Case industrial tractors

J.I. Case 780B Construction King

The J.I. Case 780B Construction King is a backhoe loader tractor produced from 1981 to 1985. It features a 5.5L 4-cylinder liquid-cooled diesel engine producing 120 hp gross and 111 hp net. The tractor has a 3-speed power shift transmission with power shuttle and torque converter, two-wheel drive with outboard planetary final drives, and power steering. It offers a four-post ROPS canopy with an optional cab with air-conditioning. The hydraulic system is open center with a total flow of 55.5 gpm. Dimensions include an 87-inch wheelbase, 300-inch length, and weights ranging from 21083 to 22908 pounds depending on configuration. The tractor is equipped with industrial tires sized 14x17.5 front and 18.4x24 rear. Attachments include a front-end loader with a 6840 lbs lift capacity and a J.I. Case backhoe or Extendahoe backhoe with various digging depths and forces.

Power-

Founded-

Model780B

J.I. Case 780B Construction King tractor

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Technical Specifications

Detailed specifications and technical data for J.I. Case 780B Construction King

Power

Engine (net)	111 hp (82.8 kW)
Engine (gross)	120 hp (89.5 kW)

Tires

Rear tire	18.4x24
Front tire	14x17.5
Industrial rear	18.4x24
Industrial front	14x17.5

Engine

Type	diesel
Model	J.I. Case A336BDT
Torque	333 lb-ft (451.5 Nm)
Cooling	liquid-cooled
Starter	electric
Cylinders	4-cylinder
Rated RPM	2200
Torque RPM	1500
Air cleaner	dry
Bore/Stroke	4.625x5.00 inches (117 x 127 mm)
Compression	15.8:1
Fuel system	direct injevtion
Power (net)	111 hp (82.8 kW)
Displacement	336 ci (5.5 L)
Oil capacity	12 qts (11.4 L)
Power (gross)	120 hp (89.5 kW)
Starter volts	24
Coolant capacity	36 qts (34.1 L)

Height

Cab	115 inches (292 cm)
Backhoe	158 inches (401 cm)
Exhaust	127 inches (322 cm)
Steering wheel	85 inches (215 cm)

Capacity

Fuel	33 gal (124.9 L)
Hydraulic system	18.9 gal (71.5 L)

Dimensions

Width	99 inches (251 cm)
Length	300 inches (762 cm)
Wheelbase	87 inches (220 cm)
Rear tread	71 inches (180 cm)
Front tread	78 inches (198 cm)
Weight ROPS with standard backhoe	21083 lbs (9563 kg)
Weight Cab with air-conditioning, 4-in-1 bucket, and Extendahoe	22908 lbs (10391 kg)

Electrical

Ground	negative
Batteries	2
Battery CCA	600
Battery volts	12
Charging amps	40
Charging system	alternator

Hydraulics

Type	open center
Capacity	18.9 gal (71.5 L)
Total flow	55.5 gpm (210.1 lpm)
Pump flow loader	29.5 gpm (111.7 lpm)
Pump flow backhoe	26 gpm (98.4 lpm)

Mechanical

ROPS	Four-post ROPS canopy. Cab optional with available air-conditioning.
Drive	Two-wheel drive
Final drives	outboard planetary
Power steering	Yes

Production

Type	Backhoe loader tractor
Manufacturer	J.I. Case
Years produced	1981 - 1985

Attachments

Loader	Dump time1.7s Dump angle49° Lower time4.7s Raise time6.6s Bucket width96 inches (243 cm) Rollback time2.6s Breakout force12500 lbs (5670 kg) Reach (dumped)32 inches (81 cm) Reach (ground)58 inches (147 cm) Height (at pin)138 inches (350 cm) Clearance (dumped)108 inches (274 cm) Rollback (ground line)58° Lift capacity (full at pin)6840 lbs (3102 kg)
J.I. Case Backhoe	Swing Arc180° Backhoe typeJ.I. Case Backhoe Bucket force13640 lbs (6187 kg) Loading height136 inches (345 cm) Bucket Rotation156° Reach from pivot263 inches (668 cm) Transport height158 inches (401 cm) Dipperstick force10970 lbs (4975 kg) 2-Foot flat digging depth219 inches (556 cm)
Attachment overview	Front-end loader, Backhoe
J.I. Case Extendahoe Backhoe	Swing Arc180° Backhoe typeJ.I. Case Extendahoe Backhoe Bucket Rotation151° Transport height157 inches (398 cm) Bucket force (extended stick)13742 lbs (6233 kg) Bucket force (retracted stick)13742 lbs (6233 kg) Digging depth (extended stick)264 inches (670 cm) Digging depth (retracted stick)219 inches (556 cm) Loading height (extended stick)174 inches (441 cm) Loading height (retracted stick)149 inches (378 cm) Reach from pivot (extended stick)306 inches (777 cm) Dipperstick force (extended stick)8138 lbs (3691 kg) Reach from pivot (retracted stick)262 inches (665 cm) Dipperstick force (retracted stick)11095 lbs (5032 kg)