John Deere 9120

John Deere 9120 Four-wheel Drive (4WD) tractor Technical Specifications

John Deere 9120 is a Row-Crop tractor that was produced by the John Deere between 2002 – 2007.

Below you will find detailed technical specifications for John Deere 9120 covering engine types, horsepower ratings, weight, height, fuel type and tank volume, oil capacity and type, hydraulic system diagram, wiring diagram, battery specs, etc.

John Deere 9120 Production

Manufacturer: John Deere
Type: Four-wheel Drive (4WD) tractor
Factory: Waterloo, Iowa, USA

John Deere 9120 Power

Engine: 280 hp
208.8 kW
PTO (claimed): 230 hp
171.5 kW
Drawbar (tested): 226.02 hp
168.5 kW
PTO (tested): 244.57 hp
182.4 kW

John Deere 9120 Electrical

Ground: negative
Charging system: alternator
Charging amps: 140
Batteries: 2
Battery CCA: 925
Battery volts: 12

John Deere 9120 Mechanical

Chassis: 4×4 articulated 4WD
Steering: hydrostatic articulated
Brakes: hydraulic wet disc
Cab: CommandView cab standard with air-conditioning.
Transmissions: 24-speed partial power shift
  18-speed full power shift


Fuel: 270 gal
1022.0 L
Hydraulic system: 27 gal
102.2 L
  28 gal
106.0 L (with 3pt)


Type: closed center pressure/flow compensated
Capacity: 27 gal
102.2 L
  28 gal
106.0 L (with 3pt)
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
181.7 lpm (Powershift)

Tracktor Hitch

Rear Type: III
Rear lift: 13,871 lbs
6291 kg
  14,445 lbs
6552 kg (optional)

Power Take-off (PTO)

Rear PTO: independent
Rear RPM: 1000

Title serial numbers

Location: On the top-left of rear hinge member
2002: 1001
2003: 10001
2004: 20001
2005: 30001
2006: 40001
2007: 50001

how to read serial numbers…

What year is my John Deere 9120? Serial Number Decoder

The serial number list shows the first tractor built in each year. The other tractors for that year will have successively higher numbers. Your serial number should be between two of the stated numbers.

The list only includes the numbers of the first tractors produced in each year. Your serial should be somewhere between two numbers.Unless you happen to be the first person to own a tractor, your number will not appear on the list.

John Deere 9120 Engine detail

Engine Detail
John Deere
turbocharged diesel
Displacement: 496 ci
8.1 L
Bore/Stroke: 4.56×5.06 inches
116 x 129 mm
Power: 280 hp
208.8 kW
Air cleaner: dry
Compression: 16.0:1
Rated RPM: 2100
Starter volts: 12
Coolant capacity: 55 qts
52.1 L

John Deere 9120 Transmission overview

Engine Oil

Transmission: John Deere PowerSync
Type: partial power shift
Gears: 24 forward and 6 reverse
Oil capacity: 136 qts
128.7 L
  140 qts
132.5 L (with PTO)
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.

John Deere 9120 Dimensions

Wheelbase: 137.8 inches
350 cm
Length: 274 inches
695 cm
  289 inches
734 cm (with hitch)
Width: 115.5 inches
293 cm
Shipping weight: 30,970 lbs
14047 kg
Operating weight: 35,375 lbs
16046 kg (620/70R46 duals)
Clearance (front axle): 26.8 inches
68 cm
Clearance (drawbar): 15 inches
38 cm

John Deere 9120 Height
Hood: 97.5 inches
247 cm
Cab: 137.5 inches
349 cm
Exhaust: 140 inches
355 cm

John Deere 9120 Tests

OCED Tractor Test 1810

OCED Tractor Test 1810
Diesel 18-speed 4WD
September 23 – 27, 2002
Link: OCED Tractor Test 1810 file
PTO performance
Power at rated engine speed: 244.57 hp
182.4 kW
Fuel use: 14.6 gal/hour
55.3 l/hour
Power at rated PTO speed: 262.97 hp
196.1 kW
Fuel use: 14.4 gal/hour
54.5 l/hour
Drawbar performance
Max power: 226.02 hp
168.5 kW
Fuel use: 14.5 gal/hour
54.9 l/hour
Gear 7 used for power test.
Max pull: 35,211 lbs
15971 kg
Gear 1 used for pull test.


Is John Deere 9120 a good tractor?

The John Deere 9120 is one of the great tractors in the John Deere stable, and it has earned John Deere a fantastic reputation.

How much oil does a John Deere 9120 take?

Check out the John Deere 9120 oil capacity and oil type in the engine specs section as it may vary across the engines. Keep in mind, that older models might have their oil capacity increased over time. You may compare between the early and late oil capacity.

Do tractors have VIN numbers?

Every tractor has a VIN number. The number is usually engraved below the driver’s seat. Tractor manufacturers put the number in different places on the tractor body.

What was the last year John Deere made the 9120?

The John Deere 9120 was an agricultural tractor model made from 2002 – 2007

Where is the serial number on a John Deere 9120?

Lookup on the top-left of rear hinge member

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