John Deere 4620 Specs ( 1971-1972 )
Production
| Description | Row-Crop tractor / Built in Waterloo, Iowa, USA / Original price was $15,000 in 1972 |
|---|---|
| Manufacturer | John Deere |
| Total built | 6,928 |
Engine
| Engine type | John Deere 6.6L 6-cyl diesel |
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| Air cleaner | dry with safety element |
| Bore/Stroke | 4.25x4.75 inches (108 x 121 mm) |
| Compression | 16.4:1 |
| Coolant capacity | 28 qts (26.5 L) |
| Description | John Deere / intercooled turbocharged diesel / 6-cylinder / liquid-cooled |
| Displacement | 404 ci (6.6 L) |
| Firing order | 1-5-3-6-2-4 |
| Idle RPM | 800-2200 |
| Oil capacity | 16 qts (15.1 L) |
| Operating RPM | 1500-2200 |
| Rated RPM | 2200 |
| Starter volts | 12 |
| Drawbar (tested) | 115.75 hp (86.3 kW) |
| PTO (claimed) | 135 hp (100.7 kW) |
| PTO (tested) | 135.76 hp (101.2 kW) |
Transmission
| Clutch | 14.75-inch dry disc / hydraulic wet discs |
|---|---|
| Gears | 8 forward and 2 reverse / 8 forward and 4 reverse |
| Oil capacity | 64 qts (60.6 L) / 72 qts (68.1 L) |
| Transmission | John Deere Syncro-Range / John Deere Power Shift |
| Type | partially synchronized / full power shift |
| Transmission type | 8-speed partially synchronized / 8-speed full power shift |
| Transmission type | 8-speed partially synchronized / 8-speed full power shift |
Mechanical
| Cab | Open operator station. Optional two-post Roll-Gard ROPS and canopy. Cab optional. |
|---|---|
| Description | Hydraulic wet disc brakes |
| Differential lock | hydro-mechanical rear |
| Drive | 4x2 2WD |
| Final drives | planetary |
| Steering | hydrostatic power |
Capacity
| Fuel | 50 gal (189.2 L) |
|---|---|
| Hydraulic system | 16 gal (Syncro) (60.6 L) |
Hydraulics
| Capacity | 16 gal (Syncro) (60.6 L) |
|---|---|
| Type | closed center |
Hitch
| Rear Type | III/II |
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PTO
| Engine RPM | 1000@1900 |
|---|---|
| Rear PTO | independent |
| Rear PTO Type | 1000 |
Electrical
| Batteries | 2 |
|---|---|
| Battery volts | 6 |
| Charging system | alternator |
| Ground | negative |
Dimensions & Tires
| Clearance (drawbar) | 17.8 inches (45 cm) |
|---|---|
| Clearance (front axle) | 23.8 inches (60 cm) |
| Clearance (rear axle) | 31.1 inches (78 cm) |
| Front tread | 56 to 84.8 inches (142 to 215 cm) / 64 to 88 inches (wide axle) (162 to 223 cm) / 72 to 88 inches (4WD) (182 to 223 cm) |
| Height | 106 inches (269 cm) |
| Height (steering wheel) | 87 inches (220 cm) |
| Length | 170.7 inches (433 cm) |
| Rear tread | 70 to 100 inches (cast wheels) (177 to 254 cm) / 60 to 107.5 inches (offset wheels) (152 to 273 cm) / 70 to 112 inches (long axle) (177 to 284 cm) / 60 to 120 inches (offset long axle) (152 to 304 cm) / 70 to 122 inches (extra long axle) (177 to 309 cm) / 60 to 130 inches (cast extra long axle) (152 to 330 cm) |
| Wheelbase | 106.5 inches (270 cm) |
| Width | 95.8 inches (243 cm) |
| Front tire | 11.00-16 |
| Rear tire | 20.8-38 |
| Weight | 12980 to 14930 pounds |
| Wheelbase | 106.5 inches (270 cm) |
| Ag front | 11.00-16 / 9.50-20 |
| Ag rear | 20.8-38 / 18.4-38 |
4620 Serial Number Location
| Description | Serial number plate on the rear of the tractor, above the PTO shaft. |
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4620 Serial Numbers
| 1971 | 10001 |
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| 1972 | 13692 |
| Description | FAQ: How to read a serial number table. |
| Final | 16967 |
John Deere 4620 Weight
| Ballasted | 18640 lbs (8455 kg) |
|---|---|
| Operating | 14930 lbs (6772 kg) |
| Shipping | 12980 lbs (5887 kg) |
Nebraska Tractor Test 1064
| Description | Diesel PowerShift 2WDApril 20 - May 4, 1971Link: Nebraska Tractor Test 1064 file / PTO performance / Drawbar performance / Gear 4 used for power test. / Gear 2 used for pull test. |
|---|---|
| Fuel use | 9.2 gal/hour (34.8 l/hour) / 8.3 gal/hour (31.4 l/hour) / 9.1 gal/hour (34.4 l/hour) |
| Max power | 110.92 hp (82.7 kW) |
| Max pull | 14,471 lbs (6564 kg) |
| Power at rated engine speed | 135.62 hp (101.1 kW) |
| Power at rated PTO speed | 130.79 hp (97.5 kW) |
Nebraska Tractor Test 1073
| Description | Diesel SyncroRange 2WDJune 16 - 22, 1971Link: Nebraska Tractor Test 1073 file / PTO performance / Drawbar performance / Gear 4 used for power test. / Gear 2 used for pull test. |
|---|---|
| Fuel use | 9.2 gal/hour (34.8 l/hour) / 8.4 gal/hour (31.8 l/hour) / 9.1 gal/hour (34.4 l/hour) |
| Max power | 115.75 hp (86.3 kW) |
| Max pull | 13,916 lbs (6312 kg) |
| Power at rated engine speed | 135.76 hp (101.2 kW) |
| Power at rated PTO speed | 130.27 hp (97.1 kW) |
References
| Description | The John Deere 20 Series New Generation Tractors by Benjamin Hain / Operator's Manual 4620 Tractor (OM-R48272) published in 1982 |
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Speeds
| Description | With 20.8-38 rear tires. |
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Tractor Tests
| Description | NTTL 1064: diesel PowerShift 2WD / NTTL 1073: diesel SyncroRange 2WD |
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