M Series Small Wheel Loaders | At Work M Series Small Wheel Loaders | At Work
M Series Small Wheel Loaders | Overview M Series Small Wheel Loaders | Overview
Built in Quality: Cat® Small Wheel Loaders Manufactured in Clayton, NC Built in Quality: Cat® Small Wheel Loaders Manufactured in Clayton, NC
Safety and Service Overview | Cat® 926M, 930M, 938M Small Wheel Loader Safety and Service Overview | Cat® 926M, 930M, 938M Small Wheel Loader
Kick-Outs, Snubbing, Wrap-Out and Soft Detents | M Series Small Wheel Loader Operator Tips Kick-Outs, Snubbing, Wrap-Out and Soft Detents | M Series Small Wheel Loader Operator Tips
Secondary Display Navigation | M Series Small Wheel Loader Operator Tips Secondary Display Navigation | M Series Small Wheel Loader Operator Tips
Preventative Maintenance | M Series Small Wheel Loader Operator Tips Preventative Maintenance | M Series Small Wheel Loader Operator Tips
Coded Start Feature/Individual Operator Profiles | M Series Small Wheel Loader Operator Tips Coded Start Feature/Individual Operator Profiles | M Series Small Wheel Loader Operator Tips
Creeper Control | M Series Small Wheel Loader Operator Tips Creeper Control | M Series Small Wheel Loader Operator Tips
Rim Pull | M Series Small Wheel Loader Operator Tips Rim Pull | M Series Small Wheel Loader Operator Tips
Efficient Hystat Operation | M Series Small Wheel Loader Operator Tips Efficient Hystat Operation | M Series Small Wheel Loader Operator Tips
Throttle Lock | M Series Small Wheel Loader Operator Tips Throttle Lock | M Series Small Wheel Loader Operator Tips
Fine Mode Control and Perfect Parallelism | M Series Small Wheel Loader Operator Tips Fine Mode Control and Perfect Parallelism | M Series Small Wheel Loader Operator Tips
Quick Steer | M Series Small Wheel Loader Operator Tips Quick Steer | M Series Small Wheel Loader Operator Tips
Power Train Modes | M Series Small Wheel Loader Operator Tips Power Train Modes | M Series Small Wheel Loader Operator Tips
Cab Controls and Features | M Series Small Wheel Loader Operator Tips Cab Controls and Features | M Series Small Wheel Loader Operator Tips
Hydro-mechanical Applications | M Series Small Wheel Loader Operator Tips Hydro-mechanical Applications | M Series Small Wheel Loader Operator Tips
Third and Fourth Auxiliary Flow | M Series Small Wheel Loader Operator Tips Third and Fourth Auxiliary Flow | M Series Small Wheel Loader Operator Tips
Reversing Fan | M Series Small Wheel Loader Operator Tips Reversing Fan | M Series Small Wheel Loader Operator Tips
Customize Your Experience | M Series Small Wheel Loader Operator Tips Customize Your Experience | M Series Small Wheel Loader Operator Tips
Diesel Exhaust Fluid (DEF) Fill Alarm | M Series Small Wheel Loader Operator Tips Diesel Exhaust Fluid (DEF) Fill Alarm | M Series Small Wheel Loader Operator Tips
Cat® Production Measurement (CPM) | M and K Series Small Wheel Loader Operator Tips Cat® Production Measurement (CPM) | M and K Series Small Wheel Loader Operator Tips
Cat® Production Measurement (CPM) Updates | M and K Series Small Wheel Loader Operator Tips Cat® Production Measurement (CPM) Updates | M and K Series Small Wheel Loader Operator Tips
Differential Lock | M Series Small Wheel Loader Operator Tips Differential Lock | M Series Small Wheel Loader Operator Tips
Tire Pressure Monitoring System | M Series Small Wheel Loader Operator Tips Tire Pressure Monitoring System | M Series Small Wheel Loader Operator Tips
Tire Pressure Monitoring System Updates | M Series Small Wheel Loader Operator Tips Tire Pressure Monitoring System Updates | M Series Small Wheel Loader Operator Tips
Engine Idle Shutdown | M and K Series Small Wheel Loader Operator Tips Engine Idle Shutdown | M and K Series Small Wheel Loader Operator Tips
Continuously Adjustable Creep Mode | M and K Series Small Wheel Loader Operator Tips Continuously Adjustable Creep Mode | M and K Series Small Wheel Loader Operator Tips
Operator ID and Machine Security | M and K Series Small Wheel Loader Operator Tips Operator ID and Machine Security | M and K Series Small Wheel Loader Operator Tips

SPECS SUMMARY

Rated Net Power - 1,800 rpm - SAE J1349 at Minimum Fan Speed (Performance Power Mode: Range 1-4)182 HP (136 kW)
Maximum Rated Gross Power - ISO 14396 (DIN)190 HP (140 kW)
Rated Net Power - 1,800 rpm - ISO 9249 (1977)/EEC 80/1269 at Minimum Fan Speed (Performance Power Mode: Range 1-4)184 HP (137 kW)
Maximum Rated Gross Power - Maximum Engine Speed (Performance Power Mode: Range 1-4)1800 r/min (1800 r/min)
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 engine works in concert with an intelligent hystat power train to deliver fuel efficiency as standard. Meets U.S. EPA Tier 4 Final/EU 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.


Specifications

Rated Net Power - 1,800 rpm - SAE J1349 at Minimum Fan Speed (Performance Power Mode: Range 1-4)182 HP (136 kW)
Maximum Rated Gross Power - ISO 14396 (DIN)190 HP (140 kW)
Rated Net Power - 1,800 rpm - ISO 9249 (1977)/EEC 80/1269 at Minimum Fan Speed (Performance Power Mode: Range 1-4)184 HP (137 kW)
Maximum Rated Gross Power - Maximum Engine Speed (Performance Power Mode: Range 1-4)1800 r/min (1800 r/min)
Engine ModelCat® C7.1
Maximum Rated Gross Power - ISO 14396188 HP (140 kW)
Maximum Rated Gross Power - ISO 14396 (Performance Power Mode: Range 1-4)188 HP (140 kW)
Rated Net Power182 HP (136 kW)
Maximum Rated Gross Power - ISO 14396 (DIN) (Performance Power Mode: Range 1-4)190 HP (140 kW)
Bucket Capacities2.5-5.0 m3 (3.3-6.5 yd3)
Operating Weight36216 lb (16427 kg)
Maximum Gross Power188 HP (140 kW)
Bore4 in (105 mm)
Stroke5 in (135 mm)
Displacement427 in³ (7.01 l)
ROPSISO 3471: 2008
FOPSISO 3449: 2005 LEVEL II
Note (1)Power train is governed by the Caterpillar exclusive Intelligent Power Management system to deliver peak performance and efficiency.
Full Turn Tip Load22107 lb (10028 kg)
Transmission - Gear Box2.9 gal (US) (11 l)
Engine Crankcase5.3 gal (US) (20 l)
Lift Cylinder, Double Acting - Stroke31.1 in (789 mm)
Front AxleFixed
Maximum Rated Gross Power - Maximum Engine Speed (Standard Power Mode: Range 1-3*)1600 r/min (1600 r/min)
Note (1)* 3rd and 4th function flow is fully adjustable from 20% to 100% of maximum flow through the secondary display when equipped.
Maximum Working Pressure - Steering Pump3500 psi (24130 kPa)
Forward and Reverse - Range 317 mile/h (27 km/h)
Maximum Gross Torque - ISO 14396 (Standard Power Mode: Range 1-3*)648 lb/ft (879 N·m)
Tilt Cylinder, Double Acting - Bore Diameter5.9 in (150 mm)
Maximum Rated Gross Power - ISO 14396 (DIN) (Standard Power Mode: Range 1-3*)175 HP (129 kW)
Maximum Net Torque - SAE J1349 (Performance Power Mode: Range 1-4)621 lb/ft (843 N·m)
Maximum Rated Gross Power - ISO 14396 (Standard Power Mode: Range 1-3*)173 HP (129 kW)
Steering Cylinder, Double Acting - Rod Diameter2 in (50 mm)
Lift Cylinder, Double Acting - Rod Diameter2.6 in (65 mm)
Rated Net Power - 1,600 rpm - ISO 9249 (DIN) at Minimum Fan Speed (Standard Power Mode: Range 1-3*)171 HP (126 kW)
Hydraulic System - Including Tank44.9 gal (US) (170 l)
Rear Axles9.2 gal (US) (35 l)
Relief Pressure - Tilt Cylinder4351 psi (30000 kPa)
Maximum Net Torque - SAE J1349 (Standard Power Mode: Range 1-3*)621 lb/ft (843 N·m)
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
Front Axles9.2 gal (US) (35 l)
Cycle Times - Performance (HP+) at 1,800 rpm/Standard Power Mode at 1,600 rpm - Total Cycle Time9.7/10.6 seconds
Maximum Flow - Steering Pump34 gal/min (130 l/min)
Rated Net Power - 1,800 rpm - ISO 9249 (DIN) at Minimum Fan Speed (Performance Power Mode: Range 1-4)186 HP (137 kW)
Maximum Working Pressure - Implement Pump4061 psi (28000 kPa)
Relief Pressure - Tilt Cylinder - 3rd and 4th Function Maximum Working Pressure4061 psi (28000 kPa)
Maximum Flow - Implement Pump - 3rd Function*50 gal/min (190 l/min)
Rear AxleOscillating
Steering Cylinder, Double Acting - Bore Diameter3.1 in (80 mm)
Steering Cylinder, Double Acting - Stroke15.7 in (399 mm)
Note (4)Spark arrestor performance as standard – Meets performance requirements of EN 1834-1.2000 (section 6.4.2 Visual Test).
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
Maximum Gross Torque - ISO 14396 (Performance Power Mode: Range 1-4)648 lb/ft (879 N·m)
Brakes - ServiceOutboard wet disc
Note (1)* Range 4 power and torque is equal to Performance Mode with Caterpillar Power by Range technology.
Maximum Flow - Implement Pump - 4th Function Maximum Flow*42 gal/min (160 l/min)
Rear Axle - Traction Aid - OptionalLimited slip differential
Rear Axle - Oscillation Angle by Tire Size - 23.5 R25± 7 degrees
Rated Net Power - 1,600 rpm - SAE J1349 at Minimum Fan Speed (Standard Power Mode: Range 1-3*)168 HP (125 kW)
Forward and Reverse - Range 425 mile/h (40 km/h)
Diesel Exhaust Fluid (DEF) Tank5 gal (US) (19 l)
Relief Pressure - Tilt Cylinder - 3rd and 4th Function Relief Pressure4351 psi (30000 kPa)
Steering Cycle Times - Full Left to Full Right - Maximum RPM: 90 rpm Steering Wheel Speed2.3 s (2.3 s)
Maximum Net Torque - ISO 9249 (1977)/EEC 80/1269 (Standard Power Mode: Range 1-3*)628 lb/ft (852 N·m)
Maximum Net Torque - ISO 9249 (1977)/EEC 80/1269 (Performance Power Mode: Range 1-4)628 lb/ft (852 N·m)
Tilt Cylinder, Double Acting - Stroke21.9 in (555 mm)
Rated Net Power - 1,600 rpm - ISO 9249 (1977)/EEC 80/1269 at Minimum Fan Speed (Standard Power Mode: Range 1-3*)169 HP (126 kW)
Note (2)Implement system uses a dedicated load sensing variable displacement pump with dual double acting lift cylinders and a single double acting tilt cylinder.
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
Maximum Steering Torque - 0° (Straight Machine)42506 lb/ft (57630 N·m)
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).
Hydraulic Tank23.8 gal (US) (90 l)
Note (1)Declared sound levels per ISO 6396:2008* while in Performance Power Mode: – Standard cab: 68 ±3 dB(A) and Deluxe cab
Fuel Tank51.5 gal (US) (195 l)
Maximum Steering Torque - 40° (Full Turn)31398 lb/ft (42570 N·m)
Note (1)Steering system uses a dedicated load sensing variable displacement pump with dual double acting cylinders.
Note (3)Offset rims available to meet European roading requirements.
Cooling System8.5 gal (US) (32 l)
Steering Cycle Times - Full Left to Full Right - Minimum RPM: Pump Flow Limited3.1 s (3.1 s)
Forward and Reverse - Range 1*1-13 km/h (0.6-8 mph)
Tilt Cylinder, Double Acting - Rod Diameter3.5 in (90 mm)
Brakes - ParkingSpring applied hydraulically released
Note (3)Flow values listed are for a machine running in Performance Power Mode (1,800 rpm).
Maximum Flow - Implement Pump50 gal/min (190 l/min)
EmissionsEngine meets U.S. EPA Tier 4 Final/EU Stage IV emission standards.
Note (2)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.
Lift Cylinder, Double Acting - Bore Diameter4.7 in (120 mm)
Note (2)Flow values listed are for a machine running in Performance Power Mode (1,800 rpm).
Rear Axle - Oscillation Angle by Tire Size - Solid Tires, 750/65, 620/65, Skidder± 7 degrees
Forward and Reverse - Range 28 mile/h (13 km/h)
Rear Axle - Oscillation Angle by Tire Size - 20.5 R25, 550/65, 600/65, 650/65± 10.5 degrees
Note (2)* 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.
Front Axle - Traction Aid - StandardLocking differential
Note (3)No derating required up to 3000 m (10,000 ft) altitude. Auto derate protects hydraulic and transmission systems.
Air ConditioningThe 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.
Note (2)Differential front locking axle can be engaged on the go at full torque up to 20 km/h (12.4 mph) on the 938M.

Benefits and Features

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 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 an average of 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 a pull of the seat mounted joystick trigger. 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.

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 compared to previous models, 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.

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 full color touch screen display.
  • An extra eye on the job site with optional integrated rear object detection and optional* rearview camera.
  • A heated and cooled seat option for added comfort in a wide range of climates.
*Standard in Europe

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

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 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.

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

Operator Environment:

  • Seat, deluxe or premium
  • Deluxe cab (with touch screen display)

Other Options:

  • Autolube
  • High lift linkage
  • Coupler: Fusion™ and ISO 23727
  • Auxiliary hydraulics: 3rd and 4th
  • Window washing access
  • Ride control
  • Fenders: extended and full coverage
  • Counterweights
  • Cold start package
  • Rear object detection
  • Blue Angel certification
  • Beacon
  • LED auxiliary lights
  • CPM – Cat Production Measurement
  • TPM – Tire Pressure Monitoring

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 optional 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.

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.

Standard Equipment

  • Axle seal guards
  • Automatic lift, lower and tilt kickouts
  • Alternator, 115-amp, heavy duty
  • 75 mm (3 in) retractable seat belt, with audible alarm and indicator
  • Large-access enclosure doors

Optional Equipment

  • Antifreeze/coolant, extended-life