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John Deere 4840 Maintenance
The
John Deere 4840 is a two-wheel drive row-crop tractor from Iron Horses series.
This model was manufactured between 1978 and 1982. The JD 4840 driveline
components: John Deere 6466 four-stroke six-cylinder direct injection
turbocharged intercooled diesel engine and 8x4 full powershift transmission.
A 466 cubic inches (7.6 L) engine has a cylinder bore of 4.56" (116 mm),
piston stroke of 4.75" (121 mm), and rated power of 200 hp (148.1 kW).
The maximum travel speed (forward and reverse): 18.6 mph (29.9 km/h) /
6.4 mph (10.3 km/h).
The closed center hydraulic system used a pump with a flow of 23 gpm
(87.1 lpm) gpm. The hydraulic pressure is 157 bar (2275 psi). The John
Deere 4840 was equipped with a power steering system, differential
hydraulic wet disc brakes, 11.00x16 or 16.5Lx16.1 front tires, and
18.4x38 or 18.4x42 rear tires. The wheelbase is 118.5 inches (3000 mm).
| Engine oil capacity, gal (L) |
5.3 (20.0) |
| Engine coolant capacity, gal (L) |
10.0 (38.0) |
| Hydraulic/transmission system capacity, gal (L) |
16.5 (62.5) |
| Fuel tank capacity, gal (L) |
103.0 (390.0) |
| Recommended Oil and Fluid |
| Engine oil type |
Torq-Gard Supreme, SAE 15W-30, 15W-40, 5W-20. API Service category CD, SC |
| Engine coolant type |
Cool-Gard Premix Coolant |
| Hydraulic/Transmission fluid type |
Hy-Gard, Low Viscosity Hy-Gard, JDM J20A, Quatrol |
| Check hydraulic/transmission fluid level |
Every 100 hours |
| Lubricate axle hub bearings |
Every 100 hours |
| Change engine oil |
Every 100 hours |
| Replace engine oil filter |
Every 200 hours |
| Inspect and adjust alternator belt |
Every 200 hours |
| Clean cab air filters |
Every 200 hours |
| Replace engine coolant filter |
Every 200 hours |
| Clean battery and check electrolyte level |
Every 200 hours |
| Change engine fuel filter |
Every 600 hours |
| Check and service engine air filters |
Every 600 hours |
| Check injection timing |
Every 600 hours |
| Replace hydraulic/transmission oil filter |
Every 600 hours |
| Check and adjust engine idling |
Every 600 hours |
| Check and adjust valve clearance |
Every 600 hours |
| Change hydraulic/transmission fluid |
Every 1200 hours |
| Replace primary engine air filter |
Every 1200 hours |
| Replace secondary engine air filter |
Every 1200 hours |
| Replace cab air filters |
Every 1200 hours |
| Clean and adjust wheel bearings |
Every 1200 hours |
| Clean hydraulic pump valve filter |
Every 1200 hours |
| Flush cooling system and add new coolant |
Every 2000 hours |
| Engine oil filter part number |
AR43634, DZ101880 |
| Engine fuel filter part number |
AR50041 |
| Primary engine air filter part number |
AR80652 |
| Secondary engine air filter part number |
AR80653 |
| Cab recirculation air filter part number |
RE12793, RE67830 |
| Cab fresh air filter part number |
R65450 |
| Hydraulic/transmission oil filter part number |
AR94510 |
| Hydraulic filter element part number |
R27173 |
| Engine coolant filter part number |
RE11992 |
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| Farm Tractors Technical Specifications |
