-float is turned off:
- Operation when the arm-float is activated:
- Load check valve
- Main relief valve
- The relief valve remains turned off:
- The relief valve is activated:
- Port relief valve
- Relief operation:
- Valve suction operation:
- Control valve (high flow)
- SUB VALVE
- When the solenoid valve A is not energized:
- When the solenoid valve A is energized:
- When the solenoid valve B is not energized:
- When the solenoid valve B is energized:
- Pilot valve
- PROPORTIONAL SOLENOID VALVE
- Proportional control solenoid valve
- Cylinders
- TRAVEL MOTOR
- Hydraulic motor
- 2-speed mechanism
- During 1st-speed operation:
- During 2nd-speed operation:
- Parking brake
- Reduction gears
- 4 DISASSEMBLY AND ASSEMBLY
- SERVICE STANDARDS
- Track roller A
- Track roller B
- Sprocket
- Idler
- Clearance for pin and bushing
- DRIVE SYSTEM
- Engine
- Construction
- Removing the engine
- Installing the engine
- Hydraulic pump
- Construction
- Removing the hydraulic pump
- Installing the hydraulic pump
- Bleeding air from the HST pump
- Fuel tank
- Construction
- Removing the fuel tank
- Installing the fuel tank
- TRAVEL SYSTEM
- Removing the crawler belt
- Installing the crawler belt
- Removing the track roller
- Installing the track roller
- Removing the idler and track adjuster
- Installing the idler and the track adjuster
- Removing the travel motor
- Installing the travel motor
- FRAME
- Tilting up the canopy and cab
- How to raise (tilt up) the canopy and cab
- How to lower the canopy/cab
- Lift arm stopper
- How to install the stopper:
- How to remove the stopper:
- Floor frame
- Construction
- Removing the floor frame
- Installing the floor frame
- Cover
- Construction
- Removing the covers
- Installing the covers
- Canopy/cab
- Construction
- Removing the canopy/cab
- Installing the canopy/cab
- Replacing glass window panes
- Installing glass window panes
- OPERATING DEVICE
- ATTACHMENTS
- HYDRAULIC OIL TANK
- Construction diagram
- Assembly of hydraulic oil tank
- Disassembly and assembly
- Removing the hydraulic tank
- Installing the hydraulic tank
- Replenishing the hydraulic oil
- Bleeding the air
- HST PUMP
- Construction
- Pump assembly (1/4)
- Pump assembly (2/4)
- Pump assembly (3/4)
- Pump assembly (4/4)
- Disassembly
- Assembly
- Inspection and adjustment
- Checking the parts
- Adjusting the rotational torque of the servo piston
- Measurement of the servo piston’s rotational torque
- Neutral adjustment of the pump
- Adjustment of displacement limiter
- GEAR PUMP
- Construction
- Disassembly
- Inspection and adjustment
- Checking the parts
- Test operation
- Measuring the discharge volume
- GEAR PUMP (HIGH FLOW)
- Construction
- Disassembly
- Inspection and adjustment
- Checking the parts
- Test operation
- Measuring the discharge volume
- Control Valve
- Control valve (high flow)
- SUB VALVE
- Construction
- Disassembly and assembly
- General precautions
- Disassembly
- Inspection and adjustment
- Pilot valve
- PROPORTIONAL CONTROL SOLENOID VALVE
- PROPORTIONAL CONTROL SOLENOID VALVE (ACTIVE POWER CONTROL)
- CYLINDERS
- TRAVEL MOTOR
- Construction
- Hydraulic motor 1/2
- Hydraulic motor 2/2
- Reduction gears
- Special tools
- Disassembly
- Reduction gears
- Hydraulic motor
- Floating seal
- Assembly
- Floating seal
- Hydraulic motor
- Reduction gears
- Inspection and adjustment
- 5 TROUBLESHOOTING
- About the troubleshooting section
- OVERALL MACHINE
- TRAVELING
- Traveling fails.
- Right or left travel speed decelerates and the machine veers to one side.
- Operating temperature of the travel system is too high.
- 2nd-speed travel is not possible.
- LIFT ARM
- BUCKET
- AUXILIARY HYDRAULICS
- HST PUMP
- Gear pump
- Control valve
- SUB VALVE
- Pilot valve
- Solenoid valve
- Cylinders
- Travel motor
- 6 Other
- MAINTENANCE SOFTWARE MANUAL
- CONTENTS
- 1. OUTLINE
- 2. CONNECTION METHODS
- 2-1. Items needed
- 2-2. Installation of the PLUS+1 GUIDE Service Tool
- 2-3. Installation of the Maintenance Tool driver
- 2-4. Connection to the machine and startup of the Maintenance Software
- 3. DESCRIPTION OF FUNCTIONS
- 3-1. Home (Main screen)
- 3-2. Status
- 3-2-1. Machine Status
- 3-2-2. Engine Status
- 3-3. Configuration menu
- 3-3-1. AUX1 Settings
- 3-3-2. Other
- AIR CONDITIONER
- AIR CONDITIONER SYSTEM
- Overview of System Operation
- Truck and Heavy Equipment Systems
- Air Conditioner—System Operation
- Heater System Operation
- Environmental Effects on System Operation
- Chapter Review
- Inspection and Maintenance without gauges
- Discussion of Inspection & Maintenance Survey Results
- Visual Inspection – System Off
- Electrical System Inspection
- Performance Inspection – Engine Running
- Heater System Inspection
- Preventive Maintenance Worksheet
- Chapter Review
- Troubleshooting & Service Procedures
- Troubleshooting Overview
- The Key–Understanding System Function
- A Troubleshooting Example
- Manifold Gauge Set Installation
- Troubleshooting by Manifold Gauge Set Readings
- Review of Frequent Problem Areas
- Conclusion
- Electrical wiring diagram
- Option Selection
- Vehicle error codes
Takeuchi
