🏷️ Basic Information Identification Make: Komatsu Model: D31EX-21, D31PX-21, D37EX-21, D37PX-21 Product Category: Dozer Manufacturer: Komatsu Ltd. 📋 Manual Details Documentation Manual Type: Service Shop Manual Format: PDF Content Description: Detailed information, electrical and hydraulic diagrams, actual real photo illustrations and schemes, step by step operations. Language: English 🔧 Transmission Drivetrain Drive System: Hydrostatic Transmission (HST) Type: Hydrostatic Transmission 📐 Dimensions Physical Weight: Varies by specific model (EX/PX, different configurations) 🔧 Maintenance Servicing Recommended Oil Type: Refer to manual for specific engine and hydraulic oil types 📄 Specifications General Device Type: Crawler Dozer Intended Use: Construction, Earthmoving, Grading Power Source: Internal Combustion Engine 📄 Performance Specs Engine Engine Type: Diesel Fuel Type: Diesel Horsepower: Refer to manual for specific engine horsepower ratings Displacement: Refer to manual for specific engine displacement 📄 Operational Details Operating Operating Conditions: Off-highway, construction sites, rough terrain