🏷️ Basic Information Identification Make: Komatsu Model: D51EX-22 / D51PX-22 Product Type: Service Repair Manual + Operation & Maintenance Manual Codes Model Codes: D51EX-22, D51PX-22 👋 Introduction Market Position Class: Medium Crawler Tractor Application: Construction, earthmoving, agriculture, forestry, site preparation. Competitive Analysis Competitors: Caterpillar D5, John Deere 650K, Case IH MXM Series (comparable models), New Holland C Series. Key Features Variant Difference: D51EX-22 is a standard track version, D51PX-22 features a PCL (Parallel Crawler Link) system for enhanced maneuverability and reduced ground pressure, often with wider tracks. Operator Comfort: Designed for operator comfort and efficiency with ergonomic controls and a quiet operating environment. Technology Integration: Features advanced electronic controls for powertrain and hydraulics for optimal performance and fuel efficiency. 📋 Manual Details Coverage Areas Manual Scope: Comprehensive coverage for both Service Repair and Operation & Maintenance of Komatsu D51EX-22 and D51PX-22 crawler tractors. Page Count Service Repair Manual Page Count: Estimated 700-900 pages (typical for this class of equipment) Operation Maintenance Manual Page Count: Estimated 150-250 pages (typical for this class of equipment) Manual Type Service Repair Manual Type: Service Repair Manual Operation Maintenance Manual Type: Operation & Maintenance Manual Language Language: English Format Format: Digital (PDF) 📖 Manual Coverage Systems Covered Powertrain: Engine, fuel system, cooling system, exhaust system, transmission, drive shafts, final drives, bevel gear. Undercarriage: Track frames, track rollers, carrier rollers, idlers, recoil springs, track shoes. Hydraulic System: Hydraulic pump, control valves, cylinders, hydraulic motor (for PX variant), hydraulic lines, filters, accumulators. Electrical System: Starter motor, alternator, battery, wiring harnesses, sensors, ECUs, control panels, lighting, indicators. Operator Station: Cab, ROPS/FOPS structure, seats, controls, instruments, HVAC system (if equipped). Blade Control: Hydraulic blade control systems (tilt, pitch, angle), control linkages. Procedures Included Maintenance: Scheduled maintenance, fluid checks and changes, filter replacements, lubrication points and schedules, cleaning procedures. Troubleshooting: Diagnostic procedures for common issues, error code interpretation, systematic fault finding for all major systems. Repair: Detailed step-by-step disassembly, overhaul, and reassembly procedures for all major components and systems. Diagnostics: Electrical system diagnostics, hydraulic system pressure testing, engine performance checks. Adjustment: Valve adjustments, brake band adjustments, hydraulic control lever adjustments. Technical Depth Depth: Comprehensive, covering from basic operator checks to complete engine and transmission rebuilds, including electrical schematics and hydraulic circuit diagrams. 📊 Manual Specifications File Format PDF Searchability: Searchable text and bookmarked chapters for easy navigation. Print Quality Image Resolution: High-resolution images, diagrams, and schematics suitable for clear printing. Binding Type Binding Type Physical: N/A (Digital format) Paper Type Paper Type Physical: N/A (Digital format) ⚙️ Engine Specifications Primary Engine Engine Model: Komatsu SAA6D107E-1 (likely) Engine Type: Turbocharged, Intercooled, Diesel Displacement: 6.67 Liters (407 cu. in.) Performance Net Horsepower: Approximately 160-170 HP (varies by emission standards and specific configuration) Peak Torque: Refer to specific model year and engine variant within the manual. Fuel System Injection System: Common Rail Electronic Fuel Injection (HPCR) Emission Controls: Tier 3 / Tier 4 Interim or equivalent, depending on market and model year (manual will detail specific requirements). 🔧 Transmission Standard Transmission Type: Hydrostatic Transmission (HST) Drive Configuration: All-wheel drive (with independent control of each track via HST) Features Variable Speed: Provides infinite variable speed control, allowing precise speed matching to application. Power Management: Electronically controlled for optimal power and fuel efficiency. Fluid Specifications Transmission Fluid Type: Komatsu Genuine Hydraulic Oil (or equivalent per manual specification, e.g., ISO VG 46) Transmission Fluid Capacity: Refer to manual for specific capacity (typically around 30-40 Liters for HST system). 📐 Dimensions Exterior Operating Weight: Approximately 16,000 - 18,000 kg (35,000 - 40,000 lbs), depending on configuration (EX vs PX, blade type, cab). Length W Blade: Refer to manual for precise dimensions. Width W Blade: Refer to manual for precise dimensions. Height W Cab: Refer to manual for precise dimensions. Weights Ground Pressure Px: Lower than standard EX due to wider tracks and PCL system on PX variant. 🛡️ Safety Features Ratings Roll Over Protection: ROPS (Roll-Over Protective Structure) certified, FOPS (Falling-Object Protective Structure) often available or standard. Active Features Parking Brake: Automatic spring-applied, hydraulic-released parking brake. Operator Presence System: Ensures machine operates only when operator is seated and has engaged safety lever. Passive Features Seatbelt: Standard safety belt. Warning Lights Alarms: Standard hazard lights, backup alarms, and indicator lamps. 💡 Technology Features Infotainment Operator Interface: Digital display for machine monitoring, diagnostics, and performance settings. Driver Assistance Variable Hydrostatic Drive: Allows precise control for fine grading and efficient operation. Connectivity Telematics Preparation: May include provisions for Komatsu's KOMTRAX™ telematics system for remote monitoring of machine health and location (manual will detail). 🔧 Maintenance Service Intervals Oil Change Engine: Every 500 hours or annually (refer to manual for exact hours and conditions). Hydraulic Filter Replacement: Every 1000 hours or as indicated by monitoring system. Air Filter Replacement: As needed, indicated by restriction indicator, or every 1000 hours. Fluid Specifications...