🏷️ Basic Information

Make:

Komatsu

Model:

D50A-16, D50P-16, D50PL-16

Machine Type:

Crawler Dozer

Generation Designation:

-16 Series

Product Code:

D50A-16 D50P-16 D50PL-16 Workshop Service Manual PDF Download

👋 Introduction

Segment:

Medium-duty crawler dozer for construction and earthmoving applications.

Target Users:

Construction companies, earthmoving contractors, agricultural operations, municipal public works departments, heavy equipment maintenance facilities.

Competitors:

Caterpillar D5 series, John Deere 550/650 series, Case IH CX series dozers, Dressta TD-series dozers.

Dozer Type:

Crawler dozer with hydrostatic transmission (HST) for precise maneuverability and variable speed control.

Operator Comfort:

Designed for efficient operation, often featuring ergonomic controls and good visibility (specific features depend on cab configuration).

📋 Manual Details

Models Covered:

Komatsu D50A-16, Komatsu D50P-16, Komatsu D50PL-16

Serial Numbers Covered:

D50A-16: 65001 and up; D50P-16: 65001 and up; D50PL-16: Serial numbers not fully specified but implied to be within the -16 series

Estimated Page Count:

Comprehensive (Specific count not provided in product info, typical for workshop manuals of this nature exceeds 500 pages)

Type:

Workshop Service Repair Manual

Language:

English (Assumed, standard for this type of documentation)

Format:

PDF Download

📖 Manual Coverage

Engine Systems:

Engine overhaul, diagnosis, fuel system, cooling system, lubrication system, air intake and exhaust systems, starting system.

Powertrain Systems:

Hydrostatic transmission (HST), torque converter, transmission control system, final drives, track drive system, bevel gear.

Hydraulic Systems:

Hydraulic pump, control valves, cylinders (lift, tilt), hydraulic motor, hydraulic filters, hydraulic system diagnosis and repair.

Undercarriage Systems:

Track frames, rollers (track, carrier), idlers, sprockets, track links, tensioning system, lubrication.

Electrical Systems:

Starting and charging system, wiring diagrams, sensor diagnostics, control units (ECU), troubleshooting electrical faults.

Operator Station And Controls:

Control levers, pedals, steering system, blade control mechanisms, ROPS (Roll-Over Protective Structure) and FOPS (Falling Object Protective Structure) if applicable.

Braking Systems:

Service brake system, parking brake system, troubleshooting brake performance.

Frame And Chassis:

Main frame inspection and repair, structural integrity checks.

Maintenance Procedures:

Scheduled maintenance, lubrication points and schedules, filter replacement, fluid checks and changes, general inspection guidelines.

Troubleshooting Guides:

Systematic diagnostic procedures for common and uncommon issues, fault code interpretation (if applicable), symptom-based troubleshooting.

Repair And Overhaul:

Detailed step-by-step instructions for component removal, disassembly, inspection, repair, reassembly, and installation.

Diagnostic Procedures:

Component testing, system pressure checks, electrical continuity tests, diagnostic tool usage (if applicable).

Specifications And Data:

Torque values, clearances, fluid capacities, material specifications, pressure settings, electrical resistance values.

Adjustment Procedures:

Hydraulic control adjustments, brake adjustments, track tension adjustments, linkage alignments.

Safety Precautions:

Specific safety warnings and procedures related to maintenance and repair tasks.

Depth Level:

Comprehensive workshop-level detail covering from routine maintenance to major component overhaul and rebuild.

Diagnostic Capabilities:

Advanced diagnostics including troubleshooting guides, electrical schematics, and component testing procedures.

Rebuild Information:

Detailed instructions for the complete disassembly, inspection, repair, and reassembly of major components like engines, transmissions, and hydraulic systems.

📊 Manual Specifications

File Type:

PDF

Searchable:

Yes (Typically, if generated from OCR or native digital source)

Printability:

Printable (Standard for PDF workshop manuals)

Image Resolution:

High resolution (Expected for technical diagrams and illustrations)

Binding:

N/A (Digital Format)

Paper Quality:

N/A (Digital Format)

⚙️ Engine Specifications

Engine Model:

Likely Komatsu S6D107E-1 (or similar variant, common for this size class and era). Specific engine model not explicitly stated in product info but is a key piece of information a service manual would detail.

Engine Type:

Diesel, 4-stroke, water-cooled

Displacement:

Approximately 6.67 Liters (based on common engine families for this size dozer)

Gross Horsepower:

Estimated range: 110-130 HP (Varies slightly by specific model variant and configuration). Exact figures would be in the manual.

Net Horsepower:

Estimated range: 100-120 HP (Varies slightly by specific model variant and configuration). Exact figures would be in the manual.

Fuel Type:

Diesel Fuel

Injection System:

Direct injection, likely with electronically controlled injection pump or common rail system depending on exact model year/emissions standards.

Fuel Filter Part Number:

Specific part numbers would be listed in the manual (e.g., Komatsu 600-311-1520 for fuel filter element).

🔧 Transmission

Transmission Type:

Hydrostatic Transmission (HST)

Transmission Control:

Electronically controlled, providing variable speed and power management.

Optional Features:

N/A (HST is a defining feature of these models)

Drive System:

Dual-path hydrostatic drive for steering and propulsion.

Transmission Fluid Spec:

Komatsu genuine hydraulic fluid, or equivalent DEXRON III/MERCON specification fluid. Manual will specify exact Komatsu part number.

Transmission Fluid Capacity:

Capacity varies by specific configuration, but generally in the range of 15-20 liters. Manual provides exact figure.

📐 Dimensions

Operating Weight:

Approximately 10,000 - 12,000 kg (depending on configuration, blade type, and ROPS/FOPS cab).

Length W Blade:

Approximately 4-5 meters (typical for this class).

Width W Blade:

Approximately 2.5-3 meters (depending on blade width).

Height To Top Of Cab:

Approximately 2.5-3 meters (depending on configuration).

Ground Clearance:

Approximate: 0.35 - 0.4 meters.

Ground Pressure:

Varies by track gauge and configuration, typically 0.05 MPa to 0.07 MPa.

Track Gauge:

Standard: 1.8 meters (Typical for D50 series)

Number Of Bottom Rollers:

Typically 6 per side

Number Of Top Rollers:

Typically 1 or 2 per side

🛡️ Safety Features

Rollover Protection:

ROPS (Roll-Over Protective Structure) is standard or optional depending on region and configuration. Manual will detail compliance and inspection.

Falling Object Protection:

FOPS (Falling Object Protective Structure) may be available or standard. Manual will detail compliance.

Brake Interlock:

Likely equipped with parking brake interlocks for safety during operation and maintenance.

Warning Systems:

Engine diagnostic lights, hydraulic system warning lights, backup alarms (if applicable).

Seatbelt:

Standard seatbelt in operator station.

Operator Station Design:

Ergonomically designed controls and clear visibility to enhance operator safety and reduce fatigue.

💡 Technology Features

Infotainment System:

N/A - This is a heavy construction dozer, not equipped with typical automotive infotainment systems.

Driver Assistance Features:

N/A - Focus is on operational efficiency and control, not driver assistance in the automotive sense. Features would be mechanical and hydraulic controls for blade and travel.

Connectivity Features:

N/A - No standard automotive connectivity features. Later models might have telematics or diagnostic ports.

🔧 Maintenance

Engine Oil Change:

Typically every 250-500 operating hours. Manual provides precise intervals and oil type.

Hydraulic Oil Change:

Typically every 1000-2000 operating hours. Manual provides precise intervals and fluid type.

Track Adjustment:

As needed, or every 250 operating hours. Manual details procedure and specifications.

Filter Replacement Intervals:

Fuel, oil, and hydraulic filters typically replaced with respective fluid changes, or per manufacturer recommendation (e.g., every 500 hours).

Engine Oil Type:

API CF or higher, SAE 15W-40 (or as specified by Komatsu for specific climate conditions). Manual will list Komatsu genuine oil part numbers.

Coolant Specifications:

Permanent type antifreeze coolant, 50% mixture with deionized water. Manual specifies Komatsu coolant and concentration.

Hydraulic Oil Specifications:

Komatsu Genuine Hydraulic Oil, or equivalent ISO VG 32 or VG 46, or DEXRON III/MERCON. Manual will confirm exact Komatsu part number.

Grease Type:

Lithium complex EP grease NLGI No. 2. Manual provides specific Komatsu grease part number for various points.

Common Wear Items:

Track components (links, rollers, idlers, sprockets), blade edges and tips, undercarriage bushings, hydraulic system seals and hoses.

Hst Maintenance:

Hydrostatic transmission requires regular fluid and filter changes, and proper system bleeding. Manual details any specific HST maintenance considerations.

Engine Reliability:

Komatsu engines are generally robust, but like all diesel engines, require adherence to maintenance schedules. Issues can arise from fuel contamination or cooling system failures if neglected.

Hydraulic System Performance:

Loss of hydraulic power or slow operation can indicate pump wear, control valve issues, or low fluid levels/filtration problems. Manual is crucial for diagnosis.

📚 Vehicle History

Manufacturer History:

Komatsu Ltd. is a Japanese multinational corporation that manufactures construction, mining, forestry, and industrial equipment. Founded in 1921, it is one of the world's largest producers of such equipment.

Series Development:

The D50 series represents a lineage of mid-sized crawler dozers from Komatsu, evolved through various iterations ('A', 'P', 'PL' often denote configurations like standard, power-shift or specific blade types). The -16 denotes a specific generation or series update.

Production Period:

The -16 series typically falls within the late 1980s to early 2000s production timeframe, though specific model years would need confirmation from the manual.

Manufacturing Location:

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

🏆 Awards & Recognition

Industry Awards:

Komatsu equipment generally receives recognition for durability, reliability, and efficiency in the heavy machinery sector. Specific awards for the D50A-16/D50P-16 series are not readily publicized in this format but are implied by market presence.

Performance Ratings:

Operational performance is typically evaluated based on drawbar pull, blade capacity, fuel efficiency, and track stability in various terrain conditions. The manual provides specifications to understand these performance metrics.

Emission Standards:

Compliance with relevant emission standards of the period for diesel engines. Manual may reference specific standards met.