- Rigid chassis
- WhichTractor size: High-power
- No lab test on file
- 1978–1982
WhichTractor size, not the maker’s category
Derived by WhichTractor from a sourced three-point linkage. How we decide what a machine is
John Deere 4840 specs: hp, weight, years
John Deere 6.466 AT six-cylinder diesel. The manufacturer claimed 178.6 horsepower. No laboratory has tested one, so there is no measured figure at the shaft.
Engine power, claimed · gross or net not stated
178.6 hp
133.2 kW as stated by the source
No lab test on file
Claimed · standard not stated by the source
Source · Traktorenlexikon, “John Deere 4840”, claimed
This is the maker’s own figure, measured at the engine. Power at the PTO is lower — by how much, for this machine, nobody has measured.
- Weight
- 14,899 lb
- 3-point lift
- 8,294 lb
- Hyd. flow
- 23.0 gpm
- Top speed
- 18.6 mph
John Deere 4840 specs: key facts
The John Deere 4840 was built from 1978 to 1982.
The John Deere 4840 has a claimed engine power (gross or net not stated) of 133.2 kW (178.6 hp); it has no measured PTO figure.
The John Deere 4840 was offered in two-wheel-drive and four-wheel-drive versions.
The John Deere 4840 has a John Deere 6.466 AT engine, a 6-cylinder 7.64 L diesel unit.
The John Deere 4840 weighs 6,758 kg (14,899 lb) unladen.
The John Deere 4840 has an independent rear PTO running at 1000 rpm.
The three-point hitch of the John Deere 4840 lifts 3,762 kg (8,294 lb) at the lower-link ends.
The hydraulic pump of the John Deere 4840 delivers 87.1 L/min (23.0 gpm).
Source · Traktorenlexikon, “John Deere 4840”
How does the 4840 compare with its class?
- Limitation:
Eight forward gears is low for its class — 56% below the median of 18 across the 122 machines within 10% of its power that hold this figure.
- Limitation:
The power figure is a manufacturer claim, not a measurement. No laboratory test report exists for this machine. Of the 135 tractors within 10% of its power, 12% carry one.
Derived by WhichTractor from 135 comparable records. How we work this out
How much horsepower does a 4840 have?
The only figure for the 4840 is 178.6 hp (133.2 kW) of claimed engine power, gross or net not stated, no test standard stated — not power at the shaft.
Source · Traktorenlexikon, “John Deere 4840”
What engine is in a 4840?
A 4840 has a John Deere 6.466 AT, a 6-cylinder 7.64 L diesel engine.
| Make & model | John Deere 6.466 AT |
|---|---|
| Cylinders | 6, liquid-cooled |
| Displacement | 466.2 ci · 7.64 L |
| Electrical system | 12 V |
Source · Traktorenlexikon, “John Deere 4840”
How much will a 4840 lift, and what is its hydraulic flow?
A 4840 lifts 8,294 lb (3,762 kg) at the lower-link ends of its Category 3 three-point hitch.
| System | Closed centre |
|---|---|
| Pump flow | 23.0 gpm · 87.1 L/min |
| Pressure | 3,481 psi · 240 bar |
| Hitch category | Category 3 |
| Lift at ends | 8,294 lb · 3,762 kg |
| Rear PTO | Independent, engine-driven, 1000 rpm |
| PTO shaft | 1 3/8"- 21 teilig (Form-2) |
Source · Traktorenlexikon, “John Deere 4840”
What transmission does a 4840 have?
Transmission specifications for the 4840 are below.
| Clutch | Hydraulically operated oil-cooled double-plate clutch |
|---|---|
| Steering | Hydrostatic steering consisting of gear pump, control valve and steering motor |
| Top speed | 18.6 mph · 30 km/h |
Source · Traktorenlexikon, “John Deere 4840”
How much does a 4840 weigh?
A 4840 weighs 14,899 lb (6,758 kg) unladen.
| Unladen weight | 14,899 lb · 6,758 kg |
|---|---|
| Wheelbase | 118.5 in · 3,010 mm |
| Length | 176.8 in · 4,490 mm |
| Width | 95.7 in · 2,430 mm |
| Height | 116.9 in · 2,970 mm |
| Front track | 57.9–100.0 in · 1,470–2,540 mm |
| Rear track | 59.8–131.5 in · 1,520–3,340 mm |
| Turning radius, braked | 13.5 ft · 4.10 m |
Source · Traktorenlexikon, “John Deere 4840”
What oil does a 4840 take, and how much?
A 4840 engine takes 20.0 qt (18.9 L). Single source, not independently verified — always confirm against the operator’s manual for your machine.
| System | Capacity |
|---|---|
| Engine oil | 20.0 qt · 18.9 LSource: Traktorenlexikon, “John Deere 4840” · single source, not independently verified |
| Transmission & hydraulic | 66.0 qt · 62.5 LSource: Traktorenlexikon, “John Deere 4840” · single source, not independently verified |
| Cooling system | 40.0 qt · 37.9 LSource: Traktorenlexikon, “John Deere 4840” · single source, not independently verified |
Always confirm against the operator’s manual for your machine before service.
Which tractors compare with a 4840?
Within 10% of its 178.6 hp of claimed engine power, the same type, and first built within 15 years of it.
- Fiat 1880 (DT)177.7 hp engine, claimed · 1979–1984Side by side with the 4840 →
- Fiat 180-90 (DT)177.7 hp engine, claimed · 1984–1994Side by side with the 4840 →
- Massey Ferguson 3680177.7 hp engine, claimed · 1989–1990Side by side with the 4840 →
- WHITE 2-180179.6 hp engine, claimed · 1978–1982Side by side with the 4840 →
- SOMECA 1880 (TD)177.6 hp engine, claimed · 1979–1983Side by side with the 4840 →
- Case-IH Magnum 7120177.6 hp engine, claimed · 1988–1993Side by side with the 4840 →
Common questions about the John Deere 4840
Is a 4840 two-wheel drive or four-wheel drive?
The John Deere 4840 was offered in two-wheel-drive and four-wheel-drive versions.
What PTO does a 4840 have?
A 4840 has a independent 1000 rpm rear PTO on a 1 3/8"- 21 teilig (Form-2) shaft.
Sources and how this page was built
Compiled from Traktorenlexikon, “John Deere 4840”.
Sources
Facts taken from these documents, units converted. Numbers beside a figure refer to this list. Licences and attribution
- Traktorenlexikon: John Deere 4840 — CC BY-SA 4.0, WIKIBOOKS-TL-105695 · revision 868546. Wikibooks contributors (Traktorenlexikon). Original document