John Deere 66 Series Drawn Moldboard Plows Operator’s Manual Instant Download (Publication No.OMA51159)

1
Y
C
D
OPERATORS MANUAL
K 9
O M A 5 1 1 5 9
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YOUR NEW PLOW Behind your new plow is an or-
ganization that has specialized in de- signing
and building plows for over one hundred and
twenty years. This plow was built in the world's
largest plow factory by experienced men, many
who have worked in this large plant for from ten
to for ty-five years, thus assuring the utmost in
good de- sign, high-grade workmanship and
thorough inspection, so essential to the
production of good plows.
High quality materials, precision production
methods, and accurately controlled heat-treating
assure maxi- mum stren8th and long life for every
part.
Occasionally your plow may need new parts, or
require service not covered in this manual.
If so, we suggest that you take ad vantage of
the facilities offered by y J hn Deere
dealer, which assure you of genuine JOHN
DEERE Parts and prompt lcnow-how service in
the field or shop.
This manual has been carefully prepared and
illustrated, so that you may make the necessary
adjustments for adapting your plow to work
properly in practically all types of soil
and field conditions. These ad- justments such
as proper hitching and adjusting for width and
depth of cut, are fully covered in this
manual. Study this manual carefully. Keep it
handy, in a safe place, for future reference.
If you will furnish your dealer with the
information which should be re- corded at the
bottom of this page, when the plow is delivered,
he can give you prompt and efficient service.
JOHN DEERE 66 SERIES MOLDBOARD PLOWS 66AQ 66H
Q 66A Rice Q
66H SpeQcial 66H Rices . . . . . . . . . . . . .
. 19.
Date Purchased . .
(7'o be Jil led in by PtlTchaser)
3
1
CONTENTS
fore 2-4 5-7 ..... 8-31 .. 8 8 910
IDENTIFICATION VIEWS SPECIFICATIONS OPERATING AND
ADJUSTING..... Importance of Proper
Adjustment.... Preparing the Plow..
...... .......
....
Preparing and Adjusting Tractor .
............ Hitching Plow to Tractor
............... Plow Hitching Chart...............
....
... ...... 10-12 . 13
Types of Hitches ............................................ 1416
Clutch Release. . 16
Hydraulic Control ....... 17
Mechanical Control.. . . ....... 18
Leveling. . .. ......... .. ... . ............... 18
Depth of flowing ..................... . . ............. . 19
Rear Axle and Wheel ........... .............. 2021
Rear Wheel Lift Rod......... . 21
Lifting Springs .................... 2 2
Rolling Coulters ...... .... 2324
Jointers. . 25
Landing Lever..... 26
Moldboard Pad.... ............... . .... 26
Weed Hook. 27
Root Cutter. . .... 27
Gauge Wheel.... ..... . 28
Transporting. . 28
Safety Suggestions. 28
Reducing Five-Bottom 66 or 66H Plow to a Four-Bottom Plow. . . 2 9
Procedure for Field Adjusting Plow ... ........... ............. 3031
MAINTENANCE SUGGESTIONS 3235
LUBRICATING INSTRUCTIONS 36
PLOWING DIFFICULTIES AND REMEDIES 37-40
ASSEMBLY INSTRUCTIONS. 45-64
SHIPPING BUNDLES
4
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D E PTH A DJ USTt NG LEV E R
RI NG
LAN D AX LE S HA N K FRA M E BAR
BAO LS
LIFT BAR
LEVELI NL LEVER
H ïTCH C ROSS BAR LAND WH EEL
LA N USI G E H EEL.
Jo ft u Dee re 68 A Fo u r-Bo the rn lilo Idboard
Pm in
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SPECIFICATIONS A ND DATA

• TYPES
• The 66A and 66H Tractor-drawn Plows are
  furnished in the following types and sizes
• Bottom14 Inch or 16 Inch Plow
• Bottom14 Inch or 16- Inch Plow (Reducible to
  3-Bottom)
• 5-Bottom14- Inch or 16- Inch Plow (Reducible to
  4-Bottom) 4-Bottom 14 -Inch or 16 I ncla Rice
  Plow (Not Reducible)
• 3-Bottoml4-Inch or 16- Inch Special (Not
  Reducible)
• DEPTH RANGE
• Approximately 3 to 10 inches.
• BOTTOMS
• As ordered. Various types and sizes available.
• FURROW WHEELS
• 66A or 66H Plow3 - and 4-Bottom
• Wheel without 5.90 x 15 Tire and Tube, Hegular
• Wheel with 5.90 x 15 Tire and Tube, Special
  Steel, Special
• 66A or 66H PlowS -Bottom
• Wheel without 5.90 x 15 Tire and Tube, Regular
• Wheel with 5. 90 x 15 Tire and Tube, Special
  Steel, Special
• 66A or 66H Rice Plow
• Wheel without 7.60 x 1 5 Tire and Tube, Regular
  Wheel with 7.60 x 15 Tire and Tube, Special

9
6 SPECIFICATIONS AND DATAContinued REAR
WHEELS b6A Plow Wheel with 4.00 x 12 Tire and
Tube, Regular Whcel without 4. 00 x 12 Tire and
Tube, Special Steel, Special Cast, Special 66H
Plow- Wheel with 4. 00 x 1 2 Tire and Tube,
Regular Wheel without 4.00 x 12 Tire and Tube,
Special Steel, Special Cast, Special 66A or 66H
Rice Plow Wheel with 4.00 x 1 2 Tire and Tube,
Regular Wheel without 4. 00 x 12 Tire and Tube,
Special Steel, Special Cast, Special 66H Special
Plow Wheel with 4.00 x 1 2 Tire and Tube,
Regular Wheel without 4. 00 x 12 Tife and Tube,
Special Steel, Special GAUGE WHEELS 3 1/4 x 19
Steel- - Available when Ordered, HITCHES 66A and
66H 3- and 4-Bottom
C
usliion Spring Release, Regular
Cushion Spring ReleaseFor Trac k-Type Tractor,
Special Cushion, Special CushionFor Track Type
Tractor, Special 66A and 66H 5-Bottom, and 66A
and 66H 4-Bottom Rice Plow Cushion Spring
Release For Track-Type Tractor, Regular
Cushion, Special Cushion For Track-Type
Tractor, Special 66H-3-Bottom, Special Cushion
Spring Release, Regular Cushion,
Special LIFT Enclosed-type clutch for 66A and 66A
Rice Plows. Hydraulic remote cylinder for 66H,
66H Rice, and 6SH Special Plows.
10
SPECIFICATIONS AND DATAContinued LEVERS Adjustabl
e for length. COULTERS 66A and 66H P1ows1 7
Inch, Regular l5- Inch Plain, Special 17-Inch
Notched, Special 18- Inch Plain, Special. 66A
and 66H Rice P1ows18- Inch Plain, Regular 17-
Inch Plain, Special 17- Inch Notched,
Special. 66H Special PlowIS - or 18- Inch Plain,
Special 17- Inch Plain, Regular 17- Inch
Notched, Special 15-, 17-, or 18- Inch Plain
with Flat Shank, Special 17- Inch Notched with
Flat Shank, Special. JO INTERS Independent,
Steel, Special Independent, Cast, Special
Combination, Steel, Special Combination, Cast,
Special HITCH CLEVIS COUPLER Available as
special equipment for use with tractors with
forked-type drawbars. ROOT CUTTERS Available as
special equipment. MOLDBOARD PADS Available as
special equipment. WEED HOOKS Available as
special equipment. GAUGE WHEEL AvailabIe as
special equipment on the 66A, 66H, and 66H
Special. NOTE When the terms right or
leJt are used, it menus yoftt It
pOSiti0n behixd the plots and /aciag the Jront.
11
OPERATION IMPORTANCE OF PROPER ADJUSThtENT
Your new plow is fully adjustable and, when
properly adjusted to oper- ate in the type of
soil and field condi- tions on your farm, it will
do a good job of plowing at a minimurn of ex-
pense. A well adjusted plow pulls lighter
its furrow slices are uniform
in width and depth it covers trash it leaves
the soil in proper condition to be worked down
into the best type seed bed. I mproper
adjustment results in rapid wear and possible
breakage of parts, and inefficient operation.
PREPARIN2 THE PLOW BOLTS AND SET SCREWS
PLOW BOTTOMS
The polished surfaces of the plow bottoms have
been painted with pro- tective black paint. In
most cases it is not necessary to remove the
black paint because it will wear off quick ly
upon contact with the soil. In those soils
where the black paint will not wear off,
remove with gasoline, kerosene, or diesel
fuel. Be earef ul when usi rig any of these f
ueIs so the'y do not ignite. PIow shoul d be in a
well-ventil ated area and aw ay from any sparks
or flames. If the plow is not to be used im-
mediately, protect the polished sur- faces by
applying a coat of cup or gun grease. If plow
is to be put in storage for a considerable
length of time, see page 32. Check plow tires to
be sure they are inflated properly as shown below
Re co m rrie rided New I rnp ie me n t or N ew
I n flat ion
Before starting to work with a new plow or one
which has been stored, check to see that all
bolts and set screws are tight and all cotter
pins spread to keep them from falling out. Check
the bolts tha t hold the plow bottoms to see that
they are d rawn up very tight.
A'good practice is to check for loose bolts,
screws, or parts when lu- bricating the plow.
Loose bolts are easily lost or cause excessive
wear on parts, rexulting in possible serious
damage to the plow. LUBRICATION Be sure plow
has been properly lubricated. See Lubrication Ch
art on page 36.
Wbeel Paxrow Land Land Rear
or Used Aut.o Ti res P re ss ur e
5.90 x 15-4-Ply 7.60 x 15-4-Ply 7.50 x
18-4-Ply 4.00 x 12-4-Ply
28 Lbs. 24 Lbs. 24 Lbs. 36 Lbs.
12
O PERAT ION PREPARING AND ADJUSTING TRACTOR
REAR WHEEL WEIGHT ING In average conditions,
rear wheel weights are not necessary. In those
conditions where it becomes neces- sary to add
weight to the rear wheels, see your tractor
Operator's Manual for weighting
instructions. Power can be lost and tire life cut
drastically by wheel slippage. Add- ing weight
also serves to stabilize the tractor when ploy
ing in rough or hillside fields. LIQUID
WEIGHT Water and calcium chloride solu- tion is
an economical means of add- ing weight to rear
wheels equipped with rubber tires. Calcium
chloride solution is recommended rather than
plain water as it will not freeze.
For complete tractor operating in-
structions, refer to your tractor Ope
ator's Manual.
TI RE I NFLAT ION Inflate the tractor tires as
recom- mended in the tractor Operator's
Manual. For plowing, add 4 pounds more air in
right rear tire than in left rear tire. Proper
air pressure is the most important factor in
satisfactory per- formance and maintenance of
trac- tor and implement tires. Underin-
flation will damage the cord body of the tire and
cause a series of radial breaks in the sidewall
fabric. This may occur on the inner sidewall of
the furrow wheel tire. If the tire buckles
or wrinkles, the air pressure should be
increased to where the side walls remain
smooth while oper- ating. If additional
traction is required, add weight to the wheels.
Lowering the air pressure will make little dif-
ference in the traction and may ruin the tires.
CAST-1RON WEI GHTS Where weight in addition
to or in place of liquid weight is required,
cast-iron weights can be bolted to the rear
wheels. This type of weight can be secured from
your John Deere dealer.
Check air pressures every two or three weeks. Use
a special low pres- sure gauge having 1-pound
gradua- tions.
13
io
O PE RAT I O N
TRACTOR DRAWBAR On wheel-type tractors set
the tractor drawbar in the short hi gh pos
ition and, exce pt where off- hitching is
required, bolt it exactly ir the center of
tractor, midway be- tween rear wheels. On
track type tractors that work with both tracks
on the land the tractor drawbar should
ordinarily be free to swing.
REAR WHEEL SETT ING Tractor rear wheel settings
are de- ter mined by the location of the cen- ter
line of draft in the plow. There - fore, it is
necessary to first read Hitching Plow to
Tractor on the folio wing pages. Then adj ust
the wheels as explained on page 11. FRONT WHEEL
5ETTI NGS On wi de -front -end tra cto rs set
front wheels to conform to rear wheel setting,
center-to-center of tread.
HITCHING PLOW TO TRACTOR
Ru Ie The center line of draft of a moldboard
plow is located at a point one-fourth of the
cutting width of one bottom measured to the left
of the center of total cut of the plow. (This
rule applies to all plows whether one-, two-,
three-, four-, five-, or six bottom.) Example
Finding center line of draft of a five-bottom
14-inch plow Total cut of plow 70
inches. Center of cut or one-half of 70
inches 35 inches. One-fourth the cutting
width of one-bottom 3-1/2 inches. 3-1/2 inches
addeo to center of cut, which is 35 inches
38-1/2 inches. Therefore, the center line of
draft of a five-bottom 14-inch plow is 38-1
/2 inches measured to the left and at right
angles from the furrow wall. See tllustration
below.
The ideal hitch is a straight line from the
center point of pull on the tractor to the center
point of resist- ance on the plow, both
horizontally and vertically. The center point of
pull on the tractor is located approximately
3 inches ahead of the rear axle hous- ing and
midwa y between the rear wheels. To find the
center point of resist- ance on the plow, first
find the center line of draft as explained
below. CENTER LINE OF DRAFT The center line of
draft is simply an imaginary line drawn from
the point of pull on the tractor to the point
of resistance on the plow. The center line of
draft of the plow can be located by using
the followtng rule
CENTER LIN E OF DRAFT HITCH DRAWBAR
POINT OF RESISTANCE
14
O PERATI ON
CENTER POINT OF RESISTANCE The center point of
resistance on a plow is located on the bottom
inter- sected by the line of draft, at a point
approximately one-half of the plow- ing depth
from the bottom of the furrow. When plowing 6
inches deep, the point of resistance will be 3
inches up from the furrow bottom, or ap-
proximately at the junction of the share and
moldboard. If plowing deeper than 6 inches,
this point will be located farther up on the
mold- board. If plowing shallower than 6
inches, the point of resistance will be farther
down on the share. ADJUSTING TRACTOR WHEEL TREAD
wheel spacing is necessary, always set the left f
ear tractor wheel at the recommend ed position
and move the right rear wheel out. This will
result in more nearly equalizing the weight on
the two rear wheels of the tractor when plowing.
Then center the tractor drawbar between the rear
wheels.
HORIZONTAL HITCH ADJUSTMENTS CEN PER LI NE OF
DRAFT
D IAGONAL BRAKE
g, CROSSBAR
uiTCH DRAWBAR
Adjust the plow hitch so it will be on the exact
line of draft from the center point of pull on
the tractor to the center point of resistance on
the plow. A series of holes in the hitch crossbar
allow the hitch to be bolted on the center line
of draft. See il- lustration above and on page 1
0. Adjust the diagonal brace on the hitch so the
plow hitch is parallel to the furrow wall. After
the plow is in the field, further adjustment
of the diagonal brace may be necessary to get the
correct cut on the front bottom. After the
tractor wheels and plow hitch have been set
correctly, attach the plow hitch to the tractor
draw- bar. OR-Hitching In some cases, surh as
with fixed- tread tractors, it is impossible to
set the tractor wheels so the draw bar will fall
on the center line of draft. In such cases, it
is necessary to off- hitch the plow and to move
the draw- bar of the tractor away from the
center point of pull to permit the
After the center line of draft and point of
resistance of the plow have been located, set the
tractor wheels fon adjustable tread tractors) to
the proper position so the pulling force will be
on a straight line from the point of pull on
the tractor back through to the point of
resistance on the plow. Since, in the example
on page 10, the point of resistance is 38 1/2
inches from the furrow wall, set the tractor
wheels so the center of the drawbar is 38-1/2
inches from the inside of each tire. When plowing
on steep hillsides, it is sometimes necessary,
with adjust- able tread tractors, to use a wider
wheel spacing than recommended for stability
reasons. Where a wider
15
12
O PERATI ON
CENTER LI NE OF DRAFT
TRAGTOR DRAWBAR MOVED 8 INCHES TO LEFT OF
CENTER HITCH DRAWBAR
POINT OF RES ISTANGE
PLOW HITCH OFF-H ITGHE.D 7-1 2 INCHES
2
Ho r iyan ta I Mitch Ad j its t ruen ts on f'ime
- Be I to or 14-Inch Plc w Use d ith iz0 n d
i20 S an dand Trac too
Off-Hitc hingContinued plow hitch to be parallel
to the fur- row wall. For example, when using
a five- bottom 14 inch plow with a 720 or
730 Standard Tractor, the cen- ter line of draft
is 38-1 2 inches from the fufrow wall while the
wheel tread on the tractor is 46 inches from in-
side to inside of tires or 23 inches frorri
inside of tires to center of the drawbar when the
drawbar is bolted in center of tractor. The
difference between 38-1 2 inches and 23 inches,
of course, is 15-1 /2 inches. pinCe ap-
proximately one -half of the off-hitch- ing
should be taken en the plow and one -half on
the tractor, move the plow hitch 7-1 /2 inches
to the right of the line of draft and the tractor
drawbar 8 inches to the left of the center of the
tractor. Both the trac- tor drawbar and the plow
hitch will then be 31 inches from the furrow
wall. The plow hitch will now run straight and
be parallel to the furrow wall.
the land and allow the tractor draw- bar to swing
free. The plow hitch must be adjusted to conform
to the position of the center of the
tractor drawbar. To find this position,
measure the dis tance from the outside of the
right- hand track to the center of the trac- tor
and add 3 or 4 inches to permit driving far
enough frorri the furrow wall to prevent
breaking it down. Then set the plow hitch on
the hitch crossbar the same distance in from
the furrow wall.
Hitching Chart On the next page are examples of
correct measurements for hitching a plow an.d
tractor combination. We suggest that you work out
the meas- urements listed for any plow and
tractor combination, using the in- structions on
pages 10- 1 2, and then apply these same
instructions to your plow and tractor
combination. A handy hitch calculator giving
similar information can be obtained from your
John Oeere dealer.
Hitc hing Track-Type Tractors When using a
track type tractor with these plows, run both
tracks on
16
0 PERATI ON
13
PLOW HITCHING CHART John Deere 620, 630,
720, 730, 60, or 70 Series General-Purpose
Tractors
N u m ber ok B citewe Si ze ok Botomz Trac for Wheel S ettirig I n aide No I n aid e of Hi re a Li ne of Dr aft Fro m Our row W a I I c Tra t or D re w be r Po zi i pm PI ow Hi c H I o Furrow WaII
3 14 49 24-1 /2 Center 24-1 2
3 16 56 28 Center 28
4 14 63 31-1 /2 Center 31 -1 2
4 16 72 36 Center 36
5 14 72 38-1 2 Center 36
5 16 72 44 4 to Left 40
John Deere 620, 630, 720, 730, 60,
70, or R Series Standard Tractors (Fixed
Tread)
3 14 46 24-1/2 Center 23
3 16 4fi 28 2toLeft 25
4 14 46 31-1/2 4toLeft 27
4 16 46 36 6toLeft 29
S 14 46 38-1/2 8toLeft 31
S 16 46 44 13toLeft 36
John Deere 620, 630, 720, 730, 60, and
70 Series istandard Tractors (Adjusta ble Tread)
3 1 49 24-1/2 Center 24-1 /2
3 16 56 28 Center 28
4 14 62 31-1/2 Center 31
4 16 62 36 2 to Left 33
S 14 62 381/2 3-1/2 to 34-1/2
5 16 62 44 6 to Left 37
Left John Deere 820 and 830 Series Tractors
Equ ipped with 18x26 Rear Tires on 16 Wide
Rims 5etting
Nawoe Settng Wide
4 14 l4 49 56 31-1 /2 3 l- 1/2 3-1 /2 to Left Center 28" 28
4 4 16 16 49 56 36 36 5-3/4 to 4 to Left 30-1/4 32
5 14 49 38-1,/2 7 to Left 31-1 /2
5 5 14 16 49 56 38-1/2 44 5-1/4 to Left 9-3/'4 to 33-1/4 34-1/4
16 56 44 Left 8 to Left 36
Left
NOTE When 820 or 830 .Series Tractors aTe
eqiiipped with olheT lhan 18 x 26 inch fiT PM th
trOCtOT dratrbOT position aTtd ptow hitch lo
furiou- ' dimensions will tar 5 slightly
accordiTig IO tiT Sizes. Mont like sei'- ,'
-- Jorm to rear tit e setting, cente7 io center
oJ tires.
17
0 PERATI ON VERTICAL HITCH ADJUSTMENTS ADJUST
ING HULES
CENTER LI N E LJF DRAFT .lt-
OLEVIS JAWS
PUINT OF RESISTANCE
H ITt?H DRAWBAR
Adjust the clevis jaws on the plow so the plow
hitch will fall ran a straight line from the
tractor draw bar to cen ter point of resistance
on the plow. Four holes are provided in each
clevis jaw for this adjustment. If the clev is
jaws are adj usted too high for the depth of
plowing, the tractor will pull down oti the
front end of the plow. The bottoms will boun ce
along on the points of the share, resultin g in
heavy draft, un- eveipenetration, excessive wear
on shares ancl wheel l oxes in land aiad furrow
wheels, anlt a poor job of plow in g. If
the rear whee1 attempts to run up tire furrow
wall, it is a good indica tion the clevis j
aws are set toe high and you are puffin g down
on the front end of the plo w. If the cievis j
aws are adj usteci too low fr the depth of
plowin g, the tractor will pull up on the front
end of the plc w. The brttoms will pene-
trate very slowly, resulting in ex- cessive
weight on rear wheel of the plow and a wavy
furrow bottom.
Lliteh C Ievis Co upler A hitch clevis coupler is
available as special equipment for attaching
these plows to tractors which have the forLed or
clevis type draw bar. This coupler will raise
the vertical hitching point to the recommended
heioht.
TYPEâ OF t4lTCHES CRJSH ION SPRING RELEASE HITCH
The C usliiori Spring Release Hitch permits the
ploiv to be pul!ed on a cushion at all times.
This is accorn- plished by pulling through the
U-bolt which compresses tne springs. When an
obstruction is encountered, springs are
compressed to a greater degree permitting the
revolving hook to make a one third turn
releasing the
plovz from the tractor. As the load is released,
the revolving hook snaps tack to position,
ready for rehitcñ- iiig. Rehitching is
accomplishecl by raising the hitch and backing
the tractor into position and engaging the
revolving hook with the hitch link.
18
0 PERATI ON
fiefease I-fiteh
Adjust the Cushion Spring Release Hitch with
proper tension on the springs to meet with
draft require- ments of the soil condition in
which the plow is being operated. To insure
maximum protection, reduce the trip lead of the
hitch when starting the plow by relieving the
tension on the springs until the hitch will
release as the result of the draft of the soil.
Then tighten the two nuts 'A equally
one-half turn each until the hitch will not
release as the result of
the draft of the soil. When the hitch is adjusted
in this manner, it Will al- ways be free to trip
when an obstruc-
tion is encountered. CAUTION
Never draw up the spri rigs to the
point where too rnuch tension is
created as this will prevent the release
mechanism from oper- ating. Thehitch requires
no service other than occasional lubrication
of the revolving hook and hitch trigger.
HITCH LIN K
H ITOH TPI GGER
Cuchcon S pr in g be fese Hi teh
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16
O PERATI ON
CUSHION SPR I NG HITCH
To insure maximum protection, it is recommended
that proper clutch
releases be used with the Cushion Spring Hitch.
TRACTOR CLUTCH RELEASE
"s2i," "s34," "62a," "rna," "z2o," or "G"
Series tractor a
Adjust the tractor clutch release with the
proper amount of slack in the chain to meet with
draft require ments of the soil condition in
which the plow is being operated. With the
tractor clutch engaged, hook the chain on the
lower end of the spring at "A," allowing enough
slack to
permit operation under normal p1ow- ing
conditions but keeping it tight enough to
throw out the tractor clutch when an
obstruction is en- countered in the field. Fine
adjust- ment on the chain length can be
made by moving the pulley support in slot at "l3."
21
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friend! Thank you very much for reading. Enter
the link into your browser. The full manual is
available for immediate download. https//www.ebo
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