Komatsu HM350-2 ARTICULATED DUMP Truck Service Repair Manual + Field Assembly INSTRUCTION + Operation & Maintenance Manual

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🏷️ Basic Information Identification Make: Komatsu Model: HM350-2 Vehicle Type: Articulated Dump Truck Product Type: Service Repair Manual + Field Assembly Instruction + Operation & Maintenance Manual Codes Model Code: HM350-2 👋 Introduction Market Position Segment: Heavy construction equipment, specifically articulated dump trucks designed for mining, quarrying, and heavy civil works. Competitive Analysis Key Competitors: Caterpillar (730C, 740B), Volvo (A30D, A35E), John Deere (260E, 370E), Bell Equipment (B30D, B35D). Key Features Articulation Pivot: Robust design for excellent maneuverability in challenging terrain and confined spaces. Payload Capacity: Designed for significant hauling capacity, contributing to high productivity. Durability Reliability: Komatsu's reputation for building durable and reliable heavy machinery, engineered for tough operating conditions. Operator Comfort: Focus on operator comfort and safety through ergonomically designed cabins and advanced control systems. 📋 Manual Details Coverage Areas Primary Coverage: Komatsu HM350-2 Articulated Dump Truck Included Sections: Service Repair, Field Assembly, Operation & Maintenance Page Count Estimated Total Pages: Likely exceeding 1000 pages across all three volumes (exact count not provided) Manual Type Service Repair Manual: Comprehensive diagnostic, repair, and overhaul procedures. Field Assembly Instruction: Step-by-step guide for initial setup and component assembly. Operation Maintenance Manual: Operator controls, daily checks, lubrication, and routine maintenance. Language Primary Language: English (Standard for most Komatsu manuals) Format Likely Format: Digital (PDF) - typical for modern service manuals Digital Features: Searchable text, hyperlinked table of contents, printable pages. 📖 Manual Coverage Systems Covered Engine Systems: Disassembly, assembly, inspection, repair, troubleshooting of engine components (e.g., SAA6D125E-5). Powertrain Systems: Transmission, torque converter, drive shafts, differentials, final drives. Hydraulics Systems: Steering, hoisting, braking hydraulics; pumps, cylinders, control valves, hoses, filters. Electrical Systems: Wiring diagrams, starter, alternator, batteries, lighting, sensors, ECM, control units. Braking Systems: Service brake, parking brake, retarder system (if applicable), brake adjustment and repair. Steering Systems: Articulated steering mechanism, hydraulic steering control. Chassis Suspension: Frame articulation, suspension components, mounting hardware. Body Cabin: Operator cabin structure, seating, controls, body panel removal/installation. Cooling Systems: Radiator, fan, coolant circuits, thermostat. Fuel Systems: Fuel tank, lines, filters, injection system (diesel). Exhaust Systems: Exhaust manifold, piping, mufflers. Procedures Included Maintenance Procedures: Regular inspections, lubrication points, filter changes, fluid level checks, greasing intervals. Repair Procedures: Component disassembly, cleaning, inspection, measurement, repair, reassembly, and adjustment. Troubleshooting: Diagnostic flowcharts, common fault codes, symptom-based troubleshooting guides. Assembly Procedures: Detailed steps for field assembly of major components and subsystems. Disassembly Procedures: Step-by-step guides for removing and disassembling components for repair. Overhaul Procedures: Complete rebuild procedures for major powertrain and hydraulic components. Installation Procedures: Correct installation methods for new or rebuilt components. Technical Depth Depth Level: Highly detailed, expert-level technical information suitable for certified mechanics and technicians. Diagnostic Tools: Information on required specialized tools, diagnostic equipment, and measurement instruments. Specifications Tolerances: Precise measurements, wear limits, torque specifications, and tightening sequences. Part Identification: Identification of all components, including part numbers (though a separate parts manual is ideal). 📊 Manual Specifications File Format Digital Format: PDF (Portable Document Format) Print Quality Digital Resolution: High-resolution graphics and text, optimized for printing. Binding Type If Printed: Typically coil-bound or perfect-bound for durability in workshop environments. Paper Type If Printed: Heavy-duty, glossy paper stock to withstand grease and repeated handling. Searchability Text Search: Fully searchable text for quick information retrieval. ⚙️ Engine Specifications Primary Engine Engine Model: Komatsu SAA6D125E-5 (Tier III compliant) Engine Type: 6-cylinder, water-cooled, 4-stroke, direct injection, turbocharged and aftercooled diesel engine. Displacement: 11.04 liters (673.5 cubic inches) Performance Gross Horsepower: Approximately 330 HP (246 kW) at 2000 RPM (may vary slightly by region/configuration) Net Horsepower: Approximately 305 HP (227 kW) at 2000 RPM Peak Torque: Around 1050 lb-ft (1425 Nm) at 1400 RPM Fuel System Fuel Type: Diesel Fuel Injection System: High-pressure common rail (HPCR) or Electronic Unit Injectors (EUI) depending on specific build. Emission Control Emission Standard: Tier III / Stage IIIA 🔧 Transmission Standard Transmission Type: Komatsu Traction Plus Automatic Transmission (K-AT) Gear Count: 8-speed forward, 4-speed reverse (typical for this model range) Optional Optional Features: Limited-slip differentials (standard on drive axles), manual override capabilities. Features Shift Control: Electronically controlled automatic shifting for optimal performance and fuel efficiency. Transmission Fluid: Komatsu genuine transmission oil (e.g., TO30 specification) or equivalent. Transmission Fluid Capacity: Approximately 30-40 liters (refer to manual for exact capacity). 📐 Dimensions Exterior Overall Length: Approximately 9.9 - 10.3 meters (32.5 - 33.8 ft) Overall Width: Approximately 3.1 - 3.2 meters (10.2 - 10.5 ft) Overall Height: Approximately 3.4 - 3.5 meters (11.2 - 11.5 ft) to top of cab Cargo Body Capacity Heaped: Approximately 19.0 - 21.0 m³ (24.9 - 27.5 yd³) Payload Capacity: Approximately 35,000 kg (77,162 lbs) Weights Operating Weight: Approximately 25,000 - 27,000 kg (55,116 - 59,525 lbs) Gross Vehicle Weight: Approximately 60,000 - 62,000 kg (132,277 - 136,686 lbs) Wheels Tires Standard Tire Size: 23.5R25 (various tread patterns available) Wheelbase: Approximately 4.5 - 4.6 meters (14.8...

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Type: Articulated Dump Truck

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Description

🏷️ Basic Information

Identification

Make:

Komatsu

Model:

HM350-2

Vehicle Type:

Articulated Dump Truck

Product Type:

Service Repair Manual + Field Assembly Instruction + Operation & Maintenance Manual

Codes

Model Code:

HM350-2

👋 Introduction

Market Position

Segment:

Heavy construction equipment, specifically articulated dump trucks designed for mining, quarrying, and heavy civil works.

Competitive Analysis

Key Competitors:

Caterpillar (730C, 740B), Volvo (A30D, A35E), John Deere (260E, 370E), Bell Equipment (B30D, B35D).

Key Features

Articulation Pivot:

Robust design for excellent maneuverability in challenging terrain and confined spaces.

Payload Capacity:

Designed for significant hauling capacity, contributing to high productivity.

Durability Reliability:

Komatsu's reputation for building durable and reliable heavy machinery, engineered for tough operating conditions.

Operator Comfort:

Focus on operator comfort and safety through ergonomically designed cabins and advanced control systems.

📋 Manual Details

Coverage Areas

Primary Coverage:

Komatsu HM350-2 Articulated Dump Truck

Included Sections:

Service Repair, Field Assembly, Operation & Maintenance

Page Count

Estimated Total Pages:

Likely exceeding 1000 pages across all three volumes (exact count not provided)

Manual Type

Service Repair Manual:

Comprehensive diagnostic, repair, and overhaul procedures.

Field Assembly Instruction:

Step-by-step guide for initial setup and component assembly.

Operation Maintenance Manual:

Operator controls, daily checks, lubrication, and routine maintenance.

Language

Primary Language:

English (Standard for most Komatsu manuals)

Format

Likely Format:

Digital (PDF) - typical for modern service manuals

Digital Features:

Searchable text, hyperlinked table of contents, printable pages.

📖 Manual Coverage

Systems Covered

Engine Systems:

Disassembly, assembly, inspection, repair, troubleshooting of engine components (e.g., SAA6D125E-5).

Powertrain Systems:

Transmission, torque converter, drive shafts, differentials, final drives.

Hydraulics Systems:

Steering, hoisting, braking hydraulics; pumps, cylinders, control valves, hoses, filters.

Electrical Systems:

Wiring diagrams, starter, alternator, batteries, lighting, sensors, ECM, control units.

Braking Systems:

Service brake, parking brake, retarder system (if applicable), brake adjustment and repair.

Steering Systems:

Articulated steering mechanism, hydraulic steering control.

Chassis Suspension:

Frame articulation, suspension components, mounting hardware.

Body Cabin:

Operator cabin structure, seating, controls, body panel removal/installation.

Cooling Systems:

Radiator, fan, coolant circuits, thermostat.

Fuel Systems:

Fuel tank, lines, filters, injection system (diesel).

Exhaust Systems:

Exhaust manifold, piping, mufflers.

Procedures Included

Maintenance Procedures:

Regular inspections, lubrication points, filter changes, fluid level checks, greasing intervals.

Repair Procedures:

Component disassembly, cleaning, inspection, measurement, repair, reassembly, and adjustment.

Troubleshooting:

Diagnostic flowcharts, common fault codes, symptom-based troubleshooting guides.

Assembly Procedures:

Detailed steps for field assembly of major components and subsystems.

Disassembly Procedures:

Step-by-step guides for removing and disassembling components for repair.

Overhaul Procedures:

Complete rebuild procedures for major powertrain and hydraulic components.

Installation Procedures:

Correct installation methods for new or rebuilt components.

Technical Depth

Depth Level:

Highly detailed, expert-level technical information suitable for certified mechanics and technicians.

Diagnostic Tools:

Information on required specialized tools, diagnostic equipment, and measurement instruments.

Specifications Tolerances:

Precise measurements, wear limits, torque specifications, and tightening sequences.

Part Identification:

Identification of all components, including part numbers (though a separate parts manual is ideal).

📊 Manual Specifications

File Format

Digital Format:

PDF (Portable Document Format)

Print Quality

Digital Resolution:

High-resolution graphics and text, optimized for printing.

Binding Type

If Printed:

Typically coil-bound or perfect-bound for durability in workshop environments.

Paper Type

If Printed:

Heavy-duty, glossy paper stock to withstand grease and repeated handling.

Searchability

Text Search:

Fully searchable text for quick information retrieval.

⚙️ Engine Specifications

Primary Engine

Engine Model:

Komatsu SAA6D125E-5 (Tier III compliant)

Engine Type:

6-cylinder, water-cooled, 4-stroke, direct injection, turbocharged and aftercooled diesel engine.

Displacement:

11.04 liters (673.5 cubic inches)

Performance

Gross Horsepower:

Approximately 330 HP (246 kW) at 2000 RPM (may vary slightly by region/configuration)

Net Horsepower:

Approximately 305 HP (227 kW) at 2000 RPM

Peak Torque:

Around 1050 lb-ft (1425 Nm) at 1400 RPM

Fuel System

Fuel Type:

Diesel Fuel

Injection System:

High-pressure common rail (HPCR) or Electronic Unit Injectors (EUI) depending on specific build.

Emission Control

Emission Standard:

Tier III / Stage IIIA

🔧 Transmission

Standard

Transmission Type:

Komatsu Traction Plus Automatic Transmission (K-AT)

Gear Count:

8-speed forward, 4-speed reverse (typical for this model range)

Optional

Optional Features:

Limited-slip differentials (standard on drive axles), manual override capabilities.

Features

Shift Control:

Electronically controlled automatic shifting for optimal performance and fuel efficiency.

Transmission Fluid:

Komatsu genuine transmission oil (e.g., TO30 specification) or equivalent.

Transmission Fluid Capacity:

Approximately 30-40 liters (refer to manual for exact capacity).

📐 Dimensions

Exterior

Overall Length:

Approximately 9.9 - 10.3 meters (32.5 - 33.8 ft)

Overall Width:

Approximately 3.1 - 3.2 meters (10.2 - 10.5 ft)

Overall Height:

Approximately 3.4 - 3.5 meters (11.2 - 11.5 ft) to top of cab

Cargo

Body Capacity Heaped:

Approximately 19.0 - 21.0 m³ (24.9 - 27.5 yd³)

Payload Capacity:

Approximately 35,000 kg (77,162 lbs)

Weights

Operating Weight:

Approximately 25,000 - 27,000 kg (55,116 - 59,525 lbs)

Gross Vehicle Weight:

Approximately 60,000 - 62,000 kg (132,277 - 136,686 lbs)

Wheels Tires

Standard Tire Size:

23.5R25 (various tread patterns available)

Wheelbase:

Approximately 4.5 - 4.6 meters (14.8 - 15.1 ft)

🛡️ Safety Features

Ratings

Safety Standards:

Complies with relevant heavy machinery safety standards (e.g., ROPS/FOPS cab).

Active Features

Braking System:

Full hydraulic, wet multiple-disc brakes on all wheels, with dual-circuit system for enhanced safety.

Parking Brake:

Spring applied, hydraulically released wet multi-disc brake on transmission output shaft.

Retarder:

Integrated engine retarder or transmission retarder for auxiliary braking on inclines.

Passive Features

Operator Cab:

Reinforced Safety (ROPS - Roll-Over Protective Structure) and Falling Object Protection (FOPS) certified cabin.

Visibility:

Large windows, optimized cabin design for excellent all-around visibility. Optional backup camera.

Seatbelt:

Standard operator seatbelt for safety during operation.

💡 Technology Features

Infotainment

Operator Interface:

Basic but functional operator interface with essential controls, warning lights, and monitoring systems. May include a simple diagnostic display.

Driver Assistance

Auto Shift Control:

The K-AT transmission offers advanced automatic shift logic for optimized performance and fuel economy.

Traction Control:

Limited-slip differentials (standard on drive axles) enhance traction in slippery conditions.

Connectivity

Telematics Provision:

While not explicitly stated for the HM350-2, many Komatsu machines of this era were provisioned for telematics systems (like Komtrax) for remote monitoring and diagnostics, though it may have been an option.

🔧 Maintenance

Service Intervals

Daily Checks:

Engine oil level, coolant level, hydraulic oil level, tire condition, brake system check, fluid leaks, general inspection.

Lubrication Intervals:

Greasing of articulation points, suspension linkages, hoist cylinders, steering cylinders every 250 operating hours.

Engine Oil Filter Change:

Every 500 operating hours (or as per Komatsu oil analysis recommendations).

Fuel Filter Change:

Every 500 operating hours, or when fuel system issues are detected.

Hydraulic Filter Change:

Every 1000 operating hours, or based on oil analysis. Inspect suction strainers at 250 hours.

Transmission Oil Change:

Every 1000 operating hours or 12 months. Inspect magnetic plugs regularly.

Fluid Specifications

Engine Oil:

Komatsu NEO-7 (API CI-4 or CH-4, SAE 15W-40) or equivalent approved oil.

Coolant:

Komatsu Super Long Life Coolant (SLLC) or equivalent. Mixture ratio 50% SLLC and 50% deionized water.

Hydraulic Oil:

Komatsu genuine hydraulic oil (e.g., HD32V) or equivalent ISO VG 32 hydraulic fluid.

Transmission Oil:

Komatsu genuine transmission oil TO30 or equivalent.

Known Issues

Articulation Pin Wear:

Potential wear on articulation pins and bushings due to heavy load and constant articulation, requiring regular greasing and inspection.

Hydraulic System Leaks:

Common in heavy machinery, particularly with age. Requires diligent inspection of hoses, seals, and fittings.

ECM And Sensor Failures:

As with most electronically controlled machinery, ECM and sensor failures can occur, impacting engine and transmission performance.

Brake System Wear:

Wet brake systems require periodic fluid changes and filter cleaning/replacement. Pad and disc wear can occur under heavy usage.

📚 Vehicle History

Brand Heritage

Manufacturer:

Komatsu Ltd. is a Japanese multinational corporation that manufactures construction, mining, and industrial equipment.

Model Evolution

Articulated Dump Truck Line:

The HM350-2 is part of Komatsu's long-standing line of articulated dump trucks, evolving through various iterations to improve performance, efficiency, and operator ergonomics.

Production

Production Period:

The HM350-2 likely saw production in the mid-to-late 2000s, succeeding earlier models and preceding newer electronically advanced versions.

Manufacturing Location:

Komatsu heavy equipment is manufactured globally, with significant production facilities in Japan and North America.

🏆 Awards & Recognition

Recognitions

Industry Awards:

Komatsu equipment generally receives recognition for durability, reliability, and operational efficiency in the heavy equipment sector, though specific awards for the HM350-2 model are not readily documented publicly.