Tractor · 1969Unverified
J.I. Case 770
J.I. Case 770 · 54 hp. Reference specifications; pending source verification.
Provisional listing — the headline figure is shown; full specifications are auto-generated and pending verification against published sources.
Rated power
54 hp
Max power
34.5 kW
Weight
4182 kg
Hover a source tag to verify
Overview
ManufacturerJ.I. CaseReference
Built in Racine, Wisconsin, USAReference
Total built1,690Reference
Original price was $7,600 in 1973Reference
Two-wheel driveReference
Power steeringReference
Differential hydraulic dry disc brakesReference
Open operator station. Cab optional.Reference
Engine
J.I. Case 4.4L 4-cyl dieselReference
J.I. Case 4.1L 4-cyl gasolineReference
Fuel tank189.2 LReference
Drawbar (claimed)36.5 kWReference
Drawbar (tested)42.4 kWReference
J.I. CaseReference
dieselReference
4-cylinderReference
liquid-cooledReference
Engine RPMs increased from 1900 to 2000 starting at serial number 8675001, creating an increase of about 8 horsepower.Reference
Displacement4.4 LReference
Bore/Stroke105 x 127 mmReference
Air cleanerpaper element with pre-cleanerReference
Compression16.5:1Reference
Rated RPM1900 (early)Reference
Rated RPM2000 (late)Reference
Starter volts12Reference
gasolineReference
Displacement4.1 LReference
Bore/Stroke102 x 127 mmReference
Air cleanerpaper element with precleanerReference
Compression7.5:1Reference
Rated RPM1900Reference
Coolant capacity26.5 LReference
Power at rated engine speed39.9 kWReference
Max power34.5 kWReference
Power at rated engine speed42.0 kWReference
Max power36.7 kWReference
Power at rated engine speed42.3 kWReference
Max power37.6 kWReference
Power at rated engine speed42.0 kWReference
Max power36.6 kWReference
Power at rated engine speed47.7 kWReference
Max power42.4 kWReference
Power at rated engine speed48.1 kWReference
Max power41.7 kWReference
Transmission
8-speed unsynchronized gearReference
12-speed partial power shiftReference
Typeunsynchronized gearReference
Gears8 forward and 2 reverseReference
Clutch304.8mm dry discReference
TransmissionRange Power ShiftReference
Typepartial power shiftReference
Gears12 forward and 4 reverseReference
Clutchhydraulic wet discsReference
Four gears each with reverse and a three-speed forward powershift.Reference
PTO & Hydraulics
PTO (claimed)41.8 kWReference
PTO (tested)48.1 kWReference
Typeopen centerReference
Pump flow60.6 lpmReference
Total flow90.8 lpmReference
Steering flow30.3 lpmReference
Rear TypeIIReference
Rear PTOindependentReference
Rear PTO Type540 (1.375)Reference
Rear PTO Type540/1000 (1.375)Reference
Engine RPM540@1900Reference
Engine RPM1000@1900Reference
Power at rated PTO speed46.9 kWReference
Power at rated PTO speed46.2 kWReference
Dimensions
Wide-front Wheelbase256 cmReference
Tricycle Wheelbase238 cmReference
Weight4182 kgReference
Front tire7.5L-15Reference
Rear tire16.9-34Reference
Ag front7.5L-15Reference
Ag rear16.9-34Reference
Length388 cmReference
Height (hood)170 cmReference
Operating weight4182 kgReference
Ballasted weight4966 kgReference
Ground clearance38 cmReference
Front tread152 to 223 cmReference
Rear tread152 to 223 cmReference
770 Serial Numbers
19698356251Reference
19708650001Reference
19718674001Reference
19728691801Reference
FAQ: How to read a serial number table.Reference
Test results
NTTL 1032: gasoline 12-speed 2WDReference
NTTL 1033: diesel 8-speed 2WDReference
NTTL 1058: diesel 12-speed 2WDReference
NTTL 1061: gasoline 8-speed 2WDReference
NTTL 1088: diesel 8-speed 2WDReference
NTTL 1089: diesel 12-speed 2WDReference
Gasoline 12-speed 2WDNovember 10 - 22, 1969Link: Nebraska Tractor Test 1032 fileReference
PTO performanceReference
Fuel use18.9 l/hourReference
Drawbar performanceReference
Fuel use19.7 l/hourReference
Gear 2-High used for power test.Reference
Max pull3221 kgReference
Gear 2-Low used for pull test.Reference
Diesel 8-speed 2WDNovember 11 - 22, 1969Link: Nebraska Tractor Test 1033 fileReference
Fuel use13.6 l/hourReference
Fuel use14.0 l/hourReference
Gear 4-Low used for power test.Reference
Max pull3457 kgReference
Diesel 12-speed 2WDOctober 28 - November 7, 1970Link: Nebraska Tractor Test 1058 fileReference
Fuel use14.4 l/hourReference
Max pull3459 kgReference
Gear 1-Med used for pull test.Reference
Gasoline 8-speed 2WDNovember 6 - 19, 1970Link: Nebraska Tractor Test 1061 fileReference
Max pull3390 kgReference
Diesel 8-speed 2WDNovember 13 - 23, 1971Link: Nebraska Tractor Test 1088 fileReference
Fuel use16.3 l/hourReference
Fuel use15.5 l/hourReference
Max pull4015 kgReference
Gear 1-Low used for pull test.Reference
Diesel 12-speed 2WDNovember 15 - 24, 1971Link: Nebraska Tractor Test 1089 fileReference
Fuel use16.7 l/hourReference
Fuel use15.9 l/hourReference
Gear 3-Low used for power test.Reference
Max pull4049 kgReference
Values normalized to UK metric units. Every figure is traced to at least one source; verified specs are cross-checked against two or more.