Part of the New Holland Repair Manuals.
Electrical systems fill the largest part of this book. You get functional schematics for ADIC, EEM3, FMGR/SGR, ECCU3 and EDC. CAN bus and ISO bus layouts, single and dual battery harness frames, connector views and fault codes by controller sit alongside them.
The book also covers the 620 series common rail engine, CVT pressure tests and hydrostat, 4WD, axles, front and rear PTO, brakes, CCLS hydraulics, steering with autoguidance, and cab A/C.
This is New Holland part number 47505533, English, February 2013.
What's Inside This New Holland T7510–T7550 Series Manual
| System | Pages | Key Topics |
|---|---|---|
| Introduction and Specifications | 1-27 | Contents, Environmental Guidance, Safety Rules, Standard Tightening Torques, Lubricants, Fluid Capacities |
| Engine | 28-173 | Engine and Crankcase, Valve Drive and Gears, Cylinder Heads, Pistons and Connecting Rods, Crankshaft and Flywheel, Common Rail Fuel Injection, Turbocharger, Cooling and Lubrication |
| Continuously Variable Transmission (CVT) | 174-381 | CVT Operation, External Controls, System Pressure Tests, Hydraulic Schemas, Lubrication, Selector Drum, Clutch Assemblies, Hydrostat |
| Four-Wheel Drive (4WD) System | 382-423 | 4WD Clutch, Electro-Hydraulic Control, Clutch Shaft, Bearing Clearance, Drive Shaft |
| Front Axle System | 424-633 | Powered Front Axle, Front Bevel Gear Set and Differential, Final Drive Hubs, Steering Knuckles and Shafts, Axle Suspension Control |
| Rear Axle System | 634-695 | Powered Rear Axle, Rear Bevel Gear Set and Differential, Differential Lock, Bearing Preload, Planetary Final Drives |
| Power Take-Off (PTO) | 696-765 | Rear Electro-Hydraulic Control, Four-Speed Rear PTO, PTO Clutch, Front PTO Control, Front PTO |
| Brakes and Controls | 766-837 | Hydraulic Service Brakes, Parking Lock, Trailer Brake Hydraulic Control, Front Axle Brake, Brake Cooling |
| Hydraulic Systems | 838-951 | CCLS Hydraulics, Variable Displacement Pump, Priority Valves, Main Control Valve, Remote Control Valves, Three-Point Hitch Control Valve and Cylinders, Hydraulic Schemas |
| Steering | 952-975 | Hydraulic Control Components, Steering Cylinders, Autoguidance Steering |
| Cab Climate Control | 976-1033 | Ventilation, Air Conditioning Specifications, Refrigerant Handling, Compressor, Evaporator and Condenser, A/C Troubleshooting |
| Electrical System - Functional Schematics | 1034-1077 | ADIC, EEM3, FMGR/SGR, ECCU3 and EDC Functional Schematics, Suspended Front Axle, CAN Bus and ISO Bus Schematics |
| Electrical - Harnesses and Connectors | 1078-1595 | Fuse and Relay Boxes, Single and Dual Battery Electrical Schematic Frames, Harness Layouts, Connector Details, Earth Points, Diagnostic Connector |
| Electrical - Engine Controls, Battery and Starting | 1596-1639 | Cab Engine Controls, Engine Control System, Alternator, Battery, Cold Start Aid, Fuel Tank System, Fuel Injection System |
| Electrical - Engine Sensors and Electronic Modules | 1640-1679 | Intake and Exhaust Sensors, Cooling and Oil Sensors, Electronic Modules, Controller Fault Code Indexes, CAN Terminators |
| Electrical - Transmission Controls and Sensors | 1680-1727 | Cab Transmission Controls, Transmission Control System, Speed, Pressure, Temperature and Position Sensors |
| Electrical - Front Axle and PTO Controls | 1728-1757 | Front Axle Control System, Suspension Sensors, Rear PTO Control System, Front PTO Control System |
| Electrical - HVAC, Brake and Cab Controls | 1758-1787 | HVAC Controls and Control System, Cab Brake Controls, Service Brake and Trailer Brake Electrical Systems, Cab Controls |
| Electrical - Hydraulic, Steering and Hitch Controls | 1788-1827 | Remote Control Valve Electric Control, Hydraulic System Control, Steering Control System, Cab Hitch Controls, Rear and Front Hitch Electronic Control |
| Electrical - Autoguidance, Cab Harnesses and Instruments | 1828-1869 | Autopilot/Autoguidance, Cab Harnesses and Connectors, Warning Indicators, Alarms, Instrument Cluster |
| Fault Codes (DTC) | 1870-1901 | A71, ADIC, Aru, AUX, ECCU3, EEM3, FMGR and SGR Fault Codes |
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| Fuel tank capacity | 310 l (82 US gal) | p. 27 |
| Cooling system capacity | 25 l (6.6 US gal) | p. 27 |
| Engine oil capacity, including filter | 20 l (5.3 US gal) | p. 27 |
| Transmission / rear axle middle section capacity | approx. 60 l (15.9 US gal) | p. 27 |
| Hydraulic system / steering capacity | approx. 52 l | p. 27 |
| Front PTO oil capacity | approx. 3 l (0.79 US gal) | p. 27 |
| Engine compression ratio (620 series) | 18.5 : 1 | p. 36 |
| Cylinder head bolts and nuts tightening torque | 80 Nm + 90 ° + 90 ° | p. 32 |
| Connecting rod bolts (Torx E18) tightening torque | 40 Nm + 80 Nm + 90 ° | p. 32 |
| Flywheel mounting bolts tightening torque | 150 Nm | p. 32 |
| Engine oil pressure when idling (operating temperature) | min. 1.0 bar | p. 164 |
| Engine oil pressure at operating speed | 2.5 - 5.0 bar | p. 164 |
| CVT system pressure | 30 bar +/- 1 (435 psi +/- 14.5) | p. 178 |
| CVT hydrostat pressure limiter valve, + rotational direction | 430 bar (6235 psi) | p. 178 |
| Standard Pump PFC axial piston pump flow rate (140, 150 and 160 HP tractors) | max. 105 l/min at 2100 rpm (engine) | p. 878 |
| Mega Flow Pump PFC axial piston pump flow rate (175 and 195 HP tractors) | max. 130 l/min at 2100 min-1 (engine) | p. 878 |
| Rear PTO 540 - engine speed | 1870 rpm | p. 706 |
| Rear PTO 540E - engine speed | 1600 rpm | p. 706 |
| Front PTO output speed | 1000 RPM | p. 738 |
| Air conditioning refrigerant charge | 1600 g (56.44 oz) | p. 987 |
New Holland T7510–T7550 Series Common Problems This Manual Covers
Evaporator air not cold, gauges reading low pressure low and high pressure low
The A/C troubleshooting chart in the Cab Climate Control section points to a low refrigerant charge. Perform leak tests and repair the leak, then evacuate the system. Charge the system to the specified 1600 g (56.44 oz) and re-test it.
Manual Section: Air conditioning - Troubleshooting p. 1028Evaporator air not cold, low pressure high and high pressure low
The Cab Climate Control A/C troubleshooting chart gives the cause as an internal leak in the compressor. Discharge the system and replace the compressor. Then evacuate the system, charge it with refrigerant and re-test it before the tractor goes back to work.
Manual Section: Air conditioning - Troubleshooting p. 1028Insufficient cooling, low pressure low and high pressure high
The Cab Climate Control A/C troubleshooting chart points to a restriction in the liquid line. Discharge the system and replace the receiver/drier. Inspect all lines and tubing from the compressor outlet to the expansion valve and replace any that need it. Then evacuate, charge and re-test.
Manual Section: Air conditioning - Troubleshooting p. 1029Compressor cycles on and off too frequently, low pressure high and high pressure normal
The Cab Climate Control A/C troubleshooting chart traces this to a defective temperature control (thermostatic) switch. Stop the engine and shut off the A/C, then replace the temperature control switch. Re-test the system and check that the compressor now cycles correctly.
Manual Section: Air conditioning - Troubleshooting p. 1030Frequently Asked Questions
Which tractors does the New Holland T7510-T7550 service manual cover?
It covers the T7510, T7520, T7530, T7540 and T7550 with the Continuously Variable Transmission, under part number 47505533, dated February 2013. The electrical section is split into single-battery and dual-battery versions. Suspended front axle variants are covered too. The book does not print an overall serial range, so match it by model and CVT transmission. p. 29
What are the fluid capacities of the New Holland T7510, T7520, T7530, T7540 and T7550?
Fuel tank 310 l (82 US gal). Cooling system 25 l (6.6 US gal). Engine oil including filter 20 l (5.3 US gal). Transmission / rear axle middle section approx. 60 l (15.9 US gal). Hydraulic system / steering approx. 52 l. Front PTO approx. 3 l (0.79 US gal). p. 27
What is the hydraulic pump flow rate on the New Holland T7500 series?
Both pumps are PFC axial piston pumps. The Standard Pump gives max. 105 l/min at 2100 rpm (engine) and is standard in 140, 150 and 160 HP tractors. The Mega Flow Pump gives max. 130 l/min at 2100 min-1 (engine). It is standard on 175 and 195 HP tractors and optional on the 140, 150 and 160 HP tractors. p. 878
At what engine speed does the rear PTO run at 540 and 540E?
The rear PTO reaches 540 at 1870 rpm engine speed and 540E at 1600 rpm engine speed. Front PTO output speed is 1000 RPM. p. 706
Does the New Holland T7510-T7550 service manual include wiring diagrams, hydraulic schemas and fault codes?
Yes. It has electrical functional schematics for ADIC, EEM3, FMGR/SGR, ECCU3, EDC, the suspended front axle, CAN bus and ISO bus. It also has harness schematic frames for single and dual battery tractors, CVT hydraulic schemas and CCLS high-pressure schematics. Fault codes are indexed by controller, for example 54 Power supply undervoltage on A71 and 250 CAN Bus OFF on ADIC. p. 1872
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