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938M Small Wheel Loader

The Cat 938M 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. Meets Tier 4 Final/Stage V emission standards with an environmentally friendly, Clean Emission Module designed to manage itself so you can concentrate on your work. Experience the new industry benchmark.

Engine

Maximum Gross Power

188HP

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

427in³

Maximum Rated Gross Power - Maximum Engine Speed (Standard Power Mode: Range 1-3*)

1600r/min

Rated Net Power - 1,800 rpm - SAE J1349 at Minimum Fan Speed (Performance Power Mode: Range 1-4)

183HP

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

642ft·lbf

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

176mhp

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

649ft·lbf

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

188HP

Rated Net Power - 1,600 rpm - ISO 9249 (DIN) at Minimum Fan Speed (Standard Power Mode: Range 1-3*)

172mhp

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

627ft·lbf

Rated Net Power - 1,800 rpm - ISO 9249 (DIN) at Minimum Fan Speed (Performance Power Mode: Range 1-4)

186mhp

Maximum Rated Gross Power - Maximum Engine Speed (Performance Power Mode: Range 1-4)

1800r/min

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

664ft·lbf

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

427in³

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

190mhp

Note (1)

Net power ratings are tested at the reference conditions for the specified standard and denote power available at the flywheel when the engine is equipped with alternator, air cleaner, emission components and fan at specified speed.

Engine Model

Cat C7.1 ACERT**

Rated Net Power - 1,600 rpm - SAE J1349 at Minimum Fan Speed (Standard Power Mode: Range 1-3*)

170HP

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

173HP

Note (2)

*Range 4 power and torque is equal to Performance Mode with Caterpillar Power by Range technology.

Note (3)

**The Cat C7.1 ACERT engine meets Tier 4 Final/Stage V off-highway emission standards.

Rated Net Power - 1,600 rpm - ISO 9249 at Minimum Fan Speed (Standard Power Mode: Range 1-3*)

170HP

Maximum Net Torque - ISO 9249:2007 (Standard Power Mode: Range 1-3*)

628ft·lbf

Rated Net Power - 1,800 rpm - ISO 9249 at Minimum Fan Speed (Performance Power Mode: Range 1-4)

184HP

Maximum Net Torque - ISO 9249:2007 (Performance Power Mode: Range 1-4)

650ft·lbf

Weights

Operating Weight

35778lb

Buckets

Bucket Capacities

2.5-5.0 m3 (3.2-6.5 yd3)

Bucket Capacities - Light Material

3.1-5.0 m³ (4.0-6.5 yd³)

Bucket Capacities - General Purpose

2.5-3.2 m³ (3.2-4.2 yd³)

Cab

ROPS

ISO 3471:2008

FOPS

ISO 3449:2008 Level II

Note (3)

*The measurements were conducted with the cab doors and windows closed and at 70% of the maximum engine cooling fan speed. The sound level may vary at different engine cooling fan speeds.

Note (1)

Cab and Rollover Protective Structures (ROPS) are standard in North America and Europe.

Note (2)

The declared dynamic operator sound pressure levels per ISO 6396:2008*, when properly installed and maintained, are:
– Standard cab: 68 ±3 dB(A)
– Deluxe cab: 66 ±2 dB(A)

Service Refill Capacities

Transmission - Gear Box

2.9gal (US)

Engine Crankcase

5.3gal (US)

Hydraulic System - Including Tank

44.9gal (US)

Rear Axles

9.2gal (US)

Front Axles

9.2gal (US)

Diesel Exhaust Fluid (DEF) Tank

5gal (US)

Note

DEF used in Cat SCR systems must meet the requirements outlined in the International Organization for Standardization (ISO) standard 22241-1.

Hydraulic Tank

23.8gal (US)

Fuel Tank

51.5gal (US)

Cooling System

7.9gal (US)

Loader Hydraulic System

Note (1)

*3rd and 4th function flow is fully 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

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

9.7s

Relief Pressure - Tilt Cylinder

4351psi

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

10.6s

Maximum Working Pressure - Implement Pump

4061psi

Relief Pressure - Tilt Cylinder - 3rd and 4th Function Maximum Working Pressure

4061psi

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

1.7s

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

1.5s

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

6.2s

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

2.7s

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

42gal/min

Relief Pressure - Tilt Cylinder - 3rd and 4th Function Relief Pressure

4351psi

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

2.7s

Maximum Flow - Implement Pump

50gal/min

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

50gal/min

Steering

Maximum Working Pressure - Steering Pump

3500psi

Steering Articulation Angle - Each Direction

40°

Maximum Flow - Steering Pump

34gal/min

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

3.3turns

Maximum Steering Torque - 0° (Straight Machine)

42506ft·lbf

Maximum Steering Torque - 40° (Full Turn)

31398ft·lbf

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

2.3s

Transmission

Forward and Reverse - Range 3

17mile/h

Forward and Reverse - Range 4

25mile/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)

Forward and Reverse - Range 2

8mile/h

Sound

Note (1)

European Union Directive “2000/14/EC”

Average Exterior Sound Pressure (ISO 6395:2008)

101dB(A)

Operator Sound Pressure (ISO 6396:2008)

72dB(A)

Tires

Note (1)

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

Standard Size

20.5 R25, radial (L-3)

Note (2)

In certain applications, the loader’s productive capabilities may exceed the tire’s tonnes-km/h (ton-mph) capabilities.

Other Choices Include

20.5 R25, radial (L-2); 20.5 R25, radial (L-5); 20.5-25 12PR (L-2); 20.5-25 12PR (L-3); 20.5-25 16PR (L-5); 23.5 R25, radial (L-3); 650/65 R25 radial (L-3); Skidder/Agriculture; Solid Tires

Note (3)

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

Axles

Rear

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

Front

Fixed; Locking differential (standard)

Air Conditioning System

Air Conditioning

The air conditioning system on this machine contains the fluorinated greenhouse gas refrigerant R134a (Global Warming Potential = 1430). The system contains 1.9 kg of refrigerant which has a CO2 equivalent of 2.717 metric tonnes.

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
      – Diesel particulate filter
      – Selective Catalyst Reduction
    • 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
    • Product Link PRO with three year subscription
    • 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
  • Eu Standard Equipment
    • Deluxe cab
    • Secondary display
    • Rearview camera

Optional Equipment:

  • Optional Equipment
    • Autolube, integrated in secondary display
    • Auxiliary flow, third and fourth function, adjustable through secondary display
    • Beacon light, strobe
    • Cab, deluxe (standard in Europe, optional in North America)
      – Electrically adjustable external heated mirrors (2)
      – Secondary display to enable features and adjust parameters
      – Sunscreen, front and rear
    • Camera, rearview (standard in Europe)
    • Cold start package
    • Counterweight, (heavy and logger)
    • Coupler, (Fusion and ISO 23727)
    • Debris packages (low, medium, high)
    • Fenders (extended cover and full coverage)
    • Guarding (machine and operator)
    • Linkage, high lift
    • Lights, auxiliary, halogen or LED with engine and DEF compartment lights
    • Object Detection
    • Product Link ELITE with capabilities for software push, data logging, histogram and trend mapping
    • Radio packages
    • 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
    • NOTE: Not all features are available in all regions.

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