938M Aggregate Handler Small Wheel Loader
Engine
- Maximum Gross Power
- 188HP
- Bore
- 4in
- Stroke
- 5in
- Displacement
- 427in³
- Note (4)
- Spark arrester performance as standard – Meets the performance requirements of EN 1834-1.2000 (section 6.4.2 Visual Test).
- Note (3)
- No derating required up to 3000 m (10,000 ft) altitude. Auto derate protects hydraulic and transmission systems.
- 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.
- Note (1)
- * Range 4 power and torque is equal to Performance Mode with Caterpillar Power by Range technology.
- Emissions
- Engine meets U.S. EPA Tier 4 Final/EU Stage IV emission standards.
- Engine Model
- Cat® C7.1 ACERT™
- Rated Net Power
- 182HP
- Maximum Rated Gross Power - ISO 14396
- 188HP
- Maximum Rated Gross Power - ISO 14396 (DIN)
- 190HP
- Maximum Rated Gross Power - Maximum Engine Speed (Performance Power Mode: Range 1-4)
- 1800r/min
- 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 - 1,800 rpm - SAE J1349 at Minimum Fan Speed (Performance Power Mode: Range 1-4)
- 182HP
- Rated Net Power - 1,800 rpm - ISO 9249 (1977)/EEC 80/1269 at Minimum Fan Speed (Performance Power Mode: Range 1-4)
- 184HP
- Rated Net Power - 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)
- 648ft·lbf
- Maximum Net Torque - SAE J1349 (Performance Power Mode: Range 1-4)
- 621ft·lbf
- Maximum Net Torque - ISO 9249 (1977)/EEC 80/1269 (Performance Power Mode: Range 1-4)
- 628ft·lbf
- Maximum Rated Gross Power - Maximum Engine Speed (Standard Power Mode: Range 1-3*)
- 1600r/min
- 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 - 1,600 rpm - SAE J1349 at Minimum Fan Speed (Standard Power Mode: Range 1-3*)
- 168HP
- Rated Net Power - 1,600 rpm - ISO 9249 (1977)/EEC 80/1269 at Minimum Fan Speed (Standard Power Mode: Range 1-3*)
- 169HP
- Rated Net Power - 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*)
- 648ft·lbf
- Maximum Net Torque - SAE J1349 (Standard Power Mode: Range 1-3*)
- 621ft·lbf
- Maximum Net Torque - ISO 9249 (1977)/EEC 80/1269 (Standard Power Mode: Range 1-3*)
- 628ft·lbf
Weights
- Operating Weight
- 36075lb
Buckets
- Bucket Capacities
- 2.9-3.2 m3 (3.8-4.2 yd3)
Cab
- ROPS
- ISO 3471: 2008, FOPS: ISO 3449: 2005 LEVEL II
- Note (2)
- The Blue Angel environmental label is an optional attachment for Europe only.
- Note (1)
- * Measurements were conducted at 70% of maximum engine cooling fan speed. Sound level may vary at different engine cooling fan speeds. The cab was properly installed and maintained. The measurements were conducted with the cab doors and the cab windows cl
- Declared Sound Levels
- – Operator Sound Pressure Level (ISO 6396:2008): 68 dB(A)* – Exterior Sound Power Level (ISO 6395:2008): 101 dB(A)*
Steering
- Note (1)
- Steering system uses a dedicated load sensing variable displacement pump with dual double acting cylinders.
- Maximum Working Pressure - Steering Pump
- 3500psi
- Maximum Steering Torque - 0° (Straight Machine)
- 42506ft·lbf
- Maximum Flow - Steering Pump
- 34gal/min
- Maximum Steering Torque - 40° (Full Turn)
- 31398ft·lbf
- Steering Cycle Times - Full Left to Full Right - Minimum RPM: Pump Flow Limited
- 3.1s
- Steering Cycle Times - Full Left to Full Right - Maximum RPM: 90 rpm Steering Wheel Speed
- 2.3s
- Note (2)
- Flow values listed are for a machine running in Performance Power Mode (1,800 rpm).
- Steering Cylinder, Double Acting - Bore Diameter
- 3.1in
- Steering Cylinder, Double Acting - Rod Diameter
- 2in
- Steering Cylinder, Double Acting - Stroke
- 15.7in
Service Refill Capacities
- Transmission - Gear Box
- 2.9gal (US)
- Hydraulic Tank
- 23.8gal (US)
- Hydraulic System - Including Tank
- 44.9gal (US)
- Fuel Tank
- 51.5gal (US)
- Engine Crankcase
- 5.3gal (US)
- Cooling System
- 8.5gal (US)
- Diesel Exhaust Fluid (DEF) Tank
- 5gal (US)
- Front Axles
- 9.2gal (US)
- Rear Axles
- 9.2gal (US)
Power Train
- Rear Axle
- Oscillating
- Note (3)
- **Differential front locking axle can be engaged on the go at full torque to 20 km/h (12.4 mph) on the 938M.
- Note (2)
- Offset rims available to meet European roading requirements.
- Note (1)
- Power train is governed by the Caterpillar exclusive Intelligent Power Management system to deliver peak performance and efficiency.
- Front Axle - Traction Aid**
- Locking differential (standard)
- Front Axle
- Fixed
- Brakes - Service
- Outboard wet disc
- Brakes - Parking
- Spring applied hydraulically released
- 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 - Traction Aid - Optional
- Limited slip differential
Operating Specifications
- Full Turn Tip Load
- 23466lb
Loader Hydraulic System
- Tilt Cylinder, Double Acting - Stroke
- 21.9in
- Tilt Cylinder, Double Acting - Rod Diameter
- 3.5in
- Tilt Cylinder, Double Acting - Bore Diameter
- 5.9in
- Relief Pressure - Tilt Cylinder - 3rd Function Relief Pressure
- 4351psi
- Relief Pressure - Tilt Cylinder - 3rd Function Maximum Working Pressure
- 4061psi
- Relief Pressure - Tilt Cylinder
- 4351psi
- Note (3)
- * 3rd function flow is fully adjustable from 20% to 100% of maximum flow through the secondary display when equipped.
- Note (2)
- Flow values listed are for a machine running in Performance Power Mode (1,800 rpm)
- Maximum Working Pressure - Implement Pump
- 4061psi
- Maximum Flow - Implement Pump
- 50gal/min
- Lift Cylinder, Double Acting - Stroke
- 31.1in
- Lift Cylinder, Double Acting - Rod Diameter
- 2.6in
- Lift Cylinder, Double Acting - Bore Diameter
- 4.7in
- Maximum Flow - Implement Pump - 3rd Function*
- 50gal/min
- 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 (1)
- Implement system uses a dedicated load sensing variable displacement pump with dual double acting lift cylinders and a single double acting tilt cylinder.
Transmission
- Forward and Reverse - Range 1*
- 1-13 km/h (0.6-8 mph)
- Forward and Reverse - Range 2
- 8mile/h
- 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).
Application Specific Configuration
- Increased Payload
Additional counterweight improves stability without reducing ground clearance or departure angle to maximize performance.
- Long Life Sand and Gravel Buckets
Performance Series Buckets deliver higher fill factors and better material retention for significant productivity and fuel efficiency improvements. The buckets feature a long floor, open throat, curved side bars and additional serviceable wear plates including corner guards.
- Protect your Power Train
Increase your fording depths with optional elevated breathers. Remote mounted high on the machine for the front and rear axles and hydrostatic gear box. Allows settling pond clean out without contamination.
Customize Your Experience
Work as one with your machine by customizing the controls.
- Flexible Power Train
A smooth, stepless 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. – Default mode which blends the best of Hystat and Torque Converter characteristics.
- Reduce tire wear using Rimpull control which enables you to match available tractive power to underfoot conditions.
- Set Directional Shift Response, soft and smooth for material handling applications or sharp for aggressive operation.
- Adjustable Electro Hydraulic Controls
Easily customize the hydraulic performance through secondary display to optimize your efficiency.
- Optimize hydraulic modulation with Fine Mode control when working with forks.
- Quicker hydraulic response for fine grading at speed and quick functions through Lift and Tilt response settings.
- Fully adjustable ride control activation speed along with 3rd function auxiliary flow for powering a broom.
- Operator Profiles and Coded Start
- The M Series Wheel Loaders remember your personal settings with unique operator codes to make this machine truly yours and keep it secure on the job site.
Efficiently Powerful
- Intelligent Power Management
The Caterpillar exclusive Intelligent Power Management system monitors operator input and power availability to keep the machine working at peak efficiency.
- Power on Demand
A choice of Power Modes allows you to choose between maximum fuel efficiency or boosted power along with increased hydraulic speed to get your job done faster.
- Standard Power Mode
- Saves up to 10% fuel while running at an efficient 1,600 rpm.
- Recommended for load and carry to maximize fuel efficiency.
- Power-by-range logic increases power in speed Range 4 automatically to maximize travel speed and grade climbing performance.
- Reduces cab sound levels down to a whisper quiet 64 dB(A) typical.
- Performance Power Mode
- Enabled at the push of a button (HP+)
- Boosts engine power by up to 10% in all speed ranges.
- Boosts 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 that is designed to exceed the engine overhaul life.
- Extended fluid fill intervals with minimal use of Diesel Exhaust Fluid (DEF) 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 arrester performance as standard – Meets the 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
- Optimized Z-bar Linkage
The Caterpillar patented and 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.
- Quick Loading, Performance Series Buckets
Performance Series Sand and Gravel 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. Wear plates on the sides and bottom maximize bucket life in abrasive aggregate rehandling applications.
- 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 Caterpillar's exclusive dedicated hydraulic systems featuring three pumps. – 1st pump for Intelligent Hydrostatic drive – 2nd pump for implements – 3rd pump for 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 maximizing cutting edge life.
- Fine tune hydro-mechanical performance with fully adjustable 3rd function flow through the secondary display (when equipped) for a perfect marriage between machine and attachments.
Enjoy All Day Comfort
- 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 full color secondary display.
- An extra eye on the job site with rear view camera and optional integrated rear object detection.
- A heated and cooled seat option for added comfort in a wide range of climates.
- An easy day at work with:
- A spacious, safe, quiet operator environment featuring ergonomic controls, seat belt notification and optional Bluetooth radio with integrated microphone plus an auxiliary port.
- Easy access to vital machine parameters with the optional secondary display, working 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 programmable kickout 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 refueling the machine in dark conditions.
Configured for Success
- The Way You Want It
A complete range of optional equipment and work tools give you the versatility to configure an Aggregate Handler to be successful in your business. Get with your Cat dealer to configure yours.
- Guards:
- Lights
- Drive shaft
- Side power train
- Lower power train
- Crank case
- Debris Packages:
- Elevated breathers: axles and gear box
- Reversing fan
- Sealed alternator
- Turbine precleaner
- Operator Environment:
- Seat, deluxe or premium
- Quick steer
- Deluxe cab (with display)
- Work Tools
- Full range of tools
- Other Options:
- Autolube
- Coupler: Fusion™ and ISO
- Auxiliary hydraulics: 3rd and 4th
- Windshield washing platform
- Ride Control
- Fenders: extended and full coverage
- Aggregate weight set
- Cold start package
- Rear object detection
- Blue Angel certification
- Beacon
- LED auxiliary lights
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 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
- 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.
