🏷️ Basic Information

Make:

Komatsu

Model:

D85PX-15

Serial Number Range:

SN 1001 and up

Product Code Service Manual:

Provisional - Specific part number not provided

Product Code Operating Manual:

Provisional - Specific part number not provided

👋 Introduction

Market Segment:

Heavy-duty construction equipment, specifically crawler bulldozers.

Industry Role:

The Komatsu D85PX-15 is a versatile and robust medium-sized bulldozer, widely used in general construction, earthmoving, mining, and forestry applications due to its balance of power, maneuverability, and operating efficiency.

Primary Competitors:

Caterpillar D6T/D6XE, John Deere 700K/850K, Liebherr PR736.

D85Px 15 Key Features:

Powerful Komatsu SAA6D114E-3 engine, efficient hydrostatic steering system (if applicable to this specific variant), low ground pressure (PX model designation), durable undercarriage, user-friendly operator's station, advanced diagnostics, fuel efficiency.

📋 Manual Details

Service Manual Coverage:

Comprehensive coverage for all maintenance, repair, troubleshooting, and diagnostic procedures for the Komatsu D85PX-15 bulldozer, serial numbers 1001 and above.

Operating Manual Coverage:

Covers safe operation, controls, startup, shutdown, maintenance checks, and basic troubleshooting for the Komatsu D85PX-15 bulldozer, serial numbers 1001 and above.

Service Manual Page Count:

Estimated 1000+ pages (typical for heavy equipment service manuals)

Operating Manual Page Count:

Estimated 150-250 pages (typical for heavy equipment operating manuals)

Service Manual Type:

Service Manual

Operating Manual Type:

Operating Manual

Language:

English (assumed, standard for major manufacturer releases)

Service Manual Format:

Digital (likely PDF format for easy searching and printing)

Operating Manual Format:

Digital (likely PDF format for easy searching and printing)

📖 Manual Coverage

Service Manual Systems:

Engine (Komatsu SAA6D114E-3), Powertrain (Torque Converter, Transmission, Final Drives), Undercarriage (Rollers, Idlers, Track System), Hydraulics (Pump, Control Valves, Cylinders, Hoses), Steering System, Braking System, Electrical System (starting, charging, sensors, ECU), Operator's Cab (HVAC, controls, instrumentation), Attachments (Blade control systems, ripper system), Lubrication System, Cooling System.

Service Manual Procedures:

Scheduled Maintenance, Troubleshooting Charts, Diagnostic Codes and Procedures, Component Removal and Installation, Component Disassembly and Assembly, Overhaul Procedures, System Adjustments, Torque Specifications, Electrical Schematics, Hydraulic Schematics, Filter Replacement, Fluid Checks and Replacements.

Service Manual Depth:

In-depth diagnostic and repair procedures suitable for certified technicians. Covers detailed specifications, tolerances, and step-by-step instructions for component-level repair and overhaul.

Operating Manual Depth:

Focuses on safe and efficient operation, daily checks, lubrication points, and basic user-level troubleshooting. Not intended for complex mechanical repairs.

📊 Manual Specifications

Service Manual File Format:

PDF (Searchable text, hyperlinked table of contents, high-resolution diagrams).

Operating Manual File Format:

PDF (Searchable text, clear illustrations).

Service Manual Print Quality:

Designed for clarity and durability when printed. Diagrams and schematics are high-resolution for accurate interpretation.

Operating Manual Print Quality:

Clear and concise with easy-to-understand illustrations for operator reference.

Service Manual Binding Type:

N/A (Digital Format)

Operating Manual Binding Type:

N/A (Digital Format)

Service Manual Paper Type:

N/A (Digital Format)

Operating Manual Paper Type:

N/A (Digital Format)

⚙️ Engine Specifications

Engine Make Model:

Komatsu SAA6D114E-3

Engine Type:

Turbocharged, Aftercooled, Direct Injection Diesel

Engine Displacement:

11.04 liters (673.8 cubic inches)

Emissions Compliance:

Tier III / EU Stage IIIA equivalent (typical for this model's era)

Gross Horsepower:

Approx. 234 HP (174 kW) @ 2000 RPM (net may vary slightly)

Peak Torque:

Approx. 745 lb-ft (1010 Nm) @ 1400 RPM (approximate)

Fuel Type:

Diesel

Fuel Filter Part Number:

Refer to Service Manual for specific Komatsu part numbers (e.g., 600-311-3600 often used for primary fuel filter).

Fuel System Type:

Common Rail Direct Injection (likely)

🔧 Transmission

Transmission Type:

Hydrostatic Transmission (HST)

Transmission Control:

Electronic control with variable speed settings.

Transmission Features:

Provides infinite speed control, excellent maneuverability, and smooth power delivery. Allows for independent control of track speeds for advanced steering capabilities (pivot turns).

Transmission Fluid Specification:

Komatsu genuine Super mixed fluid UTF (Universal Transmission Fluid) or equivalent API GL-4.

Transmission Fluid Capacity:

Refer to Service Manual (typically around 30-40 liters / 8-10.5 gallons).

📐 Dimensions

Operating Weight:

Approximately 18,000 - 20,000 kg (39,683 - 44,092 lbs) depending on configuration (e.g., blade type, ROPS/FOPS).

Length With Blade:

Approx. 4.5 - 5.0 meters (14.7 - 16.4 ft)

Width Overall:

Approx. 2.5 - 3.0 meters (8.2 - 9.8 ft) - depends on track shoe width.

Height To Exhaust:

Approx. 2.8 - 3.0 meters (9.2 - 9.8 ft)

Ground Clearance:

Approx. 400-450 mm (15.7-17.7 inches)

Track Gauge:

Approx. 1.8 - 2.0 meters (5.9 - 6.6 ft)

Track Shoe Width:

Typically 510 mm (20 inches) for standard, potentially wider for PX (Low Ground Pressure) models.

🛡️ Safety Features

Operator Protection:

ROPS (Roll-Over Protective Structure) and FOPS (Falling Object Protective Structure) are standard or optional features, providing operator safety in challenging environments.

Active Safety Features:

Hydrostatic steering for precise control, parking brake with visual indicator, backup alarm, operator presence system.

Passive Safety Features:

ROPS/FOPS cab, safety glass, seatbelt, emergency stop button.

💡 Technology Features

Operator Interface:

Digital display for monitoring machine status, diagnostics, and operational parameters. Simple, robust controls designed for heavy-duty use.

Diagnostic Technology:

Komatsu's advanced diagnostic system provides detailed error codes and troubleshooting trees, accessible via the in-cab monitor or external diagnostic tools. The service manual is essential for interpreting these codes.

Telematics Integration:

Later models may incorporate Komtrax telematics for remote monitoring of machine health, location, and operational data, though this specific variant's capability needs verification.

🔧 Maintenance

Engine Oil Change Interval:

Typically every 250-500 operating hours, depending on oil analysis and operating conditions. Refer to Service Manual for exact interval.

Hydraulic Oil Filter Replacement:

Typically every 1000 operating hours or as indicated by hydraulic system pressure monitoring.

Air Filter Replacement:

Replace when air cleaner restriction indicator illuminates or every 250 hours, whichever comes first.

Engine Oil Specification:

Komatsu Genuine Engine Oil CES 20081 (e.g., SAE 15W-40 or 10W-30 depending on ambient temperature). Refer to Service Manual for precise API/ACEA classifications.

Engine Coolant Specification:

Komatsu Super Long Life Coolant (SLLC) or equivalent with proper concentration. Typically a 50/50 mix of coolant and deionized water.

Hydraulic Oil Specification:

Komatsu genuine Super mixed fluid UTF (Universal Transmission Fluid) or equivalent ISO VG 32/46 hydraulic oil.

Common Wear Items:

Track components (links, pins, bushings, rollers, idlers), undercarriage components, hydraulic hoses and seals, engine filters, and wear plates on the blade and ripper.

Potential Electrical Issues:

Sensor failures, harness damage from vibration or impact, issues with electronic control units (ECU) if not properly maintained or subjected to electrical surges. Service Manual provides diagnostic procedures.

Greasing Points:

Regular lubrication of pivot points, track rollers, idlers, and blade/ripper linkages is crucial. Refer to the Operating Manual for a detailed lubrication chart and schedule.

📚 Vehicle History

Komatsu Heritage:

Komatsu is a globally recognized leader in construction and mining equipment, known for its innovation, durability, and reliability. The company has a long history of developing powerful and efficient machinery since its founding in 1921.

D85 Series Evolution:

The D85 series is a long-standing line of Komatsu bulldozers, consistently updated with new technologies and engine advancements to meet evolving performance and emissions standards. The PX designation typically indicates a Low Ground Pressure variant optimized for softer terrain.

Production Period:

The D85PX-15 model was primarily produced in the mid-to-late 2000s and early 2010s, a period marked by stricter emissions regulations and advancements in electronic control systems.

🏆 Awards & Recognition

Industry Awards:

Komatsu equipment is consistently recognized for its durability, performance, and innovation within the construction industry. Specific awards for the D85PX-15 model itself are not widely publicized in general, but the series is a respected workhorse.