Deutz-Fahr DX 3.90
The Deutz-Fahr DX 3.90 is a tractor produced by Deutz Fahr. It is equipped with a 249.33 ci 4.1 L engine. The listed engine power is Diesel (listed): 75 hp / 55.9 kW. Transmission: Dual-Split. Operating weight: 6922 to 8333 pounds.
Engine Power
Diesel (listed): 75 hp / 55.9 kW
Fuel & Capacities
23 gal
87.1 L
Transmission
Dual-Split
Operating Weight
6922 to 8333 pounds
Overview
 | 1985 - 1989
DX 3 SeriesUtility tractor
DX 3 Series
Utility tractor |
|---|
Production | |
|---|---|
Manufacturer | Deutz-Fahr |
Utility tractor | |
Built in Germany | |
Deutz-Fahr DX 3.90 Engine | |
|---|---|
Deutz 4.1L 4-cyl diesel | |
Engine details ...  |
Deutz-Fahr DX 3.90 Power | |
|---|---|
Engine | 75 hp
55.9 kW |
Mechanical | |
|---|---|
Two- or four-wheel drive | |
Differential lock | mechanical rear |
Power steering | |
Hydraulic drum brakes | |
Four-post ROPS with canopy. StarCab optional. | |
Capacity | |
|---|---|
ROPS Fuel | 23 gal
87.1 L |
Cab Fuel | 22.5 gal
85.2 L |
Hydraulic system | 4 gal
15.1 L |
7.5 galOptOptional
28.4 L | |
Hydraulics | |
|---|---|
Type | open center |
Capacity | 4 gal
15.1 L |
7.5 galOptOptional
28.4 L | |
Pressure | 2538 psi
175.0 bar |
Rear valves | 1 to 3 |
Front valves | 2 OptOptional |
Pump flow | 17.7 gpm
67.0 lpm |
Tractor hitch | |
|---|---|
Rear Type | II |
Control | position and draft control |
Rear lift | 7275 lbs
3299 kg |
Front Hitch | II OptOptional |
Power Take-off (PTO) | |
|---|---|
Rear PTO | independent |
Rear PTO Type | 540 (1.375) |
Front PTO | independent OptOptional |
Clutch | dry disc |
Front PTO Type | 1000 |
Dimensions & Tires | |
|---|---|
2WD Wheelbase | 91.5 inches
232 cm |
4WD Wheelbase | 94 inches
238 cm |
Weight | 6922 to 8333 pounds |
Front tire | 10.00x16 |
2WD Rear tire | 18.4x30 |
Full dimensions and tires ...  | |
References | |
|---|---|
 | |
DX3.10-DX3.30-DX3.50-DX3.70-DX3.90 published in 1985, by Deutz-Fahr |
Engine
Engine Detail — 249.33 ci / 4.1 L Diesel
Manufacturer | Deutz F4L 913 |
Fuel Type | Diesel |
Configuration | 4-cylinder, air-cooled |
Displacement | 249.33 ci
4.1 L |
Bore/Stroke | 3.94x4.84 inches
100 x 123 mm |
Power | 75 hp
55.9 kW |
Rated RPM | 2350 |
Oil capacity | 10.5 qts
9.9 L |
Transmission
Transmission options | |
|---|---|
12-speed partially synchronized | |
24-speed two-speed power shift |
Transmission — 12 forward and 4 reverse partially synchronized
Type | partially synchronized |
Gears | 12 forward and 4 reverse |
Clutch | dry disc |
Oil capacity | 39.1 qts
37.0 L |
Four synchronized gears (1-4) in three ranges (creeper/low/high) plus reverse range. | |
Transmission — Dual-Split
Transmission | Dual-Split |
Type | two-speed power shift |
Gears | 24 forward and 8 reverse |
Clutch | dry disc |
Dual-split adds a two-speed high/low shift to the basic transmission. Four gears in three forward ranges and one reverse range. | |
Dimensions
Deutz-Fahr DX 3.90 Tires | |
|---|---|
2WD Standard tires (ag) | Front: 10.00x16. Rear: 18.4x30 |
4WD Standard tires (ag) | Front: 12.4x24. Rear: 18.4x30 |
2WD Optional tires (ag) | Front: 11.00x16. Rear: 16.9x34 |
Dimensions | |
|---|---|
2WD Wheelbase | 91.5 inches
232 cm |
4WD Wheelbase | 94 inches
238 cm |
Length | 157.9 inches
401 cm |
Width | 82.3 inches
209 cm |
Height (ROPS) | 97.3 inches
247 cm |
Height (cab) | 101.3 inches
257 cm |
Rear tread | 59 to 78.8 inches
149 to 200 cm |
Deutz-Fahr DX 3.90 Weight | |
|---|---|
2WD ROPS | 6922 lbs
3139 kg |
2WD Cab | 7826 lbs
3549 kg |
4WD ROPS | 7429 lbs
3369 kg |
4WD Cab | 8333 lbs
3779 kg |
Photos
Deutz-Fahr DX 3.90
Deutz-Fahr DX 3.90
Deutz-Fahr DX 3.90
Recommended Implements & Sizing Guide
Engineering recommendations for Deutz Fahr Deutz-Fahr DX 3.90 based on its 75 HP power envelope and ASAE agricultural standards.
| Implement & Operation | Recommended Size | Workload Rating | Engineering Notes |
|---|---|---|---|
Moldboard PlowPrimary Tillage | 3 to 4 Bottom (16")3 - 4 铧 (40 cm) | Heavy Duty | Suitable for medium loam and stubble turnover. |
Rotary Cutter / MowerMowing & Clearing | 7 to 8 ft (84-96 in)2.1 - 2.4 m | Heavy Duty | Heavy-duty twin spindle cutter for overgrown acreage. |
Rotary TillerSeedbed Prep | 78 to 84 in200 - 215 cm | Heavy Duty | Heavy commercial tiller with multi-speed gearbox. |
Disc HarrowSecondary Tillage | 10 to 14 ft Tandem / Offset3.0 - 4.2 m 重型交错耙 | Heavy Duty | Aggressive residue cutting in corn/cotton stubble. |
Hay BalerHay & Forage | 4x4 to 4x5 Round Baler1.2x1.5 m 紧凑圆捆机 | Heavy Duty | Silage and dry hay; 540 RPM PTO with slip-clutch. |
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 Deutz Fahr Deutz-Fahr DX 3.90.
Estimated Continuous Field Runtime: 5.9 hrs
Approximately 5.9 hours of continuous field operation at ~75% rated power on a full tank (23 gal / 87.1 L).
Estimated 75% Load Fuel Burn~3.9 gal/hr (14.8 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
Deutz Fahr Deutz-Fahr DX 3.90 Specification Unit Converter
Convert power, fluid capacities, and operating weights between metric and imperial standards for Deutz Fahr Deutz-Fahr DX 3.90.
Converted Equivalents:
Horsepower (HP)75 hp
Kilowatts (kW)55.9 kW
Metric Horsepower (PS / CV)76 PS
Direct Competitor Comparison
Compare Deutz-Fahr DX 3.90 against same-era industry alternatives in the same horsepower class.
Current Model
Deutz Fahr
Deutz-Fahr DX 3.90
Engine Power:Diesel (listed): 75 hp / 55.9 kW
★ Baseline Reference
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