938M Wheel Loader

938M 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 IV 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.

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Efficiently Powerful

Experience hybrid-like fuel efficiency with more power when you need it.

Intelligent Power Management

The Caterpillar exclusive Intelligent Power Management system has been further enhanced to monitor operator input and power availability to keep the machine working at peak efficiency and provide the operator with greater customization to suit their application.

Power on Demand

A choice of Power Modes allows you to choose between maximum fuel efficiency or boosted power along with hydraulic speed.

Standard Power Mode

  • Saves up to 10% fuel compared to K Series Cat loader.
  • Delivers equal performance compared to K Series Cat Loader.
  • Reduces cab sound levels down to a whisper quiet 64 dB(A) typical.
  • Biggest gains seen during load and carry, snow removal and roading applications.

Performance Power Mode

  • Enabled at the push of a button (HP+).
  • Boosts engine power by up to 10% and engine speed by over 12%.
  • Increases hydraulic cycle times and productivity.

Six Cylinders of Efficient Power

The Cat C7.1 ACERT engine provides cleaner, quieter operation while delivering superior performance and durability through a high torque, low speed design. The engine meets Tier 4 Final and Stage IV emission standards with a Clean Emissions Module that is designed to manage itself so you can concentrate on your work.

  • No downtime for regeneration with a passive low temperature system that keeps you on the job.
  • Fit for Life Diesel Particulate Filter (DPF) that is designed to exceed the engine overhaul life.
  • Extended fluid fill intervals with minimal use of Diesel Exhaust Fluid (DEF) also referred to as Adblue™ with up to four fuel tank fills per DEF fill.
  • Configurable auto idle shut down based on time and ambient temperature to further reduce fuel burn and keep operating costs low.
  • Spark arrestor performance as standard – Meets performance requirements of EN 1834-1.2000 (section 6.4.2 Visual Test).

Power to the Ground

Lock up and go with fully locking front differential axles that can be engaged on the move at full torque with the pull of a trigger on the seat mounted joystick. Maximize your traction with optional Limited Slip Differential on the rear axle to keep you climbing.

Independent service brakes on front and rear axles provide robust stopping performance while a push button electronic park brake allows you to safely secure the machine with ease.

Work Made Easy

Getting the job done.

Optimized Z-bar Linkage

The Caterpillar patented optimized Z-bar linkage combines the digging efficiency of a traditional Z-bar with integrated tool carrier capabilities for great performance and versatility.

  • Perfect Parallelism functionality available in Fork Mode gives truly predictable performance while high tilt forces throughout the working range help you safely and confidently handle loads with precise control.
  • Visibility to bucket corners and fork tips at ground level remain excellent while sight lines at maximum lift are improved with a Generation II lift arm design.
  • Lift higher and reach further with optional High Lift linkage available on all three models.

Quick Loading Performance Series Buckets

Performance Series Buckets deliver up to 10% higher fill factors and better material retention for significant productivity and fuel efficiency improvements. The buckets feature a longer floor to take a bigger bite of the pile, an open throat to heap higher and curved side bars to help with material retention. This optimized shape is echoed across the General Purpose, Light Material and High Dump bucket families.

Smooth and Predictable Multi-Function Performance

M Series machines feature an electro-hydraulic control system that is governed by the Intelligent Power Management system for peak efficiency. The load-sensing, variable flow system senses work demand and adjusts flow and pressure to match the operators request.

  • Multi-Function without compromise through dedicated hydraulic systems featuring one pump for the Intelligent Hydrostatic drive, a 2nd pump for the implements, and a 3rd pump for the steering system. Drive, Lift and Steer simultaneously with smooth predictable control. The M Series simply does what you ask it to.
  • Programmable in-cab kick-outs are easy to set on the go for tilt, lower and lift. This feature is ideal for applications where the work cycle is repeatable allowing you to quickly return to programmed set points such as ground and level.
  • Fine tune hydro-mechanical performance with fully adjustable 3rd and 4th function flow through the secondary display (when equipped) for a perfect marriage between machine and work tool.

Enjoy All Day Comfort

Best seat on your job site.

Have a Seat and Experience:

  • Seat-mounted controls featuring a low effort joystick for lift and tilt functions along with integrated Forward/Neutral/Reverse switch, differential lock trigger and optional third and fourth auxiliary functions.
  • Superior all around visibility with single piece front windshield, new parabolic external mirrors, redesigned Generation II linkage and clean hydraulic lines routing.
  • Automatic climate control with heated rear glass and external mirrors for a quick defrost.
  • Fully adjustable controls including steering column, joystick and seat suspension.
  • Information at a glance with large primary LCD display and optional secondary display.
  • An extra eye on the job site with optional rearview camera and integrated object detection.
  • A heated and cooled seat option for added comfort in a wide range of climates.

Enjoy coming to work with:

  • A spacious, safe, quiet operator environment featuring ergonomic controls, seat belt notification and optional bluetooth radio with integrated microphone plus an MP3 port.
  • Easy access to vital machine parameters with the optional* secondary display that works in conjunction with the standard soft touch panel to allow real time adjustments to machine features and an integrated help button with over 25 languages.
  • Comfortable soft stops at cylinder end stroke conditions and programmed kick-out points with Caterpillar’s exclusive electro-hydraulic cylinder snubbing.
  • An even smoother ride with optional Ride Control when working unloaded and loaded with excellent material retention.
  • Early starts and late finishes are made easier with optional LED lighting package that includes engine compartment lighting to illuminate the way for checking oil, and coolant level along with re-fueling the machine in dark conditions.

*Standard in Europe

Customize Your Experience

Make it yours.

Work as one with your machine by customizing controls.

Flexible Power Train

A smooth, step-less electronically controlled hydrostatic transmission provides adjustable power to the ground with excellent groundspeed control and customizable feel.

  • Select your Power Train Mode: – Torque Converter (TC) for smooth rollout. – Hystat for aggressive engine braking. – Ice to maximize control on snow and ice. – Default which blends the best of Hystat and Torque Converter characteristic.
  • Reduce tire wear using Rimpull control which enables you to match available tractive power to underfoot conditions.
  • Fine tune ground speed when using work tools such as brooms, snow blowers and brush cutters with Creeper Control.
  • Set Directional Shift Response, soft and smooth for material handling applications or sharp for aggressive operation.

Adjustable Electro-Hydraulic Controls

Easily customize hydraulic performance to meet your needs.

  • Optimize hydraulic modulation with Fine Mode control when working with forks, material handling arms, and large tools.
  • Quicker hydraulic response for fine grading at speed and agriculture applications through Lift and Tilt response settings.
  • Fully adjustable ride control activation speed along with 3rd and 4th function auxiliary flows.

Operator Profiles and Coded Start

  • The M Series Wheel Loaders will remember you and your personal settings with unique operator codes to make this machine truly yours and keep it secure.

Configured for Success

Ready to work for you.

The Way You Want It

A complete range of optional equipment and work tools give you the versatility to configure an M Series wheel loader to be successful in your business. Get with your Cat dealer to configure yours.

Guards:

  • Windshield
  • Tilt cylinder
  • Lights
  • Fender deflectors
  • Drive shaft
  • Hitch
  • Steering cylinders
  • Side power train
  • Lower power train
  • Crank case
  • Rear radiator

Debris Packages:

  • Reversing fan
  • Sealed alternator
  • Turbine precleaner
  • RESPA precleaner

Work Tools:

  • Full range of attachments

Other Options:

  • LED auxiliary lights
  • Engine LED enclosure lights
  • Secondary display*
  • Coupler: Fusion and ISO
  • Auxiliary hydraulics: 3rd and 4th
  • Autolube
  • Windshield washing platform
  • Ride control
  • Elevated breathers: axles and gear box
  • Fenders: extended and full coverage
  • Counterweights: heavy and Log/Agg
  • Cold start package
  • Rear object detection
  • Rearview camera*
  • Blue Angel certification
  • Beacon

*Standard equipment in Europe

Service

Schedule your downtime to maximize your up time.

Get up and running quickly with ground level, daily service access and optional engine compartment lighting. Three large service doors can be opened and closed in any order to give full access to filters and service points. Extended service intervals on hydraulic and power train filters reduce service time and maximize uptime. Additional service features include:

  • Product Link™ PRO standard with three year subscription to VisionLink®.
  • Maintenance reminders through secondary display at scheduled intervals.
  • Fit for Life Diesel Particulate Filter that is designed to exceed the engine overhaul life.
  • Quick fuel filter service with Caterpillar’s exclusive electric fuel priming pump.
  • Jump start studs as standard equipment.
  • Extended cleanouts with single plane cooling system and wide spaced 6 fins per inch coolers as standard.
  • Integrated Autolube (optional) with adjustable greasing frequency.

Customer Support

Unmatched service makes the difference.

Renowned Cat Dealer Support

Rely on your Cat dealer to help you every step of the way with new or used machine sales, rental or rebuild options to meet your business needs.

Maximize your machine uptime with unsurpassed worldwide parts availability, trained technicians and customer support agreements.

Let us earn your business. Experience an M Series Small Wheel Loader and join the Caterpillar family.

Weights

Operating Weight
36216lb

Buckets

Bucket Capacities
2.5-5.0 m3 (3.3-6.5 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)

Engine

Maximum Rated Gross Power: ISO 14396
188hp
Rated Net Power
182hp
Maximum Rated Gross Power: ISO 14396 (DIN)
190hp
Maximum Rated Gross Power – Maximum Engine Speed (Performance Power Mode: Range 1-4)
1800rpm
Maximum Rated Gross Power – ISO 14396 (Performance Power Mode: Range 1-4)
188hp
Maximum Rated Gross Power – ISO 14396 (DIN) (Performance Power Mode: Range 1-4)
190hp
Rated Net Power at 1,800 rpm – SAE J1349 at Minimum Fan Speed (Performance Power Mode: Range 1-4)
182hp
Engine Model
Cat® C7.1 ACERT™
Rated Net Power at 1,800 rpm – ISO 9249 (1977)/EEC 80/1269 at Minimum Fan Speed (Performance Power Mode: Range 1-4)
184hp
Rated Net Power at 1,800 rpm – ISO 9249 (DIN) at Minimum Fan Speed (Performance Power Mode: Range 1-4)
186hp
Maximum Gross Torque – ISO 14396 (Performance Power Mode: Range 1-4)
648lbf-ft
Maximum Net Torque – SAE J1349 (Performance Power Mode: Range 1-4)
621lbf-ft
Maximum Net Torque – ISO 9249 (1977)/EEC 80/1269 (Performance Power Mode: Range 1-4)
628lbf-ft
Maximum Rated Gross Power – Maximum Engine Speed (Standard Power Mode: Range 1-3*)
1600rpm
Maximum Rated Gross Power – ISO 14396 (Standard Power Mode: Range 1-3*)
173hp
Maximum Rated Gross Power – ISO 14396 (DIN) (Standard Power Mode: Range 1-3*)
175hp
Rated Net Power at 1,600 rpm – SAE J1349 at Minimum Fan Speed (Standard Power Mode: Range 1-3*)
168hp
Rated Net Power at 1,600 rpm – ISO 9249 (1977)/EEC 80/1269 at Minimum Fan Speed (Standard Power Mode: Range 1-3*)
169hp
Rated Net Power at 1,600 rpm – ISO 9249 (DIN) at Minimum Fan Speed (Standard Power Mode: Range 1-3*)
171hp
Maximum Gross Torque – ISO 14396 (Standard Power Mode: Range 1-3*)
648lbf-ft
Maximum Net Torque – SAE J1349 (Standard Power Mode: Range 1-3*)
621lbf-ft
Maximum Net Torque – ISO 9249 (1977)/EEC 80/1269 (Standard Power Mode: Range 1-3*)
628lbf-ft
Displacement
427in3
Bore
4in
Emissions
Engine meets U.S. EPA Tier 4 Final/EU Stage IV emission standards.
Stroke
5in
Note
* Range 4 power and torque is equal to Performance Mode with Caterpillar Power by Range technology.
Maximum Gross Power
188hp
Note
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.
Note
No derating required up to 3000 m (10,000 ft) altitude. Auto derate protects hydraulic and transmission systems.
Note
Spark arrestor performance as standard – Meets performance requirements of EN 1834-1.2000 (section 6.4.2 Visual Test).

Steering

Steering Cylinder: Double Acting – Bore Diameter
3.1in
Steering Cylinder: Double Acting – Rod Diameter
2in
Steering Cylinder: Double Acting – Stroke
15.7in
Maximum Flow – Steering Pump
34gal/min
Maximum Working Pressure – Steering Pump
3500psi
Maximum Steering Torque – 0° (Straight Machine)
42506lbf-ft
Maximum Steering Torque – 40° (Full Turn)
31398lbf-ft
Steering Cycle Times (Full Left to Full Right) – Minimum RPM: Pump Flow Limited
3.1seconds
Steering Cycle Times (Full Left to Full Right) – Maximum RPM: 90 rpm Steering Wheel Speed
2.3seconds
Note
Steering system uses a dedicated load sensing variable displacement pump with dual double acting cylinders.
Note
Flow values listed are for a machine running in Performance Power Mode (1,800 rpm).

Loader Hydraulic System

Maximum Flow – Implement Pump
50gal/min
Maximum Flow – Implement Pump: 3rd Function Maximum Flow*
50gal/min
Maximum Flow – Implement Pump: 4th Function Maximum Flow*
42gal/min
Maximum Working Pressure – Implement Pump
4061psi
Relief Pressure – Tilt Cylinder
4351psi
Relief Pressure – Tilt Cylinder: 3rd and 4th Function Maximum Working Pressure
4061psi
Relief Pressure – Tilt Cylinder: 3rd and 4th Function Relief Pressure
4351psi
Lift Cylinder: Double Acting – Bore Diameter
4.7in
Lift Cylinder: Double Acting – Rod Diameter
2.6in
Lift Cylinder: Double Acting – Stroke
31.1in
Tilt Cylinder: Double Acting – Bore Diameter
5.9in
Tilt Cylinder: Double Acting – Rod Diameter
3.5in
Tilt Cylinder: Double Acting – Stroke
21.9in
Cycle Times: Performance (HP+) at 1,800 rpm/Standard Power Mode at 1,600 rpm – Raise (Ground Level to Maximum Lift)
5.5/6.2 seconds
Cycle Times: Performance (HP+) at 1,800 rpm/Standard Power Mode at 1,600 rpm – Dump (at Maximum Lift Height)
1.5/1.7 seconds
Cycle Times: Performance (HP+) at 1,800 rpm/Standard Power Mode at 1,600 rpm – Float Down (Maximum Lift to Ground Level)
2.7/2.7 seconds
Cycle Times: Performance (HP+) at 1,800 rpm/Standard Power Mode at 1,600 rpm – Total Cycle Time
9.7/10.6 seconds
Note
* 3rd and 4th function flow is fully adjustable from 20% to 100% of maximum flow through the secondary display when equipped.
Note
Implement system uses a dedicated load sensing variable displacement pump with dual double acting lift cylinders and a single double acting tilt cylinder.
Note
Flow values listed are for a machine running in Performance Power Mode (1,800 rpm).

Service Refill Capacities

Fuel Tank
51.5gal
Cooling System
8.5gal
Engine Crankcase
5.3gal
Transmission (Gear Box)
2.9gal
Front Axles
9.2gal
Rear Axles
9.2gal
Hydraulic System (Including Tank)
44.9gal
Hydraulic Tank
23.8gal
Diesel Exhaust Fluid (DEF) Tank
5.0gal

Transmission

Forward and Reverse: Range 1*
1-13 km/h (0.6-8 mph)
Forward and Reverse: Range 2
8mph
Forward and Reverse: Range 3
17mph
Forward and Reverse: Range 4
25mph
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).
Note (cont'd)
Factory default is 7 km/h (4.4 mph).

Tires

Standard Size
20.5 R25, radial (L-3)
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)
Other Choices Also Include:
23.5 R25, radial (L-3); 650/65 R25 radial (L-3); Skidder/Agriculture; Flexports Gen II

Cab

ROPS
ISO 3471: 2008
FOPS
ISO 3449: 2005 LEVEL II
Note
Declared sound levels per ISO 6396:2008* while in Performance Power Mode: – Standard cab: 68 ±3 dB(A) and Deluxe cab
Note
* Measurements were conducted with cab doors and windows closed and at 70% of maximum engine cooling fan speed. Sound level may vary at different engine cooling fan speeds.

Axles

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

Operating Specifications

Full Turn Tip Load
22107lb

Power Train

Front Axle
Fixed
Front Axle: Traction Aid (standard)
Locking differential
Rear Axle
Oscillating
Rear Axle: Oscillation Angle by Tire Size – 20.5 R25, 550/65, 600/65, 650/65
± 10.5 degrees
Rear Axle: Oscillation Angle by Tire Size – 23.5 R25
± 7 degrees
Rear Axle: Oscillation Angle by Tire Size – Solid Tires, 750/65, 620/65, Skidder
± 7 degrees
Rear Axle: Traction Aid (optional)
Limited slip differential
Brakes: Service
Outboard wet disc
Brakes: Park
Spring applied hydraulically released
Note
Power train is governed by the Caterpillar exclusive Intelligent Power Management system to deliver peak performance and efficiency.
Note
Differential front locking axle can be engaged on the go at full torque up to 20 km/h (12.4 mph) on the 938M.
Note
Offset rims available to meet European roading requirements.

Standard Equipment

  • Power Train
    • Axle seal guards
    • 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 – Diesel particulate filter (Fit for Life)
    • Coolant protection to –34° C (–29° F)
    • Differential lock in front axle
    • Dry type air cleaner
    • Enclosed wet disc full hydraulic brakes
    • Fuel priming pump, automatic
    • Fuel water separator
    • Hydraulically driven demand cooling fan
    • Intelligent hydrostatic transmission: – Power train modes – Directional Shift Aggressiveness – Rimpull control, adjust wheel torque – Creeper control, adjust ground speed
    • Lubed for life driveshafts
    • Parking brake, electric
    • Wide spaced 6 fins per inch cooling package
    • S·O·SSM sampling ports
    • Throttle lock and maximum speed limiter
  • Hydraulics
    • Automatic lift, lower and tilt kickouts
    • Bucket and Fork Modes, adjustable in-cab
    • Cylinder damping at kickout and end stops
    • Fine Mode control in Fork Mode
    • Hydraulic Response setting
    • Load sensing hydraulics and steering
    • Seat-mounted hydraulic joystick controls
  • Electrical
    • Alternator, 115-amp, heavy duty
    • 12V power supply in cab (2)
    • Batteries, 1,000 CCA (2) 24 volt system
    • Back-up alarm
    • Emergency shutdown switch
    • Heavy duty gear reduction starter
    • Product Link PRO with subscription
    • Remote jump start post
    • Resettable critical function breakers
  • Operator Environment
    • 75 mm (3 in) retractable seat belt, with audible alarm and indicator
    • Automatic temperature control
    • Cab, enclosed and pressurized
    • Cup holders
    • External heated mirrors with lower parabolic
    • Ground level cab door release
    • Gauges: – Digital hour, odometer, tachometer, ground speed and direction indicator – Engine coolant temperature gauge – Fuel and Diesel Exhaust Fluid level – Hydraulic oil temperature gauge
    • Hydraulic control lockout
    • Interior cab lighting, door and dome
    • Interior rearview mirrors (2)
    • Lunch box storage
    • Operator warning system indicators
    • Radio ready speakers
    • Rear window defrost, electric
    • Seat-mounted controls, adjustable
    • Sliding glass on the side windows
    • Column mounted multi function control – lights, wipers, turn signal
    • Suspension seat, fabric
    • Tilt and telescopic steering wheel
    • Wet arm wiper/washer, front and rear
  • Other Standard Equipment
    • Large-access enclosure doors
    • Parallel lift loader linkage
    • Recovery hitch with pin
    • Remote mounted lubrication points
    • Lockable compartments and enclosures

Optional Equipment

  • Antifreeze/coolant, extended-life
  • Auto lube, integrated in secondary display
  • Auxiliary flow, third and fourth function
  • Axles, differential, limited slip, rear
  • Beacon light, strobe
  • Cab, Deluxe (standard In Europe):
    • Automatic blower control
    • Electrically adjustable heated mirrors (2)
    • LED interior lighting
    • Secondary display to adjust settings
  • Ride control adjustable speed activation
  • Preventative maintenance reminders
  • Integrated help function (26 languages)
  • Sunscreen, front and rear
  • Camera, rearview (standard in Europe)
  • Cold Start Package:
    • Ether starting aid, block heater and additional batteries, 1,000 CCA (4 total)
  • Counterweight, (heavy and logger)
  • Coupler, (Fusion and ISO 23727)
  • Debris packages (low, medium, high)
  • Fenders (extended cover and full coverage)
  • Guards
    • Power train, (lower, side, driveshaft and crankcase)
    • Windshield and lights
    • Cylinders, tilt and steering
    • Rear radiator, heavy duty
  • Linkage, high lift
  • Lights, auxiliary, halogen or LED with engine compartment lights
  • Rear Object Detection
  • Radio Packages:
    • Radio ready with Bluetooth
    • Radio, AM/FM with Bluetooth and clock
    • Radio, AM/FM with CD player deluxe, weatherband, Bluetooth and clock
  • Seats:
    • Deluxe seat – fully adjustable fabric air suspension seat with mid seat backrest
    • Premium seat – fully adjustable leather and fabric air suspension with high backrest and air lumbar support. Heated and cooled bottom cushion and backrest.
  • Steering:
    • Dual mode and Secondary
  • Tires:
    • Bias ply, 17.5, 20.5-25, Skidder
    • Radial, 17.5, 20.5, 23.5, 550/65, 600/65, 650/65 R25
    • Solid tires, 620/65, 750/65 Agriculture
  • Work tools