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938M Small Wheel Loader

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Overview

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.

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Efficiently Powerful

The Cat® C7.1 engine provides cleaner, quieter operation while delivering superior performance and durability through a high torque, low speed design. Caterpillar's exclusive Intelligent Power Management system monitors operator input and power availability to keep the machine working at peak efficiency and provide the operator with greater customization to suit their application.

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

STANDARD POWER MODE

Saves fuel and reduces cab sound levels

Work Made Easy

Enjoy All Day Comfort

A spacious, quiet and comfortable operator environment helps keep you relaxed and productive throughout the day. Experience superior all around visibility with single piece front windshield, redesigned linkage and clean hydraulic lines routing. Seat-mounted controls featuring 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.

Automatic climate control with heated rear glass and external mirrors

Customize Your Experience

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.

Work as one with your machine by customizing your controls.

Select your Power Train Mode
Reduce tire wear using Rimpull
Fine tune ground speed with Creeper Control

Service

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®.

Customer Support

With 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 suppo...

Sustainability

The Cat® C7.1 engine meets U.S. EPA Tier 4 Final, EU Stage V and Korea Tier 5 emission standards.
Engine Idle Management System (EIMS) helps maximize fuel efficiency and reduce greenhouse gas emissions while maintaining machine performance.
Engine Idle Shutdown Timer reduces fuel burn, greenhouse gas emissions and unnecessary idle time by shutting down the machine after a pre-set idling period.

Efficiently Powerful

Saves fuel and reduces cab sound levels
Biggest gains are 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

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

Work Made Easy

OPTIMIZED Z-BAR LINKAGE

The optimized Z-bar linkage combines the digging efficiency of a traditional Z-bar with integrated tool carrier capabilities for great performance and versatility. Visibility to bucket corners and fork tips at ground level remain excellent while sight lines at maximum lift are improved with a Generation III 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.

Enjoy All Day Comfort

Automatic climate control with heated rear glass and external mirrors
Information at a glance with large primary LCD display
Heated and cooled seat option
Optional Ride Control
Exclusive electro-hydraulic cylinder snubbing
An extra eye on the job site with optional integrated rear object detection and optional* rearview camera

*Standard in Europe.

Customize Your Experience

Select your Power Train Mode
Reduce tire wear using Rimpull
Fine tune ground speed with Creeper Control
Adjustable Electo-Hydraulic Controls
Set Directional Shift Response based on job application

Service

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 fans per inch coolers as standard.
Integrated Autolube (optional) with adjustable greasing frequency.

Customer Support

Sustainability

The Cat® C7.1 engine meets U.S. EPA Tier 4 Final, EU Stage V and Korea Tier 5 emission standards.
Engine Idle Management System (EIMS) helps maximize fuel efficiency and reduce greenhouse gas emissions while maintaining machine performance.
Engine Idle Shutdown Timer reduces fuel burn, greenhouse gas emissions and unnecessary idle time by shutting down the machine after a pre-set idling period.
Performance Series Buckets have rounded side boards, a longer floor and open angle to carry more and load quicker so each pass is the most efficient.
Rimpull Control is a quick way to adjust the torque to the tires for less slipping and tire wear.
Cat® Production Measurement provides real-time payload weighing which help you maximize productivity, reduce fuel burn and greenhouse gas emissions, all while improving job site efficiency and lowering costs.
Extended maintenance intervals not only reduce downtime but decrease the amount of fluid and filters that are replaced over the life of the machine.
Power on Demand, transparent to the operator, provides full-time efficiency and power when you need it.
Tire Pressure Monitoring provides real-time tire pressure information to the operator to help increase tire wear and achieve better fuel efficiency and reduced greenhouse gas emissions.
Intelligent Hystat Transmission helps improves control and reduces fuel consumption and greenhouse gas emissions in load and carry applications.
Variable Displacement Pumps match power to load as application requirements change.

Engine

Maximum Gross Power - 1,600 rpm - ISO 14396 (Standard Power Mode: Range 1-3*): 173hp
Maximum Gross Power - 1,800 rpm - ISO 14396 (DIN) (Performance Power Mode: Range 1-4): 190mhp
Maximum Gross Power - 1,800 rpm - ISO 14396 (Performance Power Mode: Range 1-4): 188hp
Maximum Gross Torque - ISO 14396 (Performance Power Mode: Range 1-4): 664ft·lbf
Maximum Rated Gross Power - Maximum Engine Speed (Performance Power Mode: Range 1-4): 1800r/min
Rated Net Power - 1,800 rpm - ISO 9249 (DIN) at Minimum Fan Speed (Performance Power Mode: Range 1-4): 186mhp
Maximum Net Torque - SAE J1349 (Standard Power Mode: Range 1-3*): 627ft·lbf
Rated Net Power - 1,600 rpm - ISO 9249 (DIN) at Minimum Fan Speed (Standard Power Mode: Range 1-3*): 172mhp
Maximum Rated Gross Power - ISO 14396 (Standard Power Mode: Range 1-3*): 173HP
Maximum Net Torque - SAE J1349 (Performance Power Mode: Range 1-4): 649ft·lbf
Maximum Rated Gross Power - ISO 14396 (DIN) (Standard Power Mode: Range 1-3*): 176HP
Maximum Gross Torque - ISO 14396 (Standard Power Mode: Range 1-3*): 642ft·lbf
Rated Net Power - 1,800 rpm - SAE J1349 at Minimum Fan Speed (Performance Power Mode: Range 1-4): 183hp
Maximum Rated Gross Power - Maximum Engine Speed (Standard Power Mode: Range 1-3*): 1600r/min
Displacement (Standard Power Mode: Speed Range 1-3*): 427in³
Maximum Gross Power: 188hp
Maximum Gross Power - 1,600 rpm - ISO 14396 (DIN) (Standard Power Mode: Range 1-3*): 176mhp
Maximum Net Torque - ISO 9249:2007 (Performance Power Mode: Range 1-4): 650ft·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 (Standard Power Mode: Range 1-3*): 628ft·lbf
Rated Net Power - 1,600 rpm - ISO 9249 at Minimum Fan Speed (Standard Power Mode: Range 1-3*): 170hp
Note (3): **The Cat C7.1 ACERT engine meets Tier 4 Final/Stage V off-highway emission standards.
Maximum Rated Gross Power - ISO 14396 (DIN) (Performance Power Mode: Range 1-4): 190HP
Note (2): *Range 4 power and torque is equal to Performance Mode with Caterpillar Power by Range technology.
Maximum Rated Gross Power - ISO 14396 (Performance Power Mode: Range 1-4): 188HP
Rated Net Power - 1,600 rpm - SAE J1349 at Minimum Fan Speed (Standard Power Mode: Range 1-3*): 170hp
Engine Model: Cat C7.1 ACERT**
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.
Displacement (Performance Power Mode: Speed Range 1-4): 427in³

Loader Hydraulic System

Hydraulic Cycle Time - Standard Mode at 1,600 rpm - Float Down, Maximum Lift to Ground Level: 2.7s
Relief Pressure - Tilt Cylinder - 3rd and 4th Function Relief Pressure: 4351psi
Maximum Flow - Implement Pump - 4th Function Maximum Flow*: 42gal/min
Hydraulic Cycle Time - Performance Mode at 1,800 rpm - Float Down, Maximum Lift to Ground Level: 2.7s
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 - Dump, at Maximum Lift Height: 1.5s
Hydraulic Cycle Time - Standard Mode at 1,600 rpm - Dump, at Maximum Lift Height: 1.7s
Relief Pressure - Tilt Cylinder - 3rd and 4th Function Maximum Working Pressure: 4061psi
Maximum Working Pressure - Implement Pump: 4061psi
Hydraulic Cycle Time - Standard Mode at 1,600 rpm - Total Cycle Time: 10.6s
Relief Pressure - Tilt Cylinder: 4351psi
Hydraulic Cycle Time - Performance Mode at 1,800 rpm - Total Cycle Time: 9.7s
Hydraulic Cycle Time - Performance Mode at 1,800 rpm - Raise, Ground Level to Maximum Lift: 5.5s
Note (1): *3rd and 4th function flow is fully adjustable from 20% to 100% of maximum flow through the secondary display, when equipped.
Maximum Flow - Implement Pump - 3rd Function Maximum Flow*: 50gal/min
Maximum Flow - Implement Pump: 50gal/min

Transmission

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 4: 25mile/h
Forward and Reverse - Range 3: 17mile/h
Forward and Reverse - Range 2: 8mile/h
Forward and Reverse - Range 1*: 1-13 km/h (0.6-8 mph)

Steering

Maximum Steering Torque - 0° (Straight Machine): 42506ft·lbf
Number of Steering Wheel Turns - Full Left to Full Right or Full Right to Full Left: 3.3turns
Maximum Flow - Steering Pump: 34gal/min
Steering Articulation Angle - Each Direction: 40°
Maximum Working Pressure - Steering Pump: 3500psi
Steering Cycle Times - Full Left to Full Right - At 1,800 rpm: 90 rpm Steering Wheel Speed: 2.3s
Maximum Steering Torque - 40° (Full Turn): 31398ft·lbf

Axles

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

Service Refill Capacities

Note: DEF used in Cat SCR systems must meet the requirements outlined in the International Organization for Standardization (ISO) standard 22241-1.
Diesel Exhaust Fluid (DEF) Tank: 5gal (US)
Front Axles: 9.2gal (US)
Rear Axles: 9.2gal (US)
Hydraulic System - Including Tank: 44.9gal (US)
Engine Crankcase: 5.3gal (US)
Transmission - Gear Box: 2.9gal (US)
Cooling System: 7.9gal (US)
Fuel Tank: 51.5gal (US)
Hydraulic Tank: 23.8gal (US)

Tires

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)
Note (1): Other tire choices are available. Contact your Cat dealer for details.
Note (3): Caterpillar recommends that you consult a tire supplier to evaluate all conditions before selecting a tire model.
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

Sound

Note (1): European Union Directive “2000/14/EC”
Operator Sound Pressure (ISO 6396:2008): 72dB(A)
Average Exterior Sound Pressure (ISO 6395:2008): 101dB(A)

Cab

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.
ROPS: ISO 3471:2008
FOPS: ISO 3449:2008 Level II
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)
Note (1): Cab and Rollover Protective Structures (ROPS) are standard in North America and Europe.

Weights

Operating Weight: 35778lb

Buckets

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)
Bucket Capacities: 2.5-5.0 m3 (3.2-6.5 yd3)

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.

Sustainability

Recyclability: 94%

Standard/Optional Features

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.