John Deere 74 and 76 Dry and Liquid Fertilizer Units Operator’s Manual Instant Download (Publication No.OMB25042B)

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Y
C
D
OPERATORS MANUAL
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O M B 2 5 0 4 2 B
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TO THE PURC H A SER Your new John Deere
fertilizer unit is sturdy and dependable. It
will give long and efficient service if given
proper care and operation. This operator's manual
is provided to furnish information on the proper
operation, adjustment, maintenance, and
lubrication of your new fertilizer unit. A parts
list, with illustrations, is provided. When in
need of parts, see your John Deere dealer. He
will furnish genuine john Deere parts and prompt
and efficient service.
Study this manual carefully. Keep it handy,
in a safe place, for future reference.
Right-hand and left-hand reference is
determined, by standing at the rear of the
fertilizer unit and facing the direction of
travel. JOHN DEERE FERTILIZER UN IT MODEL 74
Dry . 74 Liquid
76 Liquid .... Date Purchased .
.....
3
CONTE NTS
IDENTIFICATION VIEWS . , SPECIFICATIONS OPERATION
. . Preparing the Tractor ... Attaching or
Detaching from Tractor . Leveling Attaching Bar .
... Setting Attaching Bar Height ... . Row
Spacing and Lateral Placement of Fertiliser .
. Setting Lateral Placement of Fertilizer . Row
Spacing . Setting Depth of Fertilizer Placement .
. Markers . Transporting . ... .
23 4 1g
7-8
9 10 11 11 13 I 213 12 13 \3-15 13 14 IS
16 16 17 1819 20-21 2231 22
Drive Chain for Dry Fertilizer Unit . Fertilizer
Disk Opener Pressure .... .. Covering Knives
... Dry Fertilizer . . . .... ...
Rate of Application .. ... . .. . Checking
Amount of Fertilizer Delivered . Liquid
Fertilizer . Tanks and Distributor Valves . Rate
of Application .. . Approximate Delivery Rates
... Double-Disk Fertilizer Openers . . Fertilizer
Packer Wheel . .
SAFET Y SUGGESTIONS .. . LUBRICATION . .
MAINTENANCE ASSEMBLY
Shipping Bundle List . ........... ...
4
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fi A T SCREW
TR
FERT ILINE
MAR KER CHAI N GATE
FERTI LIZER DR IVE GEARS
WARN NG LA MP BRACKET
FERT ILIZER OIS K
FERT I LIZER BOOT
FERT I LIZER
CARRIER FRAME WHEEL
6
IANK
ANK
VEN T TUBE
DISTR IBUTOP VALVE
SEDI MENT JAR
"FERTI LIZER DISK
FEPT ILtZER BOOT
CARR \ER WHEEL
7
SPECI FI CAT I ONS 74 Four Row Dry Fertilizer
Unit 74L Four Row Liquid Fertilizer Unit 76 Six
Row Dry Fertilizer Unit 76L Six Row Liquid
Fertilizer Unit Four-row20 to 40 inches,
inclusive six-row 20, 22, and (with
limitations) 24 inches. Hydraulic ter tilizer
feed automatically stops when unit is raised and
starte when unit is lowered. Dick type automatic
lift and selective manual drop.
TYPES .... .. .. .. . . ..
ROW SPACING . . . ...
LIFT ......... , . , , , ..
MARKERS . .
OPERATING SPEED Determined by the planting speed
of the 70 Flexi- Planter. Refer to the 70
Flexi-Planter Operator's Manual. CARRYING WHEELS
.. , ..... .... 15-inch wheels, 5.90 x 15 or 6.70
x 15 tires recom- mended. FERTILIZER OPENERS ....
, ...... Single or double disk openers are
available. Adjust- able to 6-inch depth and for
any point from directly below the seed to 3-1/2
inches to either side with adjustable
down-pressure spring. FERTILIZER COVERERS .
........ Blade type, with adjustable
down-pressure spring. DRY FERTILIZER DRIVE .....
... ...... Roller chain and gear train from
carrying wheels. DRY FERTILIZER
HOPPERS
Positive star feed, and approximately 100
pound capacity.
LIQUID FERTI LIZER TANKS . . .... 50-gallon
tanks with non-corroding, plastic feed tubes.
PLANTING ... . . . , ...
Four or six 70 Series FIexi-Planters mounted
on the frame.
8
OPERATE ON
LEVELING ATTACHING ' '
PREPARING THE TRACTOR The tractor must be
equipped with an 8-inch stroke hydraulic cylinder
that conforms to ASAE-SAE stand- ards. On
tractors with adjustable draw- bar, place the
dra'abar approximately 15 inches Trom the ground
and bolt it to the center of the tractor. If
possible, aeI the rear wheels of the tractor so
the ground wheels of the fertilizer unit will run
in the cen- ter of the tracks left by the
rear tractor wheels. If this cannot be done,
it is best to adjust the tractor wheels so the
fertilizer unit wheels run entirely out of the
rear tractor wheel tracks.
ATTACH ING BAR
To insure uniform planting depth and fertilizer
placement, the attach- ing bar must be parallel
to the ground when the fertilizer unit is in
the lowered position. To level the bar, place
the machine on a level surface and loosen bolt
A, adjust the wheel support linkage until the
bar is level, and retighten bolt A. SETTING THE
ATTACHING BAR HEIGHT There should be 18 inches
between the bottom of the Flexi-Planter at-
taching bar and the seed placement. For example,
if the seed is planted 2 inches deep, the bottom
of the at- taching bar should be 16 inches above
the ground. To obtain thiG setting, operate the
tractor remote cylinder control lever until the
attaching bar is at the proper height. Set
the hydraulic re- mote cylinder stop, which
controls the cylinder stroke, so the cylinder
will always lower the fertilizer unit to the
desired position.
ATTACHING TO OR DE-
TACHING FROht THE
TRACTOR Back the tractor to the fertilizer unit
so the hitch is straight in line with the tractor
drawbar. Attach the clevis to the tractor
drawbar and install the hydraulic remote
cylinder. The rerriote cylinder oil lines mufit
be connected to the tractor breakaway couplings
so when the control lever is pushed forward, the
unit is lowered. The bottom of the fertilizer
unit hitch must be parallel to the ground when in
working position.
CLE\/IS
To change the height of the hitch, move the
clevis up or down in holee A or B.
9
0 PERATI ON
ROW SPACING AND
the fertilizer unit. To place the fertilizer to
one side of the seed, move the Flexi-Planter
mounting cap toward the offset side of the
attaching frame. The distance the Flexi-Planter
mounting cap is moved from the original
1-3/4-inch setting will be the distance the
ferti- lizer will be placed to the side of the
seed. When all Flexi-Planters are set for lateral
fertilizer placement, tighten the U-bolts to
hold the Flexi-Planters in place. Do Not Move the
Flexi-Planters on Their Fertilizer Frames for
Row Adjustments. Move Each Planter aztd Ferti-
lizer Unit art the Carrier frame aa a Unit to
Obtaizz the Desired Row Spacing. ROW
SPACING Fertilizer support brackets are con-
structed with right- and left-hand offsets to
provide flexibility of adjust- ment. By placing
the units in differ- ent relationshtp with each
other and the carrying wheels, numerous row
spacings are available. The carrying wheels
can be at- tached to the carrier frame at
differ- ent locations up to a maximum wheel tread
of 88 inches. They should be centered between
rows when possi- ble however, when planting
24-inch rows, this is not possible. It is also
necessary to place the fertilizer at least 2
inches from the seed on the two rows infiide the
wheels, when planting 24-inch rows. The 74 and
74L Fertilizer Unit can be set for row spacings
from 20 to 40 inches, inclusive. The 76 and 76L
Fertilizer Unit can be set for row spacings of
20, 22, or 24 inchee.
LATERAL PLACEMENT
OF FERTILIZER Before setting the row spacing, set
the lateral relationship between the seed and the
fertilizer, as follows SETT ING LATERAL PLACE-
MENT OF FERTILIZER The fertilizer can be
placed di- rectly under or to one side of the
seed. The lateral distance between the seed and
the fertilizer can be varied from 0 to 3-1J2
inches depending upon the limitatione
encountered for different row spacings.
SIDE
FERTILIZER FRAME MOUNTING CAP
SPRAI GHT! SI DE
To place the fertilizer directly un- der the
seed, attach the Flexi-Planter mounting cap 1-3
J4 inches from the inside edge of the straight
side of the attaching bracket frame. When the
Flexi-Planter is placed in thie posi- tion, the
planter is directly behind
10
OPERATION
ROW SPACINGContinued To determine the exact
location of the units on the carrier frame for
various row spacings, start by finding the center
of the carrier frame. Draw a line diagram on a
level surface as shown below. A cement surface is
recommended so the dia- gram can be painted
permanently in place. The diagram must be drawn
accurately, with the row and the car- rier frame
center lines at right angles
to the row end lines. The distance from the
carrier frame center line to the inside row is
half the distance of the row width. The distance
to the next row is, of course, equal to the row
spacing. Move the fer tilizer units on the
carrier frame until the double disks on the
planting units are located directly over the
line indicating the desired row spacing. Lock
units and carrier wheel supports firmly in place
by tightening mounting clampe.
Y.'"'
(
11 -
18 '
i
20.
40
5643y 5ETTING FOUR-ROW S PACINGS
ROW IN ROWS INCHES
MCX IMUM SETTING IN INOHES BETWEEN SEED AND FERT
IL IZE R UNIT 1 UNIT 2 UNIT 3 UNIT 4 0 to 3 0
to 3 0 to 3 2 0 to 3
CAR RIER WHEEL TOCATION PosiBtion
4 20

• 4 22 0 to 1 0 to 31 0 to 31 0 to I
  PosiBtion Maximum
• 4 24 to 40 0 to 3 0 to 3 0 to 3 0 to
  3 Position A
• By interchanqing Units 1 and f a spacing oJ 1 to
  0 inches between seed and fertilizer can be
  obtained.
• F'or 10-inch rows, interchange Units 1 and (-,
  ihis will allow room Jor markers to be mounted
  on tke end of the square bar.

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O PERATI ON ROW SPACINGContinued SETHNG SI
X-ROW SPACI NGS
ROWS srRO G IN INCHES M AX IM U M SETTI N G I N INCH ES CAR RIER B ET WEEN SEE D AN D FER TI AZ ER WHEEL U IT 1 UN I T 2 UNIT 3 UN IT 4 UN I T 5 NIT 6 TOCAT ION M AX IM U M SETTI N G I N INCH ES CAR RIER B ET WEEN SEE D AN D FER TI AZ ER WHEEL U IT 1 UN I T 2 UNIT 3 UN IT 4 UN I T 5 NIT 6 TOCAT ION M AX IM U M SETTI N G I N INCH ES CAR RIER B ET WEEN SEE D AN D FER TI AZ ER WHEEL U IT 1 UN I T 2 UNIT 3 UN IT 4 UN I T 5 NIT 6 TOCAT ION M AX IM U M SETTI N G I N INCH ES CAR RIER B ET WEEN SEE D AN D FER TI AZ ER WHEEL U IT 1 UN I T 2 UNIT 3 UN IT 4 UN I T 5 NIT 6 TOCAT ION
6 20 2 only 2 only 0 to 2 0 to 2 2 only 2 only Center Be tween Units
6 22 1 to 3 1 to 3 0 to 3 0 to 3 to 3 1 to 3 Center Be tween Units
6 24 0 to 3 3 only 0 to 3 0 to 31 3 onl 0 to 31 Use Maxi mum P ossible
B inteiehanqing Units 1 and z, and Units 5 and
r, JettiliZ CT Ott be placed with or below the
seed. SETTING DEPTH OF FERTILIZER PLACEhtENT
FERTILIZER DISK
Sink ie D iah Opnrr Fer tilizer can be placed to
a depth of 6 inches. Desired depth can be set by
moving the boot shank up or down in the
clamp.
Tighten carriage bolts in clamp to hold the
boot in the desired locatton.
12
O PERATI ON
MARKERS IVIAR KER etPE
SCREW,
CHAI N
MARKER ROD
ADJUST I NG NUT
The markers can be adjusted for all row
spacings. The distance from the center of the
fertilizer unit to the mariner disk should
equal the number of rows being planted
multiplied by the row spacing. For example, if
planting six 22-inch rows, the distance from the
center of the fertilizer unit to the marker
disk should be six times 22, or 132 inchee. The
regular marker will adjust for row spacings of 20
to 40 inches. The optional offeet marker will
adjust for row spacings of 20, 22, 24, or 26
inches. To adjust the regular marker arm, loosen
the set screw. Move the marker arm to the
desired position and tighten the set screw. To
adjust the offset marker, loosen the U-bolt and
move the offset marker to the desired position
and tighten the U-bolt.
It is necessary to move the marker support and
clamp inward to obtain the correct setting w hen
planting 20- inch rows. When this is done, the
over-all length of the marker rod and pipe must
be shortened. Lt osen the set screw in each pipe
and relocate the marker rod in the marker pipe
and tighten set screws. Both eides must be
adjusted to the same length. The markers
automatically lift when the fertilizer unit is
raised. To lower the marker, pull the marker
rope. When the markers are raised, the chains on
each side of the spring pro- vide the first
lifting force and the spring completes the
lift, permitting the arms to latch gently. Adjust
the spring tension to lift the markers so they
will just latch when lifted. To decrease the
spring tension, looeen the nuts on the spring
rod. To increase the tension on the spring,
tighten the nuts.
13
10
0 PERATI ON
TRAt'l5PORTlblG CAUT ION Do not put lock pin in
top hole in lift arm during operation. This
wonId interfere with vertical flexibility and da
m- age t he machine. WARN ING LOCK PIN TRANSPORT
POSI TION To place the fertilizer unit in
trans- port position, extend the hydraulic
cylinder, raising all units, and install the lock
pin in the position shown. This will hold all
units in the raised position, relieving the
cylinder of the weight.
When transporting the Fertilizer Unit on a
public e road, keep as far to the right as
possible. Hang a red flag promi- ninently on the
rear of the Fertilizer Unit when transpor ting
during the day. At night, or during other periods
of low visibility, be sure the tractor lights are
operattng properly and use a warning lamp at the
extreme left- hand side of the fertilizer unit.
LOCK PIN
During operation, carry the trans- port lock pin
in the holes provided, as shown.
14
OPERATION
DitlVE CHAIN FOR DRY FERTILIZER UHIT
on the fertilizer disk opener may
be required. Down pressure on the fertilizer
disk opener can be changed by ad jutting the
spring assembly. To in- crease this pressure,
tighten the down pressure adjusting nut on the
eye- bolt to decrease pressure, loosen the nut.
Tighten lock nut when properly adjusted.
NOTE Down piesswe on the double disk
openers is ad justed in ltte same max eT.
COVERING KNIYES
ADJUST MENT?
Tension on the drive chain can be controlled by
moving the idler in the slot in the idler
mounting strap. Tighten nut on idler bolt when
de- sired tension is obtained.
UPPER SET COLLAR
FERTILIZER DISK OPENER
ZT
PRESSURE
. COLLA
DOWN PRESSURE SPRING
DOWN PRESSURE ADJUSTING NUT
! COVER I NG KN IFE
Move the rod up or down in the upper set collar
to change the carry- ing height of the covering
knife. Lock the upper set collar to hold the de-
sired setting. Move the lower set collar on the
adj usting rod to change the down pressure on
the knife. To increase pressure, move the collar
up to de- crease pressure, move it down. NOTE
Doc ble disk covering knifes are adjtfted in the
same manner.
When working tn rocky or traahy conditions, or
when placing ferttlizer below the seed, extra
down pressure
15
12
OPERATION
DRV FERTILIZER RATE OF APPLICAT ION A 14-tooth
sprocket is available
when ordered.
EED ATE
FEED GATE
Rate of dry fertilizer flow, from maximum to
minimum amounts, can be controlled by adjusting
the feed gate lever. By using different
combinations of driven sprockets and star wheels,
the quantity of fertimber applied can be set from
approximately 35 to I ,150 pounds per acre, as
shown in the chart below.
STAR FEE WH EEL
Two different star feed wheels are also
available. The chart illustrates the approxi-
mate volumes applied on three com- mon row
spacings only however, this volume increases
proportionately as the row spacing is decreased.
For ex- ample, using one combination shown below,
110 pounds per acre will be applied on 40-inch
rows and 380 pounds per acre will be applied on
20-inch rows. The amount applied on 30-inch rows
would be approximately 245 pounds per acre, which
is half- way between the amount applied on the
20- and 40-inch rows.
DTVEN SPROCKET
Two different driven sprockets are available for
use in the fertilizer unit. The regular driven
sprocket has 8 teeth.
DRIVEN SP ROC KET Row SPA CI NG I N I NCH ES STAR FEED WHEELS STAR FEED WHEELS STAR FEED WHEELS STAR FEED WHEELS
DRIVEN SP ROC KET Row SPA CI NG I N I NCH ES N4I 6D (SHO RTC (R EGULAR ON No. 7s)G N4I 6D (SHO RTC (R EGULAR ON No. 7s)G N4036D (LO NG) (RE ULAR ON No. 74) N4036D (LO NG) (RE ULAR ON No. 74)
DRIVEN SP ROC KET Row SPA CI NG I N I NCH ES M I Nf MU M POUN DS PE R ACR E M AX I MUM POUN DS PER AC R E M f N I MU M POU N DS PER AC R E MAX I MU M POU N DS PER AC RE
N 4525 D (8- Tooth) Reg. N 4526 D (14- Tooth) Extra N 4526 D (8- Tooth) Reg. N 4526 D (14- Tooth) Extra N 4S25 D (8 Tooth) Reg. N 4526 D (14- Tooth) Extra 20 20 28 28 40 40 1 75 70 125 S0 8S 35 770 4S0 550 320 380 225 380 2 25 275 160 190 110 1,150 660 825 475 580 330
16
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13
O PERATI ON
LIQUID FERTILIZER TANKS AND DISTR I BUTOR
VALVES VENT TUBE
CHECK I NG AMOUNT OF FER- TILE ZER
DELIVERED Because the dry tertilizer attach- ment
meters volume and not weight, the weight metered
out of certain types of fertiliser can vary a
great amount. To check the exact number of
pounds of fertilizer that will actually be
delivered for 40-inch row spacing, proceed as
follows Remove one spout from either fer-
tilizer hopper and attach a sack, or other
suitable container, under the opening in the
hopper. Engage the fertilizer unit and drive
forward for 130 feet. Weigh the amount of fer
tili- ver caught in the container arid multi- ply
that amount by 100. The result will be the
pounds of fertilizer de- livered per acre
when planting in 40-inch rows. NOTE Mr Itipip
the ireigñ/ oJ fee fertilizer caught in the
container bid 105 for 38- Inch Rows 111 for
36-Inch Rows 118 for 34-Inch Rows 1 25 for
32-Inch Rows 133 for 30- Inch Rows 143 for
28-Inch Rows 154 for 26-Inch Rows 167 for 24-Inch
Rows 182 for 22-Inch Rows 200 for 20 Inch
Rows Agricultural chemicals can be dangerous!
Improper se- lection or use can
injure persons, animals, plants, soils, or
other property. BE SAFE Select the right
chemical for the job. Han- dle and apply it with
care. Follow instructions of the chemical
manu- facturer.
LEVE L
VALVE CONTROL CHAI N AND SPPf NG
STE
CEO I MENT JAR DISTR I BUTOR VALVE
Fill the tanks with liquid fertilizer, and secure
the tank lids tightly to assure uniform deliver
y of tertilizer in the field. When the level of
the liquid reaches the top of the tank cradles,
the tanks are approximately one-fifth full and
should be refilled.
18
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available for immediate download. https//www.ebo
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