Description

Deutz Fahr 5650 H, 5660 HTS, 5670 H, 5670 HTS, 5680 H Workshop Manual

If you are turning wrenches on a Deutz Fahr 5650 H, 5660 HTS, 5670 H, 5670 HTS, or 5680 H combine, you already know that aftermarket data gets you into trouble. I have seen guys pull a head bolt to factory spec from a third-party CD and snap it. That does not happen with the factory Workshop Manual. 640 pages of OEM content, straight from SAME DEUTZ-FAHR DEUTSCHLAND GmbH. Printed in 2006, part number 307.1133.3.6. No reprints, no copied scans – this is the actual manual you would get if you walked into a dealer parts counter in Lauingen.

Engine Assembly and Power Take-Off

Section A covers the engine: assembly, parts, controls, and power take-off. You get exploded views of the block, head, and injection system. Torque values are listed in Nm – keep your conversion chart handy because the manual does not give foot-pounds. The PTO clutch adjustment procedure alone is worth the price if you have ever had a combine that would not disengage. Page i4 starts with safety instructions – read them before you drop the oil pan. Hydraulic fluid at 2500 psi does not care how many years you have been turning bolts.

What About the Hydraulic Circuit?

Section D is the hydraulic system. Pumps, valves, cylinders, and lines. If you have a 5670 HTS that drops the header when you hit a bump, the troubleshooting steps in this section will save you replacing parts you did not need. The manual includes flow diagrams and pressure test points. Use a calibrated gauge – guesswork costs money. The hydraulic system on these combines runs the drive and the feeder. One wrong O-ring can cost you a day in the field. Get the right part numbers from the manual.

640 Pages of Factory Diagnostics

This is not a condensed guide. 640 pages means every system gets full treatment: front axle and steering (section B), belt drive clutches and greasing equipment (section C), feed passage (section E), cabin and driver’s stand (section G), electrical system (section H), and air conditioning. The electrical section includes full wiring diagrams with color codes. I have chased more ground faults on combines than I can count – having the factory diagram cuts diagnosis time in half. The manual also covers the Manual Transmission if your unit has one – the shift linkage adjustment is in section B.

Check the Safety Instructions First

Page i4 has the safety section – general and specific. Lockout procedures, high-pressure fluid hazards, rotating parts. Do not skip it. I have seen a technician lose a finger because he bypassed a safety switch. The manual tells you exactly which pins to install before working on the header lift cylinders. Follow it. The Manual Transmission on earlier models has a lockout that prevents accidental engagement – the wiring diagram is in section H. That is the kind of detail aftermarket copies leave out.

Electrical System: Factory Wiring Procedures

Section H covers the full electrical system. Starting and charging circuits, sensors, ECU, and cabling. If you have a 5680 H that cranks but will not start, the diagnostic tree on page 4 (summary page) directs you to the fuel shutoff solenoid test. The manual uses the OEM connector pinouts – no generic colors. This is where aftermarket manuals fail you. They show a generic 12V system and call it good. This manual shows the exact Deutz Fahr harness with Deutsch connectors. You will also find the air conditioning wiring in the same section – compressor clutch, thermistor, and pressure switch circuits.

Related Manuals

• Deutz Fahr 5650 H, 5660 HTS, 5680 H 2006 Operators Manual
• SAME DEUTZ FAHR 26.6 30.7 Workshop Manual
• Deutz Fahr Agrovector 26.6 30.7 Workshop Manual

Does this manual cover the 5690 HTS?

Yes, the summary lists 5690 HTS alongside the other models. Section A through H apply to all five models unless noted otherwise.

I need torque specs for the rear axle bolts. Where do I find them?

Section B – Front axle, gearbox, Steering axle. Torque values are given in the assembly diagrams. They are listed in Nm. You will need to convert to ft-lb if your torque wrench reads imperial. The manual uses metric fasteners throughout – M14 bolts at 180 Nm, for example. Do not guess. Over-torqueing an axle housing bolt cracks the casting. I have seen it. Use the spec from the book.

You need factory data to keep these combines running without comebacks. Whether you are a farm shop operator or a mobile tech, having the actual OEM workshop manual means you are working from the same information the dealer uses. Stop relying on photocopied pages and vague internet forum advice. Access the Factory Manual and get the correct procedures, torque values, and wiring diagrams for your Deutz Fahr 5650 H, 5660 HTS, 5670 H, 5670 HTS, or 5680 H. Your wallet and your knuckles will thank you.