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Engine
Engine Model
Cat® C15 Cat® C15	Cat® C18 Cat® C18	Cat® C27 Cat® C27
Rated Engine Speed
1700 r/min 1700 r/min	1700 r/min 1700 r/min	2000 r/min 2000 r/min
Gross Power - SAE J1995
515 HP 384 kW	605 HP 451 kW	825 HP 615 kW
Net Power - SAE J1349
477 HP 356 kW	550 HP 410 kW	727 HP 542 kW
Net Power - ISO 9249
477 HP 356 kW	550 HP 410 kW	727 HP 542 kW
Net Power - 80/1269/EEC
489 HP 365 kW	-	727 HP 542 kW
Net Power - ISO 14396
508 HP 379 kW	-	-
Net Torque - SAE J1349
1834 ft·lbf 2486 N·m	2221 ft-lb 3012 N·m	-
Number of Cylinders
6 6	6 6	-
Bore
5.4 in 137 mm	5.7 in 145 mm	5.4 in 137 mm
Stroke
6.7 in 171 mm	7.2 in 183 mm	6 in 152 mm
Displacement
927.6 in³ 15.2 l	1105 in³ 18.1 l	1648 in³ 27 l
Note (1)
Power rating applies at 1,700 rpm when tested under the specified condition for the specified standard. Power rating applies at 1,700 rpm when tested under the specified condition for the specified standard.	-	Power rating applies at 2,000 rpm when tested under the specified condition for the specified standard. Power rating applies at 2,000 rpm when tested under the specified condition for the specified standard.
Note (2)
Ratings based on SAE J1995 standard air conditions of 25° C (77° F) and 100 kPa (29.61 Hg) barometer. Power based on fuel having API gravity of 35 at 16° C (60° F) and an LHV of 42 780 kJ/kg (18,390 BTU/lb) when engine used at 30° C (86° F). Ratings based on SAE J1995 standard air conditions of 25° C (77° F) and 100 kPa (29.61 Hg) barometer. Power based on fuel having API gravity of 35 at 16° C (60° F) and an LHV of 42 780 kJ/kg (18,390 BTU/lb) when engine used at 30° C (86° F).	-	Ratings based on SAE J1995 standard air conditions of 25° C (77° F) and 100 kPa (29.61 Hg) barometer. Power based on fuel having API gravity of 35 at 16° C (60° F) and an LHV of 42 780 kJ/kg (18,390 BTU/lb) when engine used at 30° C (86° F). Ratings based on SAE J1995 standard air conditions of 25° C (77° F) and 100 kPa (29.61 Hg) barometer. Power based on fuel having API gravity of 35 at 16° C (60° F) and an LHV of 42 780 kJ/kg (18,390 BTU/lb) when engine used at 30° C (86° F).
Note (3)
No engine derating required up to 3000 m (9,843 ft) altitude. No engine derating required up to 3000 m (9,843 ft) altitude.	-	No engine derating required up to 3810 m (12,500 ft) for Tier 2 Equivalent. No engine derating required up to 3810 m (12,500 ft) for Tier 2 Equivalent.
Note (4)
Meets Japan Small Volume Exemption. Meets Japan Small Volume Exemption.	-	-
Emissions
Meets U.S. EPA Tier 4 and EU Stage V emission standards. Meets U.S. EPA Tier 4 and EU Stage V emission standards.	-	-
Net Torque
-	-	2874 ft-lb 3896 N·m
Engine Power - ISO 14396
-	598 HP 446 kW	813 HP 607 kW
Peak Torque - Speed
-	-	1300 r/min 1300 r/min
Weights - Approximate
Target Gross Machine Operating Weight
157000 lb 71214 kg	181000 lb 82100 kg	-
Target Gross Machine Weight
157000 lb 71214 kg	181000 lb 82100 kg	-
Chassis Weight
55948 lb 25378 kg	59223 lb 26863 kg	-
Body Weight
17306 lb 7850 kg	17306 lb 8258 kg	-
Note (1)
Chassis weight with 100% fuel, hoist, body mounting group, rims, and tires. Chassis weight with 100% fuel, hoist, body mounting group, rims, and tires.	-	-
Note (2)
Body weight is the standard Dual Slope body with no liner and will vary depending on configuration. Body weight is the standard Dual Slope body with no liner and will vary depending on configuration.	-	-
Maximum Gross Vehicle Weight
-	-	226503 lb 102740 kg
Operating Specifications
Nominal Payload Class (100%)
42.1 ton (US) 38.2 t	51.6 ton (US) 46.8 t	61.7 ton (US) 56 t
Top Speed - Loaded
45.8 mile/h 73.7 km/h	49.2 mile/h 79.1 km/h	42 mile/h 67.6 km/h
Target Payload (100%)
42.1 ton (US) 38.2 t	-	61.7 ton (US) 56 t
Maximum Working Payload (110%)
46.3 ton (US) 42 t	-	67.8 ton (US) 61.5 t
Maximum Allowable Payload (120%)*
50.5 ton (US) 45.8 t	-	74 ton (US) 67.1 t
Body Capacity - SAE 2:1
32.9 yd³ 25.2 m³	40.8 yd³ 31.2 m³	46.75 yd³ 35.75 m³
Note (1)
Refer to Caterpillar 10/10/20 Payload Policy for maximum gross machine weight limitations. Refer to Caterpillar 10/10/20 Payload Policy for maximum gross machine weight limitations.	-	Capacity with Dual Slope body – no liner. Capacity with Dual Slope body – no liner.
Note (2)
Target payload and capacity based on Dual Slope body with no liner. Attachment selection will affect payload and maximum gross machine operating weight. Target payload and capacity based on Dual Slope body with no liner. Attachment selection will affect payload and maximum gross machine operating weight.	-	* Refer to the Caterpillar 10/10/20 Payload Policy for maximum gross machine weight limitations. * Refer to the Caterpillar 10/10/20 Payload Policy for maximum gross machine weight limitations.
Target Payload Capacity
-	51.6 ton (US) 46.8 ton (US)	-
Maximum Payload Class (110%)
-	56.7 ton (US) 51.4 ton (US)	-
Not to Exceed Payload (120%)
-	61.9 ton (US) 56.1 ton (US)	-
Body Capacity (SAE 2:1)**
-	40.8 yd³ 31.2 m³	-
Transmission
Forward - 1
7.4 mile/h 11.9 km/h	8 mile/h 12.8 km/h	6.7 mile/h 10.8 km/h
Forward - 2
10.1 mile/h 16.3 km/h	10.9 mile/h 17.5 km/h	9.4 mile/h 15.1 km/h
Forward - 3
13.8 mile/h 22.2 km/h	14.8 mile/h 23.7 km/h	12.7 mile/h 20.4 km/h
Forward - 4
18.5 mile/h 29.8 km/h	19.8 mile/h 31.9 km/h	17 mile/h 27.4 km/h
Forward - 5
25.1 mile/h 40.4 km/h	26.9 mile/h 43.3 km/h	23 mile/h 37 km/h
Forward - 6
33.8 mile/h 54.4 km/h	36.2 mile/h 58.4 km/h	31.1 mile/h 50.1 km/h
Forward - 7
45.8 mile/h 73.7 km/h	49.2 mile/h 79.2 km/h	42 mile/h 67.6 km/h
Reverse
8.8 mile/h 14.2 km/h	10.4 mile/h 16.8 km/h	8.8 mile/h 14.1 km/h
Note
Maximum travel speeds with standard 18.00R33 (E4) tires. Maximum travel speeds with standard 18.00R33 (E4) tires.	-	Maximum travel speeds with standard 24.00R35 (E4) tires. Maximum travel speeds with standard 24.00R35 (E4) tires.
Final Drives
Differential Ratio
1.92:1 1.92:1	2.74:1 2.74:1	3.64:1 3.64:1
Planetary Ratio
4.80:1 4.80:1	4.80:1 4.80:1	4.80:1 4.80:1
Total Reduction Ratio
9.26:1 9.26:1	13.14:1 13.14:1	17.49:1 17.49:1
Brakes
Brake Surface - Front
216 in² 1395 cm²	216 in² 1395 cm²	257 in² 655 cm²
Brake Surface - Rear
6235 in² 40225 cm²	7794 in² 50281 cm²	9497 in² 61269 cm²
Brake Standards
ISO 3450:2011 ISO 3450:2011	ISO 3450:1996 ISO 3450:1996	ISO 3450:2011 ISO 3450:2011
Note
Target gross machine operating weight is 71 214 kg (157,000 lb). Target gross machine operating weight is 71 214 kg (157,000 lb).	-	-
Body Hoists
Pump Flow - High Idle
118 gal/min 448 l/min	112 gal/min 425 l/min	118 gal/min 448 l/min
Relief Valve Setting - Raise
2750 psi 18950 kPa	2750 psi 18950 kPa	2502 psi 17250 kPa
Relief Valve Setting - Lower
500 psi 3450 kPa	500 psi 3450 kPa	500 psi 3450 kPa
Body Raise Time - High Idle
7.5 s 7.5 s	8 s 8 s	9.5 s 9.5 s
Body Lower Time - Float
10 s 10 s	10 s 10 s	13 s 13 s
Body Power Down - High Idle
10 s 10 s	10 s 10 s	13 s 13 s
Capacity - Dual Slope - 100% Fill Factor
Struck
23.01 yd³ 17.6 m³	31.3 yd³ 23.9 m³	35.13 yd³ 26.86 m³
Heaped (SAE 2:1)*
32.9 yd³ 25.2 m³	-	46.76 yd³ 35.75 m³
Heaped 2:1 (SAE)
-	40.8 yd³ 31.2 m³	-
Note (1)
Contact your local Cat dealer for body recommendation. Contact your local Cat dealer for body recommendation.	-	Contact your local Cat dealer for body recommendation. Contact your local Cat dealer for body recommendation.
Note (2)
ISO 6483:1980. ISO 6483:1980.	-	* ISO 6483:1980. * ISO 6483:1980.
Capacity - Flat Floor - 100% Fill Factor
Struck
23.01 yd³ 17.6 m³	31.3 yd³ 23.9 m³	34.33 yd³ 26.25 m³
Heaped (SAE 2:1)*
32.9 yd³ 25.2 m³	-	46.41 yd³ 35.49 m³
Heaped 2:1 (SAE)
-	40.9 yd³ 31.3 m³	-
Note (1)
Contact your local Cat dealer for body recommendation. Contact your local Cat dealer for body recommendation.	-	Contact your local Cat dealer for body recommendation. Contact your local Cat dealer for body recommendation.
Note (2)
ISO 6483:1980. ISO 6483:1980.	-	* ISO 6483:1980. * ISO 6483:1980.
Weight Distributions - Approximate
Front Axle - Empty
49 % 49 %	51.4 % 51.4 %	53 % 53 %
Front Axle - Loaded
34 % 34 %	34.2 % 34.2 %	35 % 35 %
Rear Axle - Empty
51 % 51 %	48.6 % 48.6 %	47 % 47 %
Rear Axle - Loaded
66 % 66 %	65.8 % 65.8 %	65 % 65 %
Suspension
Empty Loaded Cylinder Stroke Front
9.2 in 234 mm	9.2 in 234 mm	9.2 in 234 mm
Empty Loaded Cylinder Stroke Rear
5.9 in 149 mm	5.8 in 149 mm	5.8 in 149 mm
Rear axle - Oscillation
8.9 ° 8.9 °	8.9 ° 8.9 °	8.1 ° 8.1 °
Service Refill Capacities
Fuel Tank
140 gal (US) 530 l	140 gal (US) 530 l	210 gal (US) 795 l
Cooling System
33 gal (US) 125 l	33 gal (US) 125 l	45 gal (US) 171 l
Crankcase
17 gal (US) 64 l	17 gal (US) 64 l	24 gal (US) 90 l
Differential - Final Drives
47 gal (US) 180 l	47 gal (US) 180 l	38 gal (US) 145 l
Steering Tank
14.5 gal (US) 55 l	14.5 gal (US) 55 l	9.5 gal (US) 36 l
Steering System - Including Tank
23 gal (US) 87 l	23 gal (US) 87 l	14 gal (US) 54 l
Brake/Hoist Hydraulic Tank
38 gal (US) 145 l	38 gal (US) 145 l	46.5 gal (US) 176 l
Brake Hoist System
60 gal (US) 227 l	60 gal (US) 227 l	85 gal (US) 322 l
Torque Converter - Transmission System
17 gal (US) 64 l	17 gal (US) 64 l	-
DEF Tank
6 gal (US) 21 l	6 gal (US) 21 l	-
Torque Converter - Transmission System - LRC
-	-	16 gal (US) 61 l
Tires
Standard Tire
18.00R33 (E4) 18.00R33 (E4)	21.00R33 (E4) 21.00R33 (E4)	24.00R35 (E4) 24.00R35 (E4)
Note (1)
Productive capabilities of the 770G truck are such that, under certain job conditions, TKPH (TMPH) capabilities of standard or optional tires could be exceeded and, therefore, limit production. Productive capabilities of the 770G truck are such that, under certain job conditions, TKPH (TMPH) capabilities of standard or optional tires could be exceeded and, therefore, limit production.	-	Productive capabilities of the 773G truck are such that, under certain job conditions, TKPH (TMPH) capabilities of standard or optional tires could be exceeded and, therefore, limit production. Productive capabilities of the 773G truck are such that, under certain job conditions, TKPH (TMPH) capabilities of standard or optional tires could be exceeded and, therefore, limit production.
Note (2)
Caterpillar recommends the customer evaluates all job conditions and consults the tire manufacturer for proper tire selection. Caterpillar recommends the customer evaluates all job conditions and consults the tire manufacturer for proper tire selection.	-	Caterpillar recommends the customer evaluate all job conditions and consult the tire manufacturer for proper tire selection. Caterpillar recommends the customer evaluate all job conditions and consult the tire manufacturer for proper tire selection.
ROPS
ROPS Standards
Rollover Protective Structure (ROPS) for cab offered by Caterpillar meets ISO 3471:2008 ROPS criteria. Rollover Protective Structure (ROPS) for cab offered by Caterpillar meets ISO 3471:2008 ROPS criteria.	ROPS (Rollover Protective Structure) for cab offered by Caterpillar meets ISO 3471:2008 ROPS criteria. ROPS (Rollover Protective Structure) for cab offered by Caterpillar meets ISO 3471:2008 ROPS criteria.	Rollover Protective Structure (ROPS) for cab offered by Caterpillar meets ISO 3471:2008 ROPS criteria. Rollover Protective Structure (ROPS) for cab offered by Caterpillar meets ISO 3471:2008 ROPS criteria.
FOPS Standards
Falling Objects Protective Structure (FOPS) meets ISO 3449:2005 Level II FOPS criteria. Falling Objects Protective Structure (FOPS) meets ISO 3449:2005 Level II FOPS criteria.	FOPS (Falling Objects Protective Structure) meets ISO 3449:2005 Level II FOPS criteria. FOPS (Falling Objects Protective Structure) meets ISO 3449:2005 Level II FOPS criteria.	Falling Object Protective Structure (FOPS) meets ISO 3449:2005 Level II FOPS criteria. Falling Object Protective Structure (FOPS) meets ISO 3449:2005 Level II FOPS criteria.
Sound
Sound Standards (1)
Hearing protection may be needed when operating with open operator station & cab for extended periods or in noisy environment. Hearing protection may be needed when operating with open operator station & cab for extended periods or in noisy environment.	Hearing protection may be needed when operating with open operator station & cab for extended periods or in noisy environment. Hearing protection may be needed when operating with open operator station & cab for extended periods or in noisy environment.	The operator Equivalent Sound Pressure Level (Leq) is 76 dB(A) when SAE J1166 FEB2008 is used to measure the value for an enclosed cab. This is a work cycle sound exposure level. The cab was properly installed and maintained. The test was conducted with the cab doors and the cab windows closed. The operator Equivalent Sound Pressure Level (Leq) is 76 dB(A) when SAE J1166 FEB2008 is used to measure the value for an enclosed cab. This is a work cycle sound exposure level. The cab was properly installed and maintained. The test was conducted with the cab doors and the cab windows closed.
Sound Standards (2)
Exterior sound pressure power level for standard machine measured according to tests specified in ISO 6395:2008 is 116 dB(A). Exterior sound pressure power level for standard machine measured according to tests specified in ISO 6395:2008 is 116 dB(A).	Exterior sound pressure power level for standard machine measured according to tests specified in ISO 6395:2008 is 118 dB(A). Exterior sound pressure power level for standard machine measured according to tests specified in ISO 6395:2008 is 118 dB(A).	The exterior sound pressure level for the standard machine measured at a distance of 15 m (49 ft) according to the test procedures specified in SAE J88:2008, mid‑gear moving operation is 86 dB(A). The exterior sound pressure level for the standard machine measured at a distance of 15 m (49 ft) according to the test procedures specified in SAE J88:2008, mid‑gear moving operation is 86 dB(A).
Sound Standards (3)
Operator Equivalent Sound Pressure Level is 79 dB(A) & 74 dB(A) with EU sound suppression applied when ISO 6396:2008 is used. Operator Equivalent Sound Pressure Level is 79 dB(A) & 74 dB(A) with EU sound suppression applied when ISO 6396:2008 is used.	Operator Equivalent Sound Pressure Level (Leq) is 78 dB(A) when ISO 6396:2008 is used to measure the value for an enclosed cab. Operator Equivalent Sound Pressure Level (Leq) is 78 dB(A) when ISO 6396:2008 is used to measure the value for an enclosed cab.	Hearing protection may be needed when operating with an open operator station and cab (when not properly maintained or doors/windows open) for extended periods or in a noisy environment. Hearing protection may be needed when operating with an open operator station and cab (when not properly maintained or doors/windows open) for extended periods or in a noisy environment.
Steering
Steering Standards
ISO 5010:2007 ISO 5010:2007	ISO 5010:2007 ISO 5010:2007	SAE J1511 FEB94 ISO 5010:1992 SAE J1511 FEB94 ISO 5010:1992
Steer Angle
40.5 ° 40.5 °	40.5 ° 40.5 °	31 ° 31 °
Turning Diameter - Front
57.7 ft 17.6 m	57.7 ft 17.6 m	77.1 ft 23.5 m
Turning Circle - Clearance Diameter
66.6 ft 20.3 m	66.6 ft 20.3 m	85.6 ft 26.1 m
Note
Target gross machine operating weight is 71 214 kg (157,000 lb). Target gross machine operating weight is 71 214 kg (157,000 lb).	-	-
Dimensions
Height - Top of ROPS
12.7 ft 3857 mm	12.8 ft 3907 mm	-
Overall Body Length
26.8 ft 8199 mm	26.8 ft 8164 mm	-
Inside Body Length
18.5 ft 5635 mm	19 ft 5781 mm	-
Overall Length
28.9 ft 8796 mm	28.9 ft 8808 mm	-
Wheel Base
13 ft 3960 mm	13 ft 3960 mm	-
Rear Axle - Tail
8.5 ft 2586 mm	9.5 ft 2598 mm	-
Ground Clearance
1.6 ft 518 mm	1.6 ft 618 mm	-
Dump Clearance
1.7 ft 506 mm	1.5 ft 562 mm	-
Loading Height - Empty
10.3 ft 3147 mm	11.6 ft 3570 mm	-
Inside Body Depth - Maximum
4.6 ft 1404 mm	5.7 ft 1747 mm	-
Overall Height - Body Raised
27.1 ft 8255 mm	27.1 ft 8257 mm	-
Operating Width
15.7 ft 4780 mm	15.7 ft 4780 mm	-
Centerline Front Tire Width
10.2 ft 3110 mm	10.4 ft 3165 mm	-
Engine Guard Clearance
1.8 ft 335 mm	2 ft 618 mm	-
Outside Body Width
12.9 ft 3931 mm	12.9 ft 3931 mm	-
Inside Body Width
11.9 ft 3627 mm	11.9 ft 3642 mm	-
Front Canopy Height
13.5 ft 4114 mm	13.7 ft 4159 mm	-
Rear Axle - Clearance
1.8 ft 548 mm	1.9 ft 572 mm	-
Centerline of Rear Dual Tire Width
8.3 ft 2536 mm	8.7 ft 2652 mm	-
Overall Tire Width
12.1 ft 3693 mm	12.9 ft 3927 mm	-

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