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Engine 
Engine Model
Cat C9.3B
Cat C7.1
Cat C4.4
Net Power - ISO 9249
346 hp
257.9 kW
170 hp
127 kW
Engine Power - ISO 14396
347 hp
259 kW
173 hp
129 kW
Net Power - ISO 9249 (DIN)
351 hp (metric)
351 hp (metric)
173 hp (metric)
173 hp (metric)
Engine Power - ISO 14396 (DIN)
352 hp (metric)
352 hp (metric)
175 hp (metric)
175 hp (metric)
Bore
4.53 in
115 mm
4 in
105 mm
Stroke
5.87 in
149 mm
5 in
127 mm
Biodiesel Capability
Up to B20¹
B20¹
Displacement
567.5 in³
9.3 l
428 in³
7.01 l
269 in³
4.4 l
Emissions
Meets U.S. EPA Tier 4 Final and EU Stage V emission standards.
Meets U.S. EPA Tier 4 Final, EU Stage V, and Japan 2014 emission standards.
Note (1)
Net power advertised is the power available at the flywheel when the engine is equipped with fan, air intake system, exhaust system, and alternator with engine speed at 1,900 rpm. Advertised power is tested per the specified standard in effect at the time of manufacture.
Net power advertised is the power available at the flywheel when the engine is equipped with fan, air intake system, exhaust system, and alternator with engine speed at 2,200 rpm. Advertised power is tested per the specified standard in effect at time of manufacture.
Note (2)
¹Cat diesel engines are required to use ULSD (ultra-low sulfur diesel fuel with 15 ppm of sulfur or less) and are compatible* with ULSD blended with the following lower-carbon intensity fuels** up to: 20% biodiesel FAME (fatty acid methyl ester)*** 100% renewable diesel, HVO (hydrotreated vegetable oil) and GTL (gas-to-liquid) fuels Refer to guidelines for successful application. Please consult your Cat dealer or “Caterpillar Machine Fluids Recommendations” (SEBU6250) for details. *While Caterpillar engines are compatible with these alternative fuels, some regions may not allow their use. ** Tailpipe greenhouse gas emissions from lower-carbon intensity fuels are essentially the same as traditional fuels. *** Engines with no aftertreatment devices are compatible with higher blends, up to 100% biodiesel (for use of blends higher than 20% biodiesel, consult your Cat dealer).
¹Cat diesel engines are required to use ULSD (ultra-low sulfur diesel fuel with 15 ppm of sulfur or less) and are compatible* with ULSD blended with the following lower-carbon intensity fuels** up to: 20% biodiesel FAME (fatty acid methyl ester)*** 100% renewable diesel, HVO (hydrotreated vegetable oil) and GTL (gas-to-liquid) fuels Refer to guidelines for successful application. Please consult your Cat dealer or “Caterpillar Machine Fluids Recommendations” (SEBU6250) for details. *While Caterpillar engines are compatible with these alternative fuels, some regions may not allow their use. ** Tailpipe greenhouse gas emissions from lower-carbon intensity fuels are essentially the same as traditional fuels. *** Engines with no aftertreatment devices are compatible with higher blends, up to 100% biodiesel (for use of blends higher than 20% biodiesel, consult your Cat dealer).
Drive
Maximum Travel Speed
2.7 mile/h
4.3 km/h
3.5 mile/h
5.7 km/h
Maximum Drawbar Pull
84,978 lbf
378 kN
70320 lbf
313 kN
45,187 lbf
201 kN
Hydraulic System
Main System - Maximum Flow
153.4 gpm
581 L/min
113 gpm
429 L/min
Maximum Pressure - Equipment
5076 psi
35000 kPa
5076 psi
35000 kPa
Maximum Pressure - Equipment - Lift Mode
5511 psi
38000 kPa
5511 psi
38000 kPa
Maximum Pressure - Travel
5076 psi
35000 kPa
5076 psi
35000 kPa
Maximum Pressure - Swing
4119 psi
28400 kPa
3989 psi
27500 kPa
Swing Mechanism
Swing Speed
6.1 r/min
6.1 r/min
11 r/min
11 r/min
Maximum Swing Torque
151938 lbf·ft
206 kN·m
60,480 lbf·ft
82 kN·m
Weights
General Forestry
106920 lb
48500 kg
59,700 lb
27100 kg
Note (1)
Net power advertised is the power available at the flywheel when the engine is equipped with fan, air intake system, exhaust system, and alternator with engine speed at 1,900 rpm. Advertised power is tested per the specified standard in effect at the time of manufacture.
Net power advertised is the power available at the flywheel when the engine is equipped with fan, air intake system, exhaust system, and alternator with engine speed at 2,200 rpm. Advertised power is tested per the specified standard in effect at time of manufacture.
Log Loader (U/U)
108690 lb
49300 kg
63,300 lb
28700 kg
Note (2)
¹Cat diesel engines are required to use ULSD (ultra-low sulfur diesel fuel with 15 ppm of sulfur or less) and are compatible* with ULSD blended with the following lower-carbon intensity fuels** up to: 20% biodiesel FAME (fatty acid methyl ester)*** 100% renewable diesel, HVO (hydrotreated vegetable oil) and GTL (gas-to-liquid) fuels Refer to guidelines for successful application. Please consult your Cat dealer or “Caterpillar Machine Fluids Recommendations” (SEBU6250) for details. *While Caterpillar engines are compatible with these alternative fuels, some regions may not allow their use. ** Tailpipe greenhouse gas emissions from lower-carbon intensity fuels are essentially the same as traditional fuels. *** Engines with no aftertreatment devices are compatible with higher blends, up to 100% biodiesel (for use of blends higher than 20% biodiesel, consult your Cat dealer).
¹Cat diesel engines are required to use ULSD (ultra-low sulfur diesel fuel with 15 ppm of sulfur or less) and are compatible* with ULSD blended with the following lower-carbon intensity fuels** up to: 20% biodiesel FAME (fatty acid methyl ester)*** 100% renewable diesel, HVO (hydrotreated vegetable oil) and GTL (gas-to-liquid) fuels Refer to guidelines for successful application. Please consult your Cat dealer or “Caterpillar Machine Fluids Recommendations” (SEBU6250) for details. *While Caterpillar engines are compatible with these alternative fuels, some regions may not allow their use. ** Tailpipe greenhouse gas emissions from lower-carbon intensity fuels are essentially the same as traditional fuels. *** Engines with no aftertreatment devices are compatible with higher blends, up to 100% biodiesel (for use of blends higher than 20% biodiesel, consult your Cat dealer).
Service Refill Capacities
Fuel Tank
262 gal (US)
990 l
91.1 gal (US)
345 l
Cooling System
5 gal (US)
20 l
7.9 gal (US)
30 l
6.6 gal (US)
25 l
Engine Oil
8 gal (US)
32 l
4 gal (US)
15 l
Swing Drive
3 gal (US)
10.5 l
2.4 gal (US)
9 l
1.3 gal (US)
5 l
Final Drive - Each
3 gal (US)
9.5 l
2.9 gal (US)
11 l
1.3 gal (US)
5 l
Hydraulic System - Including Tank
101 gal (US)
383 l
65.6 gal (US)
248 l
Hydraulic Tank
49 gal (US)
185 l
46.2 gal (US)
175 l
34.1 gal (US)
129 l
DEF Tank
21 gal (US)
80 l
12.2 gal (US)
46 l
6.9 gal (US)
26 l
Working Ranges
Max Reach at Stick Nose at Ground Level - General Forestry Road Builder
38.3 ft
11690 mm
32.3 ft
9830 mm
Max Reach at Grapple Mount on Heel at Ground Level - Log Loader Under/Under
43.1 ft
13130 mm
36 ft
10970 mm
Dimensions
Note (1)
Net power advertised is the power available at the flywheel when the engine is equipped with fan, air intake system, exhaust system, and alternator with engine speed at 1,900 rpm. Advertised power is tested per the specified standard in effect at the time of manufacture.
Net power advertised is the power available at the flywheel when the engine is equipped with fan, air intake system, exhaust system, and alternator with engine speed at 2,200 rpm. Advertised power is tested per the specified standard in effect at time of manufacture.
Shipping Height - Tilted Cab
12 ft
3670 mm
11.3 ft
3420 mm
Handrail Height
11.5 ft
3510 mm
9.8 ft
2990 mm
Length: General Forestry - Boom Stretched Out
50.6 ft
15430 mm
38.3 ft
11690 mm
Length: Log Loader - Boom Stretched Out
55.6 ft
16930 mm
44.1 ft
13430 mm
Tail Swing Radius
12.4 ft
3790 mm
137.8 in
3501 mm
9.3 ft
2830 mm
Counterweight Clearance
4.9 ft
1500 mm
3.4 ft
1040 mm
Ground Clearance
2.5 ft
760 mm
30.5 in
774 mm
Track Length
18 ft
5490 mm
198.2 in
5035 mm
14.7 ft
4460 mm
Track Length to Center of Rollers
14.6 ft
4450 mm
11.9 ft
3620 mm
Track Gauge
9.6 ft
2920 mm
110.6 in
2809 mm
7.8 ft
2380 mm
Transport Width
12 ft
3650 mm
11 ft
3350 mm
Air Conditioning System
Note (1)
Net power advertised is the power available at the flywheel when the engine is equipped with fan, air intake system, exhaust system, and alternator with engine speed at 1,900 rpm. Advertised power is tested per the specified standard in effect at the time of manufacture.
Net power advertised is the power available at the flywheel when the engine is equipped with fan, air intake system, exhaust system, and alternator with engine speed at 2,200 rpm. Advertised power is tested per the specified standard in effect at time of manufacture.