J.I. Case 770: all source data
All 78 values recorded for this model, as the source lists them and in its units. The spec sheet shows the same data checked, typed and converted.
Overview
Production| Manufacturer | J.I. Case |
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| (no label) | Built in Racine, Wisconsin, USA |
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| Total built | 1,690 |
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| (no label) | Original price was $7,600 in 1973 |
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Engine| (no label) | J.I. Case 4.4L 4-cyl diesel |
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| (no label) | J.I. Case 4.1L 4-cyl gasoline |
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| Fuel tank | 50 gal | 189.2 L |
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Transmission| (no label) | 8-speed unsynchronized gear |
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| (no label) | 12-speed partial power shift |
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Power| Drawbar (claimed) | 49 hp | 36.5 kW |
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| PTO (claimed) | 56 hp | 41.8 kW |
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| Drawbar (tested) | 56.85 hp | 42.4 kW |
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| PTO (tested) | 64.56 hp | 48.1 kW |
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Mechanical| (no label) | Two-wheel drive |
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| (no label) | Power steering |
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| (no label) | Differential hydraulic dry disc brakes |
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| (no label) | Open operator station. Cab optional. |
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Hydraulics| Type | open center |
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| Pump flow | 16 gpm | 60.6 lpm |
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| Total flow | 24 gpm | 90.8 lpm |
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| Steering flow | 8 gpm | 30.3 lpm |
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Pto| Rear PTO | independent |
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| Rear PTO Type | 540 (1.375) |
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| Rear PTO Type | 540/1000 (1.375) |
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| Engine RPM | 540@1900 |
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| Engine RPM | 1000@1900 |
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Dimensions| Wide-front Wheelbase (Wide-front) | 101 inches | 256 cm |
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| Tricycle Wheelbase (Tricycle) | 94 inches | 238 cm |
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| Weight | 9,220 lbs | 4182 kg |
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| Front tire | 7.5L-15 |
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| Rear tire | 16.9-34 |
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Engine
Engine options| (no label) | J.I. Case 4.4L 4-cyl diesel |
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| (no label) | J.I. Case 4.1L 4-cyl gasoline |
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Engine detail| (no label) | J.I. Case |
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| (no label) | diesel |
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| (no label) | 4-cylinder |
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| (no label) | liquid-cooled |
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| (no label) | Engine RPMs increased from 1900 to 2000 starting at serial number 8675001, creating an increase of about 8 horsepower. |
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| Displacement | 267 ci | 4.4 L |
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| Bore/Stroke | 4.125x5.00 inches | 105 x 127 mm |
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| Air cleaner | paper element with pre-cleaner |
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| Compression | 16.5:1 |
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| Rated RPM | 1900 (early) |
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| Rated RPM | 2000 (late) |
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| Starter volts | 12 |
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| (no label) | J.I. Case |
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| (no label) | gasoline |
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| (no label) | 4-cylinder |
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| (no label) | liquid-cooled |
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| Displacement | 251 ci | 4.1 L |
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| Bore/Stroke | 4.00x5.00 inches | 102 x 127 mm |
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| Air cleaner | paper element with precleaner |
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| Compression | 7.5:1 |
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| Rated RPM | 1900 |
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| Starter volts | 12 |
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| Coolant capacity (Coolant) | 28 qts | 26.5 L |
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Transmission
Transmission options| (no label) | 8-speed unsynchronized gear |
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| (no label) | 12-speed partial power shift |
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Transmission| Type | unsynchronized gear |
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| Gears | 8 forward and 2 reverse |
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| Clutch | 304.8mm dry disc |
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| Transmission | Range Power Shift |
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| Type | partial power shift |
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| Gears | 12 forward and 4 reverse |
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| Clutch | hydraulic wet discs |
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| (no label) | Four gears each with reverse and a three-speed forward powershift. |
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Dimensions
Tires| Ag front | 7.5L-15 |
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| Ag rear | 16.9-34 |
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Dimensions| Wide-front Wheelbase (Wide-front) | 101 inches | 256 cm |
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| Tricycle Wheelbase (Tricycle) | 94 inches | 238 cm |
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| Length | 153 inches | 388 cm |
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| Height (hood) | 67 inches | 170 cm |
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| Operating weight | 9,220 lbs | 4182 kg |
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| Ballasted weight | 10,950 lbs | 4966 kg |
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| Ground clearance | 15 inches | 38 cm |
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| Front tread | 60 to 88 inches | 152 to 223 cm |
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| Rear tread | 60 to 88 inches | 152 to 223 cm |
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