Komatsu GD655-5

GD655-5

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New Automatic Dual-mode Transmission Includes a Non-stall Function
Makes smooth low-speed operation automatic

20% Less Fuel Consumptionwith Two Mode Operation
Fuel consumption decreased by 20% compared with Komatsu's conventional model typical test data.

Operator Friendly Cab
All-around visibility with low operation noise

Fuel Economy Features
• Selectable working modes, [P mode] and [E mode]
• Operator can choose [Auto mode] or [Manual mode] with the new automatic dual-mode transmission

More Comfortable Operator Environment
• The new hexangular cab with front Y pillar and rear layout side pillar affords all-around visibility of the moldboard and front
• Low operating noise – Noise levels in operating conditions are significantly lowered

KOMTRAX® equipped machines can send location, SMR and operation maps to a secure website utilizing wireless technology. Machines also relay error codes, cautions, maintenance items, fuel levels, and much more.

Maximum Productivity
• Environment friendly Komatsu SAA6D107E-1 engine complies with EPA Tier 3 emissions
• Smooth operation without the engine stalling at low speed and maximized productivity with the automatic dual-mode transmission
• Excellent blade controllability through a Closed-center Load Sensing (CLSS) hydraulic system with multifunctional control valves with float and Pilot Check Valve (PCV)
• Aggressive moldboard angles are possible with the long wheelbase
• Steering wheel and conventional mechanical levers provide predictable, low effort control

Easy Serviceability
• Easy radiator cleaning with a manually actuated reversing fan
• Easy fueling from ground level
• Large hinged lockable doors provide easy access to the engine and radiator
• KOMTRAX®

Engine    
Model   Komatsu SAA6D107E-1*
Type   Water-cooled,4-cycle,direct injection
Aspiration   Turbocharged and air-to-air aftercooled
Number of cylinders   6
Bore 4.21" 107 mm
Stroke 4.88" 124 mm
Piston displacement 408 in3 6.69 ltr
Gross horsepower (Manual mode):    
P-mode    
Gear 1-3 @2000 rpm 183 HP 136 kW
Gear 4-6 @2000 rpm 203 HP 151 kW
Gear 7-8 @2100 rpm 221 HP 165 kW
E-mode    
Gear 1-3 @2000 rpm 148 HP 110 kW
Gear 4-6 @2000 rpm 183 HP 136 kW
Gear 7-8 @2000 rpm 203 HP 151 kW
Net flywheel horsepower** (Manual mode):    
P-mode    
Gear 1-3 @2000 rpm 180 HP 134 kW
Gear 4-6 @2000 rpm 200 HP 149 kW
Gear 7-8 @2100 rpm 218 HP 163 kW
E-mode    
Gear 1-3 @2000 rpm 145 HP 108 kW
Gear 4-6 @2000 rpm 180 HP 134 kW
Gear 7-8 @2000 rpm 200 HP 149 kW
Max. torque @1450 rpm 694 lb.ft. 941 Nm 96.0 kg•m
Torque rise   31%
Fan speed   Max. 1500 rpm
Air cleaner   2-stage, dry-type
Electrical   24 Volt with 90 Amp alternator
Battery   2, low maintenance plus, 12 Volt, 1146 CCA
* EPA Tier 3 and EU Stage 3A emissions certified    
** Net flywheel HP output for standard SAE J1349 including air cleaner, alternator (not charging), water pump, lubricating oil, fuel pump, muffler and fan running at minimum speed.    
     
Transmissions and Torque Converter    
Full power shift transmission with integral free-wheeling stator torque converter and lockup.    
Speeds (at rated engine speed)    
Gear Forward Reverse
1st 2.1 mph  
3.4 km/h 2.8 mph  
4.5 km/h    
2nd 3.1 mph  
5.0 km/h 5.7 mph  
9.2 km/h    
3rd 4.3 mph  
7.0 km/h 12.6 mph  
20.3 km/h    
4th 6.3 mph  
10.2 km/h 25.0 mph  
40.3 km/h    
5th 9.6 mph  
15.4 km/h -  
6th 13.9 mph  
22.3 km -  
7th 19.0 mph  
30.6 km/h -  
8th 27.5 mph  
44.3 km/h -  
     
Front Axel    
Type   Solid bar construction welded steel sections
Ground clearance at pivot 2'0" 620 mm
Wheel lean angle, right or left   16°
Oscillation, total   32°
     
Rear Axle    
Alloy steel, heat treated, full floating axle with lock/unlock differential    
     
Tandem Drive    
Oscillating welded box section 1'8" x 8" 520 mm x 202 mm
Side wall thickness:    
Inner 0.87" 22 mm
Outer 0.75" 19 mm
Wheel axle spacing 5'0" 1525 mm
Tandem oscillation   11° forward, 13° reverse
     
Wheels, Front and Rear    
Bearings Tapered roller  
Tires 17.5R25  
Tire rims (demountable) 13" one-piece rims  
     
Steering    
Hydraulic power steering providing stopped engine steering meeting SAE J53 and J1151.    
Minimum turning radius 24'3" 7.4 m
Maximum steering range, right or left   49°
Articulation, right or left   25°
     
Brakes    
Service brake Foot operated, sealed wet disc brakes, hydraulically actuated on four tandem wheels, 13691 cm2 / 2,122 in2 total braking surface  
Parking brake Manually actuated, spring applied, hydraulically released caliper with transmission interlock  
     
Frame    
Front Frame Structure    
Height 11.8" 300 mm
Width 11.8" 300 mm
Thickness 0.55" 14 mm
     
Drawbar    
A-shaped, U-section press formed and welded construction for maximum strength with a replaceable drawbar ball.    
Drawbar frame 8.3" x 1" 210 x 25 mm
     
Circle    
Single-piece rolled ring forging. Six circle support shoes with replaceable wear surface. Circle teeth hardened on front 180¢ª of circle.    
Diameter (outside) 5'0" 1530 mm
Circle reversing control hydraulic rotation   360°
     
Moldboard    
Hydraulic power shift fabricated from high carbon steel. Includes replaceable metal wear inserts, cutting edge and end bits. Cutting edge and end bits are hardened.    
Dimensions 14' x 26" x 0.87" 4320 x 660 x 22 mm
Arc radius 1'1" 329 mm
Cutting edge 6" x 0.63" 152 x 16 mm
     
Blade Range    
Circle center shift:    
Right 1'11" 590 mm
Left 1'11" 590 mm
Moldboard side shift:    
Right 2'8" 820 mm
Left 2'8" 820 mm
Maximum shoulder reach outside rear tires (frame straight)    
Right 6'4" 1940 mm
Left 6'4" 1940 mm
Maximum lift above ground 1'7" 480 mm
Maximum cutting depth 2'0" 615 mm
Maximum blade angle, right or left   90°
Blade tip angle 40° forward 5° backward
     
Hydraulic System    
Load-sensing closed center 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, tip, circle shift, articulation, and leaning wheels.    
Output @ 2000 rpm 52.8 u.s.gal/min 200 ltr/min
Standby pressure 500 psi 3.4 MPa 35 kg/cm2
Maximum system pressure 3,000 psi 20.6 MPa 210 kg/cm2
     
Instrumentation    
Electric monitoring system with diagnostics:    
Gauges - Standard: articulation, engine coolant temperature, fuel level, speedometer, T/M shift indicator, engine tachometer torque converter oil temperature  
Warning lights / Indicator - Standard: battery charge, brake oil pressure, blade float, brake oil pressure, inching temperature, directional indicator, engine oil pressure, hydraulic oil temperature, heater signal, lift arm lock, parking brake, differential lock, torque converter oil temperature, eco, P mode, fan reverse, rpm set, high beam, working lights
Optiona3 blade accumulator  
     
Service Refill Capacities    
Fuel tank 109.9 u.s. gal 416 ltr
Cooling system 6.6 u.s. gal 24.9 ltr
Crank case 6.1 u.s. gal 23.1 ltr
Transmission 11.9 u.s. gal 45 ltr
Final drive 4.5 u.s. gal 17 ltr
Tandem housing (each) 15.1 u.s. gal 57 lt
Hydraulic system 18.2 u.s. gal 69 ltr
Circle reverse housing 1.8 u.s. gal 7 ltr
     
Operating Weight (approximate)    
Standard configuration without pushplate    
Total 35,351 lb 16035 kg
On rear wheels 25,534 lb 11582 kg
On front wheels 9,817 lb 4453 kg
With rear mounted ripper and front push plate:    
Total 39,505 lb 17916 kg
On rear wheels 27,944 lb 12673 kg
On front wheels 11,561 lb 5243 kg
With mid-mounted scarifier, without front pushplate:    
Total 36,665 lb 16631 kg
On rear wheels 25,708 lb 11661 kg
On front wheels 10,957 lb 4970 kg
• Front pushplate weight 1075 kg 2,371 lb    
• Operating weight based on the standard machine configuration with 17.5R25 tires, 14' moldboard, full fuel tank, coolant, lubricants, and operator