John Deere 4630

The John Deere 4630 is a 2WD or 4WD row-crop tractor from the Generation II series. This tractor was manufactured by John Deere in Waterloo, Iowa, USA from 1973 to 1977.

The John Deere 4630 row-crop tractor used the John Deere engine. It is a 6.6 L, 6,620 cm2, (404 cu·in) six-cylinder aftercooled turbocharged diesel engine with 108.0 mm (4.25 in) of the cylinder bore and 120.0 mm (4.72 in) of the piston stroke. The compression ratio rating is 15.1:1. The John Deere motor used a direct injection fuel system, a dry-type air cleaner with the secondary element, ether injection pre-heating system, full pressure, full flow lubrication system with bypass and micronic filter element; pressure cooling system with centrifugal pump and thermostatic heat control; Delco-Remy electric starter. This engine produced 166 PS (122 KW; 164 HP) of maximum output power.

The John Deere 4630 is equipped with full-power hydrostatic power steering, full-power wet disc differential brakes, Sound-Gard cab with air-conditioning and 246 liters (65 US gal.; 54.1 Imp. gal) fuel tank. The JD 4430 was available with John Deere 158 loader.

The JD 4630 tractor used one of three transmissions:

  • John Deere Syncro-Range: partially synchronized transmission and Perma-Clutch with triple wet disc (8 forward and 2 reverse gears)
  • John Deere Quad-Range: partial power shift transmission and Perma-Clutch with triple wet disc (16 forward and 6 reverse gears)
  • John Deere Power Shift: full power shift transmission with wet disc clutch (8 forward and 2 reverse gears)

John Deere 4630 Specifications

General Specifications
ModelJohn Deere 4630
Length4,350 mm (171.3 in)
Width2,430 mm (95.7 in)
Height2,970 mm (116.9 in)
Wheel base2,860 mm (112.6 in)
Weight6,070 kg (13382 lbs)
Fuel tank capacity246 liters (65 US gal.; 54.1 Imp. gal)
BatteryTwo 6V CCA: 800, Group 5D
Cabin typeSound-Gard cab with a/c
Engine modelJohn Deere
Engine typeFour-stroke, liquid-cooled, inline
Fuel typeDiesel
Displacement6.6 L, 6,620 cm2, (404 cu·in)
Bore and stroke108.0 mm X 120.0 mm (4.25 in X 4.72 in)
Compression ratio15.1:1
Horsepower166 PS (122 KW; 164 HP)
Oil capacity:15.6 L (16.48 US. qt, 13.73 Imp. qt.)
Coolant capacity:34.0 L (35.93 US. qt, 29.92 Imp. qt.)
Transmission and chassis
Chassis4×2 2WD or 4×4 HFWD 4WD
Steering typeFull-power hydrostatic power
BrakesFull-power wet disc differential
Transmission modelJohn Deere Syncro-Range
Transmission typePartially synchronized with hydraulic wet disc clutch
Gears8 forward and 2 reverse
Transmission modelJohn Deere Quad-Range
Transmission typePartial power shift with hydraulic wet disc clutch
Gears16 forward and 6 reverse
Transmission modelJohn Deere Power Shift
Transmission typeFull power shift with hydraulic wet disc clutch
Gears8 forward and 4 reverse
Speed Forward: 28.5 kmh (17.7 mph) Reverse: 9.5 (5.9 mph)
Front tiresAg: 10.00-16
Rear tiresAg: 18.4-38
Three-Point Hitch
Control type
Lift capacity2380 kg (5248 lbs)
PTO (Power take-off shaft)
Rear PTO typeIndependent
Rear PTO spped1,000 rpm
Hydraulic system
Hydraulic typeClosed center
Hydraulic capacity60.0 L (63.4 US. qt, 52.79 Imp. qt.)
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