GD555-3

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Engine   
Model    Komatsu SAA6D102E-2 
Type    Water-cooled, 4-cycle, direct injection 
Aspiration    Turbocharged and aftercooled 
Number of cylinders   
Bore  4.02''  102 mm 
Stroke  4.72''  120 mm 
Piston displacement  359 in  5.88 ltr 
Gross horsepower @ 2000 rpm*:     
GD555-3  147 HP  110 kW 
GD555-3 VHP***  167 HP  125 kW 
Net flywheel horsepower @ 2000 rpm**:     
GD555-3  140 HP  104 kW 
GD555-3 VHP***  160 HP  119 kW 
Peak torque @ 1500 rpm:     
GD555-3  425 lbfft  576 Nm 
GD555-3 VHP***  538 lbfft  729 Nm 
Torque rise    28 % 
Fan    7 blade, pusher 
Air cleaner    2-stage, dry-type 
Electrical    24 volt with 90 amp alternator 
Battery    2, low maintenance plus, 12 volt, 1146 cca each 
*Gross HP output for complete engine operating under SAE J1995 conditions.     
**Net flywheel HP output for standard SAE J1349 including air cleaner, alternator (not charging), water pump, lubricating oil, fuel pump, muffler, and fan.     
***VHP available in gear 4~8 forward     
Tier 2 emission certified     
Transmission and Torque Converter   
Full power shift transmission with integral free-wheeling stator torque converter and lock-up. 
Speeds (at rated engine speed)     
Gear  Forward  Reverse 
1st  2.1 mph / 3.3 km/h  2.7 mph / 4.4 km/h 
2nd  3.0 mph / 4.8 km/h  5.6 mph / 9.0 km/h 
3rd  4.2 mph / 6.8 km/h  12.2 mph / 19.7 km/h 
4th  6.1 mph / 9.8 km/h  24.3 mph / 39.1 km/h 
5th  9.3 mph / 14.9 km/h 
6th  13.4 mph / 21.6 km/h 
7th  18.4 mph / 29.6 km/h 
8th  26.7 mph / 42.9 km/h 
Brakes   
Service brake    Foot operated, sealed oil disc brakes, hydraulically actuated on four tandem wheels, 2,067 in / 13338 cm total braking surface. 
Parking brake    Manually actuated, spring applied, hydraulically released caliper with transmission interlock. 
Hydraulics   
Closed Center Load Sensing System (CLSS) hydraulics with variable displacement piston pump. short stroke/low effort direct acting control valves with preselected maximum flow setting to each function. double acting anti-drift check valves on blade lift, tilt, circle shift, articulation, and leaning wheels. 
Output @ 2000 rpm  54 gal/min  205 ltr/min 
Standby pressure  500 psi  35 kg/cm 
Maximum system pressure  3,000 psi  210 kg/cm 
Moldboard   
Hydraulic power shift fabricated from high carbon steel. Includes replaceable metal wear inserts, cutting edge, and end bits. Cutting edge is through-hardened. 
Dimensions  12' x 26" x 0.87"  3710 mm x 660 mm x 22 mm 
Arc radius  17''  432 mm 
Cutting edge  6'' x 0.63''  152 mm x 16 mm 
Replaceable/reversible end bits  6'' x 0.63''  152 mm x 16 mm 
Blade Range   
Circle center shift:     
Right  24.5''  625 mm 
Left  24.5''  625 mm 
Moldboard side shift:     
Right  32.3''  820 mm 
Left  32.3''  820 mm 
Maximum shoulder reach outside rear tires (frame straight):     
Right  78.7''  2000 mm 
Left  78.7''  2000 mm 
Maximum lift above ground  19.1''  485 mm 
Maximum cutting depth  32.9''  835 mm 
Maximum blade angle, right or left    90 
Blade tip angle    40 forward, 5 backward 
Circle   
Single piece rolled ring forging. Four circle support shoes with replaceable wear surface. Circle teeth hardened on front 180 of circle. 
Diameter (outside)  60.2''  1530 mm 
Circle reversing control hydraulic rotation    360 
Drawbar   
A-shaped, U-section press formed and welded construction for maximum strength with a replaceable drawbar ball. 
Drawbar frame  8.3"x 1.0"  210 x 25 mm 
Frame   
Section, welded unit (w x h)  11.8" x 11.6"  300 x 294 mm 
Side plate  9.8'' x 0.47''  250 mm x 12 mm 
Vertical section module, front frame:     
Minimum  131 in  2140 cm 
Maximum  297 in  4860 cm 
Linear weight per length, front frame:     
Minimum  102 lb/ft  151 kg/m 
Maximum  134 lb/ft  199 kg/m 
Front Axle   
Type    Solid bar construction welded steel sections 
Ground clearance at pivot  24''  610 mm 
Wheel lean angle, right or left    20 
Oscillation, total    32 
Rear Axle   
Alloy steel, heat treated, full-floating axle with lock/unlock differential. 
Tandem Drive   
Oscillating welded box section oil-tight housing  22.8'' x 8.7''  580 mm x 221 mm 
Sprocket drive chain, single strand  1.25" pitch  31.75 mm pitch 
Sidewall thickness:     
Inner  0.88''  22 mm 
Outer  0.75''  19 mm 
Wheel axle spacing  60.4''  1535 mm 
Tandem oscillation    13 forward, 13 reverse 
Steering   
Hydraulic power steering providing stopped engine steering meeting SAE J53 and J1511. 
Minimum turning radius  22'4''  6.8 m 
Maximum steering range, right or left    49 
Articulation, left or right    23 
Wheels, Front and Rear   
Bearings    Tapered roller 
Tires    Low pressure, tubeless, 14.00 x 24, 12 ply rating - G2 
Tire rims (demountable)    10.00 DC x 24 
Operator's Compartment   
Pivoting control console and tilt steering wheel. Deluxe suspension cloth-covered seat and backrest with swing-up armrests. Large glass area for all-around visibility. 
Capacities   
Fuel tank  89.8 U.S. gal  340 ltr 
Cooling system  11.1 U.S. gal  42 ltr 
Crankcase  3.8 U.S. gal  14 ltr 
Transmission  11.9 U.S. gal  45 ltr 
Final drive  3.2 U.S. gal  12 ltr 
Tandem housing (each)  21.9 U.S. gal  83 ltr 
Hydraulic system  22.5 U.S. gal  85 ltr 
Hydraulic tank  11.9 U.S. gal  45 ltr 
Circle reverse housing:  1.3 U.S. gal  5 ltr 
Operating Weight (approximate)   
Includes lubricants, coolant, full fuel tank, and operator. 
Total  30,950 lb  14040 kg 
On rear wheels  22,134 lb  10040 kg 
On front wheels  8,816 lb  4000 kg 
Instrument   
Electric monitoring system with diagnostics:     
Gauges:     
Standard    Articulation, engine coolant temperature, fuel level, hour meter, message center torque converter oil temperature. 
Warning lights:     
Standard    Battery charge, blade float, brake oil pressure, directional indicator,engine oil pressure, heater signal, lift arm lock, parking brake, transmission electric circuit and torque converter oil temperature 
Optional    Blade accumulator, differential lock, differential oil temperature, high beam, working lights. 

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