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CATERPILLAR - DUMPERS


CATERPILLAR 773



TECHNICAL DATA AND PHOTOS



Class: dumper truck

Manufacturer: CATERPILLAR

Type: CAT 773

Years of production: 1970 - 1978

Layout: Front engine, rear wheel drive.


ENGINE

Model: Cat D346
Type: V-type, four stroke diesel engine.
Pressure-ratio controled turbocharger.
Intake air aftercooler.
Precombustion chanber fuel system with individual adjustment-free injection pumps and valves.
Dry-type air cleaner with primary and safety elements.
Flywheel power: 447 kW (600 hp) at 1900 rpm
Number of cylinders: 8
Displacement: 19.5 L (1,190 in3)
Bore: 137 mm (5.4 in)
Stroke: 165 mm (6.5 in)


FLUID CAPACITIES

Cooling system: 144 L (38 US gal)
Crankcase: 57 L (15 US gal)
Differential: 106 L (28 US gal)
Final drives (each side): 17 L (4.5 US gal)
Integral transmission, brake and hoist system: 208 L (55 US gal)
Steering system: 48 L (12.75 US gal)
Fuel tank: 680 L (180 US gal)


TRANSMISSION

Type: power shift

Three automatically selected speeds - torque divider drive, direct drive and overdrive - in each of three manually selected gear ranges for a total of nine forward speeds, three reverse.

Single-lever shift control.


FINAL DRIVE

Type: planetary
Axle: full floating
Planet bearings: double-row roller

Ratios:
Differential: 3.64:1
Planetary: 4.80:1
Total reduction: 17.48:1


STEERING

Separate system, fully hydraulic, with twin double acting cylinders and mechanical follow-up. Front suspension cylinders serve as kingpins.

Turning circle on front wheel track: 20.4 m (66 ft 10 in)
Vehicle clearance turning circle: 22.1 m (72 ft 6 in)
Steering angle (left or roght) 31


DUMP BODY CAPACITY

Capacity: 45 400 kg (50 tons)

Struck (SAE): 23.4 m3 (30.6 cubic yards)

Heaped (3:1): 28.7 m3 (37.5 cubic yards)
Heaped (2:1, SAE): 31.3 m3 (40.9 cubic yards)
Heaped (1:1): 38.7 m3 (50.6 cubic yards)


WEIGHTS

Operating weight, empty: 37 200 kg (82,000 lb)

Chassis with hoists: 27 900 kg (61,400 lb)
Dump body, empty: 9 300 kg (20,600 lb)

Weight disttribution, empty:
Front axle, 47%: 17 600 kg (38,900 lb)
Rear axle, 53%: 19 600 kg (43,100 lb)

Weight disttribution, loaded:
Based on 45 400 kg (100,000 lb).

Front axle, 33%: 27 500 kg (60,700 lb)
Rear axle, 67%: 55 000 kg (121,300 lb)

Total gross weight: 82 500 kg (182,000 lb)


TIRES

Number of tires: 6 (2 + 4)

Standard tires, front and dual rear:
21.00-35 (32 PR)

Optional tires, front and dual rear:
21.00-35 (32 PR) Extra tread
21.00-35 Radial steel cord
21.00-35 (36 PR)
21.00-35 (36 PR) Extra tread
24.00-35 (30 PR)
24.00-35 (30 PR) Extra tread


CAT 773 dumper truck
CAT 773 dumper truck.
Size of the photo: 680 x 420, 193 kB
Author of the photo: John Welsh
License : (CC BY-SA 2.0)
Changes: The image was extracted from the original photo.
The original photo is under the photo.


CATERPILLAR 773 dumper truck
CATERPILLAR 773 dumper truck.
Size of the photo: 952 x 539, 387 kB
Author of the photo: John Welsh
License : (CC BY-SA 2.0)


CAT 773 dumper truck
CAT 773 dumper truck.
Size of the photo: 1254 x 669, 527 kB
Author of the photo: John Welsh
License : (CC BY-SA 2.0)
Changes: The image was extracted from the original photo.
The original photo is under the photo.


CAT 992 wheel loader loading CAT 773 dumper truck
CAT 992 wheel loader loading CAT 773 dumper truck.
Size of the photo: 952 x 539, 387 kB
Author of the photo: John Welsh
License : (CC BY-SA 2.0)


CAT 992 wheel loader loading CAT 773 dumper truck
CAT 992 wheel loader loading CAT 773 dumper truck.
Size of the photo: 2272 x 1704, 3.50 MB
Author of the photo: John Welsh
License : (CC BY-SA 2.0)


CATERPILLAR 773 dumper truck unloading material
CATERPILLAR 773 dumper truck unloading material.
Size of the photo: 960 x 653, 88.6 kB
Author of the photo: John Welsh
License : (CC BY-SA 2.0)




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