CAT 777G (Tier 2) Haul Truck

Engine Details

Cylinders 12
Net Torque 3899 lb ft (5286.4 Nm)
Displacement 1959 cu in (32.2 L)
Bore 5.7 in (144.8 mm)
Stroke 6.4 in (162.6 mm)
Net Power – Iso 9249 945 hp (704.7 kw)
Net Power – Sae J1349 945 hp (704.7 kw)
Net Power – 80/1269/Eec 945 hp (704.7 kw)
Gross Power – Sae J1995 1025 hp (764.4 kw)
Engine Model Cat C32 ACERT
Engine Power – Iso 14396 1012 hp (754.7 kw)
Peak Torque – Speed 1200 rpm
Engine Speed 1800 rpm

Transmission

Reverse 7.7 mile/h
Forward – 1 6.8 mph (11 km/h)
Forward – 2 9.2 mph (14.9 km/h)
Forward – 3 12.5 mph (20.2 km/h)
Forward – 4 16.9 mph (27.2 km/h)
Forward – 5 22.9 mph (36.9 km/h)
Forward – 6 30.7 mph (49.5 km/h)
Forward – 7 41.7 mph (67.2 km/h)

Steering

Steering Standards SAE J1511 FEB94 ISO 5010:1992
Steer Angle 30.5 degrees
Turning Diameter – Front 83 ft in (25.3 m)
Turning Circle – Clearance Diameter 93 ft in (28.4 m)

Tires

Standard Tire 27.00R49 (E4)

Brakes

Brake Standards ISO 3450:1996
Brake Surface Area – Rear 15828 in2 (10.3 m2)
Brake Surface Area – Front 6331 in2 (4.1 m2)

Body Hoists

Pump Flow – High Idle 120.9 gal/min
Relief Valve Setting – Raise 2750 psi
Body Raise Time – High Idle 15 s
Body Lower Time – Float 13 s
Relief Valve Setting – Lower 500 psi
Body Lower Time – High Idle 13 s

Final Drives

Planetary Ratio 7.0:1
Differential Ratio 2.736:1
Total Reduction Ratio 19.1576:1

Operating Specifications

Nominal Payload Class (100%) 200000 lb (90718.4 kg)
Top Speed – Loaded 41.7 mph (67.2 km/h)
Body Capacity – Sae 2:1 83.8 yd3 (64.1 m3)
Not To Exceed Payload (120%)* 240000 lb (108862.1 kg)
Nominal Payload (100%) 200000 lb (90718.4 kg)
Maximum Payload (110%) 220000 lb (99790.3 kg)

Service Refill Capacities

Cooling System 60.2 gal (227.9 L)
Steering System – Including Tank 14.1 gal (53.4 L)
Brake Hoist System – Includes Tank 117 gal (442.9 L)
Crankcase 28.7 gal (108.7 L)
Torque Converter – Transmission System 36.5 gal (138.2 L)
Brake Hoist System 85 gal (321.8 L)
Final Drive – Each 20 gal (75.8 L)
Fuel Tank (1) 300 gal (1135.7 L)
Differentials 59.9 gal (226.8 L)
Fuel Tank (2) 350 gal (1324.9 L)

Weight Distributions – Approximate

Front Axle – Empty 46 %
Front Axle – Loaded 33 %
Rear Axle – Empty 54 %
Rear Axle – Loaded 67 %

Weights – Approximate

Target Gross Machine Weight 363000 lb (164654.1 kg)

Capacity – Dual Slope – 100% Fill Factor

Struck 54.8 yd3 (41.9 m3)
Heaped 2:1 (Sae) 78.8 yd3 (60.3 m3)

Rops

Rops/Fops Standards Standards

Sound

Sound Standards Standards

Suspension

Rear Axle – Oscillation 5.4 degrees
Empty Loaded Cylinder Stroke Front 2.9 in (73.7 mm)
Empty Loaded Cylinder Stroke Rear 2.5 in (63.5 mm)

Capacity – Coal Bodies – 100% Fill Factor

Sae 2:1 – For Use With Material Densities Of 1160 Kg/M3 (1,950 Lb/Yd3) 116 yd3 (88.7 m3)
Sae 2:1 – For Use With Material Densities Of 1040-1160 Kg/M3 (1,750-1,950 Lb/Yd3) 139 yd3 (106.3 m3)
Sae 2:1 – For Use With Material Densities Of 950-1040 Kg/M3 (1,600-1,750 Lb/Yd3) 144 yd3 (110.1 m3)
Sae 2:1 – For Use With Material Densities Less Than 950 Kg/M3 (1,600 Lb/Yd3) 165 yd3 (126.2 m3)

Capacity – X Body – 100% Fill Factor

Struck 56.3 yd3 (43.1 m3)
Heaped 2:1 (Sae) 83.8 yd3 (64.1 m3)
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