Cat | 938K Wheel Loader

Engine

Maximum Gross Power	190.0 HP 140.0 kW
Engine Model	Cat® C7.1 Cat® C7.1
*Rated Net Power - 1,600 rpm - ISO 9249 (DIN) (Standard Power Mode: Speed Range 1-3)**	173.0 HP 127.0 kW
Rated Net Power	182.0 HP 136.0 kW
*Rated Net Power - 1,600 rpm - SAE J1349 (Standard Power Mode: Speed Range 1-3)**	169.0 HP 126.0 kW
*Maximum Gross Power - 1,600 rpm - ISO 14396 (Standard Power Mode: Range 1-3)**	173.0 HP 129.0 kW
*Maximum Gross Power - 1,600 rpm - ISO 14396 (DIN) (Standard Power Mode: Range 1-3)**	175.0 HP 129.0 kW
Maximum Gross Power - 1,800 rpm - ISO 14396 (Performance Power Mode: Range 1-4)	188.0 HP 140.0 kW
*Maximum Gross Torque - ISO 14396 (Standard Power Mode: Range 1-3)**	660.0 lb/ft 896.0 N·m
*Displacement (Standard Power Mode: Speed Range 1-3)**	427.0 in³ 7.01 l
*Maximum Net Torque - ISO 9249 (1977)/EEC 80/1269 (Standard Power Mode: Range 1-3)**	641.0 lb/ft 870.0 N·m
Emissions	Engine meets Tier 3/Stage IIIA equivalent emission standards. Engine meets Tier 3/Stage IIIA equivalent emission standards.
Maximum Gross Torque - ISO 14396 (Performance Power Mode: Range 1-4)	672.0 lb/ft 912.0 N·m
Rated Net Power - 1,800 rpm - ISO 9249 (DIN) (Performance Power Mode: Speed Range 1-4)	188.0 HP 138.0 kW
*Maximum Net Torque - SAE J1349 (Standard Power Mode: Range 1-3)**	634.0 lb/ft 860.0 N·m
Maximum Net Torque - ISO 9249 (1977)/EEC 80/1269 (Performance Power Mode: Range 1-4)	653.0 lb/ft 886.0 N·m
Maximum Net Torque - SAE J1349 (Performance Power Mode: Range 1-4)	646.0 lb/ft 876.0 N·m
Maximum Gross Power - 1,800 rpm - ISO 14396 (DIN) (Performance Power Mode: Range 1-4)	190.0 HP 140.0 kW
Displacement (Performance Power Mode: Speed Range 1-4)	427.0 in³ 7.01 l
Rated Net Power - 1,800 rpm - SAE J1349 (Performance Power Mode: Speed Range 1-4)	182.0 HP 136.0 kW
Note	Range 4 power is boosted to be the same as Performance Mode. Range 4 power is boosted to be the same as Performance Mode.

Buckets

Bucket Capacities	2.5-3.2 m3 (3.2-4.2 yd3) 2.5-3.2 m3 (3.2-4.2 yd3)
Bucket Capacities - General Purpose	2.5-3.2 m3 (3.2-4.2 yd3) 2.5-3.2 m3 (3.2-4.2 yd3)
Bucket Capacities - Light Material	3.1-5.0 m3 (4.0-6.5 yd3) 3.1-5.0 m3 (4.0-6.5 yd3)

Weights

Operating Weight

34129.0 lb 15485.0 kg

Cab

ROPS	SAE J1040 MAY94, ISO 3471-1994 SAE J1040 MAY94, ISO 3471-1994
FOPS	SAE J/ISO 3449 APR98, Level II, ISO 3449 1992 Level II SAE J/ISO 3449 APR98, Level II, ISO 3449 1992 Level II
Note (1)	Cab and Rollover Protective Structures (ROPS) are standard. Cab and Rollover Protective Structures (ROPS) are standard.
Note (2)	A semi-cab option is available. A semi-cab option is available.

Service Refill Capacities

Axles - Front	9.2 gal (US) 35.0 l
Engine Crankcase	5.2 gal (US) 19.5 l
Fuel Tank	51.5 gal (US) 195.0 l
Hydraulic Tank	23.8 gal (US) 90.0 l
Hydraulic System - Including Tank	44.9 gal (US) 170.0 l
Transmission - Gear Box	2.9 gal (US) 11.0 l
Axles - Rear	9.2 gal (US) 35.0 l
Cooling System	8.5 gal (US) 32.0 l

Steering

Number of Steering Wheel Turns - Full Left to Full Right or Full Right to Full Left	3.1 turns 3.1 turns
Steering Cycle Times - Full Left to Full Right - At 1,800 rpm: 90 rpm Steering Wheel Speed	2.2 s 2.2 s
Maximum Working Pressure - Steering Pump	3500.0 psi 24130.0 kPa
Maximum Flow - Steering Pump	34.0 gal/min 130.0 l/min
Maximum Steering Torque - 40° (Full Turn)	31398.0 lb/ft 42570.0 N·m
Maximum Steering Torque - 0° (Straight Machine)	42506.0 lb/ft 57630.0 N·m
Steering Articulation Angle - Each Direction	40° 40°

Loader Hydraulic System

Maximum Flow - Implement Pump - 3rd Function*	50.0 gal/min 190.0 l/min
Hydraulic Cycle Time - Performance Mode at 1,800 rpm - Float Down, Maximum Lift to Ground Level	2.7 s 2.7 s
Maximum Working Pressure - Implement Pump	4061.0 psi 28000.0 kPa
Hydraulic Cycle Time - Standard Mode at 1,600 rpm - Total Cycle Time	10.6 s 10.6 s
Maximum Flow - Implement Pump	50.0 gal/min 190.0 l/min
Relief Pressure - Tilt Cylinder - 4th Function Maximum Working Pressure	4061.0 psi 28000.0 kPa
Hydraulic Cycle Time - Standard Mode at 1,600 rpm - Dump, at Maximum Lift Height	1.7 s 1.7 s
Maximum Flow - Implement Pump - 4th Function Maximum Flow*	40.0 gal/min 150.0 l/min
Hydraulic Cycle Time - Performance Mode at 1,800 rpm - Dump, at Maximum Lift Height	1.5 s 1.5 s
Hydraulic Cycle Time - Performance Mode at 1,800 rpm - Total Cycle Time	9.7 s 9.7 s
Relief Pressure - Tilt Cylinder - 3rd Function Maximum Working Pressure	4061.0 psi 28000.0 kPa
Hydraulic Cycle Time - Standard Mode at 1,600 rpm - Raise, Ground Level to Maximum Lift	6.2 s 6.2 s
Relief Pressure - Tilt Cylinder	4351.0 psi 30000.0 kPa
Hydraulic Cycle Time - Standard Mode at 1,600 rpm - Float Down, Maximum Lift to Ground Level	2.7 s 2.7 s
Note	Adjustable from 20% to 100% of maximum flow through the secondary display, when equipped. Adjustable from 20% to 100% of maximum flow through the secondary display, when equipped.
Hydraulic Cycle Time - Performance Mode at 1,800 rpm - Raise, Ground Level to Maximum Lift	5.5 s 5.5 s

Axles

Front	Fixed; Open differential (standard); Locking differential (optional) Fixed; Open differential (standard); Locking differential (optional)
Rear	Oscillating ±11 degrees; Open differential (standard); Limited slip differential (optional in some regions) Oscillating ±11 degrees; Open differential (standard); Limited slip differential (optional in some regions)

Transmission

Forward and Reverse - Range 2	8.0 mile/h 13.0 km/h
Forward and Reverse - Range 4	25.0 mile/h 40.0 km/h
Forward and Reverse - Range 3	17.0 mile/h 27.0 km/h
Note	Creeper control allows max. speed range adjustability from 1 km/h (0.6 mph) to 13 km/h (8 mph) in Range 1 through the sec. display. Creeper control allows max. speed range adjustability from 1 km/h (0.6 mph) to 13 km/h (8 mph) in Range 1 through the sec. display.
Notes	Factory default is 7 km/h (4.4 mph). Factory default is 7 km/h (4.4 mph).
Forward and Reverse - Range 1*	1-13 km/h (0.6-8 mph) 1-13 km/h (0.6-8 mph)

Tires

Note (1)	Other tire choices are available. Contact your Cat dealer for details. Other tire choices are available. Contact your Cat dealer for details.
Other Choices Vary by Region (1)	20.5 R25, radial (L-2); 20.5-25 16PR (L-5); 23.5 R25, radial (L-3); 20.5 R25, radial (L-5); 650/65 R25 radial (L-3) 20.5 R25, radial (L-2); 20.5-25 16PR (L-5); 23.5 R25, radial (L-3); 20.5 R25, radial (L-5); 650/65 R25 radial (L-3)
Note (3)	Caterpillar recommends that you consult a tire supplier to evaluate all conditions before selecting a tire model. Caterpillar recommends that you consult a tire supplier to evaluate all conditions before selecting a tire model.
Other Choices Vary by Region (2)	20.5-25 12PR (L-2); Skidder/Agriculture; 20.5-25 12PR (L-3); Flexport™ Gen II 20.5-25 12PR (L-2); Skidder/Agriculture; 20.5-25 12PR (L-3); Flexport™ Gen II
Note (2)	In certain applications, the loader's productive capabilities may exceed the tire's tonnes-km/h (ton-mph) capabilities. In certain applications, the loader's productive capabilities may exceed the tire's tonnes-km/h (ton-mph) capabilities.
Standard Size	20.5 R25, radial (L-3) 20.5 R25, radial (L-3)

Sound

Note (3)	The declared exterior sound power level is 104 dB(A) when the value is measured according to “ISO 6395:2008.” The declared exterior sound power level is 104 dB(A) when the value is measured according to “ISO 6395:2008.”
Note (1)	Declared dynamic operator sound pressure level is 72 dB(A) when “ISO 6396:2008” is used to measure value for an enclosed cab. Declared dynamic operator sound pressure level is 72 dB(A) when “ISO 6396:2008” is used to measure value for an enclosed cab.
Note (2)	The measurement was conducted at 70% of the maximum engine cooling fan speed, with the cab doors and cab windows closed. The measurement was conducted at 70% of the maximum engine cooling fan speed, with the cab doors and cab windows closed.