938K Wheel Loader

Engine

Net Power	126.0 kW
Model	Cat® C7.1 ACERT™
SAE J1349	136.0 kW
ISO 9249 (1997)	137.0 kW
EEC 80/1269	137.0 kW
Bore	105.0 mm
Stroke	135.0 mm
Displacement	7.0 L
Net Torque	874.0 N·m

Weights

Operating Weight

15146.0 kg

Buckets

Bucket Capacities

2.5 m3 - 5.0 m3 3.3 yd3 - 6.5 yd3

Dimensions

Wheelbase	3050.0 mm
Height to Top of ROPS/FOPS	3340.0 mm
Height to Center of Axle	685.0 mm
Ground Clearance	386.0 mm
Overall Length	7604.0 mm
Length - Rear Axle to Bumper	1968.0 mm
Center Line of Front Axle-Hitch	1525.0 mm
Wheel Base Length	3050.0 mm
Dump Clearance-Max Lift-45°	2869.0 mm
Bucket Pin Height at Max Lift	3969.0 mm
Overall Height - Bucket Raised	5242.0 mm
Reach at Max Lift and 45° Dump	1108.0 mm
Rack Back Angle at Max Lift	54.0 Degrees
Dump Angle at Max Lift	49.0 Degrees
Rack Back Angle at Carry	45.0 Degrees
Carry Height	467.0 mm
Digging Depth	100.0 mm

Operating Specifications

Static Tipping Load (Full Turn)	9698.0 kg
Reach - full lift/45 degree dump angle	1108.0 mm
Dump clearance - Full lift/45 degree dump angle	2869.0 mm
Articulation Angle	40.0 Degrees

Loader Hydraulic System

Hydraulic Cycle Time	9.7 Seconds
Pump flow - Implement pump	190.0 L/min
Maximum working pressure	28000.0 kPa
Hydraulic cycle time:	9.7 sec
Raise	5.5 Seconds
Dump	1.5 Seconds
Lower, empty, float down	2.7 Seconds
Total	9.7 Seconds
Bore	120.0 mm
Stroke	789.0 mm
Bore	150.0 mm
Stroke	555.0 mm

Steering

Steering Articulation	40.0 Degrees
Steering angle, each direction	40.0 Degrees
Steering cylinders, two, bore	80.0 mm
Maximum working pressure	24130.0 kPa

Transmission

Standard transmission max travel speeds:	40.0 km/h
Forward 1	13.0 km/h
2	13.0 km/h
3	27.0 km/h
4	40.0 km/h
Reverse 1	13.0 km/h
2	13.0 km/h
3	27.0 km/h
4	40.0 km/h

Service Refill Capacities

Fuel tank	195.0 L
Cooling system	32.0 L
Crankcase	19.5 L
Transmission	11.0 L
Front	35.0 L
Rear	35.0 L
Hydraulic system (including tank)	170.0 L
Hydraulic tank	90.0 L

Cab

ROPS	SAE J1040 MAY94, ISO 3471-1994
FOPS	SAE J/ISO 3449 APR98 Level II, ISO 3449 1992 Level II

Parallel Lift Loader Linkage

Optimized Z-bar linkage delivers enhanced visibility with maximum productivity.

Optimized Z-bar Linkage

The new optimized patent-pending Z-bar linkage combines the digging efficiency of a traditional Z-bar with tool carrier capabilities for great performance and versatility.

• Parallel lift and high tilt forces throughout the working range help you safely and confidently handle loads with precise control.
• Linkage features excellent visibility to the bucket cutting edge and fork tips.

Industry Leading Operator Station

Superior visibility, ergonomics and comfort.

Best Seat on the Job Site

Enjoy all day comfort in the spacious new K Series cab:

• Extremely low sound levels.
• Superior visibility to the work tool due to wide curved windshield, redesigned Z-bar linkage, lines routing and work tool design.
• Automatic temperature control.
• Seat-mounted, ergonomic joystick for lift and tilt functions. Joystick includes integrated Forward/Neutral/Reverse switch and optional differential lock trigger, third and fourth function auxiliary hydraulics.
• Easy access to the cab with ergonomically placed grab rails, walk-up steps and large platform.

Easy to Use Instrument Panel and Display

An optional secondary display provides easy access to vital machine parameters and works in conjunction with the standard soft touch panel to allow real time adjustments.

• Machine information and diagnostics at a glance.
• Real time and historic fuel usage.
• Backup camera display.
• Help button plus 22 language capability.
• Adjustment of functions such as creep, third function flow, throttle and rimpull.

Power Train

Maximum machine power, reduced fuel consumption.

Intelligent Power Management

The Caterpillar exclusive Intelligent Power Management system actively monitors operator input and power availability to keep the machine working at peak efficiency.

Engine

The Cat® C7.1 ACERT™ engine provides cleaner, quieter operation while delivering superior performance and durability. The engine meets U.S. EPA Tier 3 and EU Stage IIIA emission requirements. Maximum engine speed is now 1,800 rpm for reduced fuel consumption and lower sound levels. The engine also features:

• Class-leading fuel efficiency, significantly reducing owning and operating costs.
• Configurable auto idle shut down feature as standard equipment.

Transmission

A smooth, step-less electronically controlled hydrostatic transmission provides adjustable power to the ground and superb groundspeed control for a multitude of tasks.

• Four speed ranges ensure maximum controllability for any task.
• Rimpull control enables you to match available tractive power to underfoot conditions, helping reduce tire wear.
• Creeper control lets you adjust machine groundspeed when using work tools such as brooms, snow blowers and brushcutters.
• Throttle lock feature allows you to maintain constant engine RPM regardless of machine speed.

Axles and Brakes

Available fully locking front differential axles and open rear differentials can be engaged at full torque on the go with a button on the joystick. Brake system includes independent service brakes on front and rear axles and a spring applied, electronically activated park brake.

Hydraulics

Smooth, efficient operation helps you get the job done faster.

Load-Sensing Hydraulic System

K Series machines feature a new electro-hydraulic control system that is governed by the Intelligent Power Management system. The load-sensing, variable flow system senses work demand and adjusts flow and pressure to match. This allows full hydraulic forces at any engine speed.

• 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.
• Caterpillar exclusive electro-hydraulic snubbing at programmed kickouts and rack/dump stops greatly improves operator comfort and component life in addition to improved material retention.
• Adjustable third function flow through the secondary display (when equipped) for use with hydro-mechanical work tools.
• Optional Ride Control System provides an even smoother ride and excellent material retention.
• Designed with dedicated pumps for steering and implements so there is no compromise in cycle times and efficiency for multi-function operation.

Work Tools

Do more jobs with one machine.

The Right Tool for the Job

An extensive range of work tools and bucket styles are available to make your Cat Wheel Loader one of the most versatile machines on the job site.

Performance Series Buckets

Performance Series Buckets utilize a system-based approach to balance bucket shape with the machine’s linkage, weight, lift and tilt capacities. They deliver higher fill factors and better material retention for significant productivity and fuel efficiency improvements. The buckets feature a longer floor, open throat and curved side bars.

Additional Buckets

• Light Material
• Multi Purpose
• Sand and Gravel
• High Dump
• Wood Chip

Material Handling Work Tools

• Pallet Forks
• Construction Forks
• Material Handling Arm

Work Tools for Special Applications

• Dozer Blades
• Snow Plows
• Brooms
• Rakes
• Log and Lumber Forks
• Pipe and Pole Forks
• Side Dump Buckets
• Grapple Buckets
• Grading Buckets

Couplers

The Cat Fusion™ interface provides coupler flexibility without compromise in breakout force and dump clearance. The advanced wedging mechanism creates a tight, rattle-free fit, eliminating play and wear for long service life. The open coupler frame design provides excellent line of sight to the work tool. An ISO 23727 coupler interface is also available for use with competitive work tools.

Options

Customize your machine to meet your needs.

Configure the Machine the Way You Want It

A variety of options are available on the Cat K Series Wheel Loaders to suit your specific application needs. See your Cat dealer for more information about the features below and additional options.

• Coupler Options
• Counterweight Options
• HID Lights
• Turbine Precleaner
• Rear Camera in Grill
• Guards
• 3rd and 4th Function Hydraulics

Additional options include:

• Power Train Side Guards
• Driveshaft Guard
• Rear Waste Gate
• RESPA Cab Filtration
• Lower Power Train Guard
• Crankcase Guard
• Optional Toolbox

Serviceability

Easy service to keep your machine working.

Easy Service Access

All service points are accessible from ground level. Three large service doors can be opened and closed in any order to give full access to filters and service points. Extended service intervals reduce service time and maximize uptime. Additional service features include:

• Caterpillar exclusive electric fuel priming pump.
• Jump start studs as standard equipment.
• Single plane cooling system with 6 fins per inch coolers as standard.
• Swing-up air conditioner condenser for easy clean out.
• Product Link ready (standard).

Customer Support

Unmatched support makes the difference.

Renowned Cat Dealer Support

Your Cat dealer is ready to help you every step of the way. From new or used machine sales, to rental or rebuild options, your Cat dealer can provide an optimal solution to your business needs. Unsurpassed worldwide parts availability, trained technicians and customer support agreements maximize your machine uptime.

POWER TRAIN

 Axle seal guards

 Auto idle shut down feature

 Brake/decelerator pedal

 Cat C6.6 ACERT™ engine

 Coolant protection to -34° C (-29° F)

 Differential lock in front axle

 Differential rear open

 Dry type air cleaner

 Enclosed wet disc full hydraulic brakes

 Fuel priming pump, automatic

 Fuel water separator

 Hydraulically driven demand cooling fan

 Hydrostatic transmission with electronic speed range control

 Lubed for life driveshafts

 Parking brake, electric

 Single plane cooling system with remote coolant reservoir

 SOS port, engine, coolant and transmission oil

 Thermal starting aid (glow plugs)

 Throttle lock

 Transmission directional control on implement joystick

 Transmission sight gauge

 Transmission oil cooler

HYDRAULICS

 Heavy duty hydraulic cooler

 Hydraulic diagnostic connectors and SOS

 Hydraulic sight gauge, visible

 Load sensing hydraulics and steering

 Seat-mounted hydraulic controls with F/N/R

Heavy duty hydraulic cooler

Hydraulic diagnostic connectors and SOS

Hydraulic sight gauge, visible

Load sensing hydraulics and steering

Seat-mounted hydraulic controls with F/N/R

ELECTRICAL

 Alternator, 115-amp, heavy duty

 12V power supply in cab (2)

 Batteries, 1,000 CCA (2)

 24 volt system

 Back-up alarm

 Battery disconnect switch

 Beacon ready

 Diagnostic connector

 Directional signals front and rear

 Emergency shutdown switch

 Halogen work lights front and rear

 Heavy duty gear reduction starter

 LED rear stop tail turn lights

 Remote jump start post

 Resettable main and critical function breakers

 Roading lights front and rear

Alternator, 115-amp, heavy duty

12V power supply in cab (2)

Batteries, 1,000 CCA (2)

24 volt system

Back-up alarm

Battery disconnect switch

Beacon ready

Diagnostic connector

Directional signals front and rear

Emergency shutdown switch

Halogen work lights front and rear

Heavy duty gear reduction starter

LED rear stop tail turn lights

Remote jump start post

Resettable main and critical function breakers

Roading lights front and rear

OPERATOR ENVIRONMENT

 75 mm (3 in) retractable seatbelt

 Automatic temperature control

 Cab, enclosed ROPS/FOPS pressurized and sound suppressed

 Cup holder

 External heated mirrors

 Ground level cab door release

 Gauges: Digital direction indicator Digital hour meter and odometer Digital speedometer Engine coolant temperature gauge Fuel level indicator Hydraulic oil temperature gauge Tachometer

 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

 Removable floormat

 Seat-mounted electronic implement controls, adjustable

 Sliding glass on the side windows

 Steering column mounted multi function control - lights, wipers, turn signal

 Suspension seat, fabric

 Tilt and telescopic steering wheel

 Tinted front glass

 Wet arm wiper/washer, 2-speed and intermittent, front

 Wet arm wiper/washer, rear

OTHER STANDARD EQUIPMENT

 Automatic bucket/fork positioner, adjustable in-cab

 Automatic lift and bucket kickouts, adjustable in-cab

 Fenders

 Large-access enclosure doors with adjustable close/open force

 Parallel lift loader linkage with sealed pins

 Recovery hitch with pin

 Remote mounted lubrication points

 Toolbox, lockable

 Vandalism protection - lockable compartments

EU STANDARD EQUIPMENT

 Deluxe cab

 Secondary display

 Rearview camera

Antifreeze/coolant, extended-life, protects to -50° C (-58° F)

Beacon light, rotating or strobe

Cab, deluxe includes:

 Automatic blower control

 Electrically adjustable external heated mirrors (2)

 LED interior lighting

 Secondary display

 Visor

Camera, rearview

Cold start package:

 Ether starting aid

 Block heater

 Additional batteries (2)

Counterweight, heavy

Counterweight, logger

Coupler, Fusion

Coupler, ISO 23727

Coupler, jumper lines, third function

Debris package

Debris package - cleaning arrangement

Fenders, roading

Guards

 Power train, lower

 Power train, side

 Crankcase

 Driveshaft

 Windshield

Hydraulic control auxiliary, third and fourth function

Jumper lines, third function

Lights, auxiliary, halogen or HID

Machine Security System

Product Link

Radio packages:

 Radio ready with Bluetooth interface, microphone and auxiliary inputs for MP3 players

 Radio, AM/FM with CD player

 Radio, AM/FM with CD player deluxe, Bluetooth interface, microphone and auxiliary inputs for MP3 players

Ride Control System

Seats:

 Deluxe seat - fully adjustable fabric air suspension seat with high seat backrest

Steering:

 Dual mode

 Secondary

Dual mode

Secondary

Toolbox, additional

Work tools