Technical manual for the John Deere 840, 940, 1040 and 1140 European tractors, covering the 3-cylinder diesel engine, electrical, power train, hydraulics and chassis systems across all four horsepower ratings.
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This is the Technical Manual (TM-4353, dated 01JUN82) covering four closely related John Deere tractors built for the European market: the 840, 940, 1040 and 1140, printed in Germany though written in English. All four share the same basic engine architecture - a 3-cylinder, vertical in-line, valve-in-head, 4-cycle John Deere diesel with direct fuel injection through a distributor-type injection pump - but each model is tuned to a different output, climbing from 38 hp on the 840 up to 56 hp on the flagship 1140, and the manual's specifications tables list every model's figures side by side.
The engine section goes into real depth on the design details that matter for a rebuild: "wet" cylinder liners that form the cylinder bore and are individually replaceable, connecting rods with replaceable bronze bushings for the piston pins, aluminum-lined and tin-plated bearing inserts, and a camshaft that's driven by the timing gear train off the crankshaft and also actuates the fuel transfer pump. This level of engine detail reflects how these tractors were built to be serviced and rebuilt in the field rather than treated as disposable.
Beyond the shared engine, the manual covers the complete tractor: electrical system, transmission and power train, steering and brakes, hydraulics, and the chassis and sheet metal, organized in John Deere's standard section-and-group format. Because all four models share so much of their underlying design, a technician working on any one of them benefits from the full comparative specifications given for all four side by side. For anyone maintaining an 840, 940, 1040, or 1140, this manual has the complete factory procedures for the engine and every system behind it.
| Models | 840 (38 hp), 940 (44 hp), 1040 (50 hp), 1140 (56 hp) |
|---|---|
| Engine | John Deere 3-cylinder, vertical in-line, valve-in-head diesel |
| Manual Number | TM-4353 (01JUN82) |
| Fuel Injection | Distributor-type pump, direct injection |
| Printed | Germany |
| Language | English |
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