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Diesel Drive   
Model    Komatsu SSA12V159 
Type    4-cycle, water-cooled, direct injection 
Aspiration    Turbocharged and intercooled 
Number of cylinders    12 
Rated power (SAE 1995/J1349) @ 1800 rpm  1,260 HP  940 kW 
Governor    All-speed, electronic 
Optional engine oil management system:  The integrated engine oil and filter system combining the oil stabilising systems, Reserve and Centinel, with the Eliminator self cleaning oil filter extends, with oil analysis, the oil change interval to 4000 hours.   
System    24 V 
Batteries (series/parallel)    4 x 12 V 
Alternator    150 A 
Standard working lights    8 Xenon lights 
Service lights    8 lights 
The power train consists of one main drive. Diesel engine or electric motor can be supplied. One gearbox drives three identical main pumps which draw hydraulic oil from an unpressurized hydraulic tank. Open circuit hydraulics provide maximum cooling and filtering efficiency.

The three-circuit Hydropilot system features electronic engine and pump management to optimise hydraulic power for smooth hydraulic action, fast response, simple system layout and a reduced number of components. Filtration is at the oil intake to pumps, valve blocks, heat exchangers and oil tank. 
Main hydraulic pumps  3x240 U.S. gal  3x910 ltr/min 
Relief valve setting  4,495 psi  310 bar 
Swing flow rate  211 U.S. gal/min  800 ltr/min 
High pressure in line filters
one per pump located at the valve blocks 
  200 microns 
Full flow return line filters 3 x 10 microns and leakage line filter 3 microns all with monitored by pass filters 200 microns.
at head of tank 
Drives & Brakes   
Travel control    2 foot pedals 
Gradeability    Up to 57% 
Travel speed (maximum)  1.5 mph  2.4 km/h 
Service brake    Hydraulic 
Parking brake    Wet, multiple-disc 
Swing System   
Hydraulic motors and drives   
Swing brake, service    Hydraulic 
Swing brake, parking    Wet, multiple disc 
Swing ring teeth    External 
Swing speed (maximum)    4.6 rpm 
Cooling System   
The high capacity engine radiator is cooled by a mechanically driven fan for superior cooling efficiency and requires little maintenance. The hydraulic system includes two large swing-out vertical air-to-oil hydraulic coolers with temperature-regulated hydraulically driven fan. 
Electric Drive   
Type    Squirrel-cage induction motor 
Power output    900 kW 
Voltage    6600 V* 
Amperage (approximate)    96 A 
Frequency (standard) @ 1500 rpm    50 Hz 
Optional frequency @ 1800 rpm    60 Hz 
*Other voltages available on request.     
The undercarriage consists of one center carbody and two track frames, each side attached by 38 high torque bolts. 
Center frame    H-type 
Track frame    Steel box-section 
Track adjustment    Automatic hydraulic type 
Number of shoes    46 each side 
Number of top rollers    3 each side 
Number of bottom rollers    7 each side 
Automatic Centralized Lubrication   
Two hydraulically powered Lincoln single line automatic lubrication systems are provided as standard, complete with time and volume variable controls. Activity and malfunction events are linked to the ETM. The central lube grease system is supplied from a refillable 200 liter 53 gal. barrel. A second, identical system supplies open gear lubricant to the swing ring teeth through a lube pinion. Replenishment of the barrels is through the service center. 
Service Refill Capacities   
Hydraulic oil tank  765 U.S. gal  2900 ltr 
Hydraulic system  1,160 U.S. gal  4400 ltr 
Fuel  1,190 U.S. gal  4500 ltr 
Engine coolant  95 U.S. gal  360 ltr 
Engine oil  50 U.S. gal  190 ltr 
The large welded steel cab incorporating the ISO 3449 FOPS Level 2 structure is vibration isolated with 15 viscous combination pads and sound insulated to 75 dB(A). It is equipped with automatic climate control and is pressurized. The operatorīs seat is air suspended, electrically heated and has a lap seat belt.

There is a trainer seat with belt.

Low effort joystick controls are hydraulic with foot controls for front shovel clam, crawler and swing brake.

Full instrumentation and Electronic Text Monitoring (ETM) are provided. AM/FM radio with CD player is included. Dual windshield wipers are synchronized with two-speed and intermittent operation.

2 heated rearview mirrors are externally mounted. External metal sun louvers and internal pull-down sun blinds. Left-hand sliding window. All windows are tinted parsol green. 
Vehicle Monitoring System   
The Electronic Text Monitoring (ETM) system, mounted in the operator’s console, continuously monitors the performance of the engine, gearbox, autolube and hydraulic systems. Fault messages are immediately available to the operator via a digital display and in the event of critical malfunctions the engine is also shut down.

The digital storage provides failure summary and analysis, which can be downloaded by laptop computer. This data will assist in predicting or reducing downtime. 

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