Part of the Yanmar Repair Manuals.
Yanmar's EG907PS technical manual (05/2008 edition, 443 pages) strips the EG907 diesel tractor down on paper, system by system: the 4TNV98T diesel, the power reverser transmission with its high/low shift, the independent PTO in the rear axle, power steering, and the cab air conditioner.
When the shuttle drags at dawn and the dealer is an hour away, this is the second set of eyes you do not have. Each section pairs construction and function with disassembly, reassembly, inspection values, and problem diagnosis, and the electrical chapter backs it all up with circuit diagrams for the charge, alarm, security, and cabin systems.
It arrives as a bookmarked PDF, about 100 bookmarks deep, so you can drop straight from the contents into the rear axle PTO pages and be back in the field before the weather turns.
What's Inside This Yanmar EG907 Manual
| System | Pages | Key Topics |
|---|---|---|
| Safety | 3 | - |
| Introduction | 13-38 | To the Owner, Important Warranty Information, Declaration of Conformity, Maintenance, Supply Period for Maintenance Parts, Improvements, Note, Symbol Indication |
| Periodical Inspection | 39-61 | Check Intervals, List of Oils, Greases and Antifreeze, List of Lubricants and Water Capacities, Equivalent Oil to Transmission Fluid Tf500, Maintenance Mode |
| Rough Disassembly of Components | 62-98 | How to Open/Close the Frontgrill and the Side Covers, Cabin Separation, Tilt Angle of the Tank, Propeller Shaft Separation, Separation at the Clutchhousing Section |
| Engine | 99-125 | Construction and Functions, Removing and Reinstallingthe Fuel Injection Pump |
| High-Efficiency Diesel Engine | 126-187 | Construction and Functions, Control Outline, Precautions for Handling, Replacement Procedure Forthe Engine Governor Assembly, Problem Diagnosis |
| Transmission | 188-231 | Construction and Functions, Damper Disc, Main Clutch and Powerreverser, High/Low Shift, Dual Speed Turn/On-The-Go, Disassembly and Reassembly, Inspection and Adjustment |
| Front Axle | 232-237 | Construction and Functions, Disassembly and Reassembly |
| Rear Axle | 238-255 | Construction and Functions, Independent PTO, Disassembly and Reassembly |
| Power Steering | 256-275 | Construction and Functions, Removing or Reinstalling Thepower Steering Cylinder, Disassembling Andreassembling the Powersteering Cylinder |
| Universal Flat Operation | 276-327 | Inspection and Adjustment, Electric Control Components, Hydraulic Controlcomponents, Control Mode, Control Outline, Problem Diagnosis, Sensor Adjustment Procedure |
| Electric Equipment | 328-373 | CAN Meter, Cell Motor Circuit Diagram\\udbc0\\udc79Charge Circuit Diagram\\udbc0\\udc79 Fuelcircuit Diagram, Alarm Circuit Diagram, Security Circuit Diagram, Cabin Circuit Diagram |
| Air Conditioner | 374-427 | the Air Conditioner, Operation and Handling, Operation Andcontrol, Checking and Maintenance, Refrigerant Filling, Troubleshooting |
| Appendixes | 428-442 | General Hydraulic Circuit Diagram, General Circuit Diagram of the Electrical Components, Wire Harness, Lead Line |
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| Fuel filter replacement interval | Every 300 operating hours or 6 months, whichever is earlier | p. 101 |
| Starter motor part number | 129900-77010 | p. 137 |
| PTO valve solenoid resistance | Approx. 7.6Ω | p. 250 |
| Hydraulic filter micron size | 35 micron | p. 429 |
| Engine Oil Capacity | 12.0 L | p. 42 |
| General Screw Tightening Torque (M12) | 44.10 - 58.80 N-m | p. 28 |
| Brake Pedal Play | 35-40 mm | p. 59 |
| Fan Belt Deflection | 5-7mm | p. 56 |
| Wheel Mounting Bolt Torque (Front/Rear) | 254-294 N-m | p. 61 |
| Power Steering Tie Rod Torque | 206-235 N-m | p. 262 |
Yanmar EG907 Common Problems This Manual Covers
Cranks but will not start
A tractor that spins over on a cold morning without firing usually comes down to fuel delivery. The Engine section covers the fuel system, including removing and reinstalling the fuel injection pump, and sets the fuel filter replacement interval at every 300 operating hours or 6 months.
Manual Section: Engine p. 99Overheating under load
Running hot while pulling often starts with a slipping fan belt or skipped cooling checks. The Periodical Inspection section sets fan belt deflection at 5 to 7 mm and lists check intervals, coolants, and fluid capacities so the cooling system gets serviced on schedule.
Manual Section: Periodical Inspection p. 39PTO shaft will not engage
When the PTO stays dead with an implement hitched and the clock ticking, the Rear Axle section covers the independent PTO with full disassembly and reassembly, plus an electrical check of the PTO valve solenoid (about 7.6 ohms).
Manual Section: Rear Axle p. 238Shuttle drags or slips
A power reverser that creeps in neutral or slips under load points at the clutch pack. The Transmission section covers the damper disc, main clutch and power reverser, high/low shift, and dual speed turn, with inspection and adjustment procedures for setting it right.
Manual Section: Transmission p. 188Hitch or hydraulics unresponsive
Slow or dead hydraulic response on this tractor runs through both electric and hydraulic control components. The Universal Flat Operation section walks the problem diagnosis, inspection and adjustment, and the sensor adjustment procedure step by step.
Manual Section: Universal Flat Operation p. 276Electrical gremlins after storage
A tractor that sat through the off season often wakes up with charging trouble or phantom alarms and nobody around to ask. The Electric Equipment section carries the cell motor, charge, fuel, alarm, security, and cabin circuit diagrams for tracing faults wire by wire.
Manual Section: Electric Equipment p. 328Cab air conditioner blows warm
Warm air in the cab in the middle of summer field work usually means low refrigerant or a control fault. The Air Conditioner section covers operation, checking and maintenance, refrigerant filling, troubleshooting, and its own parts list.
Manual Section: Air Conditioner p. 374Frequently Asked Questions
Which tractor does this manual cover?
It is the Yanmar technical manual, publication EG907PS 05/2008 edition, for the EG907 diesel tractor with the 4TNV98T engine. Its 443 pages span engine, transmission, front and rear axles, power steering, hydraulic and electric controls, electrical equipment, and the cab air conditioner.
Does it include wiring diagrams?
Yes. The Electric Equipment section carries the cell motor, charge, fuel, alarm, security, and cabin circuit diagrams, and the Appendixes add a general circuit diagram of the electrical components plus wire harness drawings. p. 328
Does it list service specs and capacities?
Yes. The Periodical Inspection section gives check intervals, oils, greases, and capacities (engine oil is 12.0 L), fan belt deflection of 5 to 7 mm, and brake pedal play of 35 to 40 mm, and the manual includes a screw tightening torque table. p. 39
Does it cover the cab air conditioner?
Yes. The Air Conditioner section runs from operation and construction through checking and maintenance, refrigerant filling, and troubleshooting, and closes with a parts list, so you can chase a warm cab without a second book. p. 374
How will I receive this Yanmar EG907 Technical Manual?
Instant PDF download (34 MB). You get the full 443-page searchable Technical Manual immediately after payment. Open it on your laptop, tablet, or phone right in the shop.
Can I print specific sections of this Yanmar EG907 Technical Manual?
Yes. The PDF has no DRM restrictions, so print any page or section you need for your shop. Works with any standard printer.
Are there wiring harness diagrams in this Yanmar EG907 manual?
A wiring diagram for the Yanmar EG907 electrical system is included.
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