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Komatsu
Komatsu HD785-7 Dump Truck Workshop Service Manual Repair
Komatsu HD785-7 Dump Truck Workshop Service Manual Repair
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$16.99
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$16.99
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Vehicle data plateRef 77377
- Brand
- Komatsu
- Vehicle
- Dump Truck
- Models covered
- Engines, HD785-7, Misc
- Format
- PDF, searchable, print-ready
- Delivery
- Instant download after checkout
- Language
- English
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What happens after you pay
- Download link opens on the order page immediately
- The same link is emailed to you โ re-download any time
- Open on phone, tablet or PC; print only the pages you need
- Not sure it covers your model year? Ask us before you buy
๐ท๏ธ Basic Information
Identification
Make:
Komatsu
Model:
HD785-7
Vehicle Type:
Dump Truck
Generation
Generation Identifier:
Dash 7 Series
๐ Introduction
Market Position
Vehicle Segment:
Large rigid frame mining and construction haul truck
Competitive Analysis
Key Competitors:
Caterpillar 777 series, Hitachi EH750, Liebherr T 264
Key Features
Payload Capacity:
Approximately 42 metric tons (46 US tons) payload capacity
Engine Power Output:
Designed for high power-to-weight ratio for efficient hauling
Durability:
Built for demanding off-highway applications and harsh environments
๐ Manual Details
Coverage Areas
Manual Scope:
Comprehensive workshop service and repair
Page Count
Estimated Page Count:
Over 1000 pages (typical for this class of equipment)
Manual Type
Manual Classification:
Workshop Service Manual / Repair Manual
Language
Language:
English
Format
Digital Format:
PDF
๐ Manual Coverage
Systems Covered
Engine System:
Full diagnostic, repair, overhaul, and specifications for Komatsu SAA6D170E-5 engine
Transmission System:
Repair, adjustment, and troubleshooting of the Komatsu D155-1 planetary transmission
Hydraulics System:
Service procedures for hoist, steering, braking, and auxiliary hydraulic systems
Electrical System:
Wiring diagrams, component testing, troubleshooting for engine control, transmission control, and machine functions
Braking System:
Maintenance, inspection, and repair of wet disc brakes and retarder system
Steering System:
Service and repair of the Komatsu orbitrol steering system
Suspension System:
Inspection and maintenance of hydropneumatic suspension cylinders
Chassis And Body:
Frame inspection, body component repair, dump body hoist cylinder service
Cooling System:
Radiator service, fan clutch operation, coolant specifications
Fuel System:
Fuel injection system diagnostics, fuel filter replacement, fuel line service
Exhaust System:
Turbocharger inspection, muffler service, emission control component information
Operator Station:
Cabin maintenance, HVAC system service, control panel diagnostics
Procedures Included
Maintenance Procedures:
Detailed scheduled maintenance tasks and intervals
Troubleshooting Guides:
Systematic diagnostic trees for common and complex issues
Repair Procedures:
Step-by-step instructions for component removal, repair, and reinstallation
Disassembly And Assembly:
Complete instructions for major component rebuilds (engine, transmission, hydraulics)
Adjustment Procedures:
Torque specifications, valve adjustments, brake adjustments
Diagnostic Techniques:
Information on using diagnostic tools and interpreting fault codes
Technical Depth
Depth Of Information:
In-depth coverage suitable for professional technicians, including complete engine and transmission overhauls
๐ Manual Specifications
File Format
PDF Quality:
High-resolution scans with searchable text for easy navigation
Print Quality
Printability:
Printable format for use in workshop environments
Binding Type
Binding Type For Printed Version:
Not applicable (digital download)
Paper Type
Paper Type For Printed Version:
Not applicable (digital download)
โ๏ธ Engine Specifications
Primary Engine
Engine Model:
Komatsu SAA6D170E-5
Engine Type:
Turbocharged, Aftercooled, Direct Injection Diesel
Displacement:
20.5 Liters (1250 cu. in.)
Performance
Net Horsepower:
Approximately 523 HP (390 kW) at 2000 RPM
Peak Torque:
Approximate peak torque around 1400 RPM
Fuel System
Fuel Injection System:
High-pressure common rail with electronic control unit (ECU)
Emission Standards:
Compliant with Tier 2/Stage II emissions standards
๐ง Transmission
Standard
Transmission Type:
Komatsu Heavy-Duty Planetary Powershift Transmission
Number Of Gears:
6 Forward / 1 Reverse (typical configuration)
Features
Transmission Control:
Electronic Shift Control with automatic gear selection and lock-up clutch
Transmission Fluid Type:
Komatsu Genuine TO-4 or equivalent
๐ Dimensions
Exterior
Overall Length:
Approximately 9.9 meters (32.5 ft)
Overall Width:
Approximately 4.0 meters (13.1 ft)
Overall Height:
Approximately 4.4 meters (14.4 ft)
Weights
Operating Weight:
Approximately 65,000 kg (143,000 lbs)
Payload Capacity:
42,000 kg (92,594 lbs)
Cargo
Body Volume Heaped:
Approximately 24.2 mยณ (31.7 cu. yd.)
Body Volume Struck:
Approximately 18.1 mยณ (23.7 cu. yd.)
๐ก๏ธ Safety Features
Ratings
Rollover Protection Structure Rops:
ROPS (Roll-Over Protective Structure) certified cab
Active Features
Braking System Features:
Full hydraulic, oil-immersed, multi-disc brakes with parking brake interlock
Retarder System:
Integrated dynamic retarder for downhill speed control
Steering System Safety:
Secondary steering system for emergency operation
Passive Features
Operator Station Design:
Vibration-dampened cab for operator comfort and safety
๐ก Technology Features
Infotainment
Operator Interface:
Digital display for machine monitoring and diagnostics
Driver Assistance
Payload Monitoring:
Integrated payload meter for load optimization
Connectivity
Telematics:
Provision for Komatsu KOMTRAX telematics for remote monitoring and maintenance tracking (model specific)
๐ง Maintenance
Service Intervals
Engine Oil Change Interval:
Typically 500 hours, depending on operating conditions and oil analysis (refer to manual for specifics)
Hydraulic Oil Change Interval:
Typically 2000 hours, depending on operating conditions and oil analysis (refer to manual for specifics)
Transmission Oil Change Interval:
Typically 1000 hours, depending on operating conditions and oil analysis (refer to manual for specifics)
Fluid Specifications
Engine Oil Specification:
API CJ-4 or equivalent SAE 15W-40 or 10W-30 (refer to manual for exact viscosity)
Hydraulic Oil Specification:
Komatsu genuine hydraulic oil or ISO VG 46 (refer to manual for specific application)
Transmission Oil Specification:
Komatsu Genuine TO-4 or equivalent SAE 30 or 50 (refer to manual for exact viscosity)
Coolant Specification:
Komatsu Super Long Life Coolant (SLLC) or equivalent (50% ethylene glycol and water mixture)
Known Issues
Common Wear Items:
Brake wear, hydraulic cylinder seals, suspension bushings, turbocharger wear
Electrical System Challenges:
Connector corrosion in harsh environments, sensor failures
Engine Performance Issues:
Potential for injector issues or turbocharger failure under extreme duty cycles
๐ Vehicle History
Brand Heritage
Manufacturer Specialization:
Komatsu is a global leader in construction and mining equipment manufacturing
Model Evolution
Development Focus:
The HD785-7 represents a robust, mid-size class haul truck designed for efficiency and reliability in demanding applications.
Production
Production Period:
Part of the later generations of Komatsu's rigid frame dump trucks.
๐ Awards & Recognition
Recognitions
Industry Recognition:
Komatsu equipment is globally recognized for reliability and durability in heavy-duty applications.
Delivery & file format
Delivery & file format
This is a digital PDF download, not a printed book. After payment the download link appears on your order confirmation page and is emailed to the address you entered. Files open in any PDF reader on phone, tablet or computer and can be printed.
Check the model year and engine before you buy
Check the model year and engine before you buy
Manufacturers change procedures, wiring and part numbers between model years and engine options. If your VIN plate shows a year or engine code that is not listed on the data plate above, contact us with the model, year and VIN and we will confirm coverage before you order.
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Komatsu HD785-7 Dump Truck Workshop Service Manual Repair
Komatsu / Dump Truck ยท PDF ยท Instant download
$16.99
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