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Engine 
Engine Model
Cat® 3512C HD
Cat® C32B
Cat® C32B
Gross Power - SAE J1995:2014
1450 hp
1082 kW
1025 hp
765 kW
1026 hp
765 kW
Net Power - SAE J1349:2011
1348 hp
1005 kW
916 hp
683 kW
953 hp
711 kW
Emissions
Fuel Optimized
Fuel Optimized
Fuel Optimized
Bore
6.7 in
170 mm
5.7 in
145 mm
5.7 in
145 mm
Stroke
8.4 in
215 mm
6.4 in
162 mm
6.4 in
162 mm
Displacement
3573.6 in³
58.56 l
1959 in³
32.1 l
1959 in³
32.1 l
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.
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.
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.
Cat Water Delivery System (WDS)
Maximum water flow
1800 gal(US)/min
6814 L/min
1800 gal(US)/min
6814 L/min
1800 gal(US)/min
6814 L/min
Water per spray head (minimum)
35 gal(US)/min
132.5 L/min
35 gal(US)/min
132.5 L/min
35 gal(US)/min
132.5 L/min
Water per spray head (maximum)
600 gal(US)/min
2270 L/min
600 gal(US)/min
2270 L/min
600 gal(US)/min
2271 L/min
Spray head opening range (minimum)
0.04 in
1 mm
0.04 in
1 mm
0.04 in
1 mm
Spray head opening range (maximum)
0.75 in
19 mm
0.75 in
19 mm
0.75 in
19 mm
Maximum size debris flushed through spray head
0.75 in
19 mm
0.75 in
19 mm
0.75 in
19 mm
Spray system hydraulic tank capacity
7.25 gal (US)
27.5 l
7.25 gal (US)
27.5 l
7.25 gal (US)
27.5 l
Maximum number of rear spray heads
5
5
5
Minimum number of rear spray heads (recommended 3)
2
2
2
Minimum number of front/side spray heads
2
2
2
Maximum number of front/side spray heads
Maximum water from cannon (idle)
600 gal(US)/min
2271 L/min
600 gal(US)/min
2271 L/min
600 gal(US)/min
2271 L/min
Maximum water from cannon (high idle)
1650 gal(US)/min
6246 L/min
1650 gal(US)/min
6246 L/min
1650 gal(US)/min
6246 L/min
Maximum cannon spray distance
200 ft
61 m
200 ft
61 m
200 ft
61 m
Type
Wet water pump/hydraulic motor coupling
Wet water pump/hydraulic motor coupling
Wet water pump/hydraulic motor coupling
Note
Operator selectable coverage: 0.1 - 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.
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.
Operator selectable coverage: 0.1 - 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)
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.
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.
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.
Note (2)
The Auto Mode setting controls water coverage and automatically adjusts to the number of spray heads being used — independent of ground speed. This is an exclusive feature designed into the Cat WDS software to help water more efficiently. Water flow is continually adjusted during operation to conserve water and achieve desired coverage and flow rate.
Power rating applies at 1,800 rpm when tested under the specified condition for the specified standard.
No engine derating required up to 3048 m (10,000 ft) altitude.
Note (3)
Alternatively, manual mode allows the operator to set a water flow rate that is constant regardless of ground speed. This mode is not recommended for daily operation and will reduce watering efficiency and may increase fuel usage.
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).
Meets China Nonroad Stage III emission standards equivalent to U.S. EPA Tier 2.
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.
No engine derating required up to 2286 m (7,500 ft) for HRC and 4572 m (15,000 ft) for LRC machines.
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)
Cannon performance depends on nozzle orifice and pipe size.
Available as Tier 4 Final/Stage V equivalent or Tier 2/Stage II equivalent emission standards.
Cannon performance depends on nozzle orifice and pipe size.
Tank Configurations
Water Tank Capacity
up to 121 133 L (32,000 gal)
up to 75 700 L (20,000 gal)
up to 75 700 L (20,000 gal)
Note
Operator selectable coverage: 0.1 - 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.
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.
Operator selectable coverage: 0.1 - 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.
Machine Weight (with water tank full)
480,655 lb - 520,237 lb / 218 022 kg - 235 976 kg
327,964 - 327,964 lb / 147 172 - 148 762 kg
315,365 - 327,964 lb / 143 047 - 148 762 kg
Empty Machine Operating Weight (without water / with fuel)
241,647 lb - 251,098 lb / 109 610 kg - 113 896 kg
160,307 - 162,323 lb / 72 714 - 73 629 kg
151,204 - 153,221 lb / 68 585 - 69 500 kg
Water Tank - Max Empty Weight (no WDS)
57,320 lb - 66,769 lb / 26 000 kg - 30 286 kg
42,983 - 44,092 lb / 19 497 - 20 000 kg
42,983 - 44,092 lb / 19 497 - 20 000 kg
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.
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.
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.
Note (2)
The Auto Mode setting controls water coverage and automatically adjusts to the number of spray heads being used — independent of ground speed. This is an exclusive feature designed into the Cat WDS software to help water more efficiently. Water flow is continually adjusted during operation to conserve water and achieve desired coverage and flow rate.
Power rating applies at 1,800 rpm when tested under the specified condition for the specified standard.
No engine derating required up to 3048 m (10,000 ft) altitude.
Note (3)
Alternatively, manual mode allows the operator to set a water flow rate that is constant regardless of ground speed. This mode is not recommended for daily operation and will reduce watering efficiency and may increase fuel usage.
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).
Meets China Nonroad Stage III emission standards equivalent to U.S. EPA Tier 2.
Operating Specifications
Note
Operator selectable coverage: 0.1 - 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.
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.
Operator selectable coverage: 0.1 - 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 (2)
The Auto Mode setting controls water coverage and automatically adjusts to the number of spray heads being used — independent of ground speed. This is an exclusive feature designed into the Cat WDS software to help water more efficiently. Water flow is continually adjusted during operation to conserve water and achieve desired coverage and flow rate.
Power rating applies at 1,800 rpm when tested under the specified condition for the specified standard.
No engine derating required up to 3048 m (10,000 ft) altitude.
Weights - Approximate
Target Gross Machine Weight
550000 lb
249476 kg
363000 lb
164654 kg
360148 lb
163360 kg
Chassis Weight
180827 lb
82022 kg
115217 lb
52262 kg
180827 lb
82022 kg
Transmission
Forward - 1
7.5 mile/h
12.1 km/h
6.6 mile/h
10.7 km/h
6.8 mile/h
10.9 km/h
Forward - 2
10.2 mile/h
16.3 km/h
9.1 mile/h
14.6 km/h
9.2 mile/h
14.8 km/h
Forward - 3
13.8 mile/h
22.2 km/h
11.9 mile/h
19.2 km/h
12.6 mile/h
20.1 km/h
Forward - 4
18.6 mile/h
29.9 km/h
16.6 mile/h
26.7 km/h
16.9 mile/h
27.1 km/h
Forward - 5
25.2 mile/h
40.6 km/h
22.5 mile/h
36.2 km/h
22.9 mile/h
36.8 km/h
Forward - 6
34 mile/h
54.8 km/h
30.2 mile/h
48.6 km/h
30.7 mile/h
49.4 km/h
Reverse
6.8 mile/h
11 km/h
7.5 mile/h
12.1 km/h
7.5 mile/h
12.1 km/h
Note
Operator selectable coverage: 0.1 - 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.
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.
Operator selectable coverage: 0.1 - 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.
Final Drives
Differential Ratio
2.10:1
2.736:1
2.74:1
Planetary Ratio
10.83:1
7.0:1
7.00:1
Total Reduction Ratio
22.75:1
19.1576:1
19.16:1
Braking System
Brake Surface - Front
9497 in²
61270 cm²
6331 in²
40846 cm²
432 in²
2787 cm²
Brake Surface - Rear
13908 in²
89729 cm²
15828 in²
102116 cm²
15828 in²
102116 cm²
Brake Standards
ISO 3450:2011
ISO 3450:2011
ISO 3450:2011
Body Hoists
Pump Flow - High Idle
198 gpm
750 L/min
6331 gpm
458 L/min
Relief Valve Setting - Raise
2500 psi
17238 kPa
2750 psi
18950 kPa
Relief Valve Setting - Lower
500 psi
3450 kPa
500 psi
3450 kPa
Body Raise Time - High Idle
15.2 s
15.2 s
15 s
15 s
15 s
15 s
Body Lower Time - Float
16.2 s
16.2 s
13 s
13 s
13 s
13 s
Body Lower Time - High Idle
15.9 s
15.9 s
13 s
13 s
13 s
13 s
Weight Distributions - Approximate
Front Axle - Empty
46 %
46 %
46 %
46 %
46 %
46 %
Front Axle - Loaded
33 %
33 %
33 %
33 %
30 %
30 %
Rear Axle - Empty
54 %
54 %
54 %
54 %
54 %
54 %
Rear Axle - Loaded
67 %
67 %
67 %
67 %
70 %
70 %
Suspension
Rear axle - Oscillation
5 °
5 °
5.4 °
5.4 °
5.4 °
5.4 °
Steering
Steering Standards
ISO 5010:2007
ISO 5010:2007
ISO 5010:2007
Steer Angle
36 °
36 °
30.5 °
30.5 °
30.5 °
30.5 °
Turning Diameter - Front
97.7 ft
29.8 m
83 ft
25.3 m
83 ft
25.3 m
Tires
Standard Tire
33.00-R51 (E3 & E4)
27.00R49 (E4)
27.00R49 (E4)
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.
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.
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.
Note (2)
The Auto Mode setting controls water coverage and automatically adjusts to the number of spray heads being used — independent of ground speed. This is an exclusive feature designed into the Cat WDS software to help water more efficiently. Water flow is continually adjusted during operation to conserve water and achieve desired coverage and flow rate.
Power rating applies at 1,800 rpm when tested under the specified condition for the specified standard.
No engine derating required up to 3048 m (10,000 ft) altitude.
Service Refill Capacities
Fuel Tank
500 gal (US)
1893 l
Cooling System
100 gal (US)
379 l
63.4 gal (US)
240 l
56 gal (US)
212 l
Crankcase
54 gal (US)
204 l
28.7 gal (US)
109 l
30 gal (US)
115 l
Differential - Final Drives
115 gal (US)
436 l
Steering Tank
24 gal (US)
90 l
Steering System - Including Tank
31 gal (US)
117 l
14.1 gal (US)
53.6 l
16 gal (US)
60 l
Brake Hoist System
89 gal (US)
337 l
85 gal (US)
322 l
110 gal (US)
420 l
Brake Hoist System - Includes Tank
169 gal (US)
641 l
Torque Converter - Transmission System - Including Sump
65.5 gal (US)
248 l
Cab
Air Conditioning
18390 Btu/lb
42780 Btu/kWh
18390 Btu/lb
42789 Btu/kWh
18390 Btu/lb
42789 Btu/kWh
Heater / Defroster
43930 Btu
11070 kJ/kg
43930 Btu
11070 kJ/kg
43930 Btu
11070 kJ/kg
ROPS Standards (1)
The ROPS (Rollover Protective Structure) for the 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) cab offered by Caterpillar meets ISO 3471:2008 for operator and ISO 13459:2012 for trainer.
FOPS Standards
The FOPS (Falling Objects Protective Structure) meets ISO 3449:2005 Level II FOPS criteria.
Falling Objects Protective Structure (FOPS) meets ISO 3449:2005 Level II FOPS criteria.
Falling objects protective structure (FOPS) meets ISO 3449:2005 Level II for operator and ISO 13459:2012 Level II FOPS for trainer.
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.
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.
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.
Note (2)
The Auto Mode setting controls water coverage and automatically adjusts to the number of spray heads being used — independent of ground speed. This is an exclusive feature designed into the Cat WDS software to help water more efficiently. Water flow is continually adjusted during operation to conserve water and achieve desired coverage and flow rate.
Power rating applies at 1,800 rpm when tested under the specified condition for the specified standard.
No engine derating required up to 3048 m (10,000 ft) altitude.
Note (3)
Alternatively, manual mode allows the operator to set a water flow rate that is constant regardless of ground speed. This mode is not recommended for daily operation and will reduce watering efficiency and may increase fuel usage.
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).
Meets China Nonroad Stage III emission standards equivalent to U.S. EPA Tier 2.