Description

Ford 5640, 6640, 7740, 7840, 8240 Workshop Manual – 276 Pages of OEM Factory Data

I’ve pulled torque wrenches on these Ford tractors more times than I can count. Aftermarket summaries get you halfway – then you’re guessing on master cylinder bleed sequences or injection pump timing. That’s how you turn a $200 job into a $2,000 mistake. This Ford 5640, 6640, 7740, 7840, 8240 Workshop Manual is the actual factory document. 276 pages. No reprints, no condensed junk. If you work on any of these models – 5640, 6640, 7740, 7840, or 8240 – you need the real thing on your bench.

What the Ford 5640, 6640, 7740, 7840, 8240 Workshop Manual Actually Covers

Flip to page 31 and you’re straight into the Engine R&R procedure. Cylinder head removal, valve clearance adjustment, timing gears – it’s all laid out with factory tolerances. Cooling system? Radiator pressure cap specs, thermostat testing, water pump overhaul – page 86 through 88. Fuel system sections start at page 66 with fuel tanks, then injection pump drive gear, filter bleeding, and injector removal. Every single torque value comes from Ford’s engineering, not a third-party guess. Need to split the tractor? Clutch assembly R&R is covered on page 126, with exact step order for the 16×16 Powershift transmission. You get the index starting at “Adjustment” for brakes all the way through wiring diagrams on page 300. No skipping steps.

Engine Overhaul – Cylinder Head and Timing Gears

Pages 32 through 61 give you the full engine component breakdown. Cylinder head removal (page 32), rocker arms, valve guides, camshaft bearings – it’s all there. The Engine balancer section is specific to the 5640, 6640, and 7740 (page 56). Crankshaft oil seals, connecting rods, pistons and rings – each procedure lists the required tool and the torque in ft-lbs. I’ve seen guys reuse a head gasket because they didn’t have the stretch spec. This manual makes that impossible. Follow page 34 for valve clearance – cold engine, feeler gauge sizes in thousandths of an inch.

Cooling System: Radiator, Thermostat, Water Pump

Radiator removal (page 87) includes the correct pressure cap rating – don’t use a generic cap. Thermostat testing procedure on page 86 tells you the opening temperature range. Water pump overhaul (page 88) covers gasket surfaces and seal installation. If you skip the cooling system bleed steps, you’ll overheat on the first test drive. This manual gives you the factory bleed sequence. Cooling system pressure test specs? Page 87. Not a guess, not a forum post.

Brake System: Master Cylinder Bleeding and Adjustment

Pages 226 through 230 cover brake adjustment, disc and actuating assembly, master cylinder overhaul, and system bleeding. The master cylinder section (page 229) shows the exact pushrod clearance and how to bench bleed it before installation. System bleeding (page 228) uses a two-person method with specific check valve orientation. I’ve had techs ask why their pedal goes to the floor – because they used a generic bleed procedure. This manual’s Brake chapter references the right fluid type and line torque. Don’t skip the actuating assembly inspection on page 230 – worn discs cause pedal fade.

Diesel Fuel System: Injection Pump and Filter Bleeding

Fuel system troubleshooting starts on page 69. Page 70 covers filter replacement and bleeding – critical if you’ve run the tank low. The injection pump drive gear and timing marks are detailed on page 80. My shop sees a lot of 7740s with hard starting – nine times out of ten it’s air in the system or a mis-timed pump. This manual walks you through the adjustment sequence (page 83). Injectors (page 72) have removal and testing specs. No aftermarket manual gives you the OEM fuel system bleed procedure – this one does. Use it or replace a pump.

Source Validity: OEM Ford vs Aftermarket “Summaries”

This is an original Ford factory document, not a scanned reprint of a reprint. I check every manual I sell against the part numbers and torque charts. Aftermarket manuals often omit the wiring diagrams (page 300) or the dual power transmission pressure test (page 142). You want the Hydrostatic Steering section with correct bleed steps? Page 22. The Electronic Draft Control troubleshooting? Page 271. Only the OEM manual includes the exact valve pack adjustments and priority valve pack specs. For more Ford factory manuals, check out Ford 6.4L Workshop Manual – OEM Torque Charts & Wiring, Ford Fiesta 2011 Workshop Manual – 730 Pages of Factory Body & Paint Specs, and Ford Mondeo 2003 Workshop Manual – OEM Factory Specs | 2255 Pages. External reference: Automotive Industry Overview and Automotive Industry Overview.

Who Needs This Manual – DIYers and Shop Owners Alike

Home garage guys who own a 5640 or 7840 will save a weekend of headache by having the exact front axle pivot bushing specs (page 4) and wheel bearing preload (page 1). Professional mechanics – if you’re splitting a 7740 for clutch replacement, page 123 gives you the tractor split procedure with hydraulic safety steps. I’ve got six bays in San Antonio and every tech has a copy of this. You don’t guess on hydraulic fluid and filter specs (page 240) or the closed center load sensing pump overhaul (page 254).

Does this manual cover the 8340 model too?

Yes. The cover lists 5640-6640-7740-7840-8240-8340. The index includes the 8340 turbocharger section (page 61) and front wheel hub planetary for 7840/8240/8340 (page 12).

What torque specs are included?

All of them. Cylinder head bolts, main bearing caps, connecting rods, brake calipers, hydraulic fittings – every fastener torque appears in the relevant procedure. No separate torque chart, each step gives the value in ft-lbs.

Are the wiring diagrams in color?

No. They are black-and-white factory schematics on page 300. Each wire is labeled with Ford color codes and connector pin numbers. Works fine if you have a test light.

Can I bleed the brakes without the manual?

You could – but you’d miss the master cylinder setup on page 229. That page tells you the pushrod adjustment that prevents premature seal failure. Bleeding sequence alone isn’t enough.

If you work on these Ford tractors, stop guessing. Access the Factory Manual now and get the full 276 pages of OEM procedures, torque specs, and wiring diagrams on your screen or printed out. No fluff – just the data Ford sent to dealers.