Part of the New Holland Repair Manuals.
This is the full factory repair manual for the New Holland TND and TNS series tractors, the 2WD and 4WD TN55, TN65, TN70 and TN75 built on the same 3-cylinder chassis. It is the dealer document, split the way New Holland numbered the tractor: engine, clutch, transmissions, front-wheel drive, axles, PTO, brakes, hydraulics, steering, air conditioning, electrical and cab. The engine and hydraulic sections carry the real numbers a rebuild needs, the electrical section runs from page 1309 to page 1786 with wiring schematics and connector views for every serial-number build, and each section closes with its own specifications, tightening torques, special tools and overhaul procedures.
What's Inside This Repair Manual
| System | Pages | Key Topics |
|---|---|---|
| General | 49-56 | General Service Instructions, Shop Safety Regulations, Approved Consumables and Lubricant Specifications |
| Engine | 57-156 | 3-Cylinder 2931 Cm3 Direct-Injection Diesel, Compression Ratio and Power by Model, Bosch Rotary Injection Pump Timing, Injector Calibration, Cylinder Head and Valve Train, Crankshaft and Pistons, Lubrication and Cooling Circuits, Engine Overhaul |
| Clutch | 157-182 | LuK Single-Plate and Dual 11 Inch Clutches, Coplanarity Adjustment of the Release Levers, Main Clutch and PTO Clutch Control Linkages, Clutch Removal and Refitting |
| Transmissions | 183-548 | Mechanical 8x8 and 16x16 Synchro-Command Gearbox, Power Shuttle 8x8 and 16x16, Shuttle Unit, Range Gear, Creeper, Shift Linkage, Gearbox Strip-Down and Reassembly |
| FWD Transfer Box and Auto FWD | 549-656 | Front-Wheel-Drive Transfer Box, Auto FWD Engagement Logic, Electrohydraulic FWD Clutch, Transmission Shaft, Transfer Box Overhaul |
| Front Axle (FWD) | 657-754 | Driven Front Axle and SuperSteer Axle, Bevel Drive and Differential, Epicyclic Hub Reduction, Steering Knuckles, Axle Removal and Rebuild |
| Rear Mechanical Drive | 755-784 | Rear Bevel Gear Pair and Differential, Differential Lock, Lateral Final Drives, Bearing Preload and Backlash Setting |
| Mechanical Power Take-Off | 785-802 | Mechanically Engaged PTO, Servo-Assist PTO Control, PTO Speed Selection, Output Shaft Change, PTO Clutch Overhaul |
| Braking System | 803-824 | Wet Disc Service Brakes, Right and Left Brake Removal, Parking Brake, Brake Pedal Free Play, Bleeding the Brake Circuit |
| Hydraulic System | 825-1212 | High-Pressure and Low-Pressure Circuits, Hydraulic Pump, Mechanically Controlled Hydraulic Lift, Draft Control, Position Control and Float, Remote Control Valves, Three-Point Linkage, Hydraulic Schematics and Pressure Testing |
| Steering | 1213-1248 | Hydrostatic Steering Wheel Unit, Steering Control Valve, Steering Cylinder, Hydraulic Steering Circuit Fault Finding |
| Axles and Wheels | 1249-1268 | Two-Wheel-Drive Front Axle, Stub Axles and Hubs, Wheel Track Adjustment, Tyre Fitment and Wheel Torques |
| Cab Air Conditioning System | 1269-1308 | Sanden SD5H11 Compressor, Condenser, filter/dryer and Thermostatic Expansion Valve, Refrigerant Handling Safety, A/C Circuit Charging and Leak Testing |
| Electrical System | 1309-1786 | Complete Wiring Schematics and Harness Connector Views for Every Serial-Number Build, Starting and Charging System, Starter Motor and Alternator Overhaul, Instrument Cluster, Lighting, Fuses and Relays, Circuit Test Procedures |
| Cab | 1787-1814 | Cab and Platform Assembly, Hood and Protective Grill, Safety Frame Roof, Cab Glazing, Instrument Panel Guards |
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| All models | ||
| Engine | 3-cylinder in-line, 2931 cm3, direct injection, 4-stroke diesel | |
| Valve clearance, intake and exhaust | 0.30 +/- 0.05 mm | |
| Engine compression, in good order | 25.5 to 27.5 bar (370 to 399 psi) | |
| Bosch pump timing, start of delivery | 9 degrees +/- 0.5 before TDC | |
| Fuel tank capacity | 75 litres (19.8 US gal) | |
| Cooling system capacity | 10.0 litres without cab, 12.0 litres with cab | |
| TN55D / TN55S | ||
| Maximum power, TN55D / TN55S | 37 kW (50 hp) at 2300 rpm | |
| TN65D / TN65S | ||
| Maximum power, TN65D / TN65S | 44 kW (60 hp) at 2300 rpm | |
| TN70D / TN70S | ||
| Maximum power, TN70D / TN70S | 51 kW (70 hp) at 2300 rpm | |
| TN75D / TN75S | ||
| Maximum power, TN75D / TN75S | 53 kW (72 hp) at 2300 rpm | |
| TN55 / TN65 naturally aspirated | ||
| Compression ratio, TN55 / TN65 naturally aspirated | 17:1 | |
| TN70 / TN75 turbocharged | ||
| Compression ratio, TN70 / TN75 turbocharged | 16.5:1 | |
