Specification
Value
Engine Model
Cat® 3512C HD
Gross Power - SAE J1995
1450 HP
Net Power - SAE J1349
1348 HP
Emissions
Fuel Optimized
Bore
6.7 in
Stroke
8.4 in
Displacement
3573.6 in³
Note (1)
Net Power advertised is the power available at the flywheel when
the engine is equipped with fan, air cleaner, muffler, and alternator
with engine speed at 1,800 rpm.
Specification
Value
Maximum water flow
1200 gal(US)/min
Water per spray head (minimum)
35 gal(US)/min
Water per spray head (maximum)
600 gal(US)/min
Spray head opening range (minimum)
0.04 in
Spray head opening range (maximum)
0.75 in
Maximum size debris flushed through spray head
0.75 in
Spray system hydraulic tank capacity
7.25 gal (US)
Maximum number of rear spray heads
5
Minimum number of rear spray heads (recommended 3)
2
Minimum number of front/side spray heads
2
Maximum number of front/side spray heads
0
Maximum water from cannon (idle)
600 gal(US)/min
Maximum water from cannon (high idle)
1250 gal(US)/min
Maximum cannon spray distance
200 ft
Type
Wet water pump/hydraulic motor coupling
Note
Operator selectable coverage: 0.2-0.8 L/m² (4 kph - 40 kph) / 0.05-0.2 gal/ft² (3 mph - 25 mph). Coverage rates above 0.6 L/m² may not be available at higher speeds depending on head count and configuration.
Note (1)
Opening is automatically controlled by the system to achieve AutoMode Coverage or Manual Mode Flow Rate.
Note (2)
AutoMode Spray controls water coverage automatically to the number of heads being used and ground speed achieved.
Note (3)
Manual Mode allows the operator to set a water flow rate that is constant regardless of ground speed.
Note (4)
Spray Heads on competitive water distribution systems require tools and maintenance to change flow and spray pattern. Caterpillar is the only company to have variable active spray heads to regulate water spray.
Note (5)
Water flow is continually adjusted during operation to conserve water and achieve desired coverage and flow rate
Specification
Value
Water Tank Capacity
up to 121 133 L (32,000 gal)
Note
Multiple tank configurations are offered based on customer preference and regional locations. Water Tank Capacity Range: 110 000 - 121 133 L (29,059 - 32,000 gal)
Machine Weight (with water tank full)
480,655 lb - 520,237 lb / 218 022 kg - 235 976 kg
Empty Machine Operating Weight (without water / with fuel)
241,647 lb - 251,098 lb / 109 610 kg - 113 896 kg
Water Tank - Max Empty Weight (no WDS)
57,320 lb - 66,769 lb / 26 000 kg - 30 286 kg
Note (1)
Cat branded tanks include additional features and options commonly selected by customers in the industry. Splash guards, fill chute, and rock ejectors are standard.
Note (2)
Hoist cylinder mounting on all tank offerings enhances serviceability.
Specification
Value
Note
Water Tank Capacity Range: 110 000 - 121 133 L (29,059 - 32,000 gal)
Note (2)
Operator selectable coverage: 0.2-0.8 L/m² (4 kph - 40 kph) / 0.5-0.2 gal/ft² (3 mph - 25 mph)
Specification
Value
Target Gross Machine Weight
550000 lb
Chassis Weight
180827 lb
Specification
Value
Forward - 1
7.5 mile/h
Forward - 2
10.2 mile/h
Forward - 3
13.8 mile/h
Forward - 4
18.6 mile/h
Forward - 5
25.2 mile/h
Forward - 6
34 mile/h
Reverse
6.8 mile/h
Note
Maximum travel speeds with standard 33.00-R51 tires.
Specification
Value
Differential Ratio
2.10:1
Planetary Ratio
10.83:1
Total Reduction Ratio
22.75:1
Specification
Value
Brake Surface - Front
9497 in²
Brake Surface - Rear
13908 in²
Brake Standards
ISO 3450:2011
Specification
Value
Pump Flow - High Idle
198 gal/min
Relief Valve Setting - Raise
2500 psi
Relief Valve Setting - Lower
500 psi
Body Raise Time - High Idle
15.2 s
Body Lower Time - Float
16.2 s
Body Lower Time - High Idle
15.9 s
Specification
Value
Front Axle - Empty
46 %
Front Axle - Loaded
33 %
Rear Axle - Empty
54 %
Rear Axle - Loaded
67 %
Specification
Value
Rear axle - Oscillation
5 °
Specification
Value
Steering Standards
ISO 5010:2007
Steer Angle
36 °
Turning Diameter - Front
97.7 ft
Specification
Value
Standard Tire
33.00-R51 (E3 & E4)
Note (1)
Productive capabilities of the 785D 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 evaluate all job conditions and consult the tire manufacturer for proper tire selection.
Specification
Value
Fuel Tank
500 gal (US)
Cooling System
100 gal (US)
Crankcase
54 gal (US)
Differential - Final Drives
115 gal (US)
Steering Tank
24 gal (US)
Steering System - Including Tank
31 gal (US)
Brake Hoist System
89 gal (US)
Brake Hoist System - Includes Tank
169 gal (US)
Torque Converter - Transmission System - Including Sump
65.5 gal (US)
Specification
Value
Air Conditioning
18390 Btu/lb
Heater / Defroster
43930 Btu
ROPS Standards (1)
The ROPS (Rollover Protective Structure) for the cab offered by Caterpillar meets ISO 3471:2008 ROPS criteria.
FOPS Standards
The FOPS (Falling Objects Protective Structure) meets ISO 3449:2005 Level II FOPS criteria.
Note (1)
The operator sound exposure Leq (equivalent sound pressure level) measured according to work cycle procedures specified in ANSI/SAE J1166 MAY90 is 80 dB(A) for cab offered by Caterpillar, when properly installed, maintained and tested with doors and windows closed.
Note (2)
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 APR95, mid-gear moving operation is 89 dB(A).
Note (3)
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.
