This workshop service and repair manual covers Mitsubishi Diesel Forklift Trucks, specifically models FD40N, FD45N, FD50CN, FD50N, and FD55N. These heavy-duty industrial forklifts are designed for material handling in warehouses, manufacturing facilities, and logistics operations. Known for their durability and reliability, Mitsubishi forklifts are a trusted choice in demanding environments. The S6S Diesel Engine powers these units, providing robust performance for lifting operations. This manual provides comprehensive, factory-level information to ensure the optimal uptime and longevity of your equipment.
This manual serves as a complete guide for maintaining and repairing your Mitsubishi FD-Series Diesel Forklift Truck. It includes detailed procedures for all major systems, including the cooling, electrical, powertrain, transmission, axles, brakes, steering, and hydraulic systems, as well as the S6S Diesel Engine. You will find information on maintenance schedules, lubrication instructions, diagnostic procedures with error code analysis, and troubleshooting guides. Furthermore, comprehensive overhaul instructions for key components and detailed electrical schematic diagrams are provided, making this manual an essential resource for owners, mechanics, and technicians.
Make:
Mitsubishi Forklift Trucks
Product Type:
Workshop Service Repair Manual
Product Name:
Mitsubishi Diesel Forklift Truck FD40N FD45N FD50CN FD50N FD55N Workshop Service Repair Manual
Manual Source:
Original Factory
Covered Models:
FD40N, FD45N, FD50CN, FD50N, FD55N
Fd40N Serial Prefix:
CF12C
Fd45N Serial Prefix:
CF19E
Fd50Cn Serial Prefix:
CF19E
Fd50N Serial Prefix:
CF28D
Fd55N Serial Prefix:
CF28D
Segment:
Heavy-duty industrial forklifts
Application:
Material handling in warehouses, manufacturing facilities, and logistics operations.
Key Competitors:
Toyota, Komatsu, Caterpillar, Hyster-Yale
Manual Value Proposition:
Provides comprehensive factory-level information for effective maintenance and repair, ensuring optimal uptime and longevity of the forklift.
Illustrated Content:
Features high-quality images and diagrams crucial for accurate repair and identification of components.
Primary Manual Coverage:
Mitsubishi FD-Series Diesel Forklift Trucks
Engine Manual Coverage:
Mitsubishi S6S Diesel Engine
Main Truck Manual Pages:
658
Manual Classification:
Workshop Service and Repair Manual
File Format:
ZIP (Contains Multiple PDFs)
Digital Features:
Printable, Searchable Text, Bookmarks
Major Systems:
Cooling System, Electrical System, Controllers, Power Train, Powershift Transmission, Front Axle and Reduction Differential, Rear Axle, Brake System, Steering System, Hydraulic System, Mast and Forks, S6S Diesel Engine (all major subsystems)
Maintenance Procedures:
Fan belt replacement and tensioning, Battery maintenance, Lubrication instructions, Periodic part replacement, Engine adjustments
Repair Procedures:
Removal and installation of power lines, Torque converter overhaul, Transmission valve control service, Front/Rear axle service, Brake system repair, Steering system repair, Hydraulic system component service (pump, cylinders, valves), Mast component service
Diagnostic Procedures:
Controller error codes and troubleshooting, Engine bench tests, Performance tests, Troubleshooting guides for various systems
Diagnostic Capability:
Advanced diagnostics with specific error code analysis and troubleshooting trees for electronic controllers.
Overhaul Depth:
Comprehensive overhaul instructions for key components including the engine, transmission, and hydraulic systems.
Electrical Diagrams:
Detailed electrical schematic diagrams for chassis and major components.
Service Data:
Includes maintenance standards, schedules, lubrication instructions, and special tool requirements.
PDF Quality:
High quality, suitable for printing.
Printability:
Printable without restrictions.
Binding:
N/A (Digital PDF Format)
Paper Recommendation:
Standard printing paper suitable for technical manuals.
Engine Model:
Mitsubishi S6S Diesel Engine
Engine Type:
6-Cylinder, Naturally Aspirated Diesel
Displacement:
Approximately 3.3 Liters (precise figure may vary slightly based on specific sub-variant, but typical for this class)
Horsepower Output:
Typically in the range of 50-70 HP (exact figures depend on the specific forklift model and tuning, but this is a common range for S6S in this application).
Torque Output:
Refer to individual model specifications within the manual for exact torque figures, typically optimized for low-end torque delivery required for lifting operations.
Injection System:
Indirect Injection (typical for this era/application of S6S)
Cooling System Type:
Water-cooled, with fan belt driven water pump and fan.
Lubrication System:
Forced lubrication via gear-type oil pump, with oil filter.
Transmission Type:
Powershift Transmission (Automatic)
Transmission Gearing:
Single-speed and Automatic Two-Speed variants covered, depending on the specific forklift model.
Torque Converter:
Integral component for smooth power delivery and torque multiplication.
Control Valve Service:
Detailed instructions for the single-speed powershift transmission control valve.
Transmission Fluid Type:
Specific ATF (Automatic Transmission Fluid) specification detailed in the manual, crucial for proper operation and longevity.
Forklift Class:
Class IV (Cushion Tire) Diesel Forklift
Operating Weight Range:
Approximately 3500 kg to 5500 kg (1450N to 1455N) depending on model and configuration (e.g., mast height, battery).
Load Capacity Range:
FD40N (4000 kg / 8800 lbs) to FD55N (5500 kg / 12000 lbs) at load center of 500 mm (24 inches).
Safety Compliance:
Designed to meet relevant industry safety standards for forklift operation (e.g., ANSI/UL standards for industrial trucks).
Braking System:
Hydraulic disc brakes (typically internal wet or dry) with master cylinder and brake booster system for reliable stopping power.
Operator Protection:
Integral overhead guard and robust mast structure designed to protect the operator.
Operator Interface:
Basic operator controls, including dashboard indicators for engine status, fuel level, hour meter, and warning lights. No complex infotainment systems typical of passenger vehicles.
Operator Aids:
Primary focus on mechanical and hydraulic system functionality. Electronic controllers manage transmission and potentially engine functions, providing basic diagnostics and error reporting.
Telematics:
Not a standard feature on forklifts of this era. Any telematics would be aftermarket additions.
Engine Oil Change Interval:
Typically every 250-500 operating hours or annually, refer to specific schedule in manual.
Transmission Fluid Change Interval:
Typically every 1000-2000 operating hours or biennially, refer to manual for precise interval and procedure.
Hydraulic Fluid Change Interval:
Typically every 1000-2000 operating hours or biennially, refer to manual for precise interval and procedure.
Engine Oil Specification:
Refer to manual for specific API classification (e.g., CI-4 or higher) and viscosity grade (e.g., 15W-40, 10W-30 depending on ambient temperature).
Coolant Specification:
Ethylene glycol-based coolant with corrosion inhibitors, mixed 50/50 with distilled water. Specific type and capacity detailed in the manual.
Brake Fluid Specification:
DOT 3 or DOT 4 brake fluid, depending on system requirements detailed in the manual.
Common Wear Items:
Wear on mast rollers, lift chains, hydraulic hoses, seals, and tires are common for forklifts of this age and usage.
Engine Maintenance Notes:
Regular attention to fuel system cleanliness, injector health, and cooling system integrity is vital for the S6S engine.
Transmission Maintenance Notes:
Proper fluid level and condition are critical for powershift transmission longevity; overheating can cause significant damage.
Manufacturer:
Mitsubishi Logisnext (formerly Mitsubishi Forklift Trucks / Caterpillar Lift Trucks alliance).
Series Designation:
FD-Series represents a line of reliable diesel-powered pneumatic tire or cushion tire forklifts.
Typical Production Era:
Models covered likely span from the late 1990s through the 2000s, with potential overlap into the early 2010s, based on the S6S engine and transmission technology.
Industry Standing:
Mitsubishi forklifts are generally recognized for their durability, reliability, and cost-effectiveness in demanding industrial environments.
