January 15, 2014, Peoria, Ill. - The Cat® 834, introduced in
the mid-1960s, has set the standard for wheel dozer design and performance for
almost 50 years, ensuring customers optimum productivity, durability and
availability through multiple life cycles. The new 834K builds on the strengths
of its predecessors with a completely new cab, drive train refinement, new
monitoring and diagnostic features, new safety features and structural
enhancements. Available blade types include straight, universal, semi-universal
and coal, ranging in capacity from 10.3 to 29.0 cubic yards (7.9 to 22.2 m³).
Rated at 496 net horsepower (370 kW), the Cat C18 engine
used in the 834K is available in three configurations to tailor the machine for
any region of the world: Tier 4 Final (Stage IV) using a diesel particulate
filter and a selective catalytic reduction system to control emissions; Tier 3
equivalent without after-treatment; and Tier 2 equivalent without
The C18 uses the field proven Cat mechanically actuated,
electronic unit-injection system for precise control of fuel delivery, yielding
optimum performance and economy in all operating situations. Fuel-saving
enhancements for the 834K include engine-idle-shutdown and engine-idle
kick-down systems, and the delayed-engine-shutdown system protects the engine
from hot shut-downs. An on-demand, hydraulically driven cooling fan reduces
horsepower draw for increased efficiency.
The Cat 4F/3R planetary power-shift transmission used in the
834K features a new Advanced Productivity Electronic Control Shifting system,
which is designed to provide greater machine momentum through shift points,
enhancing performance and saving fuel. Forced-flow oil lubricates and cools the
transmission high-torque clutches to ensure long component life.
For increased productivity and precise control, the impeller
clutch torque converter (ICTC) allows the operator to adjust rimpull from 100
to 25 percent in order to match hydraulic effort and rimpull to the operating
situation. The ICTC system reduces tire wear and permits full-throttle shifts
for greater productivity.
The 834K axles feature shaft-mounted, oil-cooled,
multiple-disc brakes. The braking system can be equipped with auxiliary oil
coolers for added protection. To reduce brake loads, an available automatic
retarding system maintains a set downhill speed, minimizing brake use.
New operator station
The 834K features a completely redesigned operator station,
with automatic temperature control, new touch-screen display with soft keypad,
electro/hydraulic parking brake, and the Cat Comfort III seat with air-ride
suspension and integral controls—including the Steering Transmission Integrated
Control (STIC) that allows convenient joystick steering. Interior sound levels
also are significantly reduced to a quiet 71 dB(A).
The 843K also is equipped with the Cat next-generation Vital
Information Management System (VIMS™ 3G), which features a large touch-screen
interface and easy-to-use navigation to keep operators informed of machine
operating parameters. The system, with data-logging capability, features an
Ethernet connection module and an integrated Cat Product Link telematics
system, which transmits data to a secure web-based application (VisionLink™)
for use by equipment managers.
Reflecting the solid design of its predecessors, the new
834K retains its massive full-box-section rear frame that resists torsional
shock and twisting forces. Heavy-duty steering cylinder mounts are designed to
transfer and effectively dissipate steering loads into the frame. Blade-
mounting push beams have a "through-width" design, versus simply
being attached to the sides of the frame, a design that dissipates the stress
of blade corner-loading into a larger area of the frame.
New for the 834K is a redesigned rear-axle trunnion, now
wider and bolted directly to the frame rails, eliminating the previously used
intermediate casting and allowing loads to be more effectively dispersed. In
addition, the lower articulation point (lower hitch) has been strengthened with
an increase in front frame plate thickness and a significant increase in pin
diameter in conjunction with a larger bearing.
A major design focus of the 834K is operator safety, and to
that end, the new model features a standard rearview camera, repositioned
access ladders, full-perimeter railings and convenient ground-level panel that
houses a stairway light switch, engine-shut-down switch and lockouts for the
starter and transmission. Available for the 834K is the Cat Detect system,
which supplements the rearview camera with radar sensors on the rear of the
machine to provide both audible and visual indicators of objects in its working
Routine service points are accessible from ground level or
from large, skid-resistant platforms. Swing-out doors on both sides of the
engine give ready access to daily maintenance items, and ecology fluid drains
facilitate service and protect the environment. For added convenience, the
Electronic Technician diagnostic port and the VIMS service port are
conveniently located in the cab.