New Holland T1510, T1520 Tractor Service Manual
691 pages · Publication 84260810
Fast free USA shippingShips in 1 business daySave 10% on 2 manuals, 15% on 3 or morePay by credit or debit card or with PayPal. No PayPal account needed.
Added to your cart. View cart
What's inside
From the manual's own table of contents: 75 sections, 501 entries. See sample pages (PDF, 482 KB)
SECTION 00 - GENERAL INFORMATION
SECTION 10 - ENGINE
SECTION 18 - CLUTCH
SECTION 21 - GEAR TRANSMISSION
SECTION 25 - FWD FRONT AXLE
SECTION 27 - DIFFERENTIAL, REAR AXLE
SECTION 29 - HYDROSTATIC TRANSMISSION
SECTION 31 - POWER TAKE-OFF SYSTEMS
SECTION 33 - BRAKES
SECTION 35 - HYDRAULIC SYSTEM
SECTION 41 - STEERING
SECTION 44 - WHEELS, TIRES AND 2WD AXLE
SECTION 55 - ELECTRICAL SYSTEM
SECTION 90 - PLATFORM
Introduction
Precautionary Statements
Personal Safety
Machine Safety and Information
Safety7 topics
- The Tractor
- Servicing the Tractor
- Operating the Tractor
- Driving the Tractor
- Operating the PTO
- Diesel Fuel
- Safety Frame (ROPS)
International Symbols
Specifications
General Dimensions
Minimum Hardware Tightening Torques
Metric Bolt Torque Specifications
Show all 75 sections
Lubricants1 topic
- Recommended Lubricants and Coolants
Adjustments3 topics
- Tire Inflation Pressure
- Engine Bolt Torque Specifications
- Engine Fuel System Bolt Torque Specifications
Special Tools1 topic
- Compression Test and Tools
Description of Operation -- Engine2 topics
- Cylinder Head and Valve Train Components
- Cylinder Block Assembly
Troubleshooting
Overhaul -- Engine71 topics
- Engine
- Preparation
- Fuel Injector and Glow Plug
- Removal
- Oil Pressure Switch
- Temperature Sending Switch and Alternator
- Fan, Water Pump, and External Oil Tube
- Head Cover
- Rocker Arm Shaft and Support Bracket
- Cylinder Head
- Valve Tappet
- Fuel Shutoff Solenoid
- Timing Gear Cover
- Timing Gears and Camshaft
- Oil Sump
- Oil Suction Tube and Strainer
- Connecting Rods, Bearings, Pistons, and Rings
- Flywheel
- Backplate and Oil Seal
- Crankshaft and Main Bearings
- Disassembly
- Inspection and Repair
- Valve Seats
- Valves
- Valve Guides
- Valve Springs
- Inspection and Replacement
- Rocker Arms
- Push Rods
- Assembly
- Cylinder Block
- Inspection
- Pistons
- Disassembly and Inspection
- Piston Rings
- Connecting Rods
- Pin to Bushing Clearance
- Connecting Rod Bearing Oil Clearance Check
- Pistons, Rings, and Connecting Rod
- Main Bearing and Thrust Washer
- Removal and Inspection
- Crankshaft
- Crankshaft Bearing (Bushing)
- Replacement
- Port Block
- Installation
- Timing Gear
- Standard
- Allowable Limit
- Camshaft
- Timing Gear Housing
- Front Oil Seal and Steering Pump Seal
- Crankshaft and Bearing Holder
- Standard Thrust
- Rear Oil Seal and Backplate
- Pistons and Connecting Rods
- Oil Suction Tube and Suction Strainer
- Camshaft and Camshaft Gear
- Idler Gear, Oil Pump, and Injection Timing
- Crankshaft Pulley
- Fuel Injection Pump
- Power Steering Pump
- Head Gasket Selection
- Valve Clearance Adjustment
- Water Pump and Cooling Fan
- External Oil Tube
- Glow Plug and Connector
- Fuel Injector
- Fuel Tubing
- Alternator and Temperature Sender Switch
- Exhaust Manifold
Description of Operation -- Engine Lubrication System8 topics
- Oil Filter
- Construction and Function
- Maintenance
- Oil Pump
- Installation and Adjustment
- Engine Oil Pressure Check
- Oil Pressure Relief Valve
- Oil Consumption
Description of Operation -- Cooling System5 topics
- Coolant
- Radiator Cap
- Thermostat
- Water Pump
- Cooling Fan
Overhaul -- Cooling System3 topics
- Radiator
- Separating the Tractor at the Clutch Housing/Engine
- Attaching the Clutch Housing to the Engine
Description of Operation -- Injection Pump15 topics
- General
- Governor System
- Injectors
- Breather Valve
- Fuel Variation Mechanism
- Delivery Valve Assembly
- CTD (Compact Timing Device) Mechanism
- Delivery Valves
- Fuel Delivery
- Injection Pump
- Repair
- Original Pump and Drive Components
- New Pump or Drive Component
- Injection Pump Timing
- Bleeding the Fuel System
Fuel Settings Adjustments1 topic
- Fuel Screw/High Idle
Description of Operation -- Governor1 topic
- Governor
Description of Operation -- Injectors1 topic
- Assembly and Adjustment
Description of Operation -- Engine Breather Valve
Description of Operation -- Single Clutch4 topics
- 2WD 9 x 3 Gear Transmission
- HST Models
- HST Drive Transmission
- Clutch Pedal Assembly
Overhaul -- Single Clutch1 topic
- Single Clutch
Adjustments -- Single Clutch3 topics
- Free-play Adjustment -- HST Models Only
- Clutch Stop -- HST and 9 x 3 Transmission Models
- Bolt Torques
Description of Operation -- Double Clutch1 topic
- x 3 Gear Transmission Models
Overhaul -- Double Clutch1 topic
- Double Clutch
Adjustments -- Double Clutch2 topics
- Free-play Adjustment -- 9 x 3 Gear Transmission Models with Double Clutch
- Clutch Stop -- 9 x 3 Transmission Models
Servicing Clutch-related Components6 topics
- Clutch Pilot Bearing
- Clutch Release Bearing
- Clutch Linkage Components
- Clutch Cross Shaft Bushings
- Clutch Pedal Bushings
- x 3 Gear Transmission
General Bolt Torque Specifications
Description of Operation21 topics
- Transmission Assembly
- Single Clutch Input Shaft
- Double Clutch Input Shaft
- Single and Double Clutch
- Main Gear Shifter Rod
- Main Shaft
- Reverse Idler Shaft
- Single Clutch Countershaft
- Double Clutch Countershaft
- Single Clutch PTO Countershaft
- Double Clutch PTO Countershaft
- Double Clutch FWD Drive Shaft
- FWD Shift Rod
- Rear Main Shaft
- Range Gear Shifter Rod
- Drive Pinion
- Pre-installation Instructions
- FWD Drive Shaft
- Reverse Idler
- Main Transmission Shift Lever
- Removal and Overhaul
Separating the Tractor1 topic
- Four Wheel Drive
Bolt Torque Specifications
Description of Operation -- Front-Wheel Drive Front Axle
Overhaul27 topics
- Front-Wheel Drive Front Axle
- Reduction Gear -- Drop Box
- Front Axle and Differential
- Front Axle
- Bearing Clearance
- Differential
- Gear Reduction -- Drop Box
- Differential Gear
- Ring Gear-to-Pinion Backlash Check and Adjustment
- Axle and Differential
- Reduction Gear Box
- Idler Case Vertical Shimming Procedure
- Bevel Gear-to-Pinion Backlash Check
- Front Axle -- 4WD
- Front Wheel Toe-in
- Checking Toe-In
- Adjusting Toe-In
- Ring Gear and Pinion Gear Pattern Specification and Adjustment
- Differential Assembly
- Differential Lock
- Disassembly (with HST Transmission)
- Disassembly (with 9 x 3 Transmission)
- Assembly and Installation
- Rear Axle
- Axle Seal
- Rear Axle/Center Housing
- Hydrostatic Transmission
Description of Operation -- Hydrostatic Transmission21 topics
- Variable Displacement Pump
- Operation
- Fixed Displacement Motor
- Fluid Flow
- Neutral Position
- Forward Position
- Reverse Position
- Hydrostatic Unit
- Precautions Before Disassembly
- Hydrostatic Pump
- Hydrostatic Motor
- Hydrostatic Motor Shaft
- Charge Pump
- Swash Plate
- HST Piston Pump Cylinder Block
- HST Motor Cylinder Block
- Charge Pump Relief Valve
- High Pressure Relief Valve
- Hydrostatic Pump and Port Block
- Hydrostatic Motor and Port Block
- HST Cooler Check Valve
Pressure Tests5 topics
- Transmission Drive Power Take-Off
- x 3 Gear Transmission -- Single Clutch (T1510 -- 2WD Only)
- Transmission Drive Power Take-Off: 4WD (9x3)
- Live Power Take-Off
- Power Take-Off Drive -- Hydrostatic Transmission
Overhaul -- Power Take-Off9 topics
- Power Take-Off
- Output Shaft
- Center Countershaft
- One-Way Clutch
- Rear Countershaft
- 9x3 Transmission
- HST Transmission
- Front Countershaft
- Shifter
Description of Operation -- Mid-Mount Power Take-Off
Overhaul -- Mid-Mount PTO14 topics
- Mid-Mount PTO
- Countershaft
- Shifter Arm
- Gearbox
- Mid-Mount PTO Gear Shifter Removal
- Mid-Mount PTO Output Shaft Removal
- Output Shaft Installation
- Gear Shifter Installation
- Rear PTO Components
- Rear Axle and Brakes
- Brake Operation
- Parking Brake
- Brakes and Final Pinion Overhaul
- Brake Linkage Adjustment
Description of Operation -- Hydraulic System14 topics
- Hydraulic Fluid Filter
- Combination System Relief -- Diverter Valve Manifold Assembly
- Control Valve Assembly (HPL)
- Neutral Position -- Fluid Flow
- Raising Position -- Fluid Flow
- Lowering Position -- Fluid Flow
- Bypass Spool -- Fluid Flow -- Closed Position
- Bypass Spool -- Fluid Flow -- Open Position
- Unload Valve
- Flow Control Valve
- Linkage Operation -- Single Lever -- Position Control
- Position Control Operation -- Neutral Position to Raise
- Raise Position to Neutral Position
- Neutral Position to Lowering Position
Overhaul -- Lift Cylinder7 topics
- Lift Cylinder
- Hydraulic Control Valve
- Combination System Relief Valve and Diverter Valve Assembly
- HPL Linkage Adjustments
- Adjustment Procedure
- Control Lever
- Adjustment
Description of Operation -- Hydraulic Pump and Filter3 topics
- Hydraulic Pump
- Pump Flow
- Break-in Procedure
Description of Operation -- Remote Valves5 topics
- Single-spool Rear Remote Valve
- Rear (Single-spool) Remote Valve
- Fluid Flow -- Neutral Position -- Rear (Single-spool) Remote System
- Fluid Flow -- Remote Cylinder Extending -- Rear (Single-spool) Remote System
- Fluid Flow -- Remote Cylinder Retracting -- Rear (Single-spool) Remote System
Overhaul -- Rear (Single-spool) Remote Valve11 topics
- Front (Two-spool) Remote Valve
- Fluid Flow -- Bucket Control -- Neutral and Lift Control -- Neutral
- Front (Two-spool) Remote Control System
- Fluid Flow -- Bucket Control -- Dumping and Lift Control -- Neutral
- Fluid Flow -- Bucket Control -- Dumping Regen and Lift Control -- Neutral
- Fluid Flow -- Bucket Control -- Roll Back and Lift Control -- Neutral
- Fluid Flow -- Bucket Control -- Neutral and Lift Control -- Raising
- Fluid Flow -- Bucket Control -- Neutral and Lift Control -- Lowering
- Fluid Flow -- Bucket Control -- Neutral and Lift Control -- Float
- Front (Two-spool) Remote Control Valve
- Relief Valve
Pressure Testing25 topics
- Main System Relief Valve
- Inlet Restriction Test
- Pump Efficiency Test
- Power Steering System
- Power Steering Control Motor
- Spool and Sleeve
- Drive Shaft
- Gerotor Pump
- Check Valve
- Power Steering Control Valve
- Power Steering Cylinder
- Power Steering Operation
- Fluid Flow -- Neutral Position
- Fluid Flow -- Left Turn
- Fluid Flow -- Right Turn
- Power Steering Manual Operation
- Steering Control Motor
- Steering Cylinder
- Power Steering Lines
- Steering Column
- Removal and Disassembly
- Pump, Steering Motor, and Relief Valve
- Test
- Test Results
- Two-Wheel Drive
Two-Wheel Drive Components6 topics
- Front Wheel Hub
- Spindle
- Front Wheel Hub and Spindle
- Front Axle – 2WD
- Front Axle Pivot
- Two Wheel Drive
Wheels and Tires -- Tread Settings and Ballasting12 topics
- 2WD Tread Setting
- FWD Tread Setting
- Rear Axle Tread Setting
- Tractor Weighting
- Weighting for Stability
- Weighting Limitations
- Rear Wheel Weight Installation
- Liquid Ballast
- Tire Pressure
- Wheel Nut Torque Specifications
- Component Location and Function
- Ground Locations
Description and Testing -- Electrical System Components69 topics
- Battery
- Electrolyte Level
- Main Fuse (40 Amp)
- Fuse Block
- Key Switch
- (T1520 Prior To Serial Numbers Z8NGK1151 and Z8NGL1146)
- Testing
- Heat Position
- Description
- Key Switch Troubleshooting -- Connector Wiring
- Light Switch
- Headlights
- Taillights
- Hazard/Turn Signal Combination Switch
- Hazard/Turn Signal Lights
- Transmission Range Safety Switch
- Rear PTO Safety Switch
- Mid PTO Safety Switch (Standard on HST Models/Optional for 9 x 3 Models)
- Seat Safety Switch
- Clutch Safety Start Switch
- Park Brake Switch
- Safety Alarm (Buzzer)
- Relays
- Safety Start Relay
- Tail Light Relays
- Removal (All Relays)
- Testing (All Relays)
- Installation (All Relays)
- Diodes
- Flasher Lights Diode Pack
- Charging System Diode
- Removal (All Diodes)
- Testing Flasher Lights Diode Pack
- Testing Charging System Diode
- Installation (All Diodes)
- Safety Controller
- Terminal Identification
- Testing Safety Start Circuit
- Testing Glow Plug Circuit
- Testing PTO Indicator Light Circuit
- Engine Glow Plugs
- Hazard Flasher/Turn Signal Control Module
- Fuel Level Sender
- Air Filter Restriction Switch
- Coolant Temperature Sending Unit
- Positive Battery Cable
- Numbers Z8NGK1151 and Z8NGL1146
- Serial Numbers Z8NGK1151 and Z8NGL1146
- Starting Circuit (Operator Present Or Not Present)
- Safe Operation Circuit (Operator Present)
- Safe Operation Circuit (Operator Not Present)
- Engine Glow Plug Circuit
- Lighting Circuit
- Hazard Flasher Circuit
- Right Turn Signal Circuit
- Left Turn Signal Circuit
- Engine Coolant Temperature Circuit
- Fuel Level Circuit
- Low Engine Oil Pressure Circuit
- Air Restriction Circuit
- PTO Indicator Light Circuit
- Charge Circuit
- Instrument Panel
- Instrument Panel Identification
- Removal, Testing & Installation
- Coolant Temperature Gauge
- Fuel Gauge
- Tachometer/Hourmeter
- Instrument Panel Bulb List
Specifications -- Alternator
Description of Operation -- Charging System2 topics
- Charging Circuit
- Principle of IC Regulator
Troubleshooting -- Alternator5 topics
- No Charging
- Insufficient Charging
- Overcharge
- Unstable Charging Circuit
- Abnormal Noise of Alternator
Testing and Overhaul -- Alternator6 topics
- Preliminary Alternator Tests
- Alternator Drive Belt
- Alternator Output
- Alternator
- Alternator Component Testing and Inspection
- Alternator Bench Check
Specifications -- Starter Motor
Description of Operation -- Starting System3 topics
- Starter Motor Assembly
- Starter Solenoid
- Pinion Clutch
Troubleshooting -- Starter Motor5 topics
- Pinion Shaft Fails to Advance
- Pinion Motor Rotates but No Rotation Transmitted to Engine
- Motor Rotates Before Pinion Meshes with Ring Gear
- Pinion Meshes with Ring Gear but Starting Motor Fails to Turn
- Motor Fails to Stop after Engine Starts and Key Switch is Turned Off
Testing and Overhaul -- Starter Motor16 topics
- Starter Motor
- Pinion Position Adjustment
- No Load Test
- Hood
- Side Covers
- Steering Wheel
- Dash Panel
- Seat
- Roll Over Protection System (ROPS)
- Foldable Roll Over Protection System (ROPS)
- Fuel Tank
- Rear Fenders
- Operator Platform
- Operating the Tractor
- Operating the PTO «0.0
- Safety Frame (ROPS)
General Dimensions
Minimum Hardware Tightening TorqueS2 topics
- Recommended Lubricants and Coolants
- Tire Inflation Pressure
Inside this manual
Real pages from this service manual (691 pages). Open the sample pages (PDF, 482 KB)
- Color page
Other manuals for this machine
Save 10% on 2 manuals, 15% on 3 or more. Other manuals are listed below. Editions cover different serial number ranges: check the serial coverage and tick only the ones that match your machine.
This manual: Service Manual 84260810$69.79
Added to your cart. View cart
This is a service manual
Here's how it compares to the other manual types.
This manual
Service manual
Factory repair procedures and technical information such as specifications, troubleshooting, and wiring and hydraulic diagrams, for the models and systems the manual covers. See What's inside for its topics.
Operator's manual
Safe operation, controls, maintenance schedules, lubrication points, inspections, and basic checks. Repair procedures are in the service manual.
Parts manual
Illustrated diagrams with factory part numbers for identifying components and ordering parts. Repair procedures are in the service manual.
Engine service manuals are sometimes sold separately, since certain machine models were offered with more than one engine option.
What it's used for
Factory manual for in-house farm and construction shop use. Straightforward, complete, and easy to follow. It contains the OEM information dealership service departments and parts counters use to diagnose problems, identify components, and perform maintenance or repairs correctly.
Service shops and owner/operators who repair their own equipment
Identifying correct parts and seeing how assemblies come apart and go back together
Keeping equipment running with less downtime
Factory manual, 691 pages
Quantity one is the manual described above.
Fast free USA shipping
Ships in 1 business day.
60-day returns
Free if the mistake is ours. A manual ordered in error must come back unopened in its shrink-wrap; you pay return shipping and a 20% restocking fee applies. Return policy
Binder not included
Manuals over about 300 pages may need a standard 3-ring binder, which you can buy locally to keep the pages organized for shop use.
Questions about model, serial number, engine coverage or contents? Contact us before purchasing and we'll help confirm it's the right manual. Please verify the manual type, machine model, serial number range and engine coverage before purchasing: manuals ordered in error carry a 20% restocking fee (return policy).