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Wheel Loaders

938K

The CatÂ® 938K 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.

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Overview

Engine

UNITS:

Metric

Imperial

Maximum Gross Power	140 kW	188 hp
Maximum Gross Power - 1,800 rpm - ISO 14396 (Performance Power Mode: Range 1-4)	140 kW	188 hp
Engine Model	Cat® C7.1	Cat® C7.1
Maximum Gross Power - 1,600 rpm - ISO 14396 (Standard Power Mode: Range 1-3*)	129 kW	173 hp
Note (2)	*Range 4 power is boosted to be the same as Performance Mode.	*Range 4 power is boosted to be the same as Performance Mode.
Note (1)	Net power shown is the power available at the flywheel when the engine is equipped with alternator and air cleaner.	Net power shown is the power available at the flywheel when the engine is equipped with alternator and air cleaner.
Maximum Gross Power - 1,800 rpm - ISO 14396 (metric) (Performance Power Mode: Range 1-4)	190 hp	190 hp
Net Power - 1,800 rpm - SAE J1349 (Performance Power Mode: Range 1-4)	136 kW	182 hp
Net Power - 1,600 rpm - ISO 9249 (metric) (Standard Power Mode: Range 1-3*)	173 hp	173 hp
Net Power - 1,800 rpm - ISO 9249 (metric) (Performance Power Mode: Range 1-4)	188 hp	188 hp
Net Power - 1,600 rpm - SAE J1349 (Standard Power Mode: Range 1-3*)	126 kW	169 hp
Maximum Gross Power - 1,600 rpm - ISO 14396 (metric) (Standard Power Mode: Range 1-3*)	175 hp	175 hp
Maximum Gross Torque - ISO 14396 (Standard Power Mode: Range 1-3*)	896 N·m	660 lb/ft
Displacement (Standard Power Mode: Speed Range 1-3*)	7.01 l	427 in³
Maximum Net Torque - ISO 9249 (1977)/EEC 80/1269 (Standard Power Mode: Range 1-3*)	870 N·m	641 lb/ft
Emissions	Engine meets U.S. EPA Tier 3/EU Stage IIIA/Brazil MAR-1 equivalent emission standards.	Engine meets U.S. EPA Tier 3/EU Stage IIIA/Brazil MAR-1 equivalent emission standards.
Maximum Gross Torque - ISO 14396 (Performance Power Mode: Range 1-4)	912 N·m	672 lb/ft
Maximum Net Torque - SAE J1349 (Standard Power Mode: Range 1-3*)	860 N·m	634 lb/ft
Maximum Net Torque - ISO 9249 (1977)/EEC 80/1269 (Performance Power Mode: Range 1-4)	886 N·m	653 lb/ft
Maximum Net Torque - SAE J1349 (Performance Power Mode: Range 1-4)	876 N·m	646 lb/ft
Displacement (Performance Power Mode: Speed Range 1-4)	7.01 l	427 in³

Buckets

Bucket Capacities	2.5-5.0 m³ (3.2-6.5 yd³)	2.5-5.0 m³ (3.2-6.5 yd³)
Bucket Capacities - General Purpose	2.5-3.2 m³ (3.2-4.2 yd³)	2.5-3.2 m³ (3.2-4.2 yd³)
Bucket Capacities - Light Material	3.1-5.0 m³ (4.0-6.5 yd³)	3.1-5.0 m³ (4.0-6.5 yd³)

Weights

Operating Weight	15282 kg	33689 lb

Cab

ROPS	SAE J1040 MAY94, ISO 3471-1994	SAE J1040 MAY94, ISO 3471-1994
FOPS	SAE J/ISO 3449 APR98, Level II, ISO 3449 1992 Level II	SAE J/ISO 3449 APR98, Level II, ISO 3449 1992 Level II
Note (1)	Cab and Rollover Protective Structures (ROPS) are standard.	Cab and Rollover Protective Structures (ROPS) are standard.
Note (2)	A semi-cab option is available.	A semi-cab option is available.

Service Refill Capacities

Axles - Front	35 l	9.2 gal (US)
Engine Crankcase	19.5 l	5.2 gal (US)
Fuel Tank	195 l	51.5 gal (US)
Hydraulic Tank	90 l	23.8 gal (US)
Hydraulic System - Including Tank	170 l	44.9 gal (US)
Transmission - Gear Box	11 l	2.9 gal (US)
Axles - Rear	35 l	9.2 gal (US)
Cooling System	32 l	8.5 gal (US)

Steering

Number of Steering Wheel Turns - Full Left to Full Right or Full Right to Full Left	3.1 turns	3.1 turns
Steering Cycle Times - Full Left to Full Right - At 1,800 rpm: 90 rpm Steering Wheel Speed	2.2 s	2.2 s
Maximum Working Pressure - Steering Pump	24130 kPa	3500 psi
Maximum Flow - Steering Pump	130 l/min	34 gal/min
Maximum Steering Torque - 40° (Full Turn)	42570 N·m	31398 lb/ft
Maximum Steering Torque - 0° (Straight Machine)	57630 N·m	42506 lb/ft
Steering Articulation Angle - Each Direction	40°	40°

Axles

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

Loader Hydraulic System

Hydraulic Cycle Time - Performance Mode at 1,800 rpm - Float Down, Maximum Lift to Ground Level	2.7 s	2.7 s
Maximum Working Pressure - Implement Pump	28000 kPa	4061 psi
Hydraulic Cycle Time - Standard Mode at 1,600 rpm - Total Cycle Time	10.6 s	10.6 s
Maximum Flow - Implement Pump	190 l/min	50 gal/min
Relief Pressure - Tilt Cylinder - 4th Function Maximum Working Pressure	28000 kPa	4061 psi
Hydraulic Cycle Time - Standard Mode at 1,600 rpm - Dump, at Maximum Lift Height	1.7 s	1.7 s
Maximum Flow - Implement Pump - 4th Function Maximum Flow*	150 l/min	40 gal/min
Hydraulic Cycle Time - Performance Mode at 1,800 rpm - Dump, at Maximum Lift Height	1.5 s	1.5 s
Hydraulic Cycle Time - Performance Mode at 1,800 rpm - Total Cycle Time	9.7 s	9.7 s
Relief Pressure - Tilt Cylinder - 3rd Function Maximum Working Pressure	28000 kPa	4061 psi
Hydraulic Cycle Time - Standard Mode at 1,600 rpm - Raise, Ground Level to Maximum Lift	6.2 s	6.2 s
Relief Pressure - Tilt Cylinder	30000 kPa	4351 psi
Hydraulic Cycle Time - Standard Mode at 1,600 rpm - Float Down, Maximum Lift to Ground Level	2.7 s	2.7 s
Note	*Adjustable from 20% to 100% of maximum flow through the secondary display, when equipped.	*Adjustable from 20% to 100% of maximum flow through the secondary display, when equipped.
Hydraulic Cycle Time - Performance Mode at 1,800 rpm - Raise, Ground Level to Maximum Lift	5.5 s	5.5 s
Maximum Flow - Implement Pump - 3rd Function Maximum Flow*	190 l/min	50 gal/min

Transmission

Forward and Reverse - Range 2	13 km/h	8 mile/h
Forward and Reverse - Range 4	40 km/h	25 mile/h
Forward and Reverse - Range 3	27 km/h	17 mile/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).	*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 1*	1-13 km/h (0.6-8 mph)	1-13 km/h (0.6-8 mph)

Tires

Note (1)	Other tire choices are available. Contact your Cat dealer for details.	Other tire choices are available. Contact your Cat dealer for details.
Other Choices Vary by Region (1)	20.5-25 16 PR (L-3)	20.5-25 16 PR (L-3)
Note (3)	Caterpillar recommends that you consult a tire supplier to evaluate all conditions before selecting a tire model.	Caterpillar recommends that you consult a tire supplier to evaluate all conditions before selecting a tire model.
Note (2)	In certain applications, the loader's productive capabilities may exceed the tire's tonnes-km/h (ton-mph) capabilities.	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)	20.5 R25, radial (L-3)

Sound

Note (3)	The declared exterior sound power level is 104 dB(A) when the value is measured according to the dynamic test procedures and the conditions that are specified in “ISO 6395:2008.”	The declared exterior sound power level is 104 dB(A) when the value is measured according to the dynamic test procedures and the conditions that are specified in “ISO 6395:2008.”
Note (1)	The declared dynamic operator sound pressure level is 72 dB(A) when “ISO 6396:2008” is used to measure the value for an enclosed cab.	The declared dynamic operator sound pressure level is 72 dB(A) when “ISO 6396:2008” is used to measure the value for an enclosed cab.
Note (2)	The measurement was conducted at 70% of the maximum engine cooling fan speed, with the cab doors and cab windows closed. The cab was properly installed and maintained. The sound level may vary at different engine cooling fan speeds.	The measurement was conducted at 70% of the maximum engine cooling fan speed, with the cab doors and cab windows closed. The cab was properly installed and maintained. The sound level may vary at different engine cooling fan speeds.

Features

Efficiently Powerful

Experience hybrid like fuel efficiency with an intelligent hydrostatic power train and industry leading fuel savings through a lower maximum engine speed of just 1,600 rpm in Standard Mode. Power when you need it with Caterpillar’s exclusive Power‑by-Range technology that increases power in Range 4 for improved speed on grade. For your toughest and most demanding applications a new Performance Mode will allow you to boost the power and hydraulic speed in all Ranges to get the job done even quicker. Meets U.S. EPA Tier 3/EU Stage IIIA/Brazil MAR-1 equivalent emission standards with a Cat^® C7.1 engine that is designed to manage itself so you can concentrate on your work.

Work Made Easy

Move more with Caterpillar's patented quick loading Performance Series buckets and optimized Z-bar linkage that combines the digging efficiency of a traditional Z-bar with tool carrier capabilities. The parallel lift and high tilt forces throughout the working range allow you to safely and confidently handle loads with precise control. Multi-function work has never been easier with dedicated pumps for each system and a flow sharing implement valve governed by an intelligent power management system. Simultaneously lift, steer and drive without compromise. The K Series Small Wheel Loader simply does what you ask it to do.

Enjoy All Day Comfort

Have a seat in the updated K Series Small Wheel Loader and enjoy excellent all around visibility and low-effort joystick controls that move with you on a fully adjustable seat suspension. A large spacious operator environment combined with Caterpillar's exclusive hydraulic cylinder damping and smooth predictable controls make this the most comfortable seat on your job site.

Customize Your Experience

Meet your application requirements and individual preferences with Caterpillar's industry first Hystat™ Operator Modes featuring four unique power train settings. Select classic Torque Converter for smooth rollout, conventional Hystat for aggressive engine braking, an Ice Mode that maximizes your control on slippery underfoot, or default mode which blends the best of Hystat and Torque Converter characteristics. Fine tune machine performance with adjustments at your fingertips through the soft touch buttons and optional secondary display. Quickly set hydraulic response along with linkage kick-out positions, maximum wheel torque, and peak ground speed to efficiently perform a multitude of tasks.

Standard Equipment

POWER TRAIN

Auto idle shut down feature
Cat C7.1 engine Power modes (Standard and Performance) Power by range (High Power in Range 4) Turbocharged and aftercooled Filtered crankcase breather
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
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 mirrors with lower parabolic
Hydraulic control lockout
Interior cab lighting, door and dome
Interior rear view mirrors (2)
Lunch box storage
Radio ready speakers
Seat-mounted electronic implement controls, adjustable
Column mounted multi function control – lights, wipers, turn signal
Tilt and telescopic steering wheel
Tinted front glass

OTHER STANDARD EQUIPMENT

Large-access enclosure doors with adjustable close/open force
Parallel lift loader linkage

Optional Equipment

OPTIONAL EQUIPMENT

Auto lube, integrated in secondary display
Auxiliary flow, third and fourth function, adjustable through secondary display
Beacon light, strobe
Cab, deluxe Camera, roof mounted, front view with separate display* Rear window defroster (standard in Europe) Secondary display to adjust settings (standard in Europe) Sunscreen, front and rear Wet arm wiper/washer, front and rear *Forward facing camera system may be required for local EU requirements. Consult your local Cat dealer for additional information.
Camera, rear view (standard in Europe)
Cold start package
Corrosion protection package
Counterweight, (heavy and logger)
Coupler, (Fusion™ and ISO 23727)
Debris packages (low, medium, high)
Differential lock, front axle
Fenders (extended cover and full coverage)
Guarding (machine and operator)
Linkage, high lift
Lights, auxiliary, halogen or LED with engine compartment lights
Lights, LED front roading
Load check valves
Object Detection
Product Link™ PRO and ELITE with capabilities for software push, data logging, histogram and trend mapping
Radio packages
Rear wiper
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
CE Certification (standard in Europe)
NOTE: Not all features are available in all regions.

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