Crawler excavator - Bergmann Maschinenbau - #2

Two pumps are controlled by the Kato developed "APC" ( Automatic Power Control ) system, which senses where power is needed and automatically adjusts the pressure and flow-rate of the pump to match the work load. New "APC" system enables pump output to be utilized to the full with minimum fuel consumption. The adoption of joint circuit enables dual speed for boom derricking and arm extension/ retraction.

Pumps ................Double variable piston pump and gear pump

Max. discharge flow .............................................2 x 235 l/min

Max. discharge pressure ....................31.4 MPa (320 kgf/cm²)

Max. discharge pressure (travel circuit only) .............................

32.9 MPa (335 kgf/cm²)

Oil filtration.................Full-flow filter with replaceable element,

a drain cartridge filter, a pilot line filter and a suction strainer

Control valves ..................5 + 4 section multiple control valves

(with one free service circuit)

Pilot pump.................................................................Gear type

Oil cooler ..................................Finned tube, forced ventilation

Pressure relief valves ..........................Primary and secondary

on each circuit

Model ..................Mitsubishi 6D34-TLE2A, Diesel engine

Type.......................4 cycle water cooled, overhead valve

...........................direct injection, intercooler turbocharged

Number of cylinders-Bore & Stroke ..6-104 mm x 115 mm

Total displacement ...................................................5.86 l

Engine output ........110 kW @ 2,050 rpm (Based on ISO)

.............................................................(150PS/2,050 rpm)

Max. torque .........580 N«m @ 1,400 rpm (Based on ISO)

.........................................................(53 kgf'm/1,600 rpm)

Compression ratio ...................................................16.5:1

Combustion system ...................................Direct injection

Cooling system .............Pressurized water circulated by a

.......................................centrifugal pump with thermostat

Lubrication system...............Pressurized oil fed by a gear

............................................pump through cartridge filter.

Starter.................................................Electric, 24 V-5 kW

Generator.........................................Alternator, 24 V-35 A

Governor.........................................................Mechanical

Air cleaner....................................................Dry type filter

Spring-applied idlers protect the drives from shock. Adjust cylinder is provided for easy arrangement of the track tensioning. An all welded undercarriage frame gives clog-free clearance, and the drive motors are neatly housed inside the track frame. The crawler tracks with interchangeable shoes are supported by 7 lower rollers 2 upper rollers and a track guard on each side.

Travelling motors....................Independent axial piston motors

with reduction for each side

Brakes.......................Independent disk parking brake for each

side, applied automatically when the travel levers are in the neutral position

Track shoes ........................................46 each side HD820Effl

Track adjustment ..............Grease cylinders with recoil springs

Lubrication ................................Sealed-for-life rollers and front

idlers with floating seals

Travel speed with APC .................................High0 ~ 5.5 km/h

Medium 0 ~ 3.6 km/h Low 0 ~ 2.5 km/h

Gradeability...............................................................70% (35°)

Max. drawbar pull ....................................174.6 kN(17,800 kgf)

Ground clearance (less grouser bar) ...........................465 mm

Track length ............................................4,170 mm HD820Effl

The all-weather sound suppressed, 1,000 mm wide pressed steel cab is six point viscous mounted and has plenty of leg room. All windows are made of tinted safety glass. The front window can be raised and slid back so that it fits flush with the ceiling to provide improved visibility and ventilation. A cloth-covered, fully adjustable seat is provided. Operating conditions can be seen at a glance on safety Monitor.

Right hand lever ...........................Controls the boom & bucket

Inner right hand lever (with foot pedal)..........Controls the right

hand track

Inner left hand lever (with foot pedal) ..............Controls the left

hand track

Left hand lever..................................Controls the arm & swing

Pilot control.....................Travel, boom, arm, bucket and swing

Engine throttle ...........................................Electric "Accel dial"

Meter & gauges .......................Hour meter, water temperature

and fuel level

Monitor display.................Engine oil pressure, engine oil filter,

hydraulic oil filter, hydraulic oil tem­perature, water temperature, water level, fuel level, battery charge, APC monitor and air cleaner

Indicator lamps ....................................Caution lamp & Engine

preheater indicator lamp

Working lights ..........................Provided on the boom left side

and mounted on the frame

Lubrication chart..........................................Inside the tool box