938K - 2016

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Overview

The Cat 938K Small Wheel Loader sets the standard for productivity, fuel efficiency and operator comfort. The improved optimized Z-bar loader linkage delivers the quick loading performance of a traditional Z-bar with the parallelism and load handling capability of a tool carrier. A high torque, low speed C7.1 ACERT engine works in concert with an intelligent hystat power train to deliver fuel efficiency as standard.

Engine

Units:
Maximum Gross Power 188.0 hp 140.0 kW Less
Rated Net Power 182.0 hp 136.0 kW Less
Engine Model Cat® C7.1 ACERT™ Cat® C7.1 ACERT™ Less
Maximum Gross Power @ 1,600 rpm – ISO 14396 (Standard Power Mode: Speed Range 1-3*) 173.0 hp 129.0 kW Less
Maximum Gross Power @ 1,600 rpm – ISO 14396 (DIN) (Standard Power Mode: Speed Range 1-3*) 175.0 hp 129.0 kW Less
Rated Net Power @ 1,600 rpm – SAE J1349 (Standard Power Mode: Speed Range 1-3*) 169.0 hp 126.0 kW Less
Rated Net Power @ 1,600 rpm – ISO 9249 (DIN) (Standard Power Mode: Speed Range 1-3*) 173.0 hp 127.0 kW Less
Maximum Gross Torque – ISO 14396 (Standard Power Mode: Speed Range 1-3*) 660.0 lbf-ft 896.0 N·m Less
Maximum Net Torque – SAE J1349 (Standard Power Mode: Speed Range 1-3*) 634.0 lbf-ft 860.0 N·m Less
Maximum Net Torque – ISO 9249 (1977)/EEC 80/1269 (Standard Power Mode: Speed Range 1-3*) 641.0 lbf-ft 870.0 N·m Less
Displacement (Standard Power Mode: Speed Range 1-3*) 427.0 in3 7.01 L Less
Maximum Gross Power @ 1,800 rpm – ISO 14396 (Performance Power Mode: Speed Range 1-4) 188.0 hp 140.0 kW Less
Maximum Gross Power @ 1,800 rpm – ISO 14396 (DIN) (Performance Power Mode: Speed Range 1-4) 190.0 hp 140.0 kW Less
Rated Net Power @ 1,800 rpm – SAE J1349 (Performance Power Mode: Speed Range 1-4) 182.0 hp 136.0 kW Less
Rated Net Power @ 1,800 rpm – ISO 9249 (DIN) (Performance Power Mode: Speed Range 1-4) 188.0 hp 138.0 kW Less
Maximum Gross Torque – ISO 14396 (Performance Power Mode: Speed Range 1-4) 672.0 lbf-ft 912.0 N·m Less
Maximum Net Torque – SAE J1349 (Performance Power Mode: Speed Range 1-4) 646.0 lbf-ft 876.0 N·m Less
Maximum Net Torque – ISO 9249 (1977)/EEC 80/1269 (Performance Power Mode: Speed Range 1-4) 653.0 lbf-ft 886.0 N·m Less
Displacement (Performance Power Mode: Speed Range 1-4) 427.0 in3 7.01 L Less
Emissions Engine meets Tier 3/Stage IIIA equivalent emission standards. Engine meets Tier 3/Stage IIIA equivalent emission standards. Less
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. Less

Buckets

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

Weights

Operating Weight 34129.0 lb 15485.0 kg Less

Steering

Steering Articulation Angle (each direction) 40° 40° Less
Maximum Flow – Steering Pump 34.0 gal/min 130.0 L/min Less
Maximum Working Pressure – Steering Pump 3500.0 psi 24130.0 kPa Less
Maximum Steering Torque: 0 degrees (straight machine) 42506.0 lbf-ft 57630.0 N·m Less
Maximum Steering Torque: 40 degrees (full turn) 31398.0 lbf-ft 42570.0 N·m Less
Steering Cycle Times (full left to full right): At 1,800 rpm: 90 rpm steering wheel speed 2.2 seconds 2.2 seconds Less
Number of Steering Wheel Turns – full left to full right or full right to full left 3.1 turns 3.1 turns Less

Loader Hydraulic System

Maximum Flow – Implement Pump 50.0 gal/min 190.0 L/min Less
Maximum Flow – Implement Pump: 3rd Function Maximum Flow* 50.0 gal/min 190.0 L/min Less
Maximum Flow – Implement Pump: 4th Function Maximum Flow* 40.0 gal/min 150.0 L/min Less
Maximum Working Pressure – Implement Pump 4061.0 psi 28000.0 kPa Less
Relief Pressure – Tilt Cylinder 4351.0 psi 30000.0 kPa Less
Relief Pressure – Tilt Cylinder: 3rd Function Maximum Working Pressure 4061.0 psi 28000.0 kPa Less
Relief Pressure – Tilt Cylinder: 4th Function Maximum Working Pressure 4061.0 psi 28000.0 kPa Less
Hydraulic Cycle Times: Standard Mode At 1,600 rpm – Raise (ground level to maximum lift) 6.2 seconds 6.2 seconds Less
Hydraulic Cycle Times: Standard Mode At 1,600 rpm – Dump (at maximum lift height) 1.7 seconds 1.7 seconds Less
Hydraulic Cycle Times: Standard Mode At 1,600 rpm – Float Down (maximum lift to ground level) 2.7 seconds 2.7 seconds Less
Hydraulic Cycle Times: Standard Mode At 1,600 rpm – Total Cycle Time 10.6 seconds 10.6 seconds Less
Hydraulic Cycle Times: Performance Mode At 1,800 rpm – Raise (ground level to maximum lift) 5.5 seconds 5.5 seconds Less
Hydraulic Cycle Times: Performance Mode At 1,800 rpm – Dump (at maximum lift height) 1.5 seconds 1.5 seconds Less
Hydraulic Cycle Times: Performance Mode At 1,800 rpm – Float Down (maximum lift to ground level) 2.7 seconds 2.7 seconds Less
Hydraulic Cycle Times: Performance Mode At 1,800 rpm – Total Cycle Time 9.7 seconds 9.7 seconds Less
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. Less

Service Refill Capacities

Fuel Tank 51.5 gal 195.0 L Less
Cooling System 8.5 gal 32.0 L Less
Engine Crankcase 5.2 gal 19.5 L Less
Transmission (gearbox) 2.9 gal 11.0 L Less
Axles: Front 9.2 gal 35.0 L Less
Axles: Rear 9.2 gal 35.0 L Less
Hydraulic System (including tank) 44.9 gal 170.0 L Less
Hydraulic Tank 23.8 gal 90.0 L Less

Transmission

Forward and Reverse: Range 1* 1-13 km/h (0.6-8 mph) 1-13 km/h (0.6-8 mph) Less
Forward and Reverse: Range 2 8.0 mph 13.0 km/h Less
Forward and Reverse: Range 3 17.0 mph 27.0 km/h Less
Forward and Reverse: Range 4 25.0 mph 40.0 km/h Less
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. Less
Note (cont'd) Factory default is 7 km/h (4.4 mph). Factory default is 7 km/h (4.4 mph). Less

Cab

ROPS SAE J1040 MAY94, ISO 3471-1994 SAE J1040 MAY94, ISO 3471-1994 Less
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 Less
Note Cab and Rollover Protective Structures (ROPS) are standard. Cab and Rollover Protective Structures (ROPS) are standard. Less
Note A semi-cab option is available. A semi-cab option is available. Less

Tires

Standard Size 20.5 R25, radial (L-3) 20.5 R25, radial (L-3) Less
Other Choices Vary by Region: 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) Less
Other Choices Vary by Region: 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 Less
Note Other tire choices are available. Contact your Cat dealer for details. Other tire choices are available. Contact your Cat dealer for details. Less
Note 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. Less
Note 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. Less

Sound

Note 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. Less
Note 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. Less
Note 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.” Less

Axles

Front Fixed; Open differential (standard); Locking differential (optional) Fixed; Open differential (standard); Locking differential (optional) Less
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) Less

K Series – Making Your Choice Easy:


938K - 2016 Standard Equipment

POWER TRAIN
  • Auto idle shut down feature
  • Cat C7.1 ACERT engine
    • Power modes (Standard and Performance)
    • Power by range (High Power in Range 4)
    • Turbocharged and aftercooled
    • Filtered crankcase breather
  • Coded start (requires secondary display)
  • Coolant protection to –34° C (–29° F)
  • Enclosed wet disc full hydraulic brakes
  • Fuel priming pump, automatic
  • Hydraulically driven demand cooling fan
  • Hydrostatic transmission with electronic control
    • Operator modes (Default, TC, Hystat, and Ice)
    • Directional Shift Aggressiveness (fast, medium, slow)
    • Rimpull control, adjust wheel torque
    • Creeper control, adjust ground speed
  • Parking brake, electric
  • Single plane cooling package wide six fins per inch density
  • Throttle lock and max speed limiter

HYDRAULICS
  • Automatic lift and bucket kickouts, adjustable in-cab
  • Bucket and fork modes, adjustable in-cab
  • Cylinder damping at kickout and mechanical end stops
  • Fine mode control (fast, medium, slow) in fork mode
  • Hydraulic response setting (fast, medium, slow)
  • Hydraulic diagnostic connectors and S·O·SSM ports
  • Load sensing hydraulics and steering

ELECTRICAL
  • Alternator, 115 amp, heavy duty
  • 12V power supply in cab (2)
  • Batteries, 1,000 CCA (2) 24V system, disconnect switch
  • Back-up alarm
  • Emergency shutdown switch
  • Halogen work and roading lights, LED rear tail lights
  • Remote jump start post
  • Resettable main and critical function breakers

OPERATOR ENVIRONMENT
  • 75 mm (3 in) retractable seat belt, with audible alarm and indicator
  • Automatic temperature control
  • External heated mirrors with lower parabolic
  • Hydraulic control lockout
  • Interior cab lighting, door and dome
  • Interior rearview mirrors (2)
  • Lunch box storage
  • Radio ready speakers
  • Rear window defrost, electric
  • Seat-mounted electronic implement controls, adjustable
  • Column mounted multi function control – lights, wipers, turn signal
  • Tilt and telescopic steering wheel
  • Tinted front glass
  • Wet arm wiper/washer, 2-speed and intermittent, front

OTHER STANDARD EQUIPMENT
  • Large-access enclosure doors with adjustable close/open force
  • Parallel lift loader linkage

938K - 2016 Optional Equipment

Auto lube, integrated in secondary display

Auxiliary flow, third and fourth function, adjustable through secondary display

Beacon light, strobe

Cab, deluxe
  • Electrically adjustable external heated mirrors (2)
  • Secondary display to enable features and adjust parameters
  • Sunscreen, front and rear

Camera, rearview

Cold start package

Corrosion protection package

Counterweight, (heavy and logger)

Coupler, (Fusion™ and ISO 23727)

Debris packages (low, medium, high)

Differential lock, front axle

Fenders (extended cover and full coverage)

Guarding (machine and operator)

Linkage, high lift

Lights, auxiliary, halogen or LED with engine compartment lights

Object Detection

Product Link™ PRO and ELITE with capabilities for software push, data logging, histogram and trend mapping

Radio packages

Rear wiper

Ride Control System, adjustable through secondary display

Seats
  • Deluxe seat – fully adjustable fabric air suspension seat with mid backrest and mechanical lumbar support
  • Premium seat – fully adjustable leather and fabric air suspension with high backrest and air lumbar support. Seat is heated and ventilated on bottom cushion and backrest.

Steering
  • Dual mode and secondary

CE Certification

NOTE: Not all features are available in all regions.

Small Wheel Loader Parts Reference Guide

The Small Wheel Loader Parts Reference Guide lists all of the parts you need to repair and maintain your Cat Small Wheel Loader.

Learn More