This 690-page New Holland T1510, T1520 Service Manual (OEM #84260810) puts the complete engine, hydrostatic transmission, and electrical system rebuild in your hands for both tractor models. Open it up and you get full wiring diagrams covering the safety controller, alternator, and starter circuits, plus hydraulic schematics for the variable displacement pump and control valve assembly. You also get a dedicated troubleshooting section and page after page of torque tables for clutch, brake, and axle work, right down to exploded views for parts identification. Torque the flywheel retaining cap screws to 69-78 N-m, and check single clutch disc thickness against a 3.2 mm spec with a 7.2 mm wear limit before you button it back up. No more flipping through a shop manual with grease on your hands trying to find the right page. Bookmarked by system, so you jump straight to hydrostatic transmission or electrical without scrolling, and it opens on your phone, tablet, or laptop right in the shop.
What's Inside This New Holland T1510, T1520 Manual
| System | Pages | Key Topics |
|---|---|---|
| General Information | 39-60 | Introduction, Precautionary Statements, Personal Safety, Machine Safety and Information, Safety, Tractor |
| Engine | 61-192 | Cylinder Head and Valve Train Components, Cylinder Block Assembly, Fuel Injector and Glow Plug, Timing Gears and Camshaft, Crankshaft and Main Bearings, Fuel System |
| Clutch | 193-216 | Single Clutch, Double Clutch, Clutch Pedal Assembly, Clutch Pilot Bearing, Clutch Release Bearing |
| Gear Transmission | 217-246 | 9 X 3 Gear Transmission, Transmission Assembly, Main Gear Shifter Rod, Main Shaft, Countershaft, FWD Drive Shaft |
| FWD Front Axle | 247-274 | Four Wheel Drive, Reduction Gear - Drop Box, Front Axle and Differential, Drive Pinion, Differential Gear, Front Wheel Toe-In |
| Differential, Rear Axle | 275-300 | Differential Assembly, Differential Lock, Drive Pinion, Rear Axle, Axle Seal |
| Hydrostatic Transmission | 301-336 | Variable Displacement Pump, Fixed Displacement Motor, Fluid Flow, Hydrostatic Unit, Hydrostatic Pump, Hydrostatic Motor |
| Power Take-Off Systems | 337-362 | Transmission Drive Power Take-Off, Live Power Take-Off, Output Shaft, Center Countershaft, Rear Countershaft, Mid-Mount PTO |
| Brakes | 363-368 | Rear Axle and Brakes, Brake Operation, Parking Brake, Brake Linkage Adjustment |
| Hydraulic System | 369-426 | Hydraulic Fluid Filter, Combination System Relief - Diverter Valve Manifold Assembly, Control Valve Assembly (Hpl), Hydraulic Pump, Remote Valves, Lift Cylinder |
| Steering | 427-480 | Power Steering System, Power Steering Control Motor, Power Steering Pump, Power Steering Cylinder, Power Steering Lines, Steering Column |
| Wheels, Tires and 2WD Axle | 481-498 | Two-Wheel Drive Components, Front Wheel Hub, Spindle, Front Axle - 2WD, Front Axle Pivot, Wheels and Tires - Tread Settings and Ballasting |
| Electrical System | 499-672 | Battery, Main Fuse (40 Amp), Fuse Block, Key Switch, Safety Controller, Alternator and Starter |
| Platform | 673-690 | Hood, Steering Wheel, Dash Panel, Seat, Roll Over Protection System (ROPS), Fuel Tank |
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| All Models | ||
| Flywheel Retaining Cap Screws Torque | 69 - 78 N·m (51 - 58 lb ft) | p. 74 |
| Brake Discs: Lining Groove Depth | 0.1 mm (0.004 in) | p. 364 |
| Brake Discs: Lining Groove Depth Allowable Limit | 0.0 mm (0.0 in) | p. 364 |
| HST Pump Trunnion Seal Installation Depth | 0.5 mm (0.0197 in) below trunnion counter bore | p. 324 |
| HST Port Block Oil Seal Installation Depth | 4 mm (0.157 in) below the port block surface | p. 329 |
| Hydraulic Pump Capacity | 23.3 L/min (6.2 US gal/min) | p. 372 |
| System Relief Valve Setting | 14700 ± 500 kPa (2133 ± 70 psi) | p. 372 |
| Differential Drive Pinion to Ring Gear Backlash Normal | 0.1 - 0.15 mm (0.004 - 0.006 in) | p. 276 |
| Differential Drive Pinion to Ring Gear Backlash Allowable Limit | 0.5 mm (0.020 in) | p. 276 |
| HST Models | ||
| Single Clutch Disc Thickness | 3.2 mm (0.1259 in) | p. 201 |
| Single Clutch Disc Thickness Allowable Limit | 7.2 mm (0.28 in) | p. 201 |
| T1520 | ||
| Engine Gross Horsepower | 26.0 kW (35.0 Hp) | p. 47 |
