DIO-Lancaster Farming, Saturday, June 19,1993
MOLINE, 111. John Deere
has expanded its 4-wheel-drive
tractor line with the introduction
of four 70 Series models to replace
the 3-model 60 Series introduced
in 1988.
The new line includes the
250-hp 8570, 300-hp 8770,
350-hp 8870, and 400-hp 8970.
This latest evolution of John
Deere 4-wheel-drive tractors fea
tures increased engine perfor
mance and several changes that
enhance operator comfort and
productivity.
The 70-Senes tractors, like the
14 new or revised tractor models
John Deere has introduced since
announcing its customer-driven
tractor strategy in the fall of ’9l,
are the product of extensive cus
tomer input.
“John Deere and competitive
4-wheel-drive tractor owners told
us they wanted more responsive
engine performance and conve
nient operation,” said Johnny
Dickinson, division manager of
4-wheel-drive tractor marketing at
the John Deere tractor factory in
Waterloo, la. “Farmers who have
run these new 70 Series tractors
are impressed with the pulling
power and responsiveness of the
engines. They like the new air sus
pension seat, the improved com
fort of the cab, the improved servi
ccability, and other design
changes we put into these new
tractors.”
The 7.6 L engine in the 8570
and the 10.1 L in the 8770 and
8870 feature the latest John Deere
engine technology, including the
company’s electronic engine con
trol. The Cummins 14 L ADVAN
TAGE™ engine in the 8970 fea
tures GENTRY™ electronic
engine control with Step Timing
Control (STC).
The electronic engine controls
on the 70 Series machines provide
several performance benefits. All
of the engines deliver full rated
powe over a 450 to 500 rpm range
for consistent power to pull
through the tough spots.
In addition, the 10.1 L and 14 L
engines provide up to a 7 percent
“power bulge” (5 percent in the
7.6 L) within the constant power
range. The power bulge is pro
duced automatically as the elec
tronic controller senses engine
load and responds with as much as
STRESS-FREE
ROW CROP GUIDANCE
iHG.
• Unique design keeps the implement • Eliminates excessive pull and stress
parallel with the rows even when on hydraulic components associated
the tractor moves laterally as it with other guidance systems
drifts off course Most other • Very few moving parts provide
systems oversteer the toolbar smooth, friction-free lateral
which adds damaging side pres- movement
sure to the stabilizing coulters • Works effectively on all conventional
• Automatically compensates for and ndge-till cultivators, planters and
sidehill drift 4-wheel drive articulated tractors.
CALL FOR DEALER LOCATED NEAREST YOU
539 Falling Spring Road
I P O, Box 219
I Chambersburg, PA 17201-0219
Phone 717-263 9111
Ryder supply
Deere Expands 4WD Tractor Line
13 to 28 extra horsepower above
rated power to handle the load.
The added power helps maintain
high productivity and reduces the
need to downshift.
The engines feature high torque
rise for good lugging ability and
quick recovery under load. Low
speed torque provides responsive
load-starting and maneuvering
performance.
An exclusive John Deere Field
Cruise Control feature works
much like cruise control on an
automobile. The operator can
adjust full-throttle engine speed
anywhere from, 2,100 to 1,300
rpm with a rotary knob on the shift
console. Any setting below 2,100
rpm triggers a constant-speed gov
ernor curve that provides instant
engine response as loads increase
and decrease to produce a ground
speed with little or no fluctuation.
Field Cruise, standard on all
four models, is particularly bene
ficial in work like seeding or
chemical application where con
stant ground speed is important.
Field Cruise also permits the oper
ator to match engine speed to the
load requirements for improved
fuel efficiency.
A new floor-mounted, push
bottom decelerator provides a
convenient way to reduce engine
speed at the end of a row. By step
ping on the bottom, the operator
can instantly reduce engine speed
to 1,500 rpm if Field Cruise is set
at the “rabbit” (highest speed) set
ting. If Field Cruise is set lower,
the decelerator immediately
reduces engine speed proportion
ally. When the operator releases
the button, engine speed instantly
begins returning to the Field
Cruise setting.
The electronic engine control
on the 8570, 8770, and 8870
adjusts fuel delivery to compen
sate for changing temperatures for
improved starting performance
and consistent power all day long.
On all models, electronic control
also provides a constant low-idle
speed regardless of load for
increased performance when man
euvering in close quarters and
starting loads.
On the 8970, STC automatical
ly advances engine timing for
easier starting and less start-up
smoke. Timing also advances at
low idle and with light loads for
improved fuel efficiency.
Directed cooling on the 10.1 L
engine in the 8870 helps ensure
long-term, reliable performance at
the 350-hp rating. This exclusive
feature circulates coolant around
the top flange of the wet cylinder
liners to lower liner and piston
ring temperatures for improved
wear characteristics. This,
together with the high-capacity
cooling system, helps maintain
appropriate operating tempera
tures for peak engine performance
and long life.
The 7.6 L and 10.1 L engines’
large intake and exhaust ports, pis
ton spray cooling, wet cylinder
liners, high efficiency turbochar
gers matched to engine power rat
ing, and air-to-air aftercooling
contribute to fuel efficient, reli
able performance. A viscous fan
drive adjusts to the cooling
requirements of the engine for
improved fuel efficiency.
The 14 L engine in the 8970
uses liquid-to-air aftercooling to
lower intake air temperature for
increased fuel efficiency and pow
er capability. It also features a vis
cous fan drive.
To meet a wider range of job
requirements, the 8870 can be
equipped with standard 100-mm
diameter axles or optional heavy
duty 110-mm-diameter axles that
are also used on the 8970.
An optional power differential
lock is available on all models for
improved traction in marginal
conditions and better side-draft
control and traction on sidehills. A
new control system enables the
operator to engage the lock with
one push on the floor-mounted
switch and disengage it by touch
ing the brake pedal or decelerator
button.
The Sound-Gard® body fea
tures improved air flow from the
air quality system to keep the
The CHARGE Advantage
P.L ROHRER & BRO., INC
The 250-HP John Deere 8570 Is one of four new 70 Sor
ters 4-wheel-drive tractors which also Include the 300-hp
8770, 350-hp 8870, and 400-hp 8970. The tractors feature
increased engine performance, enhanced operator com
fort, and improved ease of service.
operator comfortable. Environ
mentally friendly RI34A refriger
ant is used in the air conditioning
system. The new air suspension
scat provides both fore-and-aft
and side-to-side attenuation to
smooth out the ride. The seat
swivels 20 degrees left and right
and can be locked at 10- and
20-degree angles to suit the needs
of the job and operator preference.
Exclusive Ride Zone Protection
(RZP) prevents the operator from
overinflating or underinflating the
air suspension seat, thus ensuring
a comfortable ride. For added con
venience, RZP also retains the
height adjustment as the operator
leaves the seat. A storage drawer
under the seat provides a conve
nient place to keep tools and
supplies.
Additional sound adsorbing
material in the cab improves
sound quality for increased opera
tor comfort.
Serviceability improvements on
the 70 Series include a longer fuel
CHARGE Liquid Plant Food is a scientifically balanced NPK liquid foliar nutrient,
rich in phosphate and containing humus for increased uptake of nutrients.
The 3 Elements of CHARGE + an Added Benefit
/NITROGEN to promote fast growth and abundant foliage
/PHOSPHATE to encourage seed and root development
/POTASH which is essential for sugar and starch formation and to
increase size and quality of fruit
HUMUS, the added benefit for increased nutrient uptake
(dependent research Detergent Fiber. CHARGE has been shown to
ind growers alike have make a difference in the healthy growth of alfalfa,
ittested to the benefits especially during stressful conditions from
iRGE in increasing the weather and pests. CHARGE should be applied
iwerswhouseCHAßGE at 2to 4 qts. per acre after dormancy and after
ie to expect significant each cutting when the crop shows sto 6 inches
increases in protein level and decreases in Acid of growth. Get the CHARGE advantage!
Optimum time for apply- vest. CHARGE users have achieved bonus pay
ing CHARGE is at tuber ments for potato crops with more potatoes in the
initiation, followed by ap- desired premium size and for increased weight
ions at mid and late sea- and yield. Apply 2to 3 qts of CHARGE per acre
itions should be com- when plants are 4to 6 inches high. Get the
nd Potassium to achieve CHARGE advantagel
bulking and increase specific gravity before har-
filler neck that’s angled for easier
fueling from ground level, front
and rear engine hoods that open
independently for ease of service,
and a convenient sight glass for
the hydraulic reservoir to comple
ment the transmission reservoir
sight glass.
The 70 Series retains the proven
closed-center, pressure compen
sated hydraulic system used on the
60 Scries. Likewise, transmission
choices remain the same. The
12-speed Syncro™ transmission
with three reverse speeds is stan
dard. A 24-speed PowrSync™
transmission is optional. For the
lop three models, a 12-speed full
powershift transmission is also
available.
Some of the attachments avail
able as options include an inde
pendent 1,000 rpm pto, an elec
trohydraulic 3-pl. hitch with draft
sensing, dual lift cylinders, and
Quick-Coupler (for the 8570,
8770, and 8870). and a perfor
mance monitor.
• ALFALFA
• POTATOES
• TOBACCO
• VEGETABLE CROPS
Smoketown, PA
717-299-2571