Kubota M108S Tractor Workshop Manual

[MikePhua]

Introduction
The Kubota M108S is a robust 4WD utility tractor designed for a variety of agricultural and industrial applications. Manufactured between 2008 and 2013, it boasts a 108-horsepower engine and a comprehensive hydraulic system, making it suitable for tasks ranging from tilling to hauling heavy loads. For owners and technicians, the workshop manual serves as an essential resource for maintenance and repair.

Engine Specifications

• Model: Kubota V3800-DI-TIE2
  
• Type: Turbocharged, direct injection, 4-cylinder diesel
  
• Displacement: 3,769 cc
  
• Rated Speed: 2,600 rpm
  
• Net Power: 108 hp (80.5 kW)
  
• PTO Power: 97 hp (72.3 kW)
  
• Aspiration: Turbocharged with intercooler
  
• Air Filter: Dry type, dual element
  

This engine configuration provides a balance between power and fuel efficiency, suitable for prolonged fieldwork.

Transmission and Drivetrain

• Transmission Types:
  • 16-speed partially synchronized
    
  • 32-speed partial power shift
    
  • 24-speed partially synchronized
    
  • 48-speed partial power shift
    
• Drive: Two- or four-wheel drive
  
• Differential Lock: Mechanical rear or front-and-rear (4WD)
  
• Steering: Hydrostatic power
  
• Brakes: Hydraulic wet disc
  
• ROPS: Two-post foldable; cab with heat and air-conditioning optional
  

The variety of transmission options allows operators to select the most suitable gearing for specific tasks, enhancing efficiency and control.

Hydraulic System

• Type: Open center
  
• Capacity: 16.6 gal (62.8 L)
  
• Pressure: 2,844 psi (196.1 bar)
  
• Pump Flow:
  • Total: 29.3 gpm (110.9 lpm)
    
  • Steering: 12.1 gpm (45.8 lpm)
    
• Remote Valves: 1 to 3
  

The hydraulic system's capacity and pressure ensure efficient operation of implements and attachments, crucial for tasks like plowing and lifting.

Dimensions and Weight

• Length: 160.04 in (4065 mm)
  
• Width: 7.29 ft (2220 mm)
  
• Height: 8.78 ft (2675 mm)
  
• Wheelbase: 7.99 ft (2435 mm)
  
• Ground Clearance: 17.13 in (435 mm)
  
• Weight: 8,576 lbs (3,880 kg)
  

These dimensions contribute to the tractor's stability and maneuverability in various field conditions.

Maintenance and Repair
The workshop manual provides detailed instructions on servicing the Kubota M108S, including:

• Engine Maintenance: Procedures for oil changes, filter replacements, and cooling system checks.
  
• Transmission Service: Guidelines for checking fluid levels and addressing shifting issues.
  
• Hydraulic System Care: Instructions on fluid replacement and troubleshooting hydraulic components.
  
• Electrical System Diagnostics: Schematics and troubleshooting steps for electrical components.
  
• Clutch and Brake Adjustments: Techniques for ensuring proper engagement and performance.
  

Regular adherence to these maintenance practices can extend the tractor's lifespan and ensure optimal performance.

Safety Precautions
The manual emphasizes safety during maintenance and operation:

• Personal Protective Equipment (PPE): Always wear appropriate PPE, including gloves and safety glasses.
  
• Machine Stability: Ensure the tractor is on a stable surface before performing maintenance.
  
• Power Disconnection: Disconnect the battery when servicing electrical components.
  
• Proper Tools: Use manufacturer-recommended tools to prevent damage and ensure safety.
  

Following these safety guidelines helps prevent accidents and injuries.

Conclusion
The Kubota M108S tractor, with its powerful engine and versatile features, is a valuable asset for various agricultural tasks. The workshop manual serves as an indispensable tool for owners and technicians, providing comprehensive guidance on maintenance and repair. By following the manual's instructions and safety precautions, operators can ensure the tractor's longevity and reliable performance.