| Manufacturer |
Case |
| Price |
7,600(USD) |
| Model |
770 |
| Equipment Type |
- |
| Factory |
Racine, Wisconsin, USA |
NEBRASKA TRACTOR TEST 1032 2
| Description |
Gasoline 12-speed 2WD November 10 - 22, 1969 Link: Nebraska Tractor Test 1032 file PTO performance Drawbar performance Gear 2-High used for power test. Gear 2-Low used for pull test |
| Power at rated engine speed |
53.53hp / 39.9kW |
| Fuel use |
5.2gal/hour / 19.7l/hour |
| Max power |
46.30hp / 34.5kW |
| Max pull |
7,103lbs / 3221kg |
NEBRASKA TRACTOR TEST 1033 2
| Description |
Diesel 8-speed 2WD November 11 - 22, 1969 Link: Nebraska Tractor Test 1033 file PTO performance Drawbar performance Gear 4-Low used for power test. Gear 2-Low used for pull test |
| Power at rated engine speed |
56.36hp / 42.0kW |
| Fuel use |
3.7gal/hour / 14.0l/hour |
| Max power |
49.18hp / 36.7kW |
| Max pull |
7,623lbs / 3457kg |
NEBRASKA TRACTOR TEST 1058 2
| Description |
Diesel 12-speed 2WD October 28 - November 7, 1970 Link: Nebraska Tractor Test 1058 file PTO performance Drawbar performance Gear 2-High used for power test. Gear 1-Med used for pull test |
| Power at rated engine speed |
56.77hp / 42.3kW |
| Fuel use |
3.7gal/hour / 14.0l/hour |
| Max power |
50.36hp / 37.6kW |
| Max pull |
7,627lbs / 3459kg |
NEBRASKA TRACTOR TEST 1061 2
| Description |
Gasoline 8-speed 2WD November 6 - 19, 1970 Link: Nebraska Tractor Test 1061 file PTO performance Drawbar performance Gear 4-Low used for power test. Gear 2-Low used for pull test |
| Power at rated engine speed |
56.32hp / 42.0kW |
| Fuel use |
5.0gal/hour / 18.9l/hour |
| Max power |
49.14hp / 36.6kW |
| Max pull |
7,474lbs / 3390kg |
NEBRASKA TRACTOR TEST 1088 2
| Description |
Diesel 8-speed 2WD November 13 - 23, 1971 Link: Nebraska Tractor Test 1088 file PTO performance Drawbar performance Gear 4-Low used for power test. Gear 1-Low used for pull test |
| Power at rated engine speed |
63.90hp / 47.7kW |
| Fuel use |
4.3gal/hour / 16.3l/hour |
| Power at rated PTO speed |
62.85hp / 46.9kW |
| Max power |
56.85hp / 42.4kW |
| Max pull |
8,853lbs / 4015kg |
NEBRASKA TRACTOR TEST 1089 2
| Description |
Diesel 12-speed 2WD November 15 - 24, 1971 Link: Nebraska Tractor Test 1089 file PTO performance Drawbar performance Gear 3-Low used for power test Gear 1-Med used for pull test |
| Power at rated engine speed |
64.56hp / 48.1kW |
| Fuel use |
4.4gal/hour / 16.7l/hour |
| Power at rated PTO speed |
61.93hp / 46.2kW |
| Max power |
55.95hp / 41.7kW |
| Max pull |
8,927lbs / 4049kg |
J.I. CASE 770 POWER
| Drawbar (claimed) |
49hp / 36.5kW |
| PTO (claimed) |
56hp / 41.8kW |
| Drawbar (tested) |
56.85hp / 42.4kW |
| PTO (tested) |
64.56hp / 48.1kW |
ENGINES OVERVIEW
The Case 770 tractor offers a choice between a 4.4L diesel engine and a 4.1L gasoline engine, providing flexibility for different fuel preferences and operating conditions. The diesel variant typically offers better fuel efficiency and torque at lower RPMs, making it ideal for heavy-duty applications, while the gasoline option may provide easier starting and lower initial costs. Considerations include the intended usage—diesel for farming and tough tasks, gasoline for lighter activities—along with maintenance and operating expenses associated with each engine type.
| Description |
J.I. Case 4.4L 4-cyl diesel J.I. Case 4.1L 4-cyl gasoline |
ENGINE DETAIL 1
The Case 770 tractor features a robust 4-cylinder diesel engine with a total displacement of 267ci (4.4L) and a compression ratio of 16.5:1, indicating high efficiency and power output. The RPM increase from 1900 to 2000 for models starting at serial number 8675001 enhances performance by approximately 8 horsepower, making it suitable for demanding agricultural tasks. However, the transition to higher RPMs may impact fuel consumption and increase wear on engine components, necessitating regular maintenance and careful operational practices to ensure longevity.
| Description |
J.I. Case diesel 4-cylinder liquid-cooled Engine RPMs increased from 1900 to 2000 starting at serial number 8675001, creating an increase of about 8 horsepower |
| Displacement |
267ci / 4.4L |
| Bore/Stroke |
4.125x5.00inches / 105x 127 mm |
| Air cleaner |
paper element with pre-cleaner |
| Compression |
16.5:1 |
| Rated RPM |
1900 (early)/2000 (late) |
| Starter volts |
12 |
ENGINE DETAIL 2
The Case 770 tractor features a gasoline-powered 4-cylinder engine with a displacement of 4.1L, delivering reliable power at a rated RPM of 1900, suitable for various agricultural applications. Its low compression ratio of 7.5:1 aids in fuel efficiency but may limit high-power performance compared to diesel engines. The tractor's air cleaner with a paper element and precleaner enhances engine longevity by reducing dirt intake, although maintenance is essential for optimal performance.
| Description |
J.I. Case gasoline 4-cylinder liquid-cooled |
| Displacement |
251ci / 4.1L |
| Bore/Stroke |
4.00x5.00inches / 102x 127 mm |
| Air cleaner |
paper element with precleaner |
| Compression |
7.5:1 |
| Rated RPM |
1900 |
| Starter volts |
12 |
| Coolant capacity |
28qts / 26.5L |
J.I. CASE 770 ENGINES
The Case 770 tractor offers a robust 4.4L diesel engine, providing better torque and fuel efficiency compared to the 4.1L gasoline variant, suitable for heavy-duty applications. With a substantial 50-gallon fuel tank, operators can maximize productivity during extended tasks without frequent refueling. However, maintenance and fuel availability may pose challenges depending on the chosen engine type, particularly in rural settings for gasoline models.
| Description |
J.I. Case 4.4L 4-cyl diesel J.I. Case 4.1L 4-cyl gasoline |
| Fuel tank |
50gal / 189.3L |
TRANSMISSIONS OVERVIEW
The Case 770 tractor features an 8-speed unsynchronized gear system, which can be challenging for operators inexperienced with manual gear shifting, potentially leading to increased wear. However, the 12-speed partial power shift allows for smoother transitions and better power management during various agricultural tasks, enhancing productivity. Ideal for mixed operations, the gear combination provides versatility but may require more operator training to maximize efficiency.
| Description |
8-speed unsynchronized gear/12-speed partial power shift |
TRANSMISSION 1
The Case 770 tractor features an unsynchronized 8-speed forward and 2-speed reverse gear system, which may pose shifting difficulties, especially under load. The 304.8mm dry disc clutch offers robust engagement and disengagement but requires precise operation to prevent premature wear. This setup is advantageous for applications involving moderate towing or fieldwork but may challenge new operators due to the manual gear-shifting nature.
| Type |
unsynchronized gear |
| Gears |
8 forward and 2 reverse |
| Clutch |
304.8mm dry disc |
TRANSMISSION 2
The Case 770 tractor features a partial power shift transmission with 12 forward and 4 reverse gears, allowing for smooth power transitions under load, optimizing operational efficiency. The hydraulic wet disc clutch enhances durability and reduces slippage, providing consistent performance during demanding tasks. However, operators should be aware of potential complexities in maintenance due to the advanced transmission system, especially in scenarios requiring rapid speed adjustments.
| Transmission |
Range Power Shift |
| Type |
partial power shift |
| Gears |
12 forward and 4 reverse |
| Clutch |
hydraulic wet discs |
| Description |
Four gears each with reverse and a three-speed forward powershift. |
MECHANICAL
The Case 770 tractor features a 4x2 2WD configuration, optimizing it for light-duty applications on flat terrain where traction demands are lower, enhancing fuel efficiency. Its power-assisted steering facilitates ease of maneuvering, while the differential hydraulic dry disc brakes provide reliable stopping power under varying load conditions. The 8-speed unsynchronized transmission suits straightforward operations, though for more complex tasks, the optional 12-speed partial power shift can enable smoother shifts and improved productivity.
| Chassis |
4x2 2WD |
| Steering |
power |
| Brakes |
differential hydraulic dry disc |
| Cab |
Open operator station. Cab optional. |
| Transmissions |
8-speed unsynchronized gear/12-speed partial power shift |
HYDRAULICS
| Pump flow |
16gpm / 60.6lpm |
| Total flow |
24gpm / 90.8lpm |
| Steering flow |
8 gpm /30.3 lpm |
TRACTOR HITCH
POWER TAKE-OFF (PTO)
| Rear PTO |
independent |
| Rear RPM |
540 (1.375)/540/1000 (1.375) |
| Engine RPM |
540@1900 / 1000@1900 |
J.I. CASE 770 TIRES
The Case 770 tractor features a front tire size of 7.5L-15 and rear tires of 16.9-34, providing a balanced load distribution and stability for various agricultural tasks. The larger rear tires enhance traction and allow for better performance in soil cultivation and towing heavy implements, making it suitable for both fieldwork and transport duties. However, the compatibility of tire sizes with specific attachments and soil conditions should be considered to optimize performance and reduce wear.
| Ag front |
7.5L-15 |
| Ag rear |
16.9-34 |
DIMENSIONS
| Wide-front Wheelbase |
101inches / 256cm |
| Tricycle Wheelbase |
94inches / 238cm |
| Length |
153inches / 388cm |
| Height (hood) |
67inches / 170cm |
| Operating weight |
9,220lbs / 4182kg |
| Ballasted weight |
10,950lbs / 4966kg |
| Ground clearance |
15inches / 38cm |
| Front tread |
60 to 88inches / 152to 223 cm |
| Rear tread |
60 to 88inches / 152to 223 cm |
DIMENSIONS & TIRES
The Case 770 tractor features a wide-front wheelbase of 101 inches, providing enhanced stability and maneuverability on uneven terrain, ideal for applications such as row cropping. Weighing 9,220 lbs, it offers a solid ballast for traction, but its weight might limit mobility on softer ground. The tricycle wheelbase of 94 inches reduces turning radius, beneficial for tight farming spaces, though it may compromise stability compared to wider variants.
| Wide-front Wheelbase |
101inches / 256cm |
| Tricycle Wheelbase |
94inches / 238cm |
| Weight |
9,220lbs / 4182kg |
| Front tire |
7.5L-15 |
| Rear tire |
16.9-34 |
770 SERIAL NUMBERS
| 1969 |
8356251 |
| 1970 |
8650001 |
| 1971 |
8674001 |
| 1972 |
8691801 |
