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 |
New Holland 3415 Common Problems This Manual Covers
Hydraulic fluid loss and leaking connections
Owners report sudden hydraulic fluid loss from degraded hose connections, leaving the three point hitch and loader dead. The Hydraulic System section walks through operation, overhaul of the control valve assembly and relief-diverter valve, and the adjustments needed after resealing.
Manual Section: Hydraulic System p. 273Tractor cranks but will not start
No start complaints on the 3415 often trace to the neutral safety switch, ignition switch, or a shorted glow plug circuit rather than the engine itself. The Electrical System section covers the starting circuit and glow plugs circuit so you can test each link before replacing parts.
Manual Section: Electrical System p. 117PTO will not engage properly
A broken disengagement spring or worn internal components can leave the PTO stuck in or out of gear. This section covers removal and disassembly of the PTO countershaft, output shaft, and the lever and shifter mechanism.
Manual Section: Power Take-Off Systems p. 243Engine overheating or losing power
Overheating under load points to the cooling system, thermostat, or internal engine wear. The Engine Systems section includes cooling system overhaul, engine troubleshooting charts, and full engine specifications and assembly torques for a proper diagnosis or rebuild.
Manual Section: Engine Systems p. 3Clutch slipping or dragging
Worn release bearings, pilot bearings, and pedal bushings cause slipping, dragging, and a stiff pedal on these tractors. The Clutch section covers each component along with adjustments, troubleshooting, and bolt torques.
Manual Section: Clutch p. 195Hard starting and rough fuel delivery
Air in the fuel system, injection pump timing, and worn injectors cause hard starts and uneven running on the N844L diesel. The Fuel Systems section covers bleeding, the spill-timing procedure, governor adjustments, and injector service.
Manual Section: Fuel Systems p. 81Heavy or erratic power steering
Steering that gets heavy or wanders usually comes back to the power steering pump, control motor, or relief pressure. This section covers pump and control motor overhaul plus system operation, including manual operation when the pump fails.
Manual Section: Steering System p. 357Frequently Asked Questions
Which tractor and engine does this manual cover?
It covers the New Holland 3415 tractor with the 47 horsepower N844L four cylinder diesel engine (2216 cc, rated 2600 RPM). It is the full repair and service manual, OEM publication 87028646, at 424 pages.
Does it include the cylinder head bolt torque specs?
Yes. The Engine Troubleshooting, Specifications, and Special Tools section lists cylinder head bolt torque at 98 to 103 N·m (73 to 77 ft lbs), along with valve lash, valve spring specs, and other assembly torques. p. 63
Does it cover the electrical system and glow plugs?
Yes. The Electrical System section describes and troubleshoots the starting, charging, lighting, glow plugs, and warning lights circuits, including alternator adjusting voltage. It is the place to start for no start and dead short problems. p. 117
Is the transmission covered, including the creeper gear?
Yes. The Transmission Systems section covers the non-synchromesh 12 x 4 gear transmission with full overhaul, PTO input shaft, shift levers, troubleshooting, and specifications, and includes the Creeper Gear Option. p. 209
What do I get after purchasing this New Holland 3415 manual?
A 424-page Service Manual in searchable PDF format, available the moment you complete checkout. View on computer, tablet, or phone, with no shipping wait.
Are there any print restrictions on this New Holland 3415 manual?
Absolutely. No DRM or copy protection. Print the whole manual or just the pages you need. Any home or office printer works.
Does this New Holland 3415 Service Manual have electrical diagrams?
Yes, this New Holland 3415 Service Manual includes complete electrical wiring diagrams, wire routing, and connector pinouts.
Reviews
There are no reviews yet.