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990K Millyard Arrangement Wheel Loader
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Cat Large Wheel Loaders are designed with durability built in, ensuring maximum availability through multiple life cycles. With optimized performance and simplified serviceability, our machines allow you to move more material efficiently and safely. The 990K Millyard Arrangement is designed to meet the demands of millyard applications. The features of the 990K Millyard work together to provide a durable and reliable machine to meet the needs of the modern millyard.

Specifications
Features
Standard Equipment

Engine

Net Power
699 hp
Engine Model
Cat® C27 ACERT™
Net Power - SAE J1349
699 hp
Bore
5.4 in
Stroke
6.0 in
Displacement
1649.5 in3
Torque Rise
18.0 %
Rated Speed
1,800 rpm
Emissions
U.S. EPA Tier 4 Final or Tier 2 equivalent
Gross (ISO 14396)
752 hp
Peak Torque @ 1,200 rpm
2624 lb ft
Rated Speed - Gross (ISO 14396)
752 hp
Rated Speed - Gross (SAE J1995)
766 hp
Rated Speed - Net Power - SAE J1349 (High Ambient)
648 hp
Rated Speed - Net Power - SAE J1349 (Standard Ambient)
699 hp

Service Refill Capacities

Fuel Tank
294.3 gal
Cooling System
54.9 gal
Transmission
29.1 gal
Differentials and Final Drives - Front
71.6 gal
Differentials and Final Drives - Rear
68.9 gal
Engine Crankcase
20.0 gal
Hydraulic System Factory Fill
210.0 gal
Hydraulic Tank (Implement and Hydraulic Fan)
68.9 gal
Hydraulic Tank (Steering and Braking)
34.9 gal

Operating Specifications

Operating Weight
202398 lb
Rated Payload
92990 tons
Rated Payload - Standard
81896 tons

Hydraulic System - Steering

Steering System - Circuit
Pilot, load sensing
Steering System - Pump
Piston, variable displacement
Relief Valve Setting - Steering
4641 psi
Maximum Flow @ 1,400 rpm
94.5 gal/min
Total Steering Angle
70° Degrees

Hydraulic System - Lift/Tilt

Cylinders, Double Acting: Lift, Bore and Stroke
254 mm × 1264 mm (10.0 in × 49.8 in)
Cylinders, Double Acting: Tilt, Bore and Stroke
317.5 mm × 819 mm (12.5 in × 32.2 in)
Lift/Tilt System
Variable displacement piston
Maximum Flow at 1,800 rpm
216 gal/min
Maximum Flow at 1,800 rpm
22.2 gal/min
Pilot System
Open loop and pressure reducing
Relief Valve Setting
507 psi
Lift/Tilt System - Circuit
Positive flow control
Relief Valve Setting - Lift/Tilt
4786 psi

Brakes

Brakes
SAE J1473 OCT90, ISO 3450:1992

Transmission

Transmission Type
Cat planetary power shift
Forward 1
4.5 mph
Forward 2
8.3 mph
Forward 3
14.2 mph
Reverse 1
4.9 mph
Reverse 2
9.1 mph
Reverse 3
15.5 mph
Direct Drive - Forward 1
Lock-up disabled
Direct Drive - Forward 2
8.5 mph
Direct Drive - Forward 3
15.2 mph
Direct Drive - Reverse 1
5.4 mph
Direct Drive - Reverse 2
9.6 mph
Direct Drive - Reverse 3
16.4 mph

Hydraulic Cycle Time

Rackback
4.8 Seconds
Raise
9.4 Seconds
Dump
2.9 Seconds
Lower
3.7 Seconds
Lower Float Down
3.6 Seconds

Sound Performance - Standard

Machine Sound Level (ISO 6395:2008)
115 dB(A)
Operator Sound Level (ISO 6396:2008)
69 dB(A)

Sound Performance - Suppression

Machine Sound Level (ISO 6395:2008)
113 dB(A)
Operator Sound Level (ISO 6396:2008)
69 dB(A)

Axles

Front
Fixed
Rear
Trunnion
Oscillation Angle
8.5°
Efficiency

Efficiency

Delivering fuel efficiency you demand through integrated machine systems.

Cat® C27 ACERT™ Engine

The Cat C27 ACERT engine is built and tested to meet your most demanding applications while meeting Tier 4 Final or Tier 2 equivalent emission standards.

  • Fully integrated electronic engine controls work in concert with the entire machine to make your fuel go farther.
  • Use less fuel idling with Engine Idle Shutdown.
  • Maximized durability with Delayed Engine Shutdown.

Cat Planetary Powershift Transmission

Maximize your uptime with the proven planetary power shift transmission. Improved shift quality, component life and operator comfort with our electronic transmission controls.

Impeller Clutch Torque Converter (ICTC)

Enable your operators to maximize efficiency by varying machine rimpull while putting more horsepower to hydraulics.

  • Reduced tire wear
  • Enables full throttle shifts for faster cycle times
  • Provides smooth approach to the dump target for less spillage and faster cycle times.

Cat Torque Converter with Lock-up Clutch

  • Eliminates TC losses while lowering system heat
  • Improves travel speeds
  • Reduces cycle times in load and carry operations

Economy Mode

Enabling maximum productivity and efficiency, all day every day. The 990K systems work hard to save you fuel through advanced technologies. Utilizing On Demand Throttle, operators maintain normal operation with the left pedal and implements while the 990K manages the engine speed.

  • Provides similar control and feel to our traditional throttle lock feature.
  • Efficiency of manual throttle and the ergonomics of throttle lock.

Structures

Structures

Best built for the toughest conditions.

Robust Structures

Your bottom line is improved by highly durable structures that achieve multiple life cycles and withstand the toughest loading conditions.

  • Full box-section rear frame resists torsional shock and twisting forces.
  • Heavy-duty steering cylinder mounts efficiently transmit steering loads into the frame.
  • Axle mounting has been optimized for increased structural integrity.

Front Linkage

To ensure long life and reliability, the linkage pin joints feature a greased pin design with an auto lube system attachment available from the factory.

Lift Arms

  • High load stresses are absorbed by the solid steel lift arms.
  • Enhance strength in key pin areas through the use of one piece castings.
  • Stress relieved lift arms increase durability and lengthen time to repair.

Power Train

Power Train

Move material more efficiently with improved power and control.

Steering and Transmission Integrated Control System (STIC™)

Experience maximum responsiveness and control with STIC that combines directional selection, gear selection and steering into a single lever.

  • Simple side-to-side motion turns machine right or left, minimizing operator movements.
  • Easy to operate finger controlled gear selection.
  • Smoother, faster cycles and less operator fatigue through the use of low effort integrated controls.

Cat Planetary Powershift Transmission

Building your success begins with a best-in-class transmission designed specifically for mining applications.

  • Consistent, smooth shifting and efficiency through integrated electronic controls.
  • Long life and reliability through heat treat gear and metallurgy.
  • Three forward and three reverse speeds to match your application.

Cat C27 ACERT Engine

Durability and efficiency at the heart of your 990K comes from the Cat C27 ACERT Engine. Optimum performance is built in through the use of a 12 cylinder, direct injection design.

  • Optimized performance and quick engine response with an electronic control module.
  • Reliable efficiency with complete control over injection timing, duration and pressure with Mechanically Actuated Electronic Unit Injection (MEUI™).
  • Extended engine life and improved fuel efficiency with reduced rated speed.
  • Available in two versions: one that meets Tier 4 Final emission standards, and another that meets Tier 2 equivalent emission standards.

Impeller Clutch Torque Converter (ICTC) and Rimpull Control System (RCS)

Lower your cost per ton utilizing advanced ICTC and RCS for modulated rimpull.

  • Reduce tire slippage and wear by modulating rimpull from 100 to 25 percent while depressing left pedal. After 25 percent rimpull is achieved the left pedal applies the brake.
  • Reduce the potential for wheel slippage without reducing hydraulic efficiency with RCS.
  • Improve fuel efficiency in certain applications with our lock-up clutch torque converter providing direct drive.

Hydraulics

Hydraulics

Productivity enabling you to move more and make more.

Positive Flow Control Hydraulics

Increase efficiency through our Positive Flow Control (PFC) Hydraulic System. PFC has concurrent pump and valve control. By optimizing pump control, hydraulic oil flow is proportionate to implement lever movement.

  • Fast, productive cycles are enabled by the fully variable implement pump.
  • Increase fork feel and control through increased hydraulic response.
  • Consistent performance and efficiency with lower system heat.
  • Full hydraulic flow down to 1,400 engine rpm enabled by flow sharing technology.

Electro Hydraulic Controls

Operators increase productivity with our responsive implements feature.

  • Operate comfortably through electronically controlled hydraulic cylinder stops.
  • Handle easy-to-use soft detent controls.
  • Conveniently set automatic implement kickouts from inside the cab.

Steering System

Confident loader operation starts with precise machine control enabled by the 990K’s load sensing hydraulic steering system.

  • Increase efficiency with our variable displacement piston pumps.
  • Achieve precise positioning for easy loading in tight areas with 35 degrees of steering articulation.
  • Enhance operator comfort with integrated steering and transmission control functions.

Filtration System

Benefit from extended performance and reliability of your hydraulic system with our advanced filtration system.

  • Case drain screens.
  • Hydraulic oil cooler return filter.
  • Pilot filter.
  • Return screens inside hydraulic tank.
  • Axle oil cooler screens if equipped.

Operator Station

Operator Station

Best-in-class operator comfort and ergonomics.

Your operators can work more efficiently and stay comfortable with our customer-inspired cab features.

Entry and Exit

Enter and exit the cab easily and safely with these newly designed, ergonomic features.

  • Fold up STIC steer/armrest.
  • Reduced access stairway angles.
  • Standard stairway lighting.

Cat Comfort Series III Seat

Enhance comfort and reduce operator fatigue with Cat Comfort Series III seat.

  • Mid back design and extra thick, contoured cushions.
  • Air suspension system.
  • Easy-to-reach seat levers and controls for six way adjustments.
  • Seat-mounted implement pod and STIC steer that moves with the seat.
  • 76 mm (3 in) wide retractable seat belt.
  • Optional heated and ventilated seat.

Control Panel

Ergonomic placement of switches and information display keep your operators comfortable all day every day.

  • Large backlit membrane switches feature LED activation indicators.
  • Switches feature ISO symbols for quick function identification.
  • Two position rocker switch activates the electro hydraulic park brake.

Environment

Your operator’s productivity is enhanced with our clean, comfortable cab environment.

  • Experience reduced vibrations from isolation cab mounts and seat air suspension.
  • Maintain desired cab temperature with automatic temperature controls.
  • Pressurized cab with filtered air.
  • Sound level reduced to a quiet 69 dB(A).
  • Convenient floor storage tray/lunch box.

Technology Solutions

Technology Solutions

Greater productivity through Integrated Electronic Systems.

The 990K electronic systems have been completely integrated to function as one machine. This integration creates a smart machine and more informed operator, maximizing the productivity of both.

Cat Product Link™

Cat Product link allows remote monitoring of equipment to improve overall fleet management effectiveness. Events and diagnostic codes, as well as hours, fuel, idle time and other information are transmitted to a secure web based application, VisionLink®. VisionLink includes powerful tools to convey information to users and dealers, including mapping, working and idle time, fuel level and more.

VIMS™ 3G

We have worked hard to help our customers and operators perform at their best through our Vital Information Management System (VIMS 3G).

  • Easy-to-view graphical information display features a large touch screen interface.
  • Intuitive operation and easy navigation with our enhanced user interface.
  • Decrease service time by keeping operators informed about machine system malfunction or operation.

Serviceability

Serviceability

Enabling high uptime by reducing your service time.

We can help you succeed by ensuring your 990K has design features to reduce your downtime.

  • Safe and convenient service with ground level or platform access and grouped service points.
  • Swing-out doors on both sides of the engine compartment provide easy access to important daily service checks.
  • Ecology drains for ease of service and spill prevention.
  • Reduce downtime with VIMS system notifications so your operators and technicians can resolve any problems before failure.
  • Ground level access to transmission control valves.

Customer Support

Customer Support

Your Cat dealers know how to keep your machines productive.

Legendary Cat Dealer Support

A valued partner, your Cat dealer is available whenever you need them.

  • Preventive maintenance programs and guaranteed maintenance contracts.
  • Best-in-class parts availability.
  • Improve your efficiency with operator training.
  • Genuine Cat Remanufactured parts.

Safety

Safety

Making your safety our priority.

We are constantly introducing features on our machines in an effort to enhance safety for the operators.

Machine Access

  • Left and right hand stairs with 45 degree angle enhance safety for operators getting on and off the 990K.
  • Continuous walkway with non-skid surfaces are designed into the service areas.
  • Maintain three points of contact at all times through ground level or platform accessible service areas.

Visibility

  • Optional heated mirrors ensure enhanced visibility for safe operation.
  • Standard Cat Vision or optional Cat Detect with radar increase operator awareness around the machine.
  • Optional HID or LED lights provide excellent workspace visibility.
  • Optional cab mounted LED warning beacons.

Operator Environment

  • Reduced vibrations to the operator with isolated cab mounts and seat mounted implement and steering controls.
  • Low interior sound levels.
  • Pressurized cab with filtered air.
  • Safely train other operators in comfort with our standard training seat.
  • Standard 76 mm (3 in) seat belts on the operator seat and the standard trainer seat.

Sustainability

Sustainability

Making sustainable progress possible.

Sustainable Benefits

Sustainability is designed and built into our 990K’s features.

  • Engine Idle Shutdown can help you save fuel by avoiding unnecessary idling.
  • The 990K is built for multiple lives. To assist with maximizing machine life, Caterpillar provides a number of sustainable options such as our Reman and Certified Rebuild programs. In these programs, reused or remanufactured components can deliver cost savings of 40 to 70 percent, which lowers operating cost.
  • Caterpillar offers retrofit packages to bring new features to older machines, maximizing your resource. And, when you go through the Cat Certified Rebuild program, these retrofit kits are part of the rebuild process.

Cat Forks

Cat Forks

Efficiency with forks designed for your application.

Efficiency and Durability

Cat forks are designed for maximum productivity and durability. Whether unloading trucks in a single pass or reclaiming wood the high capacity forks bring productivity to your operation.

  • Bypassing style top clamp design to clasp full or partial truck loads.
  • Heavy duty top clamp design with durable mesh guarding to contain debris and protect the cab.
  • Pivoting tines with replaceable tips for efficient log reclaim.
  • Integrated front camera mounting location for maximum visibility to the tine tips for truck unloading.

  • OPERATOR ENVIRONMENT
  • POWER TRAIN
  • ELECTRICAL
  • OTHER