John Deere 790

John Deere 790The John Deere 790 is a 2WD or 4WD compact utility tractor manufactured by the Yanmar for John Deere from 2000 to 2007. The John Deere 790 is equipped with 1.5 L three-cylinder diesel engine and sliding gear transmission with 8 forward and 2 reverse gears.

The John Deere 790 utility tractor is equipped with manual steering for the 2WD version or hydrostatic power steering for 4WD version, independent dry shoe brakes, open operator station with ROPS (rollover protection structure) and 24.0 liters (6.3 US gal.; 5.3 Imp. gal) fuel tank.

The tractor could be equipped with the following engines:

  • From 2000 to 2002 the JD 790 used the Yanmar 3TNE84-JK engine. It is a 1.5 L, 1,496 cm2, (91.3 cu·in) three-cylinder natural aspirated diesel engine with 84.0 mm (3.31 in) of the cylinder bore and 90.0 mm (3.54 in) of the piston stroke. The compression ratio rating is 18.0:1. This engine produced 30.5 PS (22.4 kW; 30 HP) of gross output power and 25.3 PS (18.6 KW; 25.0 HP) of PTO horsepower.
  • After 2003 this compact tractor used the Yanmar 3TNV82A engine. It is a 1.3 L, 1,330 cm2, (81.2 cu·in) three-cylinder natural aspirated diesel engine. The cylinder bore is 82.0 mm (3.23 in) and the piston stroke is 84.0 mm (3.31 in). The compression ratio ratin is 18.0:1. This engine produced 30.5 PS (22.4 kW; 30 HP) of gross output power and 25.3 PS (18.6 KW; 25.0 HP) of PTO horsepower.

Following attachments are available for JD 790 utility tractor:

  • Mid-mount John Deere 60 in (1,520 mm) three-blade mower deck with hydraulic lift
  • John Deere 70 loader
  • John Deere 419 loader
  • John Deere 7 backhoe

John Deere 790 Specifications

General Specifications
Model John Deere 790
Length 2,820 mm (111 in)
Width 1,360 mm (53.5 in)
Height 2,080 mm (81.9 in)
Wheel base 1,550 mm (61 in)
Weight Early 2WD: 895 kg (1,973 lbs)
Early 4WD: 976 kg (2,150 lbs)
2WD: 875 kg (1,929 lbs)
4WD: 930 kg (2,050 lbs)
Fuel tank capacity 24.0 liters (6.3 US gal.; 5.3 Imp. gal)
Battery 12V Group 45 500 CCA
Cabin type Open operator station with ROPS
Engine
Engine model Yanmar 3TNE84-JK
Engine type Four-stroke, liquid-cooled, inline
Cylinders 3
Fuel type Diesel
Displacement 1.5 L, 1496 cm2, (91.3 cu·in)
Bore and stroke 84.0 mm X 90.0 mm (3.31 in X 3.54 in)
Compression ratio 18.0:1
Horsepower 30.5 PS (22.4 kW; 30 HP)
Starter Electric
Oil type API: CC
Oil capacity: 4.1 L (4.33 US. qt, 3.61 Imp. qt.)
Coolant capacity: 4.8 L (5.07 US. qt, 4.22 Imp. qt.)
Engine
Engine model Yanmar 3TNV82A
Engine type Four-stroke, liquid-cooled, inline
Cylinders 3
Fuel type Diesel
Displacement 1.3 L, 1330 cm2, (81.2 cu·in)
Bore and stroke 82.0 mm X 84.0 mm (3.23 in X 3.31 in)
Compression ratio 18.0:1
Horsepower 30.5 PS (22.4 kW; 30 HP)
Starter electric
Oil type API: CC
Oil capacity: 4.1 L (4.33 US. qt, 3.61 Imp. qt.)
Coolant capacity: 4.8 L (5.07 US. qt, 4.22 Imp. qt.)
Transmission and chassis
Chassis 4×2 2WD or 4×4 MFWD 4WD
Steering type Manual (2WD) and hydrostatic power (4WD)
Brakes Independent dry shoe
Transmission model
Transmission type Sliding gear
Gears 8 forward and 2 reverse
Speed Forward: 19.0 kmh (11.8 mph) Reverse: 5.5 (3.4 mph)
Transmission oil capacity 15.0 L (15.85 US. qt, 13.2 Imp. qt.)
Front axle gearcase (4WD) 2.13 L (2.25 US. qt, 1.87 Imp. qt.)
Tires
Front tires Ag: 6.00-12 (early); 5.00-15 (2WD); 7.00-14 (MFWD)
Lawn/turf: 25×8.50-14
Industrial: 25×8.50-14
Rear tires Ag: 12.4-16 (early); 11.2-24
Lawn/turf: 13.6-16
Industrial: 15.0-19.6
Three-Point Hitch
Caterogy I
Control type
Lift capacity 370 kg (816 lbs)
PTO (Power take-off shaft)
Middle PTO type
Middle PTO spped 2,100 rpm
Rear PTO type Transmission or live (two-stage clutch)
Rear PTO spped 540 rpm
Hydraulic system
Hydraulic type Open center
Hydraulic capacity 15.0 L (15.85 US. qt, 13.2 Imp. qt.)
Pressure 2,050 psi (141.3 bar)
Pump flow 5.4 gpm (20.4 lpm)
Steering flow 4.2 gpm (15.9 lpm)