672B
~.
6728 MOTORGRADER
iiI
~JOHN DEERilE
Model shown may include options
ENGINE PERFORMANCE
Nm lib-it
lOkQU
w 542 I 400
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0
II:
12 475 I 350
Iii
z 407 I 300
hp
--
.......
100'"
.....
POWER 'tI'
/'
......
lI'
Uh I gal/h
30
;;j 22.5
~
15
7.5
-
-
8
-
FU'i'LC9NSMPTION
FUL L
';;;J::"""'::;;'
I 'f 'I
1!i00
1900
2300
ENGINE SPEED-RPM
'Depending
120
90
100
75 Q.
t;;
6Oz
80
II:
w
ADD VERSATILITY WITH:
135 SAE net hp (101 kW)turbocharged John
Deere diesel engine
Scarifier
Rear-mounted ripper
28,100 to 35,541 lb. (12 746 to 16 121 kg)
operating weight with typical options and
special equipment
Snow plow and wing
Dozer blade
Choice of all-wheel drive systems: standard
system to 6.4 mph (10.3 km/h); optional
system to 10.9 mph (17.5 km/h)
Planetary power shift transmission; 8 speeds
forward, 4 reverse
Articulated frame steering
Power wet-disk brakes and differential lockunlock
4
1100
140104
60 45
6
2
kW
FEATURES
on operating variables
Hydraulic control of all blade and machine
functions-lockout valves prevent blade drift
blade float adds versatility
-
12-ft. (3.65 m) moldboard with 0.62 x 6 in. (16
x 152 mm) through-hardened Dura-Max@
cutting edge
7-position lift arms allow blade positioning for
90-degree bank cuts, left or right, in
approximately one minute
Cab or canopy with integral rollover protective
structure (ROPS)
New, fully adjustable control console and tilt
steering wheel
Dual level monitor system improves machine
protection
41
r
6728 MOTOR GRADER SPECIFICATIONS
Specifications and design subject to change without notice. Wherever applicable, specifications are in accordance with SAE Standards. Except where otherwise noted, these
specifications are based on a unit with 13.00-24, 8-PR, tubeless tires, 12-ft. (3.65 m) moldboard with 6-in. (152 mm) cutting edge, and standard equipment. Weights include lubricants,
coolants, full fuel tank and 175lb. (80 kg) operator.
Rated Power @ 2300 rpm:
Net
Gross
SAE
135hp(101 kW)
142hp(106kW)
DIN 70 020
101 kW
Net engine power is with standard equipment including air cleaner, exhaust system,
alternator, and cooling fan, at standard conditions per SAE J1349 and DIN 70 020, using
No. 2-D fuel @ 35 API gravity. No derating is required up to 10,000 feet (3050 m) altitude.
Gross power is without cooling fan.
Engine: John Deere 6414T
Type. . . . . . . . . . . . . . . . . . . . 4-stroke cycle, turbocharged diesel
Bore and stroke. . . . . . . . . . . . . . 4.19 x 5.00 in. (106.5 x 127 mm)
No. of cylinders
6
Displacement
414cu.in.(6.785L)
Compressionratio
16.2t01
Maximum net torque @ 1300 rpm . 400 Ib-ft (542 Nm) (55.3 kg-m)
Lubrication. . . . . . . . . . . . . . . . . Pressure system w/full-flow filter
Cooling fan
Suctiontype
Air cleaner w/restriction indicator. . . . . . . . . . . Dual element, dry
Electrical system. . . . . . . . . . . . . . . . . 24 volt w/42-amp alternator
Batteries (two 12 volt)
Reserve capacity: 180 minutes
Transmission.
. . . . . . . . . . . . . . . . . Direct drive, planetary power
shift with foot inching pedal
Travel Speeds: (2300 engine rpm, no tire slip)
Shift Lever Position
1
2
3
4
5
6
7
8
Forward
mph
km/h
2.2
3.5
3.2
5.1
4.9
7.9
6.4
10.3
8.4
13.5
10.9
17.5
14.2
22.9
24.4
39.3
Reverse
mph
km/h
2.9
4.7
4.1
6.6
6.3
10.1
8.2
13.2
Differential Lock: Foot-operated hydraulically actuated
Rear Drive: Inboard planetary final drives. Oscillating tandems
with 2-in. (51 mm) pitch roller chain in oil bath.
Front Drive. . . . . . . . . . . . . . . . . . Standard and optional systems
are available to match application. Both use a variable-displacement pump, reversible motor in each wheel, and flow divider to
assure front wheel traction. System has two operational modes
(normal and aggressive) and free-wheels at transport speeds or
when not in use.
Standard system-effective in
gears1-4
5.03in'(89cm')pump
2.03 in' (33 cm') motors
Front Axle: Fabricated steel box frame with steel spindles
Oscillation (total)
32deg.
Wheel lean (either direction)
20deg.
Steering:
Front wheels.
. . . . . . . . . . . . . . . . . . Full hydraulic power system
(Allows steering without engine power)
Frame articulation. . . Hydraulicallyactuated-25 deg. left or right
Minimum turning radius
22ft.6in.(6.86m)
Brakes:
Service. . . . . . . . . . . . . . . . Foot-operated, hydraulicallyactuated,
wet-disk, effective on 4 tandem wheels
Parking. . . . . . . . . . . . . . . . Hand-operated, mechanical, dry-disk,
effective on 4 tandem wheels
Hydraulic System: Closed center w/pressure co.ntrolled 4.0 in' (65
cm') variable-displacement pump 37.6 gpm (142 Umin) at 2300
engine rpm
Moldboard: Wear resistant high-carbon steel
Length
Height
Thickness
12ft.(3.65m)
24in.(610mm)
0.88in.(22mm)
Cutting Edge: Dura-Max through-hardened curved steel
Thickness and width. . . . . . . . . . . . . . . 0.62 x 6 in. (16 x 152 mm)
Blade Range:
Liftaboveground
Blade side shift:
42
19.0in.(483mm)
Right or left
26.9in.(683mm)
Shoulder reach outside wheels (frame straight):
Right
83.0in.(2.11 m)
Left
82.0in.(2.08m)
Pitch at ground line
44deg.forward
10 deg. back
Blade Lift Mechanism:
Control. . . . . . . . . . . . . . . . . Dual-lever,hydraulic w/float position
Lift Arms: Nodular cast iron
Positions
Control
7
Hydraulic,handoperated
Circle: Fabricated steel construction
Circle diameter
58in.(1.47m)
Rotation
360deg.
Drive. . . Hydraulic motor and worm gear w/positive position lock
Sideshift,right
27.0in.(686mm)
left
28.5in.(724mm)
Drawbar: Welded box section, 3.5 x 7 x 0.375 in. (89 x 178 x 9.5
mm) wall w/ball and socket draft connection
Main Frame: Welded box section from articulation joint to front axle
support
Width,minimum
12.07in.(306.5mm)
Height,minimum
10.63in.(270mm)
Thickness, sides
0.63in.(16mm)
top and bottom
1.00in.(25mm)
Weight per ft., minimum. . . . . . . . . . . . . . . . . 118 lb. (175.5 kg/m)
Minimum vertical section modulus. . . . . . . . . . . 117in' (1917cm')
Dimensions:
Tire
Size
13.00-24
8in.rim
(203 mm)
14.00-24
10 in. rim
(254 mm)
17.5-25
14 in. rim
(356 mm)
Wheel Tread
Front
Rear
76.15 in.
79.61 in.
(1.93m)
(2.02m)
Overall Width
Front
Rear
7ft. 9.5 in.
7 ft. 10 in.
(2.37m)
(2.39m)
Ground Clearance
76.15 in.
(1.93m)
79.61 in.
(2.02m)
7 ft. 11.5 in.
(2.43 m)
8 ft.
(2.44 m)
22.5 in.
(572 mm)
78.40 in.
(1.99m)
82.37 in.
(2.09m)
8 ft. 5 in.
(2.57m)
8 ft. 6 in.
(2.59 m)
23.2 in.
(589 mm)
(Front Axle)
22 in.
(559 mm)
U.S.
Capacities:
Fuel tank
,
,
,..,.70gal.
Cooling system ...,
,...,
7gal.
Engine lubrication, including filter. . . . . . . . . . . 20 qt.
Transmission and hydraulic system (refill)
14 gal.
Tandem housings (each)
5 gal.
Circlegearbox
3qt.
Liters
265.0
26.5
18.9
53
18.9
2.8
Scarifier: (Special Equipment)
V-type with three pitch positions (manual) and hydraulic float
Width of cut
4ft.(1.22m)
Number of teeth. . . . . . . . . . . . . . . . . . . . . . 5 standard, 9 optional
Liftaboveground
Maximumpenetration..
Shanksize
21.8in.(554mm)
... ..13.3in.(338mm)
,
,.1x3in.(25x76mm)
Ripper: (Special Equipment)
Parallelogram linkage
Width of cut
8ft.(2.44m)
Number of shanks. . . . . . . . . . . . . . . . . . . . 3 standard, 5 optional
Lift above ground
14.5in,(368mm)
Maximum penetration
14in.(356mm)
Shank size
2x5in.(51x127mm)
Additional
Standard
Equipment:
Articulation indicator
Dual-level monitor system
Two-level warnings:
Transmission temperature
Single-level warnings:
Air filter restricted
Engine coolant temperature
HFWD filter restricted
Lift arm lock disengaged
Low brake pressure
Low electrical voltage
Low engine oil pressure
Low HFWD charge pressure
Low transmission clutch pressure
Parking brake on (in gear)
Transmission filter restricted
Indicator only:
Differential lock engaged
Engine air precleaner
Front windshield wiper
Fuel gauge
Horn
Hourmeter
Lights, driving
Lights, stop and tail
Mirror, rear view, inside
Reverse warning alarm
ROPS cab, low profile
w/cushioned vinyl seat
and seat belt
Tow disconnect
Turn signals
[
]
6728 MOTOR GRADER SPECIFICATIONS
SAE Operating Weight
Standard equipment
Standard equipment
and scarifier
Standard equipment
scarifier and ripper
On Front
Wheels
8700 lb.
(3946 kg)
10.640 lb.
(4826 kg)
9910 lb.
(4495kg)
Optional or Special Equipment
On Rear
Wheels
19,400 lb.
(8800 kg)
19,190 lb.
(8704 kg)
22,420 lb.
(10 170 kg)
with Approximate
Total
28,100 lb.
(12746 kg)
29,830 lb.
(13531 kg)
32,330 lb.
(14665 kg)
Weights:
(Addthese weights to SAE standard equipment operating weight
to obtain total operating weights.)
.
lb.
kg
80
177
Air conditioner w/heavy-duty alternator
17
8
Alternator, 50 amp
23
50
Auxiliary function valve (rear mounted)
1490
676
Blade, front dozer
170
77
Bottom guard, general purpose
610
277
Bottom guard, heavy-duty w/rear hitch
37
82
Cab, full height w/ROPS
-226
-103
Canopy, low profile w/ROPS
1
3
Cold-weather starting aid
Control conversion (moves LH blade
0
0
control to RH side)
Dura-Max through-hardened
8.5 Ibltt (13 kg/m)
cutting edge, 3/4 x 8 in. (19 x 203 mm)
23
50
Engine side shields
2
4
Fan, defroster
8
4
Fan, dual defroster
Front wheel drive: high-speed system
effective
in gears 1-6;6.00 in' (98 em') pump,
34
15
2.03 in' (33 em') motors
0
0
Heater, coolant
16
7
Heater, cab, 20,000 Btu/hr (5.9 kW)
14
31
Heater, cab, 40,000 Btu/hr (11.7kW)
Heater, roof-mounted, 25,000 Btu/hr
8
17
(7.3 kW) (add to air conditioner)
Hydraulic pump, pressure controlled,
variable displacement, 6.00 in' (98 em')
50
23
54.8 gpm (207 LImin) @ 2300 engine rpm
4
2
Lights, 2 blade
5
12
Lights, work, 2 front/2 rear floods
4
9
Mat, floor
5
12
Mirrors, outside, rear view, convex, both sides
Moldboard w/through hardened Dura-Max
cutting edges:
12-ft (3.66 m) w/3/4 x 8 in. (19 x 203 mm)
48
106
cutting edge
13-ft. (3.96 m) w/5/8 x 6 in. (16 x 152 mm)
27
60
cutting edge
13-ft. (3.96 m) w/3/4 x 8 in. (19 x 203 mm)
116
53
cutting edge
14-ft. (4.27 m) w/5/8 x 6 in. (16 x 152 mm)
146
66
cutting edge
14-ft. (4.27 m) w/3/4 x 8 in. (19 x 203 mm)
70
155
cutting edge
Moldboard extensions, 2-ft. (610 mm), right
220
100
or left (less cutting edge)
62
28
Overlay end bits (1 pair), 6 in. (152 mm)
35
77
Overlay end bits (1 pair), 8 in. (203 mm)
67
30
Rear hitch
293
645
Rims for 17.5-25tires
Ripper, rear mounted with hitch and
1134
2500
3 shanks
Scarifier with five teeth,
1730
785
1 x 3 in. (25 x 76 mm)
1
3
Seat belt, 3-in. (76 mm)
90
41
Seat, deluxe suspension, cloth covered
90
41
Seat, deluxe suspension, vinyl covered
Tires:
13.00-24, 8 PR, G2
27
60
13.00-24, 12 PR, G2
194
88
14.00-24, 10 PR, G2
122
270
14.00-24, 12 PR, G2
528
239
17.50-25,12 PRoL2
5
11
Toolbox
1
3
Washer, front and rear windshield
272
600
Weight. front
2
5
Wiper, rear window
43
.,
6728 MOTOR GRADER DIMENSIONS
.E
E
en
.....
.....
9 ft. 1.3 in. (2.78 m)
0
ct-
ct.S
.!:
LO
o.ri
Q)
ci
.=
.=
0
.....
0
.....
Sft. 0.7 in. (1.S4m)
j---8ft.
Sin. (2.S7m)
-19 ft. 7 in. (S.97 m)27 ft. 3.2 in. (8.31 m)
29 ft. 7.S in. (9.03 m)
31 ft. 11.S in. (9.74 m)
.
Add 8.3 in. (210 mm) for full height cab
Add 1.0 in. (2S.4 mm) for cabs with air conditioning
44
-
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