Wheel Loaders

938K - 2016

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Overview

The Cat 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 ACERT engine works in concert with an intelligent hystat power train to deliver fuel efficiency as standard.

Engine

Units:
Maximum Gross Power 188.0 HP 140.0 kW Less
Engine Model Cat® C7.1 ACERT™ Cat® C7.1 ACERT™ Less
Maximum Gross Power - 1,600 rpm - ISO 14396 (DIN) (Standard Power Mode: Range 1-3*) 175.0 HP 129.0 kW Less
Maximum Gross Power - 1,600 rpm - ISO 14396 (Standard Power Mode: Range 1-3*) 173.0 HP 129.0 kW Less
Rated Net Power 182.0 HP 136.0 kW Less
Rated Net Power - 1,600 rpm - ISO 9249 (DIN) (Standard Power Mode: Speed Range 1-3*) 173.0 HP 127.0 kW Less
Rated Net Power - 1,600 rpm - SAE J1349 (Standard Power Mode: Speed Range 1-3*) 169.0 HP 126.0 kW Less
Displacement (Performance Power Mode: Speed Range 1-4) 427.0 in³ 7.01 l Less
Displacement (Standard Power Mode: Speed Range 1-3*) 427.0 in³ 7.01 l Less
Emissions Engine meets Tier 3/Stage IIIA equivalent emission standards. Engine meets Tier 3/Stage IIIA equivalent emission standards. Less
Maximum Gross Power - 1,800 rpm - ISO 14396 (DIN) (Performance Power Mode: Range 1-4) 190.0 HP 140.0 kW Less
Maximum Gross Power - 1,800 rpm - ISO 14396 (Performance Power Mode: Range 1-4) 188.0 HP 140.0 kW Less
Maximum Gross Torque - ISO 14396 (Performance Power Mode: Range 1-4) 672.0 lb/ft 912.0 N·m Less
Maximum Gross Torque - ISO 14396 (Standard Power Mode: Range 1-3*) 660.0 lb/ft 896.0 N·m Less
Maximum Net Torque - ISO 9249 (1977)/EEC 80/1269 (Performance Power Mode: Range 1-4) 653.0 lb/ft 886.0 N·m Less
Maximum Net Torque - ISO 9249 (1977)/EEC 80/1269 (Standard Power Mode: Range 1-3*) 641.0 lb/ft 870.0 N·m Less
Maximum Net Torque - SAE J1349 (Performance Power Mode: Range 1-4) 646.0 lb/ft 876.0 N·m Less
Maximum Net Torque - SAE J1349 (Standard Power Mode: Range 1-3*) 634.0 lb/ft 860.0 N·m Less
Note *Range 4 power is boosted to be the same as Performance Mode. *Range 4 power is boosted to be the same as Performance Mode. Less
Rated Net Power - 1,800 rpm - ISO 9249 (DIN) (Performance Power Mode: Speed Range 1-4) 188.0 HP 138.0 kW Less
Rated Net Power - 1,800 rpm - SAE J1349 (Performance Power Mode: Speed Range 1-4) 182.0 HP 136.0 kW Less

Buckets

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

Weights

Operating Weight 34129.0 lb 15485.0 kg Less

Cab

ROPS SAE J1040 MAY94, ISO 3471-1994 SAE J1040 MAY94, ISO 3471-1994 Less
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 Less
Note (1) Cab and Rollover Protective Structures (ROPS) are standard. Cab and Rollover Protective Structures (ROPS) are standard. Less
Note (2) A semi-cab option is available. A semi-cab option is available. Less

Axles

Front Fixed; Open differential (standard); Locking differential (optional) Fixed; Open differential (standard); Locking differential (optional) Less
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) Less

Loader Hydraulic System

Hydraulic Cycle Time - Performance Mode at 1,800 rpm - Dump, at Maximum Lift Height 1.5 s 1.5 s Less
Hydraulic Cycle Time - Performance Mode at 1,800 rpm - Float Down, Maximum Lift to Ground Level 2.7 s 2.7 s Less
Hydraulic Cycle Time - Performance Mode at 1,800 rpm - Raise, Ground Level to Maximum Lift 5.5 s 5.5 s Less
Hydraulic Cycle Time - Performance Mode at 1,800 rpm - Total Cycle Time 9.7 s 9.7 s Less
Hydraulic Cycle Time - Standard Mode at 1,600 rpm - Dump, at Maximum Lift Height 1.7 s 1.7 s Less
Hydraulic Cycle Time - Standard Mode at 1,600 rpm - Float Down, Maximum Lift to Ground Level 2.7 s 2.7 s Less
Hydraulic Cycle Time - Standard Mode at 1,600 rpm - Raise, Ground Level to Maximum Lift 6.2 s 6.2 s Less
Hydraulic Cycle Time - Standard Mode at 1,600 rpm - Total Cycle Time 10.6 s 10.6 s Less
Maximum Flow - Implement Pump 50.0 gal/min 190.0 l/min Less
Maximum Flow - Implement Pump - 3rd Function* 50.0 gal/min 190.0 l/min Less
Maximum Flow - Implement Pump - 4th Function Maximum Flow* 40.0 gal/min 150.0 l/min Less
Maximum Working Pressure - Implement Pump 4061.0 psi 28000.0 kPa Less
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. Less
Relief Pressure - Tilt Cylinder 4351.0 psi 30000.0 kPa Less
Relief Pressure - Tilt Cylinder - 3rd Function Maximum Working Pressure 4061.0 psi 28000.0 kPa Less
Relief Pressure - Tilt Cylinder - 4th Function Maximum Working Pressure 4061.0 psi 28000.0 kPa Less

Service Refill Capacities

Axles - Front 9.2 gal (US) 35.0 l Less
Axles - Rear 9.2 gal (US) 35.0 l Less
Cooling System 8.5 gal (US) 32.0 l Less
Engine Crankcase 5.2 gal (US) 19.5 l Less
Fuel Tank 51.5 gal (US) 195.0 l Less
Hydraulic System - Including Tank 44.9 gal (US) 170.0 l Less
Hydraulic Tank 23.8 gal (US) 90.0 l Less
Transmission - Gear Box 2.9 gal (US) 11.0 l Less

Sound

Note (1) Declared dynamic operator sound pressure level is 72 dB(A) when “ISO 6396:2008” is used to measure value for an enclosed cab. Declared dynamic operator sound pressure level is 72 dB(A) when “ISO 6396:2008” is used to measure value for an enclosed cab. Less
Note (2) The measurement was conducted at 70% of the maximum engine cooling fan speed, with the cab doors and cab windows closed. The measurement was conducted at 70% of the maximum engine cooling fan speed, with the cab doors and cab windows closed. Less
Note (3) The declared exterior sound power level is 104 dB(A) when the value is measured according to “ISO 6395:2008.” The declared exterior sound power level is 104 dB(A) when the value is measured according to “ISO 6395:2008.” Less

Steering

Maximum Flow - Steering Pump 34.0 gal/min 130.0 l/min Less
Maximum Steering Torque - 0° (Straight Machine) 42506.0 lb/ft 57630.0 N·m Less
Maximum Steering Torque - 40° (Full Turn) 31398.0 lb/ft 42570.0 N·m Less
Maximum Working Pressure - Steering Pump 3500.0 psi 24130.0 kPa Less
Number of Steering Wheel Turns - Full Left to Full Right or Full Right to Full Left 3.1 turns 3.1 turns Less
Steering Articulation Angle - Each Direction 40° 40° Less
Steering Cycle Times - Full Left to Full Right - At 1,800 rpm: 90 rpm Steering Wheel Speed 2.2 s 2.2 s Less

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. Less
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. Less
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. Less
Other Choices Vary by Region (1) 20.5 R25, radial (L-2); 20.5-25 16PR (L-5); 23.5 R25, radial (L-3); 20.5 R25, radial (L-5); 650/65 R25 radial (L-3) 20.5 R25, radial (L-2); 20.5-25 16PR (L-5); 23.5 R25, radial (L-3); 20.5 R25, radial (L-5); 650/65 R25 radial (L-3) Less
Other Choices Vary by Region (2) 20.5-25 12PR (L-2); Skidder/Agriculture; 20.5-25 12PR (L-3); Flexport™ Gen II 20.5-25 12PR (L-2); Skidder/Agriculture; 20.5-25 12PR (L-3); Flexport™ Gen II Less
Standard Size 20.5 R25, radial (L-3) 20.5 R25, radial (L-3) Less

Transmission

Forward and Reverse - Range 1* 1-13 km/h (0.6-8 mph) 1-13 km/h (0.6-8 mph) Less
Forward and Reverse - Range 2 8.0 mile/h 13.0 km/h Less
Forward and Reverse - Range 3 17.0 mile/h 27.0 km/h Less
Forward and Reverse - Range 4 25.0 mile/h 40.0 km/h Less
Note *Creeper control allows max. speed range adjustability from 1 km/h (0.6 mph) to 13 km/h (8 mph) in Range 1 through the sec. display. *Creeper control allows max. speed range adjustability from 1 km/h (0.6 mph) to 13 km/h (8 mph) in Range 1 through the sec. display. Less
Notes Factory default is 7 km/h (4.4 mph). Factory default is 7 km/h (4.4 mph). Less

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.

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.

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 equivalent emission standards with a Cat® C7.1 ACERT™ engine that is designed to manage itself so you can concentrate on your work.

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.

938K - 2016 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
  • 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 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

938K - 2016 Optional Equipment

Cab, deluxe
  • Electrically adjustable external heated mirrors (2)
  • Secondary display to enable features and adjust parameters
  • Sunscreen, front and rear

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

Attachments

Flat Floor Buckets - Performance Series
2.5 m3 (3.2 yd3), Pin On, Bolt-On Cutting Edge 2.5 m3 (3.2 yd3), Pin On, Welded on Teeth 2.9 m3 (3.8 yd3), Pin On, Welded on Teeth 2.9 m3 (3.8 yd3), Pin On, Welded on Teeth
General Purpose Buckets
1.9 m3 (2.5 yd3), Fusion 1.9 m3 (2.5 yd3), Fusion, Bolt-On Cutting Edge 2.1 m3 (2.7 yd3), Fusion 2.1 m3 (2.7 yd3), Fusion, Bolt-On Cutting Edge 2.3 m3 (3.0 yd3), Fusion 2.3 m3 (3.0 yd3), Fusion, Bolt-On Cutting Edge 2.5 m3 (3.2 yd3), Fusion 2.5 m3 (3.2 yd3), Fusion 2.5 m3 (3.2 yd3), Fusion, Bolt-On Cutting Edge 2.5 m3 (3.2 yd3), Pin On 2.5 m3 (3.2 yd3), Pin On 2.5 m3 (3.2 yd3), Pin On, Bolt-On Cutting Edge 2.7 m3 (3.5 yd3), Fusion 2.7 m3 (3.5 yd3), Fusion 2.7 m3 (3.5 yd3), Fusion, Bolt-On Cutting Edge 2.7 m3 (3.5 yd3), Pin On 2.7 m3 (3.5 yd3), Pin On 2.7 m3 (3.5 yd3), Pin On, Bolt-On Cutting Edge 2.9 m3 (3.8 yd3), Fusion 2.9 m3 (3.8 yd3), Fusion, Bolt-On Cutting Edge 2.9 m3 (3.8 yd3), Pin On 2.9 m3 (3.8 yd3), Pin On, Bolt-On Cutting Edge
Grading Buckets
1.8 m3 (2.40 yd3), ISO
High Dump Buckets
4.1 m3 (5.4 yd3), Pin On, Bolt-On Cutting Edge 4.2 m3 (5.4 yd3), Fusion™, Bolt-On Cutting Edge 5.0 m3 (6.5 yd3), Fusion™, Bolt-On Cutting Edge 5.0 m3 (6.5 yd3), Pin On, Bolt-On Cutting Edge
Light Material Buckets
3.5 m3 (4.5 yd3), Fusion™ 3.5 m3 (4.5 yd3), Fusion™, Bolt-On Cutting Edge 3.5 m3 (4.5 yd3), Pin On 3.5 m3 (4.5 yd3), Pin On, Bolt-On Cutting Edge 3.8 m3 (5.0 yd3), Fusion™ 3.8 m3 (5.0 yd3), Fusion™, Bolt-On Cutting Edge 3.8 m3 (5.0 yd3), Pin On 3.8 m3 (5.0 yd3), Pin On, Bolt-On Cutting Edge 4.2 m3 (5.5 yd3), Fusion™ 4.2 m3 (5.5 yd3), Fusion™, Bolt-On Cutting Edge 4.2 m3 (5.5 yd3), Pin On 4.2 m3 (5.5 yd3), Pin On, Bolt-On Cutting Edge 5.0 m3 (6.5 yd3), Fusion™ 5.0 m3 (6.5 yd3), Fusion™, Bolt-On Cutting Edge 5.0 m3 (6.5 yd3), Pin On 5.0 m3 (6.5 yd3), Pin On 5.0 m3 (6.5 yd3), Pin On, Bolt-On Cutting Edge 5.0 m3 (6.5 yd3), Pin On, Bolt-On Cutting Edge
Multi-Purpose Buckets
2.7 m3 (3.5 yd3) Fusion™, Bolt-On Cutting Edge 2.7 m3 (3.5 yd3) Pin On, Bolt-On Cutting Edge
Sand & Gravel Buckets
2.5 m3 (3.2 yd3), Fusion™, Bolt-On Cutting Edge 2.7 m3 (3.5 yd3), Fusion™, Bolt-On Cutting Edge 2.7 m3 (3.5 yd3), Pin On, Bolt-On Cutting Edge 2.9 m3 (3.8 yd3), Fusion™, Bolt-On Cutting Edge 2.9 m3 (3.8 yd3), Pin On, Bolt-On Cutting Edge 3.2 m3 (4.2 yd3), Fusion™, Bolt-On Cutting Edge 3.2 m3 (4.2 yd3), Pin On, Bolt-On Cutting Edge
Construction Forks
1524 mm (60 in) 1829 mm (72 in)
Log & Lumber Fork Carriages
1702 mm (68 in) 1705 mm (68 in) 1827 mm (72 in) 1869 mm (74 in) 2174 mm (86 in) 2659 mm (105 in) 2812 mm (111 in)
Millyard Forks
2185 mm (86 in), Fusion™
Pipe & Pole Forks
2559 mm (101 in) 2559 mm (101 in)
Sorting Grapple Forks
1812 mm (71 in), Fusiion™ 1812 mm (71 in), ISO
Straight Snow Pushes
3.8 m (12 ft) 3.8 m (12 ft) 4.4 m (14 ft) 4.4 m (14 ft) 5.0 m (16 ft) 5.0 m (16 ft)