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Komatsu Motor Grader Grader GD655-5
GD655-5
The GD655-5 has a unique dual mode automatic transmission. The operator can operate in direct drive mode for long pushes such as snow removal without ever having to declutch like all other graders. In the torque converter mode the operator has excellent low speed maneuverability and hydraulic control again, without having to declutch to prevent stalling the machine. Excavator style hydraulics, 900 left or right bank slope, two working modes and variable horsepower give the operator the tools he needs to do any job with precision and power.
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
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.
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
