Part of the New Holland Repair Manuals.
This is the factory service manual for the New Holland T4 narrow and vineyard tractors: the T4.75N, T4.85N, T4.95N and T4.105N narrow models and the T4.65V, T4.75V, T4.85V, T4.95V and T4.105V vineyard models. It follows the CNH product structure, so you work from the system rather than a chapter number: engine, clutch, transmission, four-wheel drive, axles, PTO, brakes, hydraulics, hitches, steering, wheels, cab climate and electrical. The hydraulic section gives the pump outputs and the pressure valve settings, and the electrical section runs from page 931 to page 1982, most of it schematic sheets, harness drawings and fault-code tables.
What's Inside This Manual
| System | Pages | Key Topics |
|---|---|---|
| Introduction and Standard Torques | 11-22 | How to Use the Manual, Shop Safety, Standard Tightening Torque Tables, Approved Fluids and Consumables |
| Engine | 23-34 | Engine Installation and Mountings, Ancillaries and Drive Take-Offs, Engine Removal and Refit |
| Clutch | 35-74 | Clutch Assembly and Release Mechanism, Pedal Free Play, Clutch Removal and Overhaul |
| Transmission | 75-214 | Mechanical and Power-Shuttle Transmissions, Shuttle Unit and Range Gears, Synchronisers and Shift Forks, Control Valves, Transmission Strip-Down and Reassembly |
| Four-Wheel Drive (4WD) System | 215-246 | 4WD Engagement Clutch and Control, Drive Shaft and Supports, 4WD Testing and Overhaul |
| Front Axle System | 247-376 | Driven Front Axle, Bevel Drive and Differential, Hub Reducers, Steering Knuckles and Pivots, Axle Rebuild |
| Rear Axle System | 377-424 | Rear Bevel Gear Pair and Differential, Differential Lock, Final Drives, Bearing Preload and Backlash |
| Power Take-Off (PTO) | 425-486 | Rear PTO Clutch and Brake, Speed Selection and Output Shaft Change, PTO Control, PTO Overhaul |
| Brakes and Controls | 487-548 | Wet Disc Service Brakes, Parking Brake, Pedal Adjustment, Bleeding the Brake Circuit |
| Hydraulic Systems | 549-708 | Hydraulic Pumps and Their Rated Outputs, Maximum Pressure Valve Calibration, Flow Control and Hydraulic Motor Circuits, Rear Lift Operation and Pressure Rise, Control Valves, Pump and Valve Overhaul |
| Hitches, Drawbars and Implement Couplings | 709-806 | Rear Three-Point Hitch, Lift Links and Stabilizers, Front Hitch, Drawbars and Pick-Up Hitch, Implement Coupling and Setting |
| Steering | 807-852 | Hydrostatic Steering Unit and Circuit, Steering Control Valve and Cylinder, Steering Column, Fault Finding |
| Wheels | 853-860 | Wheel and Tyre Fitment, Narrow and Vineyard Track Settings, Wheel Nut Torques |
| Cab Climate Control | 861-930 | Heating, Ventilation and Air Conditioning, Compressor and Condenser, Refrigerant Handling, Charging and Leak Testing |
| Electrical Systems: Schematic Sheets | 931-975 | Numbered Electrical Schematic Sheets by Build, Including the Power-Shuttle Circuits, Component Location |
| Electrical Systems: Harnesses and Connectors | 976-1399 | Complete Wire Harness Drawings, Connector Component Diagrams, Fuse and Relay Layouts, Pin-Out Tables |
| Electrical Systems: Starting, Charging and Electronic Modules | 1400-1529 | Engine Starting System, Charging Circuit, Electronic Control Modules, Module Testing and Configuration |
| Electrical Systems: Fault Codes and Diagnostics | 1530-1982 | Fault-Code Index and Tables, Guided Diagnostic Test Procedures, Circuit-Level Troubleshooting |
| Platform, Cab, Bodywork and Decals | 1983-2045 | Cab and Platform Assembly, Bodywork Panels, Hood and Grille, Glazing, Decals, Component Removal |
| Special Tool Index | 2046-2057 | Part Numbers of the Special Service Tools Each Procedure Calls for |
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| Hydraulic system | ||
| Maximum pressure valve calibration | 190 to 195 bar (2755 to 2827 psi) | |
| Flow control output | 18 to 22 l/min | |
| Rear lift, end of lifting movement | ||
| Oil pressure rise | 170 to 175 bar (2465 to 2537 psi) | |
| Standard pump | ||
| Rated output, Standard pump | 28.19 l/min; 11.35 l/min at 1000 rpm | |
| High-output pump | ||
| Rated output, High-output pump | 34.77 l/min; 14 l/min at 1000 rpm | |
| Implement hydraulic motor | ||
| Maximum flow rate, Implement hydraulic motor | 20 l/min | |
| Auxiliary control valves | ||
| Maximum flow rate, Auxiliary control valves | 20 L/min on pre-modification models, 33 L/min after modification | |
