This is the factory workshop manual for the Fendt 700 and 800 Vario COM III range: 712, 714, 716, 718, 818 and 820, built 2007 to 2010, all running the Deutz TCD 2012 L06-4V six cylinder common rail engine with external exhaust gas recirculation. It covers the whole machine group by group: Vario transmission and clutch actuation, engine, front axle and suspension, cab, EPC power lift, air compressor and brake fittings, hydraulics at 200 bar working pressure, and the full electrics section with wiring diagrams and test procedures. You also get the COM III fault code table, calibration procedures, component locations and the special tools list. If you work on these tractors with FENDIAS or SERDIA, this is the book the dealer techs use.
What's Inside This Fendt 712 / 714 / 716 / 718 / 818 / 820 Vario COM III Manual
| System | Pages | Key Topics |
|---|---|---|
| Tractor (Group 0000) | 6-262 | Technical Specifications per Model, COM III Fault-Code Table, Component Location, Calibration Procedures, Safety Instructions |
| Transmission (Group 1000) | 263-504 | Transmission Control Unit, Differential, Axle Drives, Hand Brake, Brake System, Vario Transmission Unit, Clutch Actuation, Cardan-Shaft Brake, Front PTO, Live PTO, Front-Wheel Drive, Hydrodamp, Actuation Valves |
| Engine (Group 2000) | 505-587 | Cylinder Head, Fuel System, Lubrication, Exhaust System, Injectors |
| Front Axle (Group 3000) | 588-601 | Axle Housing, Suspension |
| Vehicle Body (Group 5000) | 602-607 | Vehicle Body, Body Construction |
| Air-Conditioning (Group 5500) | 608-613 | Air-Conditioning General System, Electric Cables |
| Cab (Group 8100) | 614-620 | Cab Repair |
| Power Lift (Group 8600) | 621-681 | Electrohydraulic Control EPC, Electrohydraulic Remote Control, Controlled Power Lift |
| Air Compressor (Group 8800) | 682-721 | Air Compressor General System, Brake Fittings |
| Electrics (Group 9000) | 722-1032 | Electrics General System, Documents and Diagrams, Testing |
| Front Power Lift (Group 9200) | 1033-1049 | Front Power Lift General System |
| Hydraulic Pump Assembly (Group 9400) | 1050-1059 | Transmission Pump, Steering Pump |
| Hydraulics (Group 9600) | 1060-1136 | Hydraulics General System, Connections, Valve Assemblies, External Pressure Supply, Valve Supplement |
| Electronics (Group 9700) | 1137-1180 | Electronics General System, Bus System, Control Unit |
| Service (Group 9900) | 1181-1215 | Special Tools, FENDIAS |
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| Fendt 712 Vario COM III | ||
| Rated power (ECE R24, 2100 rpm) | 85/115 kW/hp | p. 22 |
| Maximum torque (ECE R24) | 571 Nm | p. 22 |
| Kerb weight | 6605 kg | p. 22 |
| Permissible gross weight (mechanical hand brake) | 11000 kg | p. 22 |
| Wheelbase | 2700 mm | p. 22 |
| Rear lift capacity at coupling point | 83.4 kN | p. 22 |
| Fendt 714 Vario COM III | ||
| Rated power (ECE R24, 2100 rpm) | 96/130 kW/hp | p. 22 |
| Maximum torque (ECE R24) | 640 Nm | p. 22 |
| Kerb weight | 6605 kg | p. 22 |
| Permissible gross weight (mechanical hand brake) | 11000 kg | p. 22 |
| Wheelbase | 2700 mm | p. 22 |
| Rear lift capacity at coupling point | 83.4 kN | p. 22 |
| Fendt 716 Vario COM III | ||
| Rated power (ECE R24, 2100 rpm) | 110/150 kW/hp | p. 24 |
| Maximum torque (ECE R24) | 724 Nm | p. 24 |
| Kerb weight | 6605 kg | p. 24 |
| Permissible gross weight (mechanical hand brake) | 11000 kg | p. 24 |
| Wheelbase | 2700 mm | p. 24 |
| Rear lift capacity at coupling point | 83.4 kN | p. 24 |
| Fendt 718 Vario COM III | ||
| Rated power (ECE R24, 2100 rpm) | 121/165 kW/hp | p. 24 |
| Maximum torque (ECE R24) | 780 Nm | p. 24 |
| Kerb weight | 6985 kg | p. 24 |
| Permissible gross weight (mechanical hand brake) | 12500 kg | p. 24 |
| Wheelbase | 2720 mm | p. 24 |
| Rear lift capacity at coupling point | 90.8 kN | p. 24 |
| Fendt 818 Vario COM III | ||
| Rated power (ECE R24, 2100 rpm) | 125/170 kW/hp | p. 26 |
| Maximum torque (ECE R24) | 804 Nm | p. 26 |
| Permissible gross weight (mechanical hand brake) | 12500 kg | p. 26 |
| Wheelbase | 2720 mm | p. 26 |
| Rear lift capacity at coupling point | 90.8 kN | p. 26 |
| Fendt 820 Vario COM III | ||
| Rated power (ECE R24, 2100 rpm) | 140/190 kW/hp | p. 26 |
| Maximum torque (ECE R24) | 895 Nm | p. 26 |
| Permissible gross weight (mechanical hand brake) | 12500 kg | p. 26 |
| Wheelbase | 2720 mm | p. 26 |
| Rear lift capacity at coupling point | 90.8 kN | p. 26 |
| All models | ||
| Engine | Deutz TCD 2012 L06-4V, 6 cylinders, water-cooled | p. 22 |
| Fuel system | Common rail with external exhaust gas recirculation | p. 22 |
| Bore / stroke | 101 / 126 mm | p. 22 |
| Effective displacement | 6057 cm3 | p. 22 |
| Rated speed | 2100 rpm | p. 22 |
| Idle speed | 800 +50 rpm | p. 22 |
| No-load engine speed | 2205 +/-30 rpm | p. 22 |
| Diesel filling volume | 340 Litres | p. 22 |
| Hydraulic working pressure | 200 bar | p. 23 |
| Hydraulic pump delivery | 110 l/min (154 l/min optional) | p. 23 |
| Available hydraulic oil at max. capacity | 45 Litres | p. 23 |
| Front suspension accumulator pressure | 200 bar, retained with the engine off | p. 13 |
| Rear power lift | Three-point Cat. 2/3, EPC control | p. 23 |
| Front power lift (optional) | Three-point Cat. 2, 44.4 kN, implement weight up to 3000 kg | p. 23 |
| Rear PTO | 540 / 540E / 1000, 1 3/8 inch 6-spline | p. 26 |
| Rear PTO max. permissible torque | 2200 Nm (540) / 1650 Nm (540E) / 1200 Nm (1000) | p. 26 |
| Front PTO speed | 1082 rpm (1000 version) / 580 rpm (540 version) | p. 23 |
| Front PTO max. permissible torque | 908 Nm (1000) / 1695 Nm (540) | p. 23 |
| PTO peak-torque seize protection | 4000 Nm | p. 25 |
| Transmission | Vario continuously variable, 50 km/h | p. 23 |
| Speed range I forward | 0.02 - 28 km/h | p. 23 |
| Speed range I reverse | 0.02 - 17 km/h | p. 23 |
| Speed range II forward | 0.02 - 50 km/h | p. 23 |
| Speed range II reverse | 0.02 - 40 km/h | p. 23 |
| Max. permissible front axle load | 5400 kg | p. 22 |
| Minimum turning circle | 5.5 m (712/714/716) / 5.6 m (718/818/820) | p. 22 |
Fendt 712 / 714 / 716 / 718 / 818 / 820 Vario COM III Common Problems This Manual Covers
Engine related fault code stored and the tractor side display only gives a dotted number
Look the code up in the COM III fault code table in Group 0000. The row gives you the wiring diagram sheet in the Group 9000 documents plus the corresponding Deutz SERDIA code, so you test the circuit on the right diagram and then confirm on the engine side with SERDIA.
Manual Section: Tractor (Group 0000), COM III fault-code table, with Electrics (Group 9000) diagrams p. 40Front axle suspension circuit needs opening but the accumulator reads 200 bar with the engine off
That pressure is retained by design through unlockable check valves, and neither the lock/lower command nor external power on Y013/Y014 will release it. The manual prints this warning in the Tractor group safety instructions, ahead of the front axle work - follow the relief procedure there before cracking any fitting, otherwise stored 200 bar comes out at you.
Manual Section: Tractor (Group 0000), safety instructions / Front axle (Group 3000), suspension p. 13Fault memory was wiped before diagnosis and the intermittent fault is now untraceable
The manual explicitly warns against deleting codes with the D, B and C keys before the fault is repaired. Wait for the fault to reset, read the stored code, then use the Group 0000 table to trace it through the wiring diagram sheet and SERDIA reference before clearing anything.
Manual Section: Tractor (Group 0000), COM III fault-code table and safety instructions p. 35EPC rear power lift not responding correctly after control unit or linkage work
The electrohydraulic control EPC section covers the electrohydraulic remote control and controlled power lift step by step, and Group 0000 supplies the calibration procedures with their 4 digit codes so the Cat. 2/3 three point linkage and its 90.8 or 83.4 kN lift work is set up properly after repair.
Manual Section: Power lift (Group 8600), electrohydraulic control EPCFrequently Asked Questions
How do I clear the fault memory on a 712/714/716 Vario COM III, and can I just delete the codes?
The manual covers the delete procedure using the D, B and C keys, but it also carries an explicit warning: do not wipe the fault memory before the fault is actually fixed. Delete first and you lose the stored evidence that tells you which circuit was acting up. Diagnose from the COM III fault code table in Group 0000, repair, then clear. p. 35
I have a COM III fault code. How do I get from the number to the actual component?
Fendt codes on these machines are dotted, like 1.2.04, not the E045 style you see quoted online. Each row in the fault code table hands you two things: the wiring diagram sheet number in the Group 9000 documents, and the matching Deutz SERDIA code for engine side faults. So one code walks you from symptom to the right diagram to the engine side diagnostic without guessing. p. 40
The front suspension still shows 200 bar with the engine off. Is something stuck?
No, that is by design and the manual says so. Unlockable check valves hold the accumulator pressure at 200 bar with the engine stopped. The lock and lower commands do nothing to release it, and even feeding external power to solenoids Y013 and Y014 will not bleed it off. You must relieve the pressure manually per the procedure in the Tractor group safety instructions before opening the circuit, or you will get hurt. p. 13
Is the 718 Vario a 700 series or an 800 series machine when it comes to specs?
Treat the 718 as an 800 frame tractor. It shares the 12500 kg permissible gross weight, the 2720 mm wheelbase and the 90.8 kN rear lift capacity with the 818 and 820, not with the 716. Kerb weight is 6985 kg against 6605 kg for the 712/714/716. Ordering parts or checking load limits off 716 figures will steer you wrong. p. 24
Does the manual cover calibration after repairs, and what diagnostics does it expect?
Yes. Group 0000 carries the calibration procedures with their 4 digit calibration codes, and Group 9900 covers FENDIAS, the tractor side diagnostic system. Engine side work on the Deutz common rail runs through SERDIA, and the fault code table cross references the SERDIA codes so the two systems line up. p. 55
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