J.I. Case 731
The J.I. Case 731 is a tractor produced by J I Case. It is equipped with a 267 ci 4.4 L engine. The listed engine power is 56.43 hp 42.1 kW. Transmission: Dual-Range. Operating weight: 7,095 lbs 3218 kg.
Engine Power
56.43 hp
42.1 kW
Fuel & Capacities
22 gal
83.3 L
Transmission
Dual-Range
Operating Weight
7,095 lbs
3218 kg
Overview
 | 1960 - 1969
730 SeriesRow-Crop tractor
730 Series
Row-Crop tractor |
|---|
Production | |
|---|---|
Manufacturer | J.I. Case |
Row-Crop tractor | |
Original price | $6,900 (1969) |
Variants | |
|---|---|
730 | standard-front diesel |
731 | row-crop diesel |
732 | Western Special diesel |
733 | high-clearance diesel |
734 | orchard diesel |
740 | standard-front gas |
741 | row-crop gas |
742 | Western Special gas |
743 | high-clearance gas |
744 | orchard gas |
J.I. Case 731 Engine | |
|---|---|
J.I. Case 4.4L 4-cyl diesel | |
Fuel tank | 22 gal
83.3 L |
Engine details ...  | |
J.I. Case 731 Power | |
|---|---|
Plows | 5 |
Drawbar (tested) | 48.33 hp
36.0 kW |
PTO (tested) | 56.50 hp
42.1 kW |
Performance test details ...  | |
Mechanical | |
|---|---|
Two-wheel drive | |
Steering | manual |
power optional | |
Differential disc brakes | |
Open operator station. | |
Hydraulics | |
|---|---|
Type | open center |
Valves | 1 |
Tractor hitch | |
|---|---|
Rear Type | II |
Type | Case Eagle Hitch |
Power Take-off (PTO) | |
|---|---|
Rear PTO | independent |
Rear PTO Type | 540 |
1000 | |
Dimensions & Tires | |
|---|---|
Wheelbase | 83 inches
210 cm |
Weight | 7,095 lbs
3218 kg |
Front tire | 6.00-16 |
Rear tire | 13.6-38 |
Full dimensions and tires ...  | |
References | |
|---|---|
 | |
295 / 391 / 392 Loaders published in 1966, by J.I. Case | |
1960 Progress Parade of Case Farm Equipment published by J.I. Case | |
A Complete New Line of Case Plus-Powered Tractors published in 1960, by J.I. Case | |
1965 Buyers Guide published by J.I. Case | |
Buyers Guide for '67 published in 1967, by J.I. Case |
Engine
Engine Detail — 267 ci / 4.4 L Diesel
Manufacturer | J.I. Case |
Fuel Type | Diesel |
Configuration | 4-cylinder, liquid-cooled |
Displacement | 267 ci
4.4 L |
Bore/Stroke | 4.125x5.00 inches
105 x 127 mm |
Air cleaner | oil bath |
Compression | 15.2:1 |
Rated RPM | 1700 (Dual-Range) |
1900 (Case-o-Matic) | |
Starter volts | 12 |
Coolant capacity | 7.5 qts
7.1 L |
Transmission
Transmission options | |
|---|---|
8-speed torque converter | |
8-speed unsynchronized |
Transmission — Case-o-matic
Transmission | Case-o-matic |
Type | torque converter |
Gears | 8 forward and 2 reverse |
 | |
Transmission — Dual-Range
Transmission | Dual-Range |
Type | unsynchronized |
Gears | 8 forward and 2 reverse |
Clutch | mechanical dry disc |
 | |
Dimensions
J.I. Case 731 Tires | |
|---|---|
Ag front | 6.00-16 |
Ag rear | 13.6-38 |
Dimensions | |
|---|---|
Wheelbase | 83 inches
210 cm |
Operating weight | 7,095 lbs
3218 kg |
Ballasted weight | 9,525 lbs
4320 kg |
Tests
Tractor Tests | |
|---|---|
NTTL 742: diesel Case-O-Matic 2WD | |
NTTL 743: diesel 8-speed 2WD |
Nebraska Tractor Test 742 | |
|---|---|
Diesel Case-O-Matic 2WD
April 19 - May 6, 1960
Link: Nebraska Tractor Test 742 file | |
PTO performance | |
Power at rated engine speed | 56.50 hp
42.1 kW |
Fuel use | 4.3 gal/hour
16.3 l/hour |
Power at rated PTO speed | 53.46 hp
39.9 kW |
Fuel use | 3.9 gal/hour
14.8 l/hour |
Drawbar performance | |
Max power | 48.31 hp
36.0 kW |
Fuel use | 4.2 gal/hour
15.9 l/hour |
Gear 4 used for power test. | |
Max pull | 7362 lbs
3339 kg |
Gear 2-Torque used for pull test. | |
Nebraska Tractor Test 743 | |
|---|---|
Diesel 8-speed 2WD
April 21 - May 6, 1960
Link: Nebraska Tractor Test 743 file | |
PTO performance | |
Power at rated engine speed | 56.43 hp
42.1 kW |
Fuel use | 3.8 gal/hour
14.4 l/hour |
Drawbar performance | |
Max power | 48.33 hp
36.0 kW |
Fuel use | 3.8 gal/hour
14.4 l/hour |
Gear 4 used for power test. | |
Max pull | 7531 lbs
3416 kg |
Gear 2 used for pull test. | |
Recommended Implements & Sizing Guide
Engineering recommendations for J I Case J.I. Case 731 based on its 56.43 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 | 6 ft (72 in)1.8 m | Medium Duty | Medium pasture clearing; rear slip-clutch recommended. |
Rotary TillerSeedbed Prep | 66 to 72 in165 - 180 cm | Medium Duty | Standard utility tiller; slip clutch protection required. |
Disc HarrowSecondary Tillage | 7 to 8 ft Tandem Disc2.1 - 2.4 m 对开双排耙 | Medium Duty | Field leveling and clod breaking behind plows. |
Hay BalerHay & Forage | Small Square Baler (14x18")小方捆打捆机 (36x46 cm) | Medium Duty | Classic 2-string baler for horse and small livestock hay. |
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 J I Case J.I. Case 731.
Estimated Continuous Field Runtime: 7.5 hrs
Approximately 7.5 hours of continuous field operation at ~75% rated power on a full tank (22 gal / 83.3 L).
Estimated 75% Load Fuel Burn~2.9 gal/hr (11.1 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
J I Case J.I. Case 731 Specification Unit Converter
Convert power, fluid capacities, and operating weights between metric and imperial standards for J I Case J.I. Case 731.
Converted Equivalents:
Horsepower (HP)56.4 hp
Kilowatts (kW)42.1 kW
Metric Horsepower (PS / CV)57.2 PS
Direct Competitor Comparison
Compare J.I. Case 731 against same-era industry alternatives in the same horsepower class.
Current Model
J I Case
J.I. Case 731
Engine Power:56.43 hp
42.1 kW
★ Baseline Reference
International HarvesterMarket Competitor
International Harvester 504
Engine Power:51.1
Production Years:1961 - 1968
Related models
J.I. Case 530
- Power:
- 45.9
- Production years:
- 1960 - 1969
J.I. Case 350
- Power:
- 46.7
- Production years:
- 1957 - 1957
J.I. Case 351
- Power:
- 46.7
- Production years:
- 1957 - 1957
J.I. Case 885
- Power:
- 47.3
- Production years:
- 1976 - 1980
J.I. Case 1190
- Power:
- 47.8
- Production years:
- 1980 - 1983