Description

Kubota M5640SU 2009 Workshop Manual

Every time I see a guy guessing on a head bolt torque for a Kubota diesel, I cringe. You’re either wasting time chasing a leak or risking a head gasket failure that’ll cost you a week of billable hours. This Kubota M5640SU 2009 Workshop Manual is what you use when you want to get the job done once. 371 pages, direct from Kubota, printed September 2009. No aftermarket shortcuts, no reprints that lose contrast on the wiring diagrams. This is the print that Kubota sent to its own dealer network.

Engine and E3B Diagnostics

The manual splits into four main sections: Information, Generalities, Operation, and Maintenance. The engine section covers the E3B block in detail. You get the RGE (EGR) system layout, turbocharger checks, and the full injection pump procedure. Page I-9 gives you the factory specs – displacement, compression ratio, injection timing. That page alone has saved me from ordering the wrong parts twice. If you need to understand how a manual transmission works before attacking the clutch, read about Manual Transmission fundamentals. But for this tractor, the factory procedure is on page I-9.

Torque Specs and Fluid Capacities

Torque is not a suggestion. The manual dedicates an entire subsection to tightening values: general bolts, studs, and hydraulic fittings. The section on hydraulic hose fittings and cap nuts is critical – I have seen guys strip those using a generic chart. This manual gives you the exact ft-lb for each fitting type. Lubricants and coolants are listed on the same page, so you don’t mix up 15W-40 and hydraulic oil. Keep a torque wrench in hand. Manual Transmission may share some principles, but the numbers here are Kubota-specific.

What the General Section Covers

General stuff? Not generic. This section starts with tractor identification – model name, serial number location, cylinder numbering. Then it dives into electrical precautions: wiring colors, fuse ratings, connector handling, multimeter use. If you have ever chased a short in a Kubota harness, you know how valuable the factory color codes are. The maintenance schedule runs from 50-hour checks all the way up to 3000-hour intervals. Special tools are listed for both engine and tractor – you can buy them or fabricate substitutes once you know the dimensions.

7 Systems Covered: From Clutch to Wiring

The manual covers seven major systems: engine, clutch, transmission (implied under driving clutch and PTO), hydraulics, electrical, steering, and brakes. Each system has its own troubleshooting flowchart, service specs, and disassembly sequence. The clutch section, for instance, separates the driving clutch from the PTO clutch – two different oil circuits, two different valve bodies. Mix them up and you are pulling the bell housing again. The manual spells out the oil flow and valve operation before you touch a wrench.

Use the Right Tools First

Page I-? Actually, the special tools section near page 10 lists engine-specific pullers and tractor-specific alignment tools. I always tell my guys: read that list before you start. Nothing worse than having the head off and needing a valve spring compressor that doesn’t fit the E3B. The manual gives you the Kubota part numbers, so you can cross-reference with aftermarket if you want – but the fit is guaranteed only with factory tools.

OEM vs Aftermarket: Why the Factory Print Wins

I have seen aftermarket manuals that combine five models into one book and leave out the M5640SU-specific wiring. This one is 100% OEM. The language is French because the original source came from Kubota’s Quebec distribution, but every spec is international. The torque values are in N·m and lbf·ft. If you read French, great. If not, the numbers are universal. I prefer factory prints because the diagrams are not scanned from a photocopy – they are original press quality. No blurry lines that make you guess which wire is gray with a red stripe.

Frequently Asked Questions

Does this manual cover the fuel injection pump rebuild?

Yes. The engine maintenance section includes injection pump removal, disassembly, and timing. Fuel system specs are on page I-9.

What torque values are listed for hydraulic fittings?

Hydraulic hose fittings, cap nuts, and adapters all have specific torque tables in the general torque section. Do not use a generic chart – use the factory values.

Is this manual available in English?

No. This is the original French-language edition published by Kubota for the Canadian market. However, the specifications and diagrams are language-independent. If you need English, look for the North American release.

Can I use this for the M5640DT-SU?

Yes. The manual covers both M5640SU and M5640DT-SU models. The difference is the front axle (4WD vs 2WD), but the engine, clutch, and PTO sections are identical. The identification section shows how to distinguish them.

If you are tired of scraping the internet for torque values that may or may not be right, this is the document that ends the guesswork. It’s a factory manual – not a summary, not a reprint. 371 pages of Kubota’s own data. Access the Factory Manual from AutoRepairManuals and keep it on your tablet or print it for the shop binder. Your torque wrench will thank you.

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