Part of the New Holland Repair Manuals.
This downloadable PDF is the complete repair manual for the New Holland 3415 tractor, OEM publication 87028646. Across 424 pages it covers every major system on the machine: the N844L four cylinder diesel engine, fuel injection, electrical circuits, clutch, the 12 x 4 non-synchromesh transmission, PTO, differential and rear axle, brakes, hydraulics, power steering, front axle, and wheels, right through to splitting the tractor for major repairs.
Each section pairs step by step overhaul procedures with troubleshooting charts, torque values, and factory specifications, from cylinder head bolt torques to hydraulic pump output. The electrical chapters describe the starting, charging, glow plug, lighting, and warning light circuits in detail.
Whether you are chasing a no start condition, resealing a leaking hydraulic system, or rebuilding the engine, this service manual gives you the same information a New Holland dealer technician works from, ready to print or use on any device.
What's Inside This New Holland 3415 Manual
| System | Pages | Key Topics |
|---|---|---|
| Engine Systems | 3-80 | Engine and Lubrication System, Engine Overhaul, Engine Cooling System, Engine Troubleshooting, Engine Specifications, Assembly Torques |
| Fuel Systems | 81-116 | Specifications, Torque Specifications, Special Tools, Operation, Troubleshooting, Fuel Variation Mechanism, Ctd, Pumping Elements |
| Electrical System | 117-194 | Electrical System Description and Operation, Circuits Description and Operation, Starting Circuit, Lighting Circuit, Glow Plugs Circuit, Warning Lights Circuit |
| Clutch | 195-208 | Description, Engine Flywheel, Clutch Pilot Bearing, Clutch Release Bearing, Clutch Pedal Bushings, Adjustments, Troubleshooting, Specifications |
| Transmission Systems | 209-242 | Non-Synchromesh 12 X 4 Gear Transmission, PTO Input Shaft, Shift Levers, Creeper Gear Option, Troubleshooting, Specifications |
| Power Take-Off Systems | 243-250 | Description and Operation, PTO Rear Countershaft Removal, PTO Countershaft Removal, Output Shaft Removal, Output Shaft Disassembly, Power Take-Off Lever and Shifter Removal |
| Differential, Rear Axle and Brakes | 251-272 | Description and Operation, Differential Lock, Rear Axle, Differential Overhaul, Drive Pinion, Pinion Bearing Pre-Load - Constant Pull, Rear Axle Overhaul, Brakes |
| Hydraulic System | 273-356 | Operation, Linkage Operations, Overhaul, Hpl Cylinder Head, Control Valve Assembly, Combination System Relief-Diverter Valve Assembly, Adjustments |
| Steering System | 357-388 | Description, Power Steering Control Motor, Power Steering Pump, Power Steering Operation, Manual Operation, Steering Control Motor, Power Steering Pump and Reservoir |
| Front Axle and Related Parts | 389-396 | Description, Front Wheel Hub, Spindle Removal, Specifications |
| Wheels and Tires | 397-404 | Tread Setting, Adding Weight, Front End Counter Weights, Rear Wheel Weights, Weight Limitations, Liquid Ballast, Wheel Mounting Hardware |
| Separating the Tractor | 405-424 | Front Axle, Separating the Tractor Between the Front End and the Engine, Separating the Tractor Between the Engine and Transmission Clutch Housing, Transmission Removal |
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| Engine Identification | N844L | p. 6 |
| Tractor Model | 3415 | p. 6 |
| Valve Spring Out of Round (Standard) | 1.2 mm (0.047") | p. 16 |
| Valve Spring Out of Round (Maximum) | 2.0 mm (0.079") | p. 16 |
| Cylinder Head Gasket Thickness (Model 3145, From 0.2 to 0.3 mm) | 0.5 mm (0.0197") | p. 18 |
| Cylinder Head Gasket Thickness (Model 3145, From 0.3 to 0.4 mm) | 0.4 mm (0.0157") | p. 18 |
| Outside Diameter | 9.45 in. (240 mm) PTO | p. 206 |
| Inside Diameter | 6.3 in. (160 mm) PTO | p. 206 |
| Hydraulic Fluid Filter replacement interval | after the first 50 hours of service and every 300 hours thereafter | p. 277 |
| Hydraulic filter replacement interval | after the first 50 hours of use and every 300 hours thereafter | p. 328 |
| Hydraulic oil overheats - Restricted filter | Replace filter. | p. 353 |
| Hose w/7/16-20 FJIC SW x Disconnect Fitting 7/16-20 MJIC x 1/2 MNPT | FNH02106 | p. 355 |
