KOMATSU GD655-6
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Year
2024
Manufacturer
Komastu
Model
GD655-6
Condition
New
Next-level grading
Looking for smooth accuracy in an operator-friendly machine? Powered by a unique dual-mode transmission, this grader has enhanced job site visibility and offers operators an exceptional tool for achieving surface precision.
- Exceptional visibility
- Smooth power and optimized control
- High flow hydraulics with on-demand CLSS valves for operator efficiency
- Dual engine power modes for increased fuel efficiency of up to 15%*
* compared to GD655-5
Engine
| Model | SAA6D107E-3* |
| Type | Water-cooled, 4-cycle, direct injection |
| Aspiration | Turbocharged, aftercooled, cooled EGR |
| Number of cylinders | 6 |
| Bore | 4.21 in |
| Stroke | 4.88 in |
| Piston displacement | 408 in3 |
| Gross horsepower (Manual mode): | |
| P-mode | |
| Gear 1-3 @ 2,000 rpm | 183 HP |
| Gear 4-6 @ 2,000 rpm | 203 HP |
| Gear 7-8 @ 2,100 rpm | 221 HP |
| E-mode | |
| Gear 1-6 @ 2,000 rpm | 183 HP |
| Gear 7-8 @ 2,000 rpm | 221 HP |
| Net horsepower** (Manual mode): | |
| P-mode | |
| Gear 1-3 @ 2,000 rpm | 180 HP |
| Gear 4-6 @ 2,000 rpm | 200 HP |
| Gear 7-8 @ 2,100 rpm | 218 HP |
| E-mode | |
| Gear 1-6 @ 2,000 rpm | 180 HP |
| Gear 7-8 @ 2,000 rpm | 218 HP |
| Max. torque @ 1,450 rpm | 694 lbs.-ft. |
| Torque rise | 30 % |
| Fan speed | Max. 1,450 rpm |
| Air cleaner | 2-stage, dry-type |
* EPA Tier 4 Final emissions certified.
** Net horsepower 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 lock-up.
| Speeds (at rated engine speed) | ||
| Gear | Forward | Reverse |
| 1st | 2.1 mph | 2.8 mph |
| 2nd | 3.1 mph | 5.7 mph |
| 3rd | 4.3 mph | 12.6 mph |
| 4th | 6.3 mph | 25.0 mph |
| 5th | 9.6 mph | - |
| 6th | 13.9 mph | - |
| 7th | 19.0 mph | - |
| 8th | 27.5 mph | - |
Tandem drive
| Oscillating welded box section | 1 ft. 8 in x 8 in |
| Side wall thickness: | |
| Inner | 0.87 in |
| Outer | 0.75 in |
| Wheel axle spacing | 5 ft. 0 in |
| Tandem oscillation | 13° reverse |
| Tank | 1.8 US gal |
Front axle
| Type | Solid bar construction welded steel sections |
| Ground clearance at pivot | 2 ft. 0 in |
| Wheel lean angle, right or left | 16° |
| Oscillation, total | 32° |
Rear axle
Alloy steel, heat treated, full floating axle with lock/unlock differential
Wheels, front and rear
| Bearings | Tapered roller |
| Tires | 17.5R25 |
| Tire rims (demountable) | 13 in one-piece rims |
Steering
Hydraulic power steering providing stopped engine steering meeting ISO 5010.
| Minimum turning radius | 24 ft. 3 in |
| Maximum steering range, right or left | 49° |
| Articulation, right or left | 25° |
Brakes
Service brake: Foot operated, sealed oil disc brakes, hydraulically actuated on four tandem wheels
Parking brake: Manually actuated, spring applied, hydraulically released caliper
Frame
| Front Frame Structure | |
| Height | 11.8 in |
| Width | 11.8 in |
| Upper, Lower. | 1.0 in |
Drawbar
A-shaped, u-section press formed and welded construction for maximum strength with a replaceable drawbar ball
| Drawbar frame | 8.3 x 0.87 in |
Circle
Single piece rolled ring forging. Six circle support shoes with replaceable wear surface. Circle teeth hardened on front 180° of circle.
| Diameter (outside) | 5 ft. 0 in |
| Circle reversing control hydraulic rotation | 360° |
Moldboard
Hydraulic power shift fabricated from high tensile steel. Includes replaceable metal wear inserts, cutting edge and end bits. Cutting edge and end bits are hardened.
| Dimensions | 14 ft. x 26 in x 0.87 in |
| Arc radius | 1 ft. 5 in |
| Cutting edge | 6 x 0.63 in |
| Replaceable/Reversible side edges | 6 ft. x 0.63 in x 1 ft. 6 in |
| Blade pull: | |
| Base GVW | 22,267 lbs. |
| With ripper GVW | 24,207 lbs. |
| Blade down pressure: | |
| Base GVW | 15,300 lbs. |
| With ripper GVW | 18,519 lbs. |
Blade range
| Moldboard side shift: | |
| Right | 2 ft. 8 in |
| Left | 2 ft. 8 in |
| Maximum shoulder reach outside rear tires (frame straight) | |
| Right | 6 ft. 7 in |
| Left | 6 ft. 7 in |
| Maximum lift above ground | 1 ft. 7 in |
| Maximum cutting depth | 2 ft. 0 in |
| Maximum blade angle, right or left | 90° |
| Blade tip angle | 40° forward, 5° backward |
Hydraulics
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 (at engine rated rpm) | 52.8 gpm |
| Standby pressure | 500 psi |
| Maximum system pressure | 3,000 psi |
Instruments
Electric monitoring system with diagnostics:
Gauges:
Standard - articulation, engine coolant temperature, fuel level, speed meter, transmission 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, ecology, P mode, fan reverse, rpm set, high beam, working lights
Capacities (refilling)
| Fuel tank | 103 US gal |
| Cooling system | 7.9 US gal |
| Crank case | 6.1 US gal |
| Transmission | 11.9 US gal |
| Final drive | 4.5 US gal |
| Tandem housing (each) | 15.1 US gal |
| Hydraulic system | 18.2 US gal |
| Circle reverse housing | 1.8 US gal |
Operating weight (approximate)
| Includes lubricants, coolant, full fuel tank | |
| Total | 37,346 lbs. |
| On rear wheels | 27,822 lbs. |
| On front wheels | 9,524 lbs. |
| With rear mounted ripper and front push plate: | |
| Total | 41,667 lbs. |
| On rear wheels | 30,468 lbs. |
| On front wheels | 11,177 lbs. |
| With mid-mounted scarifier: | |
| Total | 38,537 lbs. |
| On rear wheels | 27,778 lbs. |
| On front wheels | 10,737 lbs. |
Ripper
| Ripping depth, maximum | 1 ft. 5 in |
| Ripper shank holders | 5 |
| Ripper shank holder spacing | 1 ft. 9 in |
| Penetration force | 20,701 lbs. |
| Pryout force | 38,801 lbs. |
| Machine length increase, beam raised | 2 ft. 5 in |
Scarifier
| Middle, V-type: | |
| Working width | 4 ft. 8 in |
| Scarifying depth, maximum | 7.5 in |
| Scarifier shank holders | 11 |
| Scarifier shank holders spacing | 5.4 in |
| Rear: | |
| Working width | 7 ft. 2 in |
| Scarifying depth, maximum | 6.5 in |
| Scarifier shank holders | 9 |
| Scarifier shank holders spacing | 10.5 in |
Engine and its related items:
- Accelerator and electric throttle control
- Air cleaner, double element with dust indicator
- Air intake extension
- Antifreeze -22 F(-30C)
- Auto-idle Shutdown
- Hydraulic driven, reversing, cooling fan, blower type, plastic blade, with fan guard
- Engine, Komatsu SAA6D107E-3, 145 to 218 VHP EPA Tier 4 Final certified, turbocharged and air-air after cooled
- Fuel line pre-filter
- KDPF - After-Treatment Assembly Consisting of KDOC and KCSF
- Secondary Engine Shutdown Switch
- Selective Catalytic Reduction (SCR) System
Electrical system:
- Alarm, backup
- Alternator, 140 Ampere, (24V)
- Batteries, Extreme duty, 2 x 12V, 1146 cca each
- Battery, disconnect switch
- Dome light cab
- Headlights,(2) halogen type, front bar mounted
- Horn, electric
- Indicator lights:
- Battery charge
- Blade float
- Brake oil pressure
- Cooling fan reverse mod
- Differential lock
- Differential oil temperatur
- Dual power mode, economy and power
- Engine oil pressure
- Engine RPM set
- Lift arm lock
- Lights, high beam
- Parking break
- Transmission system electrical circuit - Lights, backup, stop, directional
- Starter 5.5kW
- Working light, front(4) and rear(2)
- Working light ,(4)cab mounted flood type
Operator environment:
- 12V (10A) power port
- Air conditioner (R134a) with heater
- AM/FM radio
- Cab: low profile with ROPS/FOPS Level II (SAE J1040, J2311)
- Console, adjustable with instrument panel monitoring system
- Electric defroster rear window
- Mirrors: interior cab, right and left exterior mirrors
- Electric defroster rear window
- Mirrors: interior cab, right and left exterior mirrors
- Multi-monitor with 7" LCD Display
- Rearview Camera and Monitor
- Sound suppression,74 Dba at operators ear with floor mat with tinted windows, front, rear and door intermittent wiper/washers
Power Train
- Dual mode transmission (8F-4R) power shift direct drive and torque converter with auto shift
- Axle, rear full floating, planetary type reduction
- Service brakes, fully hydraulic wet disc
- Parking brake, spring apply, hydraulic release dry disc
- Differential, manual lock/unlock
- Tires and rims: 17.5R25 radials on one-piece 13" rims (6)
Work Equipment and Hydraulics
- Blade accumulators
- Blade lift float, detent type, LH and RH
- Circle, drawbar mounted, 360° rotation with blade lift and circle side shift with anti-drift check valves
- Circle slip clutch
- Greaseless circle wear plates
- Hydraulic control valve, 10 valve section with control levers
- Hydraulic system, closed center, load sensing
- Steering, full hydraulic with tilt steering wheel plus leaning front wheels and frame articulation with anti-drift check valves
Other Standard Equipment
- Komtrax - Level 5
- Precleaner, Turbo II
- Provision for Grade Control, TOPCON
- Rear hitch
- Ripper, provision for battery cover and engine side covers
- Steps and handrails, right, left and rear
- Toolbox with lock
- Vandalism protection, lockable fuel tank, hydraulic tank
- Moldboard:
-- 12' x 26" x 0.87" with replaceable end bits
-- 6" x 0.63" throughhardened cutting edges and 5/8" hardware - Pusher plate (for use with rear mounted ripper/scarifier assembly)
- Rear-mounted ripper/scarifier assembly includes (3) shanks or (9) scarifier shanks can be inserted into the available slots
- Mid-mounted scarifier assembly (includes 11 shanks and replaceable points)
- Amber colored warning light
- 610 mm 2' LH/RH moldboard extensions
- Kit provision for a single function front attachment
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