PC1000-1 Komatsu excavator specs & Dimensions (1988 - 1995)

Super Earthmover Configuration

Super earthmover (SE) configuration — developed for mass excavation applications, features larger bucket capacity, greater breakout force, shorter cycle times and increased production.

Low-Noise Operation

Low-noise operation — is promoted by advanced EOLSS hydraulics, a closed engine compartment and a rubber mounted engine. All of which contribute to a low noise level inside the cab.

Advanced Hydraulic...Minimized Fuel Consumption

Mode selection system — prevents undue fuel and power loss by matching the driving horsepower of the pumps to the specific task at hand. The operator may set the excavator in any one of three modes by simply setting the mode selection switch on the monitoring panel. The Heavy-Duty mode is used when maximum force is required. The Standard-Duty mode is for general digging and loading and the Light-Duty mode enables the operator to maintain quick cycle times and save fuel during light operations (such as slope finishing).

Digging Control

Circular arc or level digging switch — eliminates complex lever movements. A three way switch allows the operator to choose between circular arc or level digging. The third switch position activates the bucket angle compensation function during level digging to prevent spillage.

Komatsu SA6D170 Diesel Engine

Komatsu SA6D170 diesel engine — assures low fuel consumption. It delivers an ample 405 kW (542 HP) power, making easy work out of heavy-duty digging and loading. It adopts a direct-injection fuel system for greatly improved combustion efficiency. In addition, the lightweight design and reduced friction between moving parts further boost fuel economy. The turbocharger and aftercooler allow the SA6D170 to maintain high performance even on high-altitude jobsite.

Electronic Open-center Load Sensing System

Electronic Open-center Load Sensing System (EOLSS) — electronically controls oil flow from the three variable capacity piston pumps so that unnecessary oil flow can be eliminated and fuel consumption significantly reduced. A microcomputer matches oil discharge volume to engine speed (even at high altitudes) so that engine output power can be effectively utilized. This also reduces fuel consumption since the engine is not generating unused power.

Autodecelerator System

Autodecelerator system — automatically reduces engine speed when the work equipment and travel controls are in neutral. Why waste fuel waiting on the dump truck? Following a short time delay, so fine control work will not be affected, a solenoid valve automatically slows the engine and saves you fuel.

Komatsu OLSS System

Komatsu OLSS System — minimizes hydraulic loss during operation. This hydraulic sub-system functions to reduce three types of hydraulic loss. Reduction of neutral loss: When control levers are positioned in neutral, unnecessary oil flow is detected by the Negative Control valve, so the amount of oil discharged from the hydraulic pumps is reduced to a minimum. Reduction of fine control loss: When precise operation such as finishing, hoisting, centering, or loading into a dump truck is required, a large volume of oil flow is usually wasted. The OLSS detects such unused oil flow in the form of pressure by the jet sensor and minimizes oil generation from the pumps, increasing fuel economy. Reduction of relief loss: When the work equipment hits a hard obstacle, oil is drained to protect it from damage. In such a case, the OLSS senses the status and the cut-off valve regulates oil output from the pumps in response to the amount of unused oil, resulting in greatly reduced hydraulic loss and noise.

Swing Holding Brake

Swing holding brake — automatically prevents hydraulic drift of the machine even when it’s parked on a slope. The operator is no longer required to physically maintain a braking device during work equipment operation. Also, the swing control is equipped with a closed center spool valve for smooth starts and stops.

Cushion Mechanism

Cushion mechanism — in the arm cylinder and head end of boom and bucket cylinders absorbs operating shocks from cylinder extension and retraction, increasing both operating comfort and component life.

System Provides...Smooth Powerful Operation

Independent swing circuit — combined with the use of merged arm circuits provide smooth bucket movements and fast cycle times. This three pump system with an independent swing pump allows compound operation of the swing and arm and/or boom circuit without sacrificing speed. This feature is especially valuable in leveling, slope finishing or other application where frequent arm action is required.

Straight Travel Valve

Straight travel valve — automatically interlocks the left and right hydraulic circuits allowing the machine to always travel straight, even when simultaneously operating the work equipment.

Smooth Swing Action

Smooth swing action — is assured with a control-valve-operated swing system. Swing stops and starts are smooth and firm.

Two Speed Travel

Two speed travel — allows the machine to achieve extra pulling power during extremely rough ground conditions or uphill travel applications.

Operator Comfort for Maximum Productivity

Human engineered cab — is both roomy and efficient. The large area of tinted glass allows the operator excellent visibility. Five-way seat with armrests, short stroke wrist-control levers, pull-up front window and travel pedals with levers work together to help your operator maximize production.

Wrist Control Levers

Wrist control levers — for easy work equipment operation. The armrest-mounted wrist control levers have a maximum stroke of only 75mm (3") and Komatsu’s Proportional Pressure Control System reduces operating effort for precise control of work equipment.

Variable Track Gauge

Variable track gauge — is provided for shipping convenience. By adjusting the track gauge inward the width of the machine can be decreased by 460 mm (18.1").

Standard Equipment

Air conditioner with heater defroster Air cleaner, dry type with auto evacuator Alternator (35A) Auto decelerator Cab includes: tinted safety glass, windshield washer and wiper, adjustable door, electric horn, room lamp, floor mat, left side rear view mirror, sun visor Cab, high mount (Loading Shovel only) Centralized lubrication system Counterweight 14000 kg (32,100 lb) Electronic open center load sensing hydraulic system Front lights (2) Fuel level sight gauge Hydraulic level sight gauge Hydraulic track adjuster with shock absorbing accumulator Hydrostatic drive Lock valves, boom and arm Monitoring system Proportional pressure control system Seat, suspension and reclining with seat belt Tracks, sealed Travel roller guards, front, center, and rear Vandalism protection locks Variable track gauge Wet disc track brakes.