The new Cat 990K wheel loader offers more power and increased payload for greater productivity and fuel efficiency. The 990K also features a redesigned cab that delivers a superior operator interface and a quiet environment, as well as several new features that promote operator and maintenance technician safety and performance. Designed as an optimum loading tool for Cat construction and mining trucks, specifically the 773, 775 and 777 ranging from about 54 – 91 t capacity, the new 990K also features engine configurations to meet customer needs worldwide. The 990K builds on the proven features of previous models and replaces the 990H.
The rated payload of the new 990K is 16 t – up from 15 t payload of the H Series model. The increased payload makes the new loader a four-pass match with the Cat 775 truck for efficient, high-production loading. New, performance-series buckets promote fast filling and full bucket loads on every pass, and they are available in sizes ranging from 8.6 – 10 cubic meters.
The Cat C27 ACERT engine powers the 990K and delivers an 11% increase in power compared to the previous model. Net power of 699 521 kW helps deliver increased production – without any change in fuel consumption. Lower engine speed helps drive economical fuel use. Additional fuel savings accrue with the 990K ECO Mode (on-demand throttle), engine-idle shutdown system and engine-idle kickdown/auto-resume system.
The 990K is available as a US EPA Tier 4 Final version and as a Tier 2 version for less regulated regions. No regeneration or operator intervention is required for the NOx reduction system and diesel oxidation catalyst on the Tier 4 Final model. And there is no increase in fuel consumption as a result of the engine emissions control systems.
The Cat impeller clutch torque converter uses a lock-up clutch, providing direct drive to boost fuel economy, trim cycle times, and reduce heat, especially in load-and-carry applications. The system allows operators to balance rimpull and hydraulic power for optimum loading efficiency. Positive flow control implement hydraulics use a variable displacement, electronically controlled pump to precisely apportion oil flow based on operator control inputs.
The redesigned cab allows easy access and egress and features noise suppression that delivers a benchmark sound level of 69.9 dB(A) for superior operator comfort. The Cat Comfort III seat provides integrated seat-mounted controls for smooth and comfortable operation. Transmission controls, integral with the STIC™ steering lever, allow convenient travel control.
The operator station also features the Cat Vital Information Management System, VIM 3G, which provides customisable operator profiles, a cycle timer and an integral payload control system, which provides on-the-go payload weighing. The graphical information display is easy to use and keeps key information in front of the operator.
The 990K is equipped with the Cat Vision rearview camera system and in-cab display to show the operator the area behind the loader. The Cat Detect object detection system, available as an option, builds on the camera system with radars and in-cab software that provide notification to the operator when an object is detected within the radar coverage area. The systems are designed to enhance operator awareness, especially in congested loading areas.
For added safety, a remote panel houses a stairway light switch, engine shutdown switch, and lockouts for the transmission and engine starter. A second panel provides convenient access to the battery disconnect switch and a jump-start receptacle. Routine maintenance points are easily accessed, including hydraulic pressure taps and oil sampling ports.
The optional ground level service center reduces service time. It displays fluid level status, houses drain-and-fill ports and provides a data port for diagnostic work.
A number of additional options are available to tailor the loader for specific applications and sites. For example, the optional high lift linkage enables the 990K to load Cat 777 trucks. The integrated axle cooling package and ride control options are particularly beneficial in load-and-carry work.
Written by Caterpillar. Edited by Jonathan Rowland
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