maximal FD50-70T MWF - User Manual

5-10t Internal Combustion Counterbalance Forklift Truck Operation & Maintenance Manual
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Introduction
This manual has mainly introduced the items related to performance, structure, operation,
maintenance, as well as service, and other aspects of M portfolio 5-10t forklift trucks, in order
for operators to understand the forklift trucks, and to use and maintain the trucks correctly.
During the application of forklift trucks, user’s operators and equipment management
personnel involved shall carefully observe the requirements and specifications for forklift
trucks in this manual, for the forklift trucks to regularly maintain a good technical condition.
Due to our continuous improvement of the forklift truck products, the items of this manual are
subject to alteration and may vary slightly from the real forklift trucks without prior notice,
for which your kind understanding is expected.
Note: The type code in this manual is different from the model on product data plate and
certificate of conformity. The type code of this series of trucks has covered engine and its
modification code.
Example:
FD50T — M W F
Isuzu 6BG1 Engine
Imported
Maximal
Model

Summary

5. Brake System

5.2 Power Brake

System using brake pedal, accumulator, and valve for braking.

6. Steering System

6.1 Steering Unit

Describes the steering unit and control device.

7. Hydraulic System

7.1 Overview

Components of the hydraulic system: pumps, valve, steering unit.

7.2 Oil Pump

7.3 Multi-way Valve

8. Lift Cylinder and Tilt Cylinder

8.1 Lift Cylinder

Details the single-action cylinders responsible for mast lifting.

8.2 Isolating Valve

8.3 Limiting Valve

8.4 Tilting Cylinder

Explains the double-action tilt cylinders for mast tilting.

9. Lifting System

9.1 Overview

Describes the two-stage telescopic mast type for lifting operations.

9.2 Outer & Inner Mast

9.3 Fork Carriage

9.4 Adjustment of Lifting System

I. Safety Rule for Drive and Operation of Forklift Truck

V. Operation of Forklift Truck

General principles for operating the forklift truck safely.

VII. Routine Maintenance of Forklift Truck

1. Key Points for Startup

2. Oils, Greases, and Anti-freeze Fluids Used for Forklift Truck

Lists recommended oils, greases, and fluids for maintenance.

II. Main Technical Parameters for Forklift Truck

IV. Structure, Principle, Adjustment, and Maintenance of Forklift Truck

1. Power System

Overview of engine, fuel, cooling, and exhaust systems.

1.2 Engine Configuration

Details various engine types used in forklift models.

1.3 Fuel System

1.5 Examination and Adjustment

Outlines regular examinations and adjustments for engine maintenance.

1.5.1 Air Filter

1.5.2 Fuel Filter

1.5.3 Engine Oil Filter

1.5.5 Fastening of Bolts for Engine Cylinder Head

Specifies tightening torques and sequence for cylinder head bolts.

1.5.6 Adjustment of Valve Clearance

Details the process for adjusting valve clearance.

1.5.7 Confirmation of Ignition Time for Fuel Injection

Steps to confirm the correct ignition timing for fuel injection.

1.5.8 Adjustment of Ignition Time for Fuel Injection

Procedure for adjusting the ignition timing for fuel injection.

1.5.9 Determination of Compression Pressure

2. Electrical System

2.2 Brief Introduction about Operation

3. Transmission Device

3.1 Overview

3.2 Torque Converter

3.4 Hydraulic Clutch

3.5 Control Valve and Inching Valve

3.6 Oil Circuit System for Torque Converter

3.8 Failure Removal

Guides on troubleshooting common transmission failures.

4. Drive Axle

4.2 Main Transmission and Speed Differential

4.3 Wheel-sided Reducer

4.4 Failure Removal

Troubleshooting guide for drive axle oil leaks and noise.

5.2.2 Brake Valve

Energy Accumulator Working Process

5.3 Vacuum Power Brake

5.3.1 Vacuum Booster and Brake Master Cylinder

Describes the vacuum booster and master cylinder assembly.

5.3.3 User Notices

5.3.4 Failure and Cause Analysis

Analysis of common failures and their causes in the vacuum brake system.

5.4 Wheel Brake

5.4.1 Wheel Brake (For 5-7 t Trucks)

5.5 Parking Brake

5.6 Failure Removal

6.1.2 Operating Principle

6.1.4 Examination and Maintenance of Steering Unit

Notices for Assembly

6.1.5 Failure and Removal for Steering Unit

6.3 Failure Removal for Steering System

6.4 Steering Axle

6.4.1 Steering Axle Body

6.4.2 Left-Right Steering Knuckle Assembly

6.4.4 Steering Cylinder

7.9 Oil Circuit of Hydraulic System (Main Oil Circuit)

7.10 Maintenance

7.10.1 Disassembly of Multi-way Valve

7.10.2 Reassembly of Multi-way Valve

maximal FD50-70T MWF Specifications

General

Model	FD50-70T MWF
Power Type	Diesel
Tire Type	Pneumatic
Rated Capacity	5000 kg
Lift Height	3000-6000 mm
Mast Type	Triple Stage
Weight	8.6-9.9 t
Battery Voltage	12 V
Overall Width	1450 mm
Lift Speed (loaded/unloaded)	480 mm/s (loaded), 550 mm/s (unloaded)