Part of the New Holland Repair Manuals.
The factory repair manual for New Holland DC75, DC85 and DC95 crawler dozers, publication 6-76640 dated 15/06/2004, bound as separately numbered chapter booklets (9890 through 9926). This is a teardown book: removal, installation, disassembly, assembly, exploded and sectional views across nine lettered sections.
It covers the hydrostatic power train with pressure tests and settings, primary and secondary hydraulic distribution, engine, fuel and cooling systems, service and parking brakes, steel tracks and rollers, planetary final drives, cab, ROPS and HVAC, the blade lift, tilt and angle circuits, and the ripper.
Machine-specific torque tables and wiring harness schematics are in here too. This is the book dealer techs pulled these machines apart with.
What's Inside This Repair Manual
| System | Pages | Key Topics |
|---|---|---|
| Introduction | 1-22 | Basic Instructions, Diagnostics, Hydraulic Contamination, General Specification, Torque Specifications, Straight Thread and Pipe Fittings, Conversion Factors |
| Distribution Systems - Primary Hydraulic Power | 23-98 | Primary Hydraulic Power System, Stack Valve, Relief Valve, Oil Filter, Oil Cooler, Thermal Bypass Valve, Stack Valve Inlet Section |
| Distribution Systems - Secondary Hydraulic Power | 99-126 | Relief Valve, Stack Valve |
| Distribution Systems - Electrical Power | 127-262 | Electrical Power System, Battery, Fuse and Relay Box Fuse, Fuse and Relay Box Relay, Alternator, Wiring Harness, Alternator Drive System Belt |
| Power Production - Engine | 263-280 | Engine, Sensing System Speed Sensor |
| Power Production - Fuel and Injection System | 281-298 | Fuel Tank, Throttle Command Electrical Throttle, Throttle Command Mechanical Throttle, Throttle Command Electronic Throttle, Fuel Shut-Off Electrical Shut-Off, Sensing System Air Cleaner Restriction |
| Power Production - Engine Coolant System | 299-321 | Engine Coolant System, Radiator, Sensing System Coolant Temperature, Lubrication System, Sensing System Oil Pressure |
| Power Production - Starting System | 322-368 | Engine Starter, Starter Solenoid, Cold Start Aid, Start Control Start Switch, Drive Shaft |
| Power Train - Hydrostatic Transmission | 369-488 | Transmission Hydrostatic, Command Up/Down Switch, Pump, Motor, Diagnostic Connector, Command Inching Pedal, Pump Left Hand Pump |
| Travelling - Service Brake | 489-508 | Service BRAKE Hydraulic, Command, Control Valve |
| Travelling - Parking Brake | 509-524 | Command, Parking BRAKE Hydraulic, Sensing System Proximity Switch, Electrical Control Relay |
| Travelling - Wheels and Tracks | 525-647 | WHEELS and TRACKS Tracks, Steel Track Pad, Roller Lower Roller, Roller Upper Roller, Idler Wheel, Steel Track, Frame |
| Travelling - Final Drive | 648-744 | Final Drive, Housing Wheel Hub Housing, Gear Planetry Gearset, Gear Spur Gear, Housing Sandwich Housing, Housing Input Bearing Housing, Housing Drop Box |
| Body and Structure - User Controls and Seat | 745-778 | Seat Suspension System, Instrument Panel |
| Body and Structure - User Platform | 779-805 | ROPS, User Platform, Tilt System Pump, Wiper System Relay, Door, Window and Windscreen, Heat Command Fan Speed Switch, Ventilation System |
| Body and Structure - Air Conditioning | 806-861 | Compressor, Compressor Magnetic Clutch, Compressor Belt, Evaporator, Expansion Valve, Receiver/Drier, Sensing System Temperature Sensor |
| Body and Structure - Heating and Ventilation | 862-890 | Command, Condenser, Evaporator, Heater, Ventilation System Motor, Electrical Control, Electronic HVAC Control |
| Body and Structure - Safety and Security | 891-905 | Back Up Alarm Relay, Audio Alarm, Tool Support |
| Tool Positioning - Lifting | 906-949 | Cylinder, Command, Control Valve, Tool Support |
| Tool Positioning - Tilting | 950-984 | Cylinder, Command, Control Valve |
| Tool Positioning - Swinging | 985-1028 | Cylinder, Command, Control Valve, Command Lever |
| Tools and Couplers - Digging | 1029-1058 | Ripper, Ripper Cylinder, Ripper Bushing, Landscaping Dozer Blade, Cylinder |
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| Hydraulic reservoir refill capacity (DC75, DC85, DC95) | 75.7 L / 20 US gal | p. 23 |
| Type of hydraulic oil (DC75, DC85, DC95) | NEW HOLLAND AMBRA MULTI TRAN | p. 23 |
| Temperature of hydraulic oil when testing (DC75, DC85, DC95) | 52 - 79 °C / 125 - 175 °F | p. 23 |
| Hydraulic pump output (DC75, DC85, DC95) | 76.8 L/min at 207 bar at 2000 RPM / 20.3 US gpm at 3000 psi at 2000 RPM | p. 27 |
| Main relief valve pressure (All models at 2000 RPM) | 203 - 214 bar / 2950 - 3100 psi | p. 23 |
| Dozer blade lift time (ground level to full height) (DC75, DC85, DC95) | 2 seconds | p. 23 |
| Spool travel Neutral to pressure - lift, tilt and auxiliary (DC75, DC85, DC95) | 7.9 mm / 0.31 in | p. 12 |
| Spool travel Neutral to pressure - angle section (DC75, DC85, DC95) | 6.6 mm / 0.26 in | p. 26 |
| Spool travel Neutral to float - lift (DC75, DC85, DC95) | 13.5 mm / 0.53 in | p. 26 |
| Main relief valve (calibration) (DC75, DC85, DC95) | 203 - 214 bar / 2950 - 3100 psi | p. 23 |
| Circuit relief valves tested with hand pump (calibration) (DC75, DC85, DC95) | 214 - 227 bar / 3100 - 3300 psi | p. 23 |
