Caterpillar 770 Dump Truck

Approximate Weights – Flat Floor

Chassis 35 lbs (16 kg)

Articulating/Rigid

Articulating/Rigid Rigid

Body Hoists

Body Lower Time – Float 12.5 seconds
Body Power Down – High Idle 12.5 seconds
Body Raise Time – High Idle 9.5 seconds
Pump Flow – High Idle 136 gpm (515 lpm)
Relief Valve Setting – Raise 2500 psi

Brakes

Brake Surface – Rear 6,235 cu in (102,174 cu cm)
Standards 2.74:1

Capacity – Flat Floor – 100% Fill Factor

Heaped 2:1 (SAE) 33 cu yd (25 cu m)

Dimensions

Centerline Front Tire Width 10 ft (3 m)
Dump Ground Clearance 2 ft (0 m)
Dump Height 27 ft (8 m)
Front Canopy Height 14 ft (4 m)
Ground Clearance 2 ft (1 m)
Inside Body Length 18 ft (6 m)
Loading Height – Empty 10 ft (3 m)
Operating Width 16 ft (5 m)
Outside Body Width 157,000 ft (47,854 m)
Overall Height 10 ft (3 m)
Overall Height – Body Raised 27 ft (8 m)
Overall Length 29 ft (9 m)
Overall Width 16 ft (5 m)
Wheel Base 13 ft (4 m)
Wheelbase 13 ft (4 m)

DRIVE SYSTEM

Drive Config 4×2

Dump

Load Capacity – heaped 33 cu yd (25 cu m)
Load Capacity – Struck 22 cu yd (17 cu m)
Lower Time 12.5 seconds
Raise Time 9.5 seconds

Engine

Aspiration Turbocharged
Bore 5 in (14 cm)
Displacement 928 cu in (15,201 cu cm)
Engine Model Cat C15 ACERT
Gross Power 511 hp (381 kw)
Gross Power – SAE J1995 511 hp (381 kw)
Make Cat
Max Torque 1,711 lbs ft (2,320 nm)
Model C15 ACERT
Net Power 476 hp (355 kw)
Net Power – 80/1269/EEC 476 hp (355 kw)
Net Power – SAE J1349 476 hp (355 kw)
Number of Cylinders 6
Peak Torque 1,711 lbs ft (2,320 nm)
Power Measured @ 1800 rpm
Stroke 7 in (17 cm)
Torque Measured @ Turbocharged rpm
Torque Rise 12.5

Final Drives

Planetary Ratio 4.80:1
Total Reduction Ratio 13.15:1

Operating Specifications

Alternator Supplied Amperage Power Shift
Body Capacity – SAE 2:1 33 cu yd (25 cu m)
Brake/Hoist System Fluid Capacity 73 gal (276 l)
Cooling System Fluid Capacity 30 gal (114 l)
Diff and Final Drive Fluid Capacity 42 gal (159 l)
Engine Oil Capacity 56 gal (212 l)
Fuel Capacity 140 gal (530 l)
Maximum Capacity 80,000 lbs (36,287 kg)
Nominal Payload Capacity 22 lbs (10 kg)
Nominal Payload Class (100%) 80,000 lbs (36,287 kg)
Steering System Fluid Capacity 15 gal (57 l)
Tire Size 18.00R33(E4)
Top Speed – Loaded 47 mph (75 kph)

Service Refill Capacities

Brake / Hoist / Fan Hydraulic Tank 35 gal (132 l)
Brake/Hoist Hydraulic Tank 80,000 gal (302,800 l)
Cooling System 30 gal (114 l)
Crankcase 9 gal (34 l)
Fuel Tank 140 gal (530 l)
Steering System – Including Tank 15 gal (57 l)
Steering Tank 9 gal (34 l)
Torque Converter – Transmission Sump 53,380 gal (202,043 l)

Steering System

Steer Angle 40 degrees
Steering Standards ISO 5010:1992
Turning Circle – Clearance Diameter ISO 3450: 1996 ft

Suspension

Effective Cylinder Stroke – Rear 6 in (15 cm)

Tires

Standard Tire 18.00R33 (E4)
Standard Tires 216

Transmission

Forward – 1 8 mph (12 kph)
Forward – 2 10 mph (17 kph)
Forward – 3 14 mph (23 kph)
Forward – 4 19 mph (30 kph)
Forward – 5 25 mph (41 kph)
Forward – 6 34 mph (55 kph)
Forward – 7 47 mph (75 kph)
Max Speed 47 mph (75 kph)
Number of Gears – Forward 7
Number of Gears – Reverse 1
Reverse 10 mph (16 kph)
Transmission Type Power Shift

Weights

Body Weight 22,110 lbs (10,029 kg)
Chassis Weight 53,380 lbs (24,213 kg)
Empty Weight 75,490 lbs (34,242 kg)
Front Axle – Empty 48%
Front Axle – Loaded 34%
Loaded Weight 157,000 lbs (71,214 kg)
Operating Weight 157,000 lbs (71,214 kg)
Operating Weight – Loaded ISO 5010:1992 lbs
Rear Axle – Empty 52%
Rear Axle – Loaded 66%
Weight Distribution Front – empty 48%
Weight Distribution Front – loaded 34%
Weight Distribution Rear – empty 52%
Weight Distribution Rear – loaded 66%
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