406

938K Small Wheel Loader

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 engine works in concert with an intelligent hystat power train to deliver fuel efficiency as standard.

  • Specifications

  • Standard/Optional Equipment

  • 360° Tours

  • Catalog

Engine

Maximum Gross Power

188hp

Maximum Gross Power - 1,800 rpm - ISO 14396 (Performance Power Mode: Range 1-4)

188hp

Engine Model

Cat® C7.1

Maximum Gross Power - 1,600 rpm - ISO 14396 (Standard Power Mode: Range 1-3*)

173hp

Note (2)

*Range 4 power is boosted to be the same as Performance Mode.

Note (1)

Net power shown is the power available at the flywheel when the engine is equipped with alternator and air cleaner.

Maximum Gross Power - 1,800 rpm - ISO 14396 (metric) (Performance Power Mode: Range 1-4)

190 hp

Net Power - 1,800 rpm - SAE J1349 (Performance Power Mode: Range 1-4)

182hp

Net Power - 1,600 rpm - ISO 9249 (metric) (Standard Power Mode: Range 1-3*)

173 hp

Net Power - 1,800 rpm - ISO 9249 (metric) (Performance Power Mode: Range 1-4)

188 hp

Net Power - 1,600 rpm - SAE J1349 (Standard Power Mode: Range 1-3*)

169hp

Maximum Gross Power - 1,600 rpm - ISO 14396 (metric) (Standard Power Mode: Range 1-3*)

175 hp

Maximum Gross Torque - ISO 14396 (Standard Power Mode: Range 1-3*)

660lb/ft

Displacement (Standard Power Mode: Speed Range 1-3*)

427in³

Maximum Net Torque - ISO 9249 (1977)/EEC 80/1269 (Standard Power Mode: Range 1-3*)

641lb/ft

Emissions

Engine meets U.S. EPA Tier 3/EU Stage IIIA/Brazil MAR-1 equivalent emission standards.

Maximum Gross Torque - ISO 14396 (Performance Power Mode: Range 1-4)

672lb/ft

Maximum Net Torque - SAE J1349 (Standard Power Mode: Range 1-3*)

634lb/ft

Maximum Net Torque - ISO 9249 (1977)/EEC 80/1269 (Performance Power Mode: Range 1-4)

653lb/ft

Maximum Net Torque - SAE J1349 (Performance Power Mode: Range 1-4)

646lb/ft

Displacement (Performance Power Mode: Speed Range 1-4)

427in³

Buckets

Bucket Capacities

2.5-5.0 m³ (3.2-6.5 yd³)

Bucket Capacities - General Purpose

2.5-3.2 m³ (3.2-4.2 yd³)

Bucket Capacities - Light Material

3.1-5.0 m³ (4.0-6.5 yd³)

Weights

Operating Weight

33689lb

Cab

ROPS

SAE J1040 MAY94, ISO 3471-1994

FOPS

SAE J/ISO 3449 APR98, Level II, ISO 3449 1992 Level II

Note (1)

Cab and Rollover Protective Structures (ROPS) are standard.

Note (2)

A semi-cab option is available.

Service Refill Capacities

Axles - Front

9.2gal (US)

Engine Crankcase

5.2gal (US)

Fuel Tank

51.5gal (US)

Hydraulic Tank

23.8gal (US)

Hydraulic System - Including Tank

44.9gal (US)

Transmission - Gear Box

2.9gal (US)

Axles - Rear

9.2gal (US)

Cooling System

8.5gal (US)

Steering

Number of Steering Wheel Turns - Full Left to Full Right or Full Right to Full Left

3.1turns

Steering Cycle Times - Full Left to Full Right - At 1,800 rpm: 90 rpm Steering Wheel Speed

2.2s

Maximum Working Pressure - Steering Pump

3500psi

Maximum Flow - Steering Pump

34gal/min

Maximum Steering Torque - 40° (Full Turn)

31398lb/ft

Maximum Steering Torque - 0° (Straight Machine)

42506lb/ft

Steering Articulation Angle - Each Direction

40°

Axles

Front

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

Rear

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

Loader Hydraulic System

Hydraulic Cycle Time - Performance Mode at 1,800 rpm - Float Down, Maximum Lift to Ground Level

2.7s

Maximum Working Pressure - Implement Pump

4061psi

Hydraulic Cycle Time - Standard Mode at 1,600 rpm - Total Cycle Time

10.6s

Maximum Flow - Implement Pump

50gal/min

Relief Pressure - Tilt Cylinder - 4th Function Maximum Working Pressure

4061psi

Hydraulic Cycle Time - Standard Mode at 1,600 rpm - Dump, at Maximum Lift Height

1.7s

Maximum Flow - Implement Pump - 4th Function Maximum Flow*

40gal/min

Hydraulic Cycle Time - Performance Mode at 1,800 rpm - Dump, at Maximum Lift Height

1.5s

Hydraulic Cycle Time - Performance Mode at 1,800 rpm - Total Cycle Time

9.7s

Relief Pressure - Tilt Cylinder - 3rd Function Maximum Working Pressure

4061psi

Hydraulic Cycle Time - Standard Mode at 1,600 rpm - Raise, Ground Level to Maximum Lift

6.2s

Relief Pressure - Tilt Cylinder

4351psi

Hydraulic Cycle Time - Standard Mode at 1,600 rpm - Float Down, Maximum Lift to Ground Level

2.7s

Note

*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

5.5s

Maximum Flow - Implement Pump - 3rd Function Maximum Flow*

50gal/min

Transmission

Forward and Reverse - Range 2

8mile/h

Forward and Reverse - Range 4

25mile/h

Forward and Reverse - Range 3

17mile/h

Note

*Creeper control allows maximum speed range adjustability from 1 km/h (0.6 mph) to 13 km/h (8 mph) in Range 1 through the secondary display, when equipped. Factory default is 7 km/h (4.4 mph).

Forward and Reverse - Range 1*

1-13 km/h (0.6-8 mph)

Tires

Note (1)

Other tire choices are available. Contact your Cat dealer for details.

Other Choices Vary by Region (1)

20.5-25 16 PR (L-3)

Note (3)

Caterpillar recommends that you consult a tire supplier to evaluate all conditions before selecting a tire model.

Note (2)

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)

Sound

Note (3)

The declared exterior sound power level is 104 dB(A) when the value is measured according to the dynamic test procedures and the conditions that are specified in “ISO 6395:2008.”

Note (1)

The declared dynamic operator sound pressure level is 72 dB(A) when “ISO 6396:2008” is used to measure the 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 cab was properly installed and maintained. The sound level may vary at different engine cooling fan speeds.

POWER TRAIN

Auto idle shut down feature

Cat C7.1 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 mirrors with lower parabolic

Hydraulic control lockout

Interior cab lighting, door and dome

Interior rear view mirrors (2)

Lunch box storage

Radio ready speakers

Seat-mounted electronic implement controls, adjustable

Column mounted multi function control – lights, wipers, turn signal

Tilt and telescopic steering wheel

Tinted front glass

OTHER STANDARD EQUIPMENT

Large-access enclosure doors with adjustable close/open force

Parallel lift loader linkage

POWER TRAIN

Auto idle shut down feature

Cat C7.1 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 mirrors with lower parabolic

Hydraulic control lockout

Interior cab lighting, door and dome

Interior rear view mirrors (2)

Lunch box storage

Radio ready speakers

Seat-mounted electronic implement controls, adjustable

Column mounted multi function control – lights, wipers, turn signal

Tilt and telescopic steering wheel

Tinted front glass

OTHER STANDARD EQUIPMENT

Large-access enclosure doors with adjustable close/open force

Parallel lift loader linkage

POWER TRAIN

Auto idle shut down feature

Cat C7.1 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 mirrors with lower parabolic

Hydraulic control lockout

Interior cab lighting, door and dome

Interior rear view mirrors (2)

Lunch box storage

Radio ready speakers

Seat-mounted electronic implement controls, adjustable

Column mounted multi function control – lights, wipers, turn signal

Tilt and telescopic steering wheel

Tinted front glass

OTHER STANDARD EQUIPMENT

Large-access enclosure doors with adjustable close/open force

Parallel lift loader linkage

POWER TRAIN

Auto idle shut down feature

Cat C7.1 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 mirrors with lower parabolic

Hydraulic control lockout

Interior cab lighting, door and dome

Interior rear view mirrors (2)

Lunch box storage

Radio ready speakers

Seat-mounted electronic implement controls, adjustable

Column mounted multi function control – lights, wipers, turn signal

Tilt and telescopic steering wheel

Tinted front glass

OTHER STANDARD EQUIPMENT

Large-access enclosure doors with adjustable close/open force

Parallel lift loader linkage

POWER TRAIN

Auto idle shut down feature

Cat C7.1 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 mirrors with lower parabolic

Hydraulic control lockout

Interior cab lighting, door and dome

Interior rear view mirrors (2)

Lunch box storage

Radio ready speakers

Seat-mounted electronic implement controls, adjustable

Column mounted multi function control – lights, wipers, turn signal

Tilt and telescopic steering wheel

Tinted front glass

OTHER STANDARD EQUIPMENT

Large-access enclosure doors with adjustable close/open force

Parallel lift loader linkage

OPTIONAL EQUIPMENT

Auto lube, integrated in secondary display

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

Beacon light, strobe

Cab, deluxe<ul><li>Camera, roof mounted, front view with separate display*</li><li>Rear window defroster (standard in Europe)</li><li>Secondary display to adjust settings (standard in Europe)</li><li>Sunscreen, front and rear</li><li>Wet arm wiper/washer, front and rear</li></ul>*Forward facing camera system may be required for local EU requirements. Consult your local Cat dealer for additional information.

Camera, rear view (standard in Europe)

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

Lights, LED front roading

Load check valves

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<ul><li>Deluxe seat – fully adjustable fabric air suspension seat with mid backrest and mechanical lumbar support</li><li>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.</li></ul>

Steering<ul><li>Dual mode and secondary</li></ul>

CE Certification (standard in Europe)

NOTE: Not all features are available in all regions.

360° Exterior Tour

360° Interior Tour

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