Introduction
J.I. Case 770 Agricultural Tractor
The J.I. Case 770 is a two-wheel-drive agricultural tractor manufactured between 1969 and 1972 in Racine, Wisconsin. Positioned as a mid-range workhorse of its era, the model provides 62 horsepower and was designed for versatile field operations.
Engine and Cooling
The tractor is powered by a 251 cubic-inch (4.1 L) liquid-cooled 4-cylinder gasoline engine. It operates at a rated speed of 1900 RPM and features a 7.5:1 compression ratio. Air intake is managed by a paper element air cleaner equipped with a precleaner to ensure longevity in dusty field conditions.
Transmission and Drivetrain
Two transmission configurations were offered: an 8-speed unsynchronized gear system with 2 reverse gears, or a 12-speed partial power shift transmission featuring a hydraulic wet disc clutch. These options allowed operators to select appropriate gear ratios for varying load requirements.
Hydraulics and PTO
The hydraulic system utilizes an open-center design, providing a total flow of 24 gpm (90.8 lpm), with 16 gpm allocated to the pump and 8 gpm dedicated to power steering. The independent rear PTO supports both 540 and 1000 RPM speeds at 1900 engine RPM, facilitating the operation of diverse implements.
Dimensions and Chassis
The machine features a robust build with an operating weight of 9,220 lbs, which can be increased to 10,950 lbs with ballast. Available with a tricycle or wide-front wheelbase, the tractor provides a ground clearance of 15 inches. It is equipped with 7.5L-15 front tires and 16.9-34 rear tires.
Conclusion
The J.I. Case 770 is a mechanically straightforward tractor suited for general farming tasks, balancing manual gear control with optional powershift capabilities. Its design prioritizes accessibility and durability, making it a representative example of American tractor engineering from the early 1970s.
Production Information of J.I. Case, 770
- Original price was $7,600 in 1973
- Built in Racine, Wisconsin, USA
| Manufacturer | J.I. Case |
|---|---|
| Total built | 1,690 |
Dimension and Tires Information of J.I. Case, 770
| Ground clearance | 15 inches [38 cm] |
|---|---|
| Wide-front Wheelbase | 101 inches [256 cm] |
| Operating weight | 9,220 lbs [4182 kg] |
| Height (hood) | 67 inches [170 cm] |
| Tricycle Wheelbase | 94 inches [238 cm] |
| Front tread | 60 to 88 inches [152 to 223 cm] |
| Ballasted weight | 10,950 lbs [4966 kg] |
| Length | 153 inches [388 cm] |
| Rear tread | 60 to 88 inches [152 to 223 cm] |
| Ag front | 7.5L-15 |
|---|---|
| Ag rear | 16.9-34 |
Engine Specifications of J.I. Case, 770
- J.I. Case
- Liquid-cooled
- Gasoline
- 4-cylinder
| Coolant capacity | 28 qts [26.5 L] |
|---|---|
| Displacement | 251 ci [4.1 L] |
| Compression | 7.5:1 |
| Bore/Stroke | 4.00x5.00 inches [102 x 127 mm] |
| Starter volts | 12 |
| Starter volts | 12 |
| Rated RPM | 1900 |
| Air cleaner | Paper element with precleaner |
Transmission Information of J.I. Case, 770
Transmission variants 1
| Type | Unsynchronized gear |
|---|---|
| Gears | 8 forward and 2 reverse |
| Clutch | 304.8mm dry disc |
Transmission variants 2
- Four gears each with reverse and a three-speed forward powershift.
| Transmission | Range Power Shift |
|---|---|
| Clutch | Hydraulic wet discs |
| Type | Partial power shift |
| Gears | 12 forward and 4 reverse |
- 8-speed unsynchronized gear
- 12-speed partial power shift
Mechanical Specs of J.I. Case, 770
- Two-wheel drive
- Open operator station. Cab optional.
- Power steering
- Differential hydraulic dry disc brakes
Power Information of J.I. Case, 770
| Rear PTO | Independent |
|---|---|
| Rear PTO(optional) | 1000@1900 |
| Engine RPM | 540@1900 |
| Rear PTO Type | 540 (1.375) |
| Rear PTO Type(optional) | 540/1000 (1.375) |
Hydraulics Specifications of J.I. Case, 770
| Type | Open center |
|---|---|
| Steering flow | 8 gpm [30.3 lpm] |
| Pump flow | 16 gpm [60.6 lpm] |
| Total flow | 24 gpm [90.8 lpm] |
Three-Point Hitch of J.I. Case, 770
| Rear Type | II |
|---|
Where it sits
Its power puts it in the 66th percentile of 1960s models in our database (709 machines).
Frequently asked questions
How much horsepower does the J.I. Case 770 have?
The J.I. Case 770 delivers 62 hp[P] HP.
What years was the J.I. Case 770 produced?
The J.I. Case 770 was produced in 1969-1972.
What engine does the J.I. Case 770 have?
The J.I. Case 770 is powered by a Gasoline, 4-cylinder engine.
What transmission does the J.I. Case 770 use?
The J.I. Case 770 uses a Unsynchronized gear transmission.
How much does the J.I. Case 770 weigh?
The J.I. Case 770 weighs 9,220 lbs [4182 kg].
Is the J.I. Case 770 4WD?
The J.I. Case 770 is available in 2WD.