Komatsu FB10EX-11 FB14EX-11 FB15EX-11 FB18EX-11 FB20EX-11 FB25EX-11 FB30-11 Electric Lift Truck Shop Manual

Description

Komatsu FB10EX-11 to FB30-11 Electric Lift Truck Shop Manual

This Komatsu FB10EX-11 FB14EX-11 FB15EX-11 FB18EX-11 FB20EX-11 FB25EX-11 FB30-11 Electric Lift Truck Shop Manual is a comprehensive service and repair guide covering the full range of Komatsu electric counterbalanced forklifts from the 1.0-ton FB10EX-11 through to the 3.0-ton FB30-11. It encompasses both the standard EX models and the EXG variants, providing complete coverage for maintenance, troubleshooting, disassembly, assembly, and specification lookup.

File Details

• Manual Type: Shop Manual
• Brand: Komatsu
• Equipment Type: Electric Lift Truck (Forklift)
• Models Covered: FB10EX-11, FB14EX-11, FB15EX-11, FB18EX-11, FB15EXG-11, FB18EXG-11, FB20EX-11, FB25EX-11, FB20EXG-11, FB25EXG-11, FB30-11
• Serial Number Ranges: 807001 and up (1.0, 1.35, 1.5, 1.75 ton models); 814001 and up (2.0, 2.5, 3.0 ton models)
• Language: English
• File Format: PDF
• Page Count: 400+

Chapters Covered

• 10. General and Specifications — Outside view and specifications for all models, periodic replacement of consumable parts, safety items for maintenance, standard tightening torque for bolts and pipe joints, Loctite application procedures, conversion tables
• 20. Testing and Adjusting — Motor inspection (brush height, spring pressure, commutator diameter, undercut depth), battery specific gravity, controller input voltage and fuse capacities, transfer case oil level, tire inflation and groove depth, steering wheel play, brake pedal and parking brake adjustment, wheel brake adjustment, hydraulic tank oil level, rear axle play adjustment, mast roller shim adjustment, hydraulic drift measurement, brake air bleeding
• 30. Removal and Installation — Weight of each unit for all models, general disassembly and assembly drawing, mast removal and installation, lift cylinder removal and installation, power train (front axle + transfer + drive motor) removal and installation, rear axle removal and installation, battery removal and installation, EPS actuator, steering gear box, hydraulic pump and pump motor
• 40. Disassembly and Assembly — Transfer case, differential (both 1.0-1.75 ton and 2.0-3.0 ton versions), front axle, brake master cylinder, wheel brake, steering gear box, EPS actuator, rear axle, lift cylinder, tilt cylinder, hydraulic pump, control valve (proportional solenoid valve spec), drive motor
• 50. Maintenance Standard — Inspection criteria and repair limits for transfer, differential, front axle, brake master cylinder, wheel brake, rear axle, lift cylinder, tilt cylinder, control valve, hydraulic pump, mast/fork carriage/fork, drive motor. Includes standard sizes, repair limits, and remedy procedures
• 60. Structure and Function — Power train overview and system diagrams, travel system, front and rear wheels, braking device (regenerative brake system), wheel brake, brake pedal, parking brake, steering system, electric power steering (EPS), EPS actuator, torque sensor and gear box, steering linkage, electrical system circuit diagrams, rear axle, hydraulic system, lift cylinder, tilt cylinder, hydraulic circuit diagram, work equipment control lever, hydraulic control valve (proportional solenoid valve), work equipment (mast), power connector for optional devices, control unit, operating devices (meter panel, switches), meter panel functions and displays
• 70. Troubleshooting — Controller self-diagnosis function, action to take when failure codes are displayed, control block diagram, main controller checks, sub controller checks, failure codes list for 1.0-2.5 ton and 3.0 ton models, self-diagnosis logic table, voltage check tables for all connectors, drive motor troubleshooting, charger troubleshooting
• 80. Yearly Inspection Criteria — Starting motor and pump motor inspection (brush wear, spring fatigue, commutator condition), battery inspection (electrolyte level, specific gravity, terminal condition), controller inspection (contactor, potentiometer, microswitch, cut-off current, fuses, wiring), power train (transfer oil), travel system (tires, hub bolts, rim, wheel bearing, front axle), steering system (steering wheel, gear box, linkage, knuckle, rear axle, power steering), brake system (brake pedal, parking brake, brake piping, travel brake, brake drum and shoe, back plate), cargo handling system (fork, mast, chain, chain wheel, attachments, cylinder, hydraulic pump, hydraulic tank, control lever, control valve)

The Komatsu FB10EX-11 to FB30-11 Electric Lift Truck Shop Manual is organized to support every level of service work. The testing and adjusting chapter begins with detailed inspection tables that specify exactly what to check and what values indicate normal operation versus wear that requires correction. These tables are model-specific, so you get the right specifications for the FB10EX-11, FB14EX-11, FB15EX-11, and FB18EX-11 separately from the FB20EX-11, FB25EX-11, and FB30-11.

The removal and installation procedures are supported by unit weight tables — essential information when planning a repair that requires lifting equipment. The manual provides weights for the power train, drive motor, front axle, rear axle, counterweight, mast, cylinders, and other major components across all model ranges.

For disassembly and assembly, the manual provides exploded view diagrams that show how components fit together, along with the tightening torques and special instructions needed to reassemble them correctly. The differential chapter, for example, covers both the 1.0-1.75 ton and 2.0-3.0 ton versions with their different specifications, and the brake chapters cover the variations between model ranges.

Diagnostic Depth

The troubleshooting chapter is where this manual really stands out for modern electric lift trucks. The controller system uses a self-diagnosis function that displays failure codes on the meter panel. This manual lists every failure code with its meaning, the conditions under which it is detected, and the recommended repair procedure.

For example, when failure code E-01 appears — indicating the travel power module is shorted — the manual explains exactly which components to check (TMDU, TMDV, TMDW power modules), what wiring harnesses to inspect, and how to determine whether the power supply board needs replacement. Similarly, E-50 points to the PS main transistor or its drive circuit, with a step-by-step diagnostic procedure covering the PS motor, wiring harnesses, and EPS board.

The voltage check tables are equally detailed. For the main controller, the manual provides reference voltages for every connector pin under multiple operating conditions: key ON with all switches off, just before driving the travel motor, while the travel motor is driven, when the travel motor is loaded heavily, while regenerating, and during EPS operation. This allows a technician to pinpoint exactly where a circuit is failing.

Model Coverage

This shop manual covers the following Komatsu electric lift truck models:

• FB10EX-11 — 1.0 ton capacity, AC 7.3 kW drive motor, DC 9.0 kW pump motor
• FB14EX-11 — 1.35 ton capacity, AC 7.3 kW drive motor, DC 9.0 kW pump motor
• FB15EX-11 — 1.5 ton capacity, AC 7.3 kW drive motor, DC 9.0 kW pump motor
• FB18EX-11 — 1.75 ton capacity, AC 7.3 kW drive motor, DC 9.0 kW pump motor
• FB15EXG-11 — 1.5 ton capacity, AC 7.3 kW drive motor, DC 9.0 kW pump motor
• FB18EXG-11 — 1.75 ton capacity, AC 7.3 kW drive motor, DC 9.0 kW pump motor
• FB20EX-11 — 2.0 ton capacity, AC 10.3 kW drive motor, DC 10.0 kW pump motor
• FB25EX-11 — 2.5 ton capacity, AC 10.3 kW drive motor, DC 10.0 kW pump motor
• FB20EXG-11 — 2.0 ton capacity, AC 10.3 kW drive motor, DC 10.0 kW pump motor
• FB25EXG-11 — 2.5 ton capacity, AC 10.3 kW drive motor, DC 10.0 kW pump motor
• FB30-11 — 3.0 ton capacity, AC 9.7 kW drive motor, DC 12.6 kW pump motor

Serial number ranges are 807001 and up for the 1.0 through 1.75 ton models, and 814001 and up for the 2.0 through 3.0 ton models.

What This Manual Enables You to Do

With this Komatsu FB10EX-11 FB14EX-11 FB15EX-11 FB18EX-11 FB20EX-11 FB25EX-11 FB30-11 Electric Lift Truck Shop Manual, you can:

• Diagnose controller faults using the failure code list and voltage check tables
• Test and adjust the EPS system, including torque sensor voltage measurement and potentiometer adjustment
• Measure hydraulic drift to determine if cylinder packings or control valve components need replacement
• Disassemble and reassemble the transfer case, differential, and front axle using the exploded diagrams and tightening torques
• Service the braking system, including wheel cylinders, master cylinder, brake shoes, and automatic adjusters
• Adjust the meter panel settings for travel power, lift speed, tilt speed, regeneration strength, and other performance characteristics
• Perform the yearly inspection according to the criteria in section 80, with specific values for brush wear, electrolyte specific gravity, contactor resistance, tire pressure, brake lining thickness, chain elongation, and more
• Troubleshoot the charger system
• Understand the structure and function of the power train, travel system, braking device, steering system, electrical system, hydraulic system, and work equipment

Why Correct Specifications Matter

Electric lift trucks operate with high-voltage battery systems, AC inverter drives, and regenerative braking. Incorrect adjustments can lead to premature component failure, reduced performance, or unsafe operating conditions. The maintenance standards in this manual provide the exact values — standard size and repair limit — for determining whether a component is serviceable.

For example, the manual specifies that the brush height for the pump motor should be minimum 22 mm for 1.0-1.75 ton models, and that the commutator outside diameter should be minimum 87 mm. The pressing force of the brush spring should be minimum 7.35 N. These values, when applied correctly, ensure that the motor continues to operate reliably.

Similarly, for the braking system, the manual provides the minimum lining thickness (2.0 mm), the maximum brake drum inside diameter (256 mm for 1.0-1.75 ton models), and the free length limits for return springs. These specifications allow you to determine whether the brakes need replacement before they become a safety issue.

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The Komatsu FB10EX-11 FB14EX-11 FB15EX-11 FB18EX-11 FB20EX-11 FB25EX-11 FB30-11 Electric Lift Truck Shop Manual is available as an instant PDF download. After purchase, you receive immediate access to the complete manual — no waiting for shipping, no risk of a damaged book. You can view the manual on any device, search for specific specifications, and print the pages you need for use in the workshop.

Whether you’re maintaining a single FB15EX-11 or servicing an entire fleet of Komatsu electric lift trucks, this shop manual provides the comprehensive technical information required to keep your equipment operating safely and efficiently.