John Deere 9420T
The John Deere 9420T 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 PowrSync. Drive type: crawler. Operating weight: 39,000 lbs 17690 kg.
Engine Power
Diesel (listed): 425 hp / 316.9 kW
Drive & Traction
crawler
Fuel & Capacities
320 gal
1211.2 L
Transmission
John Deere PowrSync
Operating Weight
39,000 lbs
17690 kg
Overview
 | 2002 - 2007
9020 SeriesAgricultural Crawler tractor
9020 Series
Agricultural Crawler tractor |
|---|
Production | |
|---|---|
Manufacturer | John Deere |
Agricultural Crawler tractor | |
Built in Waterloo, Iowa, USA | |
Variants | |
|---|---|
9420 | wheeled tractor |
John Deere 9420T Engine | |
|---|---|
John Deere 12.5L 6-cyl diesel | |
Engine details ...  |
John Deere 9420T Power | |
|---|---|
Engine | 425 hp
316.9 kW |
PTO (claimed) | 302 hp
225.2 kW |
Drawbar (tested) | 323.43 hp
241.2 kW |
PTO (tested) | 346.53 hp
258.4 kW |
Performance test details ...  | |
Mechanical | |
|---|---|
Drive | crawler |
Steering | electro-hydraulic power |
Hydraulic wet disc brakes | |
Cab standard. | |
Capacity | |
|---|---|
Fuel | 320 gal
1211.2 L |
Hydraulic system | 27 gal
102.2 L |
27.5 gal (with 3-pt)
104.1 L | |
Hydraulics | |
|---|---|
Type | closed center pressure/flow compensated |
Capacity | 27 gal
102.2 L |
27.5 gal (with 3-pt)
104.1 L | |
Pressure | 2900 psi
200.0 bar |
Valves | 4 or 5 |
Pump flow | 30 gpm (one SCV)
113.6 lpm |
Total flow | 44 gpm (PowrSync)
166.5 lpm |
48 gpm (Powershift)
181.7 lpm | |
Tractor hitch | |
|---|---|
Rear Type | III, IV/IVN |
Rear lift | 13,871 lbs
6291 kg |
14,445 lbsOptOptional
6552 kg | |
Power Take-off (PTO) | |
|---|---|
Rear PTO | independent |
Rear PTO Type | 1000 |
Dimensions & Tracks | |
|---|---|
Wheelbase | 111 inches
281 cm |
Weight | 39,000 lbs
17690 kg |
30-inch tracks | |
Full dimensions and tracks ...  | |
Electrical | |
|---|---|
Ground | negative |
Charging system | alternator |
Charging amps | 140 |
Batteries | 3 |
Battery CCA | 925 |
Battery volts | 12 |
References | |
|---|---|
 | |
8020T/9020T Series published in 2003, by John Deere | |
Operator's Manual 9320T, 9420T, 9520T and 9620T (OMAR288229) published in 2006 |
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 |
Compression | 17:1 |
Rated RPM | 2100 |
Starter volts | 12 |
Coolant capacity | 64 qts
60.6 L |
Oil capacity | 44 qts
41.6 L |
Transmission
Transmission options | |
|---|---|
18-speed full power shift | |
24-speed partial power shift |
Transmission — John Deere PowerShift
Transmission | John Deere PowerShift |
Type | full power shift |
Gears | 18 forward and 6 reverse |
Oil capacity | 240 qts
227.1 L |
244 qts (with PTO)
230.9 L | |
 | |
Transmission — John Deere PowrSync
Transmission | John Deere PowrSync |
Type | partial power shift |
Gears | 24 forward and 6 reverse |
Oil capacity | 256 qts
242.3 L |
260 qts (with PTO)
246.1 L | |
Four synchronized ranges (A-D) with three synchronized gears (1-3) and a high-low power shift. | |
 | |
Dimensions
John Deere 9420T Tracks | |
|---|---|
Width | 30 inches
76 cm |
Length on ground | 111 inches
281 cm |
Area on ground | 6660 in²
4.3 m² |
Width | 36 inches
91 cm |
Length on ground | 111 inches
281 cm |
Area on ground | 7992 in²
5.2 m² |
Dimensions | |
|---|---|
Wheelbase | 111 inches
281 cm |
Length | 237 inches
601 cm |
269 inches (with hitch)
683 cm | |
Width | 141 inches (36-inch track)
358 cm |
136 inches (30-inch track)
345 cm | |
Height (cab) | 136 inches
345 cm |
Height (exhaust) | 138.5 inches
351 cm |
Weight | 39,000 lbs
17690 kg |
Max weight | 50,000 lbs
22680 kg |
Ground clearance | 16 inches
40 cm |
19 inches (drawbar)
48 cm | |
Tests
OCED Tractor Test 1791 | |
|---|---|
Diesel 24-speed crawler
March 27 - April 13, 2001
Link: OCED Tractor Test 1791 file | |
PTO performance | |
Max power | 346.53 hp
258.4 kW |
Fuel use | 18.8 gal/hour
71.2 l/hour |
Power at rated engine speed | 299.66 hp
223.5 kW |
Fuel use | 17.7 gal/hour
67.0 l/hour |
Power at rated PTO speed | 331.95 hp
247.5 kW |
Fuel use | 17.9 gal/hour
67.8 l/hour |
Drawbar performance | |
Max power | 323.43 hp
241.2 kW |
Fuel use | 20.1 gal/hour
76.1 l/hour |
Max pull | 42,421 lbs
19242 kg |
Gear 1 used for pull test. | |
Recommended Implements & Sizing Guide
Engineering recommendations for John Deere 9420T 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 9420T.
Estimated Continuous Field Runtime: 14.5 hrs
Approximately 14.5 hours of continuous field operation at ~75% rated power on a full tank (320 gal / 1211.3 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 9420T Specification Unit Converter
Convert power, fluid capacities, and operating weights between metric and imperial standards for John Deere 9420T.
Converted Equivalents:
Horsepower (HP)425 hp
Kilowatts (kW)316.9 kW
Metric Horsepower (PS / CV)430.9 PS
Direct Competitor Comparison
Compare John Deere 9420T against same-era industry alternatives in the same horsepower class.
Current Model
John Deere
John Deere 9420T
Engine Power:Diesel (listed): 425 hp / 316.9 kW
★ Baseline Reference
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