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J.I. Case 780B Construction King

J.I. Case 780B Construction King tractor
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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.
J.I. Case 780BConstruction Kingbackhoe loadertractorspecificationsenginetransmissiondimensionshydraulicsattachments
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Model780B

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 time:1.7s
Dump angle:49°
Lower time:4.7s
Raise time:6.6s
Bucket width:96 inches (243 cm)
Rollback time:2.6s
Breakout force:12500 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 Arc:180°
Backhoe type:J.I. Case Backhoe
Bucket force:13640 lbs (6187 kg)
Loading height:136 inches (345 cm)
Bucket Rotation:156°
Reach from pivot:263 inches (668 cm)
Transport height:158 inches (401 cm)
Dipperstick force:10970 lbs (4975 kg)
2-Foot flat digging depth:219 inches (556 cm)
Attachment overview:Front-end loader, Backhoe

J.I. Case Extendahoe Backhoe

Swing Arc:180°
Backhoe type:J.I. Case Extendahoe Backhoe
Bucket Rotation:151°
Transport height:157 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)

Transmission

Type:power shift
Gears:3 forward and reverse
Description:Three-speed power shift transmission with power shuttle and torque converter.

Backhoe & Loader

Dump angle:49 inches (124 cm)

Related Models

J.I. Case 780C Construction King

Model:780C

J.I. Case 780 Construction King

Model:780