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FEATURES AND BENEFITS
Corn Heads
As the combine moves through the field, the corn head gatherer points are positioned between the corn
rows. The stalk rolls pull the cornstalks down so the deck plates will snap off the ears.
Trash knives prevent weeds and trash from wrapping around the stalk rolls. The gathering chains move
the ears up to the auger. The auger moves the ears to the front of the feeder house.
It costs time and money if the gatherer row components are worn or not properly maintained.
Worn gatherer row components may result in:
Stalk roll wrapping
Row unit plugging
Feeder house plugging
Ear loss
Pulling cornstalks out by the root
Kernel damage
Two critical parts that affect productivity on a corn head are the stalk rolls and gathering chains.
Stalk Roll
John Deere stalk rolls are attached only at the back.
There are no front hangers to snag weeds or stalks.
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FEATURES AND BENEFITS
Fluted Stalk Rolls (90 Series Corn Head)
The straight, fluted stalk rolls are standard
equipment on all 90 Series Corn Heads. The
fluted stalk rolls are designed with a more
aggressive stalk-stripping action for increased
feeding capacity in down or weedy crops. The
straight flutes provide a tighter working area
(outer edge of flute to body of adjacent stalk roll)
to produce a more aggressive feeding action. The
full-length flutes also provide a 55 percent longer
crop engagement area between the rolls to allow
for faster pull-through action. This means less
plugging in weeds. The ear-snapping zone of the
straight fluted stalk rolls is farther forward than
on tapered stalk rolls. Ears snap off sooner for
faster crop gatherer action.
The more aggressive action of the straight fluted
stalk rolls can provide up to 50 percent less trash
intake in high-moisture corn. There is less
breaking or tearing of stalks and leaves.
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All fluted stalk rolls are formed from nodular iron
and then placed in an automatic welding machine
that hard-faces the surface of the stalk roll flutes.
This ensures longer life for the stalk roll, season
after season.
On a new stalk roll, the flutes are straight. As the
flute becomes worn, it becomes concave at the
rear of the stalk roll.
This concave shape will not allow the roll to
aggressively pull the stalk downward and strip the
ear from the stalk. And, the sharp, square edges of
the flute become rounded as the stalk roll wears.
This results in less aggressive grabbing or pull
down of the stalk and will cause crop loss.
A stalk roll can be checked for wear by placing a
straight edge along the flute. If the difference
between the high and low point is greater than
1/8-in., the stalk roll should be replaced.
Rebuilt stalk rolls will not provide the same high
quality as new John Deere stalk rolls. Generally,
rebuilt stalk rolls will not have consistent,
uniform flute height.
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FEATURES AND BENEFITS
Stalk Roll (90 Series Head)
The knife stalk rolls for the 90 Series Corn Head
are designed to deliver improved field
performance.
The knife stalk rolls are a one-piece cast body
with two attaching halves. Worn blades can be
replaced without removal of the entire stalk roll
or the trash knives.
The John Deere knife stalk roll provides the
aggressive feeding action necessary when
harvesting high-yield corn. The knife stalk rolls
cut the stalks from the stubble and chop the crop
into average lengths of 10 to 16 inches.
Other brands of stalk rolls do not have the selfsharpening feature and hard-chrome plating. Both
sides of the flute are plated. The edges wear at
the same rate and tend to round off very quickly.
Once the edges start to round, the aggressiveness
of the flutes decreases. The 40 Series corn head
came standard with tapered, fluted, stock rolls.
The knife stalk rolls were designed for the 90
Series Corn Head but will retrofit to the 40 Series
Corn Head. New trash knives must be installed.
All flutes are hard-faced for long wear life.
The straight fluted stalk rolls are not
recommended for use on the 40 Series Corn
Heads.
Knife Stalk Rolls Cutting Action End View
John Deere knife stalk rolls are self-sharpening.
The tungsten carbide applied to the leading edge
of the knife wears at a slower rate than the heattreated trailing edge. The tungsten coating on the
face chips off and maintains a sharp edge as the
trailing edge wears. All blades are heat-treated for
long wear life.
Knife Stalk Roll Kit
Part number: AH227072
Application: 40 and 90 Series Corn Heads
Value: Complete stalk row repair kit that includes
components to rebuild one row.
Knives have tungsten carbide coating for longer
wear life. Knife rolls size stalks to enable faster
residue breakdown and promote earlier soil
warm-up.
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FEATURES AND BENEFITS
Gatherer Chain
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Gatherer Chain Paddles
Efficient corn harvesting depends on the strength
and capacity of the corn head gatherer chain. The
gatherer chain acts as a conveyor system to move
the ears into the auger. Embossments in the
sidebars and the flight lugs of the chain protect
the connecting pinheads. Without these raised
areas, the connecting pinheads would be exposed
to excessive wear, resulting in premature chain
failure.
The face of each flight is extended down to create
a lip between the sidebars. The lip prevents debris
from collecting at the roller, and reduces drag and
wear to the chain and sprockets. The flight face
slants at a 15-degree angle away from the roller
chain. This slight angle creates a self-cleaning
effect as the flight moves the ears toward the
auger. Every element of the chainpins, bushings,
flights, roller, and sidebarsis heat-treated for
strength and long life. Special lubricant penetrates
each unit of the gatherer chain, reducing friction
wear and providing smooth operation.
The gatherer chain is available with chromed
pins. The chromed pins increase the wear life of
the chain by 50 percent. Gatherer chain with
chromed pins is standard equipment on the 90
Series Corn Head, and will retrofit to the 40
Series Corn Head.
Gatherer chains are considered worn if they have
reached the point where no adjustment can be
made to tighten the chain.
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In extreme high-trash conditions, should material
build-up be encountered, it is recommended that
the gathering chain paddles be installed. The
bundle contains paddles for installing on the
gathering chain of the center two row units and
provides more surface area to the gathering chain
lugs to improve their conveying capacity in high
trash harvesting conditions.
The gathering chain paddles can also be used on
all prior corn heads to help relieve the material
build-up in the center row units that can occur in
very dry, high-trash harvesting conditions.
Note: Gathering chain paddles are a wear item.
Wear life will generally last only one season. The
actual wear life will depend on the crop
condition, yield, and amount of acreage
harvested. The gathering chain paddles are not a
warranty item.
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FEATURES AND BENEFITS
Hydraulically Adjustable Deck Plates
40 Series Corn Head row-unit head
Customers who want hydraulically adjustable
deck plates on their 40 Series Corn Heads now
have that option.
In base equipment on all 12-row and 8-row corn
heads, optional on 6-row heads. Allows the
operator to adjust deck plate opening, on the go,
to match changes in cob size and stalk conditions.
Reduces ear loss and shelling due to
misadjusted deck plate spacing
A conversion kit allows you to order a hydraulic
deck plate bundle for 90 Series Corn Heads and
retrofit it to a 40 Series Corn Head.
The conversion kit contains a template (A), center
punch (B), and installation instructions.
Note: When ordering parts for hydraulic deck
plate conversion, select the bundle for the 90
Series Corn Head that corresponds to the
customers 40 Series Corn Head model. Then
order parts below for each row-unit.
Applications
Note: Combine must be equipped with reel
fore/aft hydraulic adjustment option in order to
operate hydraulic deck plates.
The hydraulic deck plate indicator is located in
the VisionTrak display of the ComandTouch
cornerpost.
Permits operators to easily view where
the deck plates are positioned within the
range of adjustment
A mechanical indicator is available as a
field installed attachment for use with 10
Series and 9000 Series Combines
Note: For use on combines equipped with foreand-aft reel adjustment option only.
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FEATURES AND BENEFITS
Header Equipment
Perma-GlideTM Points (40 Series Corn Heads)
Trash Knife Kit
Customers can replace the dented, rusted, or
worn-out steel fenders and points on their 40
Series Corn Head with Perma-Glide polyethylene
replacement parts.
Perma-Glide points cost approximately 25
percent less than steel and weigh 30 percent less.
Trash Knife Kit
The points, center covers, and fenders are made
of roto-molded, green polyethylene with a
hollow-body structure. They wont rust and never
need painting.
Part numbers:
AH211791 for tapered stalk rolls
AH211792 for straight-fluted or knife stalk
rolls
Application: 40 and 90 Series Corn Heads
Prevent grass and other trash from wrapping on
the stalk rolls. Kits include right- and left-hand
trash knives packaged in a convenient kit, and
priced up to 27 percent less than purchasing the
parts individually. Each kit includes hardware for
both 40 and 90 Series Corn Heads and
instructions.
Corn Head Row-Unit Slip Clutch
The smooth, low profile improves feeding of
down or lodged stalks. Poly points dampen ear
bounce and reduce potential ear loss.
Perma-Glide points fit better and are easier to
adjust than competitors poly points. Remove a
single lock pin and lift the center cover for easy
service.
Corn Head Row-Unit Slip Clutch
Part number: AH146250
Application: 40 and 90 Series Corn Heads
Provides ultimate protection in the most
demanding conditions with the corn head row
unit slip clutch. This pre-assembled slip clutch
reduces repair time, and costs up to 38 percent
less than purchasing the individual parts.
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Perma-Glide fenders replace early model high
tin or later model low tin fenders.
Header Equipment
The shoe on the Perma-Glide point has a smaller,
smoother profile than competitive shoes. This
cast-iron shoe also adds just enough weight to
keep the point from riding over heavy, thick
weeds. Competitive shoes are plastic and
therefore weigh less and may allow the point to
ride over weeds.
FEATURES AND BENEFITS
Additional parts required for left-hand fenders.
Part
number
E50102
E55662
H137827
H101253
H102750
H102751
H109940
H113237
H93011
N10214
03H1500
03H1550
24H1308
Installation of the points is simple and easy. All
required mounting brackets and hardware are
provided except for high-tin fenders, up to PIN
38060.
Part
number
AH159908
AH159909
AH166222
AH166221
AH159910
AH159911
AH159912
Description
3/8-in. locknut
3/8-in. nut
bracket, left-hand
angle
strap
strap
hinge, right-hand
hinge
brace, left-hand
3/8 x 1-in. cap screw
3/8 x 1-in.
3/8 x 1-1/4-in. GGE
washer
Qty.
1
3
1
1
1
1
1
2
1
1
2
1
3
To prevent possible injury due
to entanglement in exposed
drives, DO NOT install PermaGlide fender assemblies on 243,
244, 343, or 344 Corn Heads. Outer sheet
metal skirts (wheel shields) providing drive
protection on the right-hand end of these
machines will not attach to the Perma-Glide
fenders.
Description
Center point (28- and 30-in. rows)
Center deck (28- and 38-in. rows)
Center point (36- and 38-in. rows)
Center deck (36- and 38-in. rows)
Right-hand fender
Left-hand fender
Outer point
Reflective Shoe Cover
For those 40 Series Corn Heads, up to PIN
380600, additional parts will be required for the
right-hand and left-hand fenders. See below.
Additional parts required for right-hand fenders.
Part
number
Description
Qty.
E50102
3/8-in. locknut
1
E55662
3/8-in. nut
3
H100530
bracket, right-hand
1
H101253
angle
1
H102750
strap
1
H102751
strap
1
H109940
hinge, right-hand
1
H113237
hinge
2
H93010
brace, right-hand
1
N10214
3/8 x 1-in. cap screw
1
03H1500
3/8 x 1-in.
2
03H1550
3/8 x 1-1/4-in. GGE
1
24H1308
washer
3
John Deere has improved the composite shoe
cover with an embedded reflective strip in the top
of the cover, and simplified the installation to just
snap on over the existing cast point, eliminating
the need to remove the bolt.
Bright yellow color and reflective strip
added in the middle of the shoe provide
better visibility in down corn, narrow
rows, and during nighttime harvesting
Help the operator keep close tabs on the
level of the corn head
Designed to create a smooth surface to
prevent bunching of trash in damp or
down corn conditions
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FEATURES AND BENEFITS
Additional value to your customer
with this updated design run
longer with less fatigue. Reduced
fatigue is a value you can sell,
especially to your older customers.
No tools are necessary to install
the covers just snap them on
over the cast shoes
Manage Corn Stalk Residue with StalkMaster
StalkMaster, an integrated corn stalk chopper for
893 and 1291 Corn Heads, helps to reduce
residue management costs, improve residue
degradation, and improve next crop tillage or
seeding performance. StalkMaster chops the
stalks behind the row units and eliminates any
need for second-pass chopping operations, saving
fuel, labor, and additional tractor operation costs.
IMPORTANT: StalkMaster requires more power
than non-chopping corn heads; therefore it is
recommended to use with the high-torque
variable speed or high-torque fixed speed drive.
Additionally, power requirements of the new
StalkMaster will result in slower ground speeds
compared to non-chopping corn heads if
operating at power limit.
StalkMaster features:
Under each row is a robust gearbox unit,
each with two rotary chopper knives
rotating perpendicularly to the corn stalks
Chopper speed changes with the variable
speed feeder house drive, ranging from
2,200 rpm to 3,045 rpm
For versatility, StalkMaster knives can be
easily removed if chopping is not desired
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