John Deere 9420
The John Deere 9420 is a tractor produced by John Deere. It is equipped with a 765 ci 12.5 L engine. The listed engine power is Diesel (listed): 425 hp / 316.9 kW. Transmission: John Deere Powershift. Operating weight: 34870 to 37246 pounds.
Engine Power
Diesel (listed): 425 hp / 316.9 kW
Fuel & Capacities
270 gal
1022.0 L
Transmission
John Deere Powershift
Operating Weight
34870 to 37246 pounds
Overview
 | 2002 - 2007
9020 SeriesFour-wheel Drive (4WD) tractor
9020 Series
Four-wheel Drive (4WD) tractor |
|---|
Production | |
|---|---|
Manufacturer | John Deere |
Four-wheel Drive (4WD) tractor | |
Built in Waterloo, Iowa, USA | |
Variants | |
|---|---|
9420T | crawler tractor |
John Deere 9420 Engine | |
|---|---|
John Deere 12.5L 6-cyl diesel | |
Engine details ...  |
John Deere 9420 Power | |
|---|---|
Engine | 425 hp
316.9 kW |
PTO (claimed) | 316 hp
235.6 kW |
Drawbar (tested) | 345.00 hp
257.3 kW |
PTO (tested) | 312.25 hp
232.8 kW |
Performance test details ...  | |
Mechanical | |
|---|---|
Four-wheel drive | |
Steering | hydrostatic articulated |
Hydraulic wet disc brakes | |
CommandView cab standard with air-conditioning. | |
Capacity | |
|---|---|
Fuel | 270 gal
1022.0 L |
Hydraulic system | 27 gal
102.2 L |
28 gal (with 3pt)
106.0 L | |
30 gal (hi-flow)
113.6 L | |
31 gal (hi-flow/3pt)
117.3 L | |
Hydraulics | |
|---|---|
Type | closed center pressure/flow compensated |
Capacity | 27 gal
102.2 L |
28 gal (with 3pt)
106.0 L | |
30 gal (hi-flow)
113.6 L | |
31 gal (hi-flow/3pt)
117.3 L | |
Pressure | 2900 psi
200.0 bar |
Valves | 4 or 5 |
Pump flow | 30 gpm
113.6 lpm |
Total flow | 44 gpm
166.5 lpm |
48 gpm (Powershift)
181.7 lpm | |
78 gpm (hi-flow)
295.2 lpm | |
Tractor hitch | |
|---|---|
Rear Type | III |
IV/IVN | |
Rear lift | 13,871 lbs
6291 kg |
14,445 lbs (optional)
6552 kg | |
Power Take-off (PTO) | |
|---|---|
Rear PTO | independent |
Rear PTO Type | 1000 |
Dimensions & Tires | |
|---|---|
Wheelbase | 137.8 inches
350 cm |
Weight | 34870 to 37246 pounds |
Front tire | 710/70R42 |
Rear tire | 710/70R42 |
Full dimensions and tires ...  | |
Electrical | |
|---|---|
Ground | negative |
Charging system | alternator |
Charging amps | 140 |
Batteries | 3 |
Battery CCA | 925 |
Battery volts | 12 |
Engine
Engine Detail — 765 ci / 12.5 L Diesel
Manufacturer | John Deere |
Configuration | turbocharged diesel, 6-cylinder, liquid-cooled |
Displacement | 765 ci
12.5 L |
Bore/Stroke | 5.00x6.50 inches
127 x 165 mm |
Power | 425 hp
316.9 kW |
Air cleaner | dry |
Compression | 17:1 |
Rated RPM | 2100 |
Operating RPM | 1500-2100 |
Starter volts | 12 |
Coolant capacity | 64 qts
60.6 L |
Oil capacity | 44 qts
41.6 L |
Transmission
Transmission options | |
|---|---|
24-speed partial power shift | |
18-speed full power shift |
Transmission — John Deere PowerSync
Transmission | John Deere PowerSync |
Type | partial power shift |
Gears | 24 forward and 6 reverse |
Oil capacity | 136 qts
128.7 L |
140 qts (with PTO)
132.5 L | |
Four ranges (A-D) and three gears (1-3) with high-low power shift. Synchronized shifting between ranges A-B, B-C, and C-D. Gear shifts are synchronized between 1-R, 1-2, and 2-3. Reverse gear does not operate in D range. | |
With 710/70R42 tires. | |
 | |
Transmission — John Deere Powershift
Transmission | John Deere Powershift |
Type | full power shift |
Gears | 18 forward and 6 reverse |
Oil capacity | 141.6 qts
134.0 L |
145.6 qts (with PTO)
137.8 L | |
With 800/70R38 tires. | |
 | |
Dimensions
John Deere 9420 Tires | |
|---|---|
Ag front | 710/70R42 |
Ag rear | 710/70R42 |
Dimensions | |
|---|---|
Wheelbase | 137.8 inches
350 cm |
Length | 274 inches
695 cm |
289 inches (with hitch)
734 cm | |
Width | 115.5 inches
293 cm |
Clearance (front axle) | 28.8 inches
73 cm |
Clearance (drawbar) | 17 inches
43 cm |
John Deere 9420 Weight | |
|---|---|
Shipping | 34,870 lbs
15817 kg |
Operating | 37,246 lbs (620/70R42 duals)
16894 kg |
Ballasted | 41,456 lbs
18804 kg |
John Deere 9420 Height | |
|---|---|
Hood | 97.5 inches
247 cm |
Cab | 137.5 inches
349 cm |
Exhaust | 140 inches
355 cm |
Tests
OCED Tractor Test 1733 | |
|---|---|
Diesel 24-speed 4WD
May 2 - June 18, 1997
Link: OCED Tractor Test 1733 file | |
PTO performance | |
Power at rated engine speed | 312.25 hp
232.8 kW |
Fuel use | 17.2 gal/hour
65.1 l/hour |
Power at rated PTO speed | 343.44 hp
256.1 kW |
Fuel use | 18.0 gal/hour
68.1 l/hour |
Drawbar performance | |
Max power | 345.00 hp
257.3 kW |
Fuel use | 20.3 gal/hour
76.8 l/hour |
Max pull | 38,409 lbs
17422 kg |
Recommended Implements & Sizing Guide
Engineering recommendations for John Deere 9420 based on its 425 HP power envelope and ASAE agricultural standards.
| Implement & Operation | Recommended Size | Workload Rating | Engineering Notes |
|---|---|---|---|
Moldboard PlowPrimary Tillage | 8+ Bottom On-Land Hitch8+ 铧重型机外牵引犁 | Commercial / Field Scale | High horsepower articulated/4WD field plowing. |
Rotary Cutter / MowerMowing & Clearing | 15 to 20 ft Batwing4.6 - 6.1 m 宽幅折叠翼 | Commercial / Field Scale | Large commercial field and roadside mowing operations. |
Rotary TillerSeedbed Prep | 90 to 120 in Heavy Duty230 - 300 cm 重型旋耕机 | Commercial / Field Scale | Deep intensive seedbed preparation for commercial row crops. |
Disc HarrowSecondary Tillage | 24 to 36 ft Heavy Duty Field Disc7.3 - 11.0 m 超宽重型整地耙 | Commercial / Field Scale | Broad-acre grain tillage for high-drawbar tractors. |
Hay BalerHay & Forage | Large Square Baler (3x4 or 4x4)大方捆商用打捆机 (1.2x1.2 m) | Commercial / Field Scale | High-capacity commercial forage harvesting (1000 RPM PTO). |
Sizing & Soil Condition NoteActual implement sizing varies depending on local soil conditions (heavy clay vs sandy loam), field slope, and operating speed. Heavy tillage implements may require front ballast weights and wheel weights.
Fluids, Capacities & Working Autonomy
Standard fluid requirements, service intervals, and continuous runtime estimates for John Deere 9420.
Estimated Continuous Field Runtime: 12.2 hrs
Approximately 12.2 hours of continuous field operation at ~75% rated power on a full tank (270 gal / 1022.1 L).
Estimated 75% Load Fuel Burn~22.1 gal/hr (83.7 L/hr)
Engine Crankcase Oil
SAE 15W-40 (Heavy Duty Diesel)
Standard Spec: API CK-4 / CJ-4 Heavy Duty
Service Interval: 150 – 250 Hours
Transmission & Hydraulic System
UTTO (Universal Tractor Transmission Oil)
Standard Spec: ISO VG 46 / 68 (Wet Brake & Trans Compatible)
Service Interval: 600 – 1000 Hours
Engine Cooling System
50/50 Ethylene Glycol Pre-mix
Standard Spec: ASTM D6210 / Heavy-Duty OAT Antifreeze
Service Interval: 2 Years / 1500 Hours
John Deere 9420 Specification Unit Converter
Convert power, fluid capacities, and operating weights between metric and imperial standards for John Deere 9420.
Converted Equivalents:
Horsepower (HP)425 hp
Kilowatts (kW)316.9 kW
Metric Horsepower (PS / CV)430.9 PS
Direct Competitor Comparison
Compare John Deere 9420 against same-era industry alternatives in the same horsepower class.
Current Model
John Deere
John Deere 9420
Engine Power:Diesel (listed): 425 hp / 316.9 kW
★ Baseline Reference
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