MANUAL
'x
“’'SPERRY RA(\D
f\EW HOLLAI\D
MOWER
451 - 45B
A
Note
to You, Mr.
Owner:
buying a New Holland Mower, you have chosen wisely.
Into it have gone years of
thought research and improvement. You will find, as
have thousands of owners all over
the world, that you have the best that engineering
skill and actual field testing can
produce. You have purchased a dependable machine,
but only by proper care and operation can
you expect to receive the performance and long service
built into this machine.
In
manual contains all the necessary information for you to
receive full efficiency of your
mower. The performance you get from this machine is largely
dependent upon how well
you read and understand this manual and apply this
knowledge. The mower is a simple
machine but a machine in which causes for trouble are
often overlooked, even though apparent These troubles are normally shown in poor
work, though they are largely due to
natural wear or parts not being in original adjustment
or condition.
Therefore please do
not assume that you know how to operate and
maintain your mower before reading this
9
manual carefully. KEEP THIS MANUAL AVAILABLE FOR
READY REFERENCE
This
Your
New
Holland Dealer will instruct you in the general
operation of your machine
He is
your getting the best performance possible, and his
staff of factory trained sera " y SPeC a
,h =*
regarding the operation
New Holland
interested
0“™
in
^
'
'
^
Your New Holland Dealer also carries a complete line
of genuine New Holland service parts.
These parts are manufactured and carefully inspected
in the same factories that build
the
mowers to assure high quality and accurate fitting of any
necessary replacements
WARRANTY
New
New
Holland warrants to each purchaser of New Holland
new equipment from an authorized
Holland dealer that such equipment is, at the time of
delivery to such purchaser free
trom defects in material and workmanship, if used and
serviced in accordance with the recommendations in the Operator's Manual. New Holland makes no
other warranty express or
’’
implied in fact or by law.
-
New Holland
mg any part
Holland
s
s
obligation under this warranty is limited to repairing
or, at
is returned, transportation prepaid
to New Holland's
that
|udgment
its
option
factory, that
defective.
replac'in
New
Except as set forth above New Holland shall have
no obligation or liability of any kind on account of any of its
equipment, and shall not be liable
tor special or consequential damages.
is
NEW HOLLAND
DIVISION OF SPERRY
New
RAND CORPORATION
Holland, Pennsylvania
IMPORTANT
Record the
serial
number
of your machine here
Always specify the model of your mower and
its
or ordering service parts.
serial
number when
writing for information
ABOUT IMPROVEMENTS
New
Holland
continually striving to improve its products,
and, therefore, reserves the right
or changes, when it becomes practical and
possible to do so without
incurring any obligations to make changes, or
additions to the equipment sold previously
to
is
make improvements
p972
NEW HOLLAND
DIVISION OE SPERRY RAND CORPORATION,
NEW HOLLAND, PA
1
7057
CONTENTS
ADJUSTMENT AND MAINTENANCE
Bearings
Cutter Bar
Cutter Bar Lead
Gag Linkage
Driye Belt
LUBRICATION
.
.
.
Guard Alignment
Hydraulic Cylinder
Inner Shoe
Knife
Knife Clips
Lift Cable Length
Lift Spring and Cable
Mower Frame Height
Tipping Bearing
Wear
.
.
.
25
23
24
24
24
23
Attaching and Detaching
6-17
Breakaway Latch
Knife Removal
Operating Speed
P.T.O. Speed
Shoe Runners
21
22
18
19
22
22
22
Storing
23
24
25
24
Swathboard
Tilt Adjustment
21
18
21
Transporting
Turning Corners
14
18
CONDITIONER ADAPTERS
27
23
Plates
MOST FARM IMPLEMENT ACCIDENTS CAN
BE
AVOIDED BY THE OBSERVANCE OF A
FEW SIMPLE SAFETY PRECAUTIONS.
s
1
.
DON'T CLEAN, LUBRICATE, OR MAKE
MOTION.
ANY ADJUSTMENTS ON
THE
MOWER
WHILE
IT IS IS
2.
3.
4.
DON'T START THE MOWER UNTIL YOU KNOW THAT EVERYONE IS CLEAR OF THE
MACHINE AND HAVE MADE SURE THAT NO TOOLS ARE LYING ON THE MACHINE.
DON'T WORK AROUND THE UNIT
ANY OF THE MOVING PARTS.
IN
LOOSE CLOTHING THAT MIGHT CATCH IN
DON'T ATTEMPT TO PULL MATERIAL FROM
IS IN OPERATION.
ANY PART OF
THE
MOWER
WHILE
IT
USED THROUGHOUT THIS BOOK WHENEVER YOUR OWN PERSONAL SAFETY IS INVOLVED. TAKE TIME TO BE
CAREFUL!
BE CAREFUL! THIS SYMBOL
6
OPERATION
18
14
.
4, 5,
IS
3
LUBRICATION
Lubricate
the sliding surface of the P.T.O.
square shaft and tubing with a good
grade of
9
grease gun lubricant after every 8 hours
of use. Do not lubricate the P.T.O
shields.
Lubricate the followi ng parts with a
grease
fittings before applying grease.
OIL
from
Tapered bearings
in
gun containing a good grade of grease
ALL LINKAGES EVERY 50 HOURS.
upper and lower drive hous ings should be
checked
adjust and repack bearings.
at least
FIGURE
Wipe
once
dirt
a year.
1
10.
FOR MODEL 451 MOWER ONLY
1.
Front PTO universal joint.
2.
Telescoping PTO, (align holes
in
the
PTO
shield).
PTO
3.
Rear
4.
Upper drive housing.
Left, stabilizer frame
pivot.
Right stabilizer frame pivot
5.
6.
7.
8.
9.
N
Left,
universal joint.
I
(not shown).
cable shaft.
Right, lift cable shaft (not
shown).
Lift cable idler, oil
every 50 hours.
Push rod bearing.
lift
E
OMPLETE THE LUBRICATION RE;
?n rJnn
F GURE
4 AND THE SECT,ON ON "ALL
MODELS "
<
PPD
'
4
FOR MODEL 456 MOWER ONLY
Front PTO universal joint.
2. Middle PTO universal joint.
1
8.
9.
.
Tipping bearing.
4. Telescoping PTO, (align holes
10.
3.
in
the
PTO
PTO
Rear
6
Upper drive housing.
.
Push rod bearing
1 1.
Lift cable idlers,
12. Jack.
shield).
5.
Tipping bearing support.
Hydraulic lift arm assembly
(refer to Figure
oil
1).
every 50 hours.
universal joint.
S
NOTE: To complete the lubrication refer to
Figure 4, and the section on "All Models."
KEEP (HILDREI1
5
MIMV
9.
12.
FIGURE 4
AND 456
FOR ALL MODELS, 451
1.
2.
3.,
7.,
Rear cutterbar hinge support.
Gag quadrant.
4., 5., 6. Pivot link bearings.
8. Connecting rod bearings.
Front cutterbar hinge bearing.
Breakaway latch pivot link.
10.
Breakaway
Breakaway
11.
-
latch.
latch pivot links.
TRACTOR ATTACHMENT
- HITCH
451 MOWER
The Model 451 Mower is designed to fit
most tractors with ASAE three point hitches of
Category
and Category II. It is necessary to
install the spacer provided in the stabilizer assembly when using the mower on tractors with
Category hitches. It will be necessary for the
3.
Back the tractor into the mower so that the
ends of the lower (draft) links are di-
ball
I
rectly
under the hitch pins on the mower.
NOTE: Leave the
position as shown
I
owner
to purchase spacers for the
mower
ing pictures
hitch
clarity.
when
using the mower on Category II
Usually all 3 plow or under tractors
have Category hitches and 3-4 plow or larger
tractors have category II hitches.
pins
show
bar in transport
Figure 5. The followthe cutter bar down for
cutter
in
hitches.
4.
Attach the ball end of the
left
lower link
I
1.
2.
Make sure the paint, rust and dirt are
moved from all the hitch pins and
SPLINED P.T.O. COUPLING.
to the
shown
in
Figure
hitch
pin
and secure with
lynch pin, see Fig. 6. Use spacers (provided
by the tractor manufacturer) on the pins
for category II hitches.
Attach the right
lower link in the same manner using the
leveling crank on the right lift link to align
the lower link hole with the pin on the
re-
the
Place the stabilizer frame in a vertical position as
mower
mower.
5.
6
STABILIZER FRAME
ATTACH EYEBOLT HERE TO HOLD
FRAME IN VERTICAL POSITION
MODEL 451 MOWER IN CENTER
WHEEL TREAD-PARKED POSITION
FIGURE S
UPPER LINK
ADJUSTMENT SHAFT
JOHN DEERE TRACTOR -RIVET
HEAD AS SHOWN, BOTH SIDES
(L.H.)
IT
STEPS
IN
TRACTOR LOWER LINK
ATTACHING THE 451 MOWER
CENTER TREAD
POSITION
FIGURE 4
7
mower
P T
«
PTa
to ,he ***,,-.
sary ’° shor,en
,he
ZJhi
O $haft
sh^ron
some model
it
tractors.
Be
ure t° remove the
same amount from each
P,T.° secfon.
Before cutting the
assem
blies check the
P.T.O. through the
full f?ft
ran ge of the three
point hitch.
,
NOTE. When mounting the
mower on John
,h
oinf hitch made ri
p
°r
to
° the
rne 1010
lulu, 2010 and 3010 DO Not ice Ptuc
mower with the INNER shoe SET
SI
right position AS THE
PTO SH
SHAr
w7m
broken when the cutt?r
ba?
1
mf ?™
,
i
M
«
6
f
'
abil 2er
'
trembly and
*
he Upper
j(
normelnecessary to use the
fasten? Fig.
v fastens.
F 5. It is
y
spacer (provided with
the
point on category
I
atfach
link
mower)
at this
tractors.
•
.
.
N
TE
Wi " be necessar to cut
four inches
y
'l
ad|ustment shafts, see
Figure 6 for
mounting, on some tractors.
See sJSion under
tractor attachment-various
tractors to see if this
is required.
Shortening of the adjustment
shafts
f° r
A S6COnd ho,e 4 inches below
th
the
top hole is already in
place so that the roll
pins can be moved to
this
2
8.
Position the
Raise the
clamps
to
cl/ar
bolts of the
the
££
mower up
as far as possible
then
inches 30 that the
eye
1
boTts" will
||
bolts
clear the stops at
A Fioure 7
UP OWer ha ,f ° f the sta bili
2 er frame
bv hhand
J until the
L
by
overcenter damn can
be attached. Lock the
overcenter clamps
Figures 6 and 7 and
release the hydraulic
|
i
.
position.
9
'
9 * ° f * he
'ini' until
mower frame at Point A
level. Ad| U s. the
length
the “oVof
top of the
I?
F^ure 8
i,
the
[lower link CRANK
DEPENDINQ ON TRACTS?
)P_HOLE_IF POSSIBLE
ADJUST LEN6TH TO
LEVEL FRAME
OVERCENTER
CLAMP LOCKED
'fc
CROSS FRAME-LEVEL
™ WITH
LOWER LINK CRANK
CROSS FRAME MUST BE 16-1/2“
ABOVE \i
THE OROUNO AND LEVEL
r
FIGURE 8
8
eye
ab OUt
'
Attach the tractor upper
link to the stabilSSem y and t0 the mower
frame as
shoJ m cFigure 6. It is
shown
necessary to use
the spacer supplied
in one end of
the
category II upper link.
NOTE: It may be
necessar v_to lengthen the
upper link to get
FIGURE 7
.
overcenter
'‘
nff
off the
7.
I.
,
installed.
it
top of each
frame
is the same
end of the mower
shown in
appear
as
height. Mower should
Figures 9 and 0. Figure 9 shows the cutter
right tractor
lift
link until the
REMOVAL OF MOWER FROM THE TRACTOR
RAISE THE MOWER AND RELEASE THE OVER
cross
CENTER CLAMPS,
1
AND
CHECK THE
FRAME HEIGHT AND ADJUST IF NECESSARY AS SHOWN ON PAGES 4 &
bar
in
transport
position.
1
UNHOOK
THE
EYEBOLTS
THEM TO CLEAR THE LOWER
CLAMPS, FIGURE 7. LOWER THE MOWER TO
THE
RAISE
GROUND AND UNHOOK
IT.
1
FIGURE 10
9
GAG POST EXTENSION
9' CUTTERBAR ONLY
456 MOWER WITH
9'
CUTTERBAR
FIGURE
11
TRACTOR ATTACHMENT - VARIOUS TRACTORS
The following is a list of tractors to which the Model 451
any alterations or with slight alterations to mower or
the
Mower
has been attached without
tractor and, in a
few
— Standard with factory installed 3-point
D-14 Standard with 3-point adapter.
D-15 Tricycle with 3-point adapter.
190 — Sway Stops must be removed.
ALLIS-CHALMERS D-10, D-12, D-15
COCKSHUTT 550
Ford 610
801
901
Tricycle (Tractor stabilizer bars must
to the maximum height.)
be removed
if
cases, to both.
hitch.
mower
is
to
be raised
— Standard
— Standard
— Tricycle
2000 -All Models
4000 — All Models
5000 — Standard
6000 — Tricycle
Fordson Super Major - Standard - 5000 Super Major—
P.T.O. shield must be removed.
Ford Dextra - Standard - 2000 Super Dextra
10
INTERNATIONAL
— may
FARMALL 404-504-606
or
706-806
656
FORD 8N — Standard
—
JOHN DEERE 2010 —
Standard
be necessary to move the hydraulic hose
coupler or
PTO
shield.
Tricycle
must be
1 Vs inch diameter PTO shaft so an adapter
lVa"
45898
No.
with
yoke
detachable
quick
the
used or replace
Parts.
Service
through
spline yoke. Order
This tractor has a
may be necessary to remove tractor PTO shield which requires pulling of a spring-loaded pin.)
1010-1020 Standard (Don't use the wide tread position on Model 1010.)
1020
3010-3020
4010-4020
(It
RU and HU.
Utility
Tricycle
necessary to set mower on " blocks so that stabilizer
frame plates do not interfere with upper link point on tractor
when trying to connect stabilizer frame to tractor.)
Remove tractor lower lift arm stabilizer guides.
Tricycle
—
2510
may be
(It
—
—
135
50
85
Standard
Standard
50
Standard
65
Super 90 — Standard
MASSEY-FERGUSON
35
MINNEAPOLIS MOLINE
Jet Star
1
—
—
—
Standard
Standard
Standard
445 - Standard
Standard
Standard - P.T.O. shield must be removed
-
— 302 —
G — 900 — P.T.O. shield must be removed.
1000 — P.T.O. shield and lower arm stabilizer
U
blocks must be removed.
—
NUFFIELD 342
460
OLIVER 550
-
Standard
Standard
Standard
1550, 1650, 1655 must use adapter bundle
95578.
—
1750 use bottom hole
top
in tractor
bracket for
link.
PORSCHE Super
—
The following are
Standard
tractors
which the mower
will fit either
by
altering
mower
or tractor or
both.
CASE VAC
—
Tricycles
— PTO
assembly
is
too long.
Two
inches should be cut off each por-
tion.
430
200
530
630
—
—
—
—
— Tractor
— Same as
— Same as
— Same as
shield and mounting bracket must be removed.
Standard
PTO
Tricycle
430.
stated for 430.
stated for 430, plus
Tricycle
Tricycle
stated for
a
1-inch diameter pin
is
needed
to
connect the stabilizer frame to tractor as a IVa diameter pin is
furnished with tractor. Spacers should be used to remove play
from lVs diameter holes.
COCKSHUTT 540 —
Standard
—
left adjustment shaft and anthe
roll
pin. It may be necessary to
provided
for
other hole
shortening
stabilizer frame so that it
blocks
after
set mower on
point
tractor.
on
will reach upper link
Six inches
must be cut off the
11
"
UM
N ° ,e: Ada P ,er
ORD
7U)
n °>
V/3 ° 6 ada P to bundle.
(See mounting
^uired on 1966
or
(1955 model) - This tractor has
d
re
Tricycle
sX'e yokT
trlcSrs
La°ter
assembly may have
a
INTERNATIONAL and FARMALL 404 Tricycle
656 - UTILITY
(ENGLISH MADE) B-414 — S
Standard
andard - aa
-
/3 " diameter
t
1
PTO
shaft
6
1
hawa p/e /'"
m
an adaptlr
°
Tractor PT
PTO
u
h' eld
h
'
is
PT °
used'
n
must be
remove d-
Mower must be parked on
424
JOHN nFFDP irnn
must be
o
-
:
s5o°
4
,
4-inch blocks as tractor
lower
Pins in fift 'inks on
tractor
holes rather than slots.
"2 ° W !
used
in
en ° U9b
r
-
,
9
Provided for on
Clearance
-
Remove PTO
451
Mower
CASE 730 & 830
will
—
shield
mower on 3"
Set
w ^ht';«VfepSng Xor
Follow the Owner's Manual
The
Th,s a d|ustment
**
Hi Clearance
H,
H
9
this tractor
zstJrJr-
MASSEY-FERGUSON 85
IMPORTANT
i
,
,s
c+
19Sn
when
NOT
fit
blocks
attaching the
on the following
when
mower
parking
i,
File
an
to the tractor.
tractors:
Eagle Hitch
630 with Case-O-Matic transmission
FORD 501
—
Offset
OLIVER 660, 770, 880, 1755, 1855
COCKSHUTT 1600
MASSEY HARRIS 33
MINNEAPOLIS MOLINE U-602
- M670 -
1050
DAVID BROWN
TRACTORS
NOTE: The
special adapter
not required on
brown
bundle 97306
1966 or newer model Davi
Tractors.
The exceptions are that the link
W.A Flour*
12, must be bolted to the
mower st'abiLi
frame as shown. A strut and
rod end assembly
Figure 12, must be used in
place of the Davie
Brown upper link which is too
long for this
The procedure for mounting
the Model 451
a
965 or older David Brown Tractor
Mower on
1
basically the
^he mower on
same
is
any
o-point linkage.
as outlined for mounting
tractor with standard ASAE
application.
12
,
newer models.
be shortened
to
i„ sfru
r
FIGURE 12
It is
recommended
that the tractor
sway
bars.
be used when the Model 451
operated on any David Brown Tractor.
Figure
12,
is
OLIVER TRACTORS
MODELS 1550-1600-1650
The Oliver adapter can be installed by first
removing the swinging yoke supplied with the
tractor and then attaching the mount weld assembly as shown in Figure 13.
The procedure
Mower on
same
any
mounting the Model 451
for
an Oliver Tractor
as outlined for
is
basically
the
mounting the mower an
tractor with standard
ASAE
3-point linkage.
FIGURE 13
and rod end
assembly, Figure 13, must be used in place of
the Oliver upper link which cannot be used
The exception
is
that a strut
for this application.
13
ADJUSTMENT
*
FIGURE 14
Mower Frame Heighf
A.
1
.
2.
Check the height of the top of the mower
frame box section above the ground. It
should be 16V2 inches, as shown in Figure
14, with both ends being the same height.
4.
the adjustment is not correct, raise the
with the hydraulic system and release the overcenter clamps. Figure 7, on
the stabilizer assembly. Lower the mower
If
mower
the lower clamp bolts are in corresponding
notches on each side. Figure 7 shows the
proper location for the lower clamps after
adjusting the mower frame height on the
by means of the hydraulic system until the
mower frame is at the proper height. See
John Deere 1010
Figure 14.
3.
5.
assembly up as far as possible
and move the lower part of the clamps up
as far as possible and lock the clamps.
stabilizer
the bolts previously
correct adjustment notches
1 5
but do not tighten.
tractor.
notch will raise or
proximately 1".)
Remove the bolts in the lower half of the
overcenter clamps. Figures 7 and 15. Push
the lower telescoping members of the
Install
Release the hydraulic system and recheck
the frame height. If it is correct, tighten
the clamp bolts or relocate the clamps in
different notches. Figure 15, so that the
height is correct and tighten the bolts. The
clamps should be adjusted equal so that
removed in the
shown in Figure
(Each adjustment
lower the frame ap-
Level the mower frame at Point A, Figure
8 by lengthening or shortening the upper
link.
B.
Location of
Mower
Inner
Shoe
The inner shoe of the 451
Mower
located in three different positions to
can be
accommo-
date various rear wheel tread widths.
14
justed
the narrow wheel tread position.
adapter is used with the Model 456
for
Also this
with Rope Control.
Use adapter bracket on these two applications only.
The outside of the right tractor
clear the uncut crop 3-6".
The inner shoe of the 451
wheel should
mower
is
set in
the left position when the distance from the
center line of the tractor to the outside of the
right tire is 37 inches or less. Use the center
position. Figure 16, when the distance is 37-41
Set the inner shoe in the right position
the distance is 42-46 inches.
inches.
if
To change the position of the mower inner
shoe when it is mounted on a tractor put the
transport position and raise the
mower as high as possible. Lift up on the cutter
bar assembly, disconnect the lift spring at D,
Figure 16. Release the over center clamps on
the stabilizer rods and lower the mower to the
cutter bar
in
ground.
cable and remove the bolts
and straps at A and B, Figure 16. Move the
cross frame member to position the inner shoe
at the desired location. Replace the bolts at A
Disconnect the
FIOURE 15
lift
and B, Figure 16, with the bolt heads down.
Use the spacers at the bolt heads if the conditioner hitch is not being used.
NOTE: The adapter bracket shown in Figure
29 should be used with the Model 451 when
a 9' cutterbar is installed and the mower is ad-
LIFT SPRING EXTENSION
MOWER U-FRAME
LIFT CABLE
CROSS
LIFT
F RAME
memberH
CABLE EXTENSION
CABLE ADJUSTMENT
STRAPS
SAG LINKAGE
ADJUSTMENT
PUSHBAR BEARING
7
MOWER ADJUSTED FOR
CENTER WHEEL TREAO POSITION
A-**
INNER SHOE RUNNER'
FIOURE 16
15
For the wide wheel tread position,
install
the cable eye in the extreme left hole
of the
lift cable extension straps and
the lift spring in
the extreme right hole of the lift spring extention strap.
For the narrow wheel tread position, install
the cable eye directly to the cable adjustment
straps (the lift cable extension straps are
not
needed in this position) and the lift
spring in
the third hole from the right end
of the extension strap.
For the center wheel tread position,
install
the cable eye in hole F, Figure 16.
Install the
lift spring in the center
hole of the lift spring
extension strap.
IMPORTANT: On some make and model
tractors the P.T.O. shaft may
be to the left of
the tractor center line or higher
than usual
above the ground. The center line
through the
mower drive sheave shaft must not be more
7V2 "
than
to the right of the center line
of the
tractor P.T.O. shaft. Use the center
position or
the loft position
ceeds 7V2
will
It
the offset
in
the drive ex-
be necessary to readjust the
whenever
changed.
if
‘
lift spring
inner shoe is
See Page 24 for adjustment.
the
position
of the
necessary to use the lift cable extension
when the middle position or
the extreme right position is used.
is
It
straps. Figure 16,
Check and adjust the lift cable, Figure 16,
and the gag linkage as required after changing
the position of the inner shoe.
FIGURE 17
HITCHING INSTRUCTIONS
MODEL 456 MOWER
Select a tire size that will hold the
top of the
mower box frame
17" above the ground. 6:40
x 15 or 7:50 x 14 are
recommended.
The Model 456 Mower can be used
with almost every tractor with a hitch
point and a
power-take-off shaft. The top of the
tractor
hitch point must be 13 to 17
inches above the
ground line. The end of the tractor P.T.O.
shaft
must be 14 inches forward of the hitch
point,
and 6 to 15 inches above it. The
mower is
equipped for hydraulic control and either
a
single or double acting standard
ASAE remote
control cylinder may be used.
(20% inches between ends when retracted, 28%
inches when
fully
extended).
Back the tractor drawbar hitch point next
to
mower tongue hitch point. Use the parking
jack to level the mower hitch point
to the height
of the drawbar. Swing the mower
into place
the
and pin the tongue
mower
16
to the
drawbar.
A
hitch
pin with a cotter or hair pin on the
lower end
should be used to prevent the possibility
of the
breaking
away from
the tractor.
HOSE CLAMP
TIPPING BEARING SUPPORT
LIFT CABLE
ARM
I
.1
456 MOWER WITH HYDRAULIC
CONTROL ATTACHED TO TRACTOR
FIGURE IB
Crank up the jack until the base plate is as
high as it will go/then release the lock-pin at
point A, Figure 19, and raise the jack until the
lcx;k-pin lines up with the lowest hole on the
jack tube. The jack should be locked in this
tractor
position during the transport or operation
tractor
the
of
line
right
rear
tire
to
the
drawbar
should be approximately 41
mower.
The
in
tire. The right wheels on the tractor
should be shifted to accomplish this alignment.
The distance from the right side of the right
2
hitch
inches.
edge of the inner shoe should be
with the right side of the right rear
A
BE CAREFUL
DO NOT ATTEMPT TO CLEAN OR
ADJUST THE MACHINE WHILE
IT IS
RUNNING
FIGURE 19
I
17
point
IMPORTANT: The center of the hitch pin hole
the swinging drawbar must not be more than
7’/2 inches to the right of the
center line of the
tractor P.T.O. shaft.
Offsetting the drawbar
farther than this will result in undue wear in
the P.T.O. shaft universal joints and in the
tipping bearing.
in
cannot be done without causing considerable misalignment of the P.T.O. drive behind the tractor because of a too wide wheel
tread, it is desirable to reduce the wheel tread,
instead of running the mower with a misaligned drive assembly.
If
this
TIPPING BEARING ADJUSTMENT
The tipping bearing should be adjusted so
that the drive train is as nearly in a straight line
as possible. Aligning the drive in both hori-
zontal
and
vertical
planes will result
mum
life
P.T.O. shaft vibration
of the universal joints.
and
HYDRAULIC CYLINDER
The remote hydraulic lift cylinder should
normally be mounted with the rod end attached to the lift cable arm, however on some
tractors this is not practical. The fixed cylinder
end can then be attached to the lift cable arm.
The cylinder hose
fittings
should be on top
of the cylinder or on the side away from the
P.T.O. shaft. The hoses should be held firmly
in the clamp provided on the tipping bearing
support as shown
in
CAUTION: Make
Figure 18.
sure the hoses
do not
con-
tact the P.T.O. or its shield as contact will result
in
hose damage.
The lift arm return spring is needed only
with single acting hydraulic cylinders. It should
be removed
if
double acting cylinder
a
is
used.
miniprolong the
in
When mowing dense
crops the tires may be
with calcium chloride and water solution
to reduce side draft.
filled
OPERATION
The Model 451 Mower is transported with
the cutter bar folded back over the base unit
and locked in place with the transport latch.
The mower should be raised up as high as
possible with the tractor hydraulic system when
it is
in transport position.
The Model 456 Mower cutter bar is folded
back over the base unit and latched in place
with the transport latch. Extend the hydraulic
cylinder to raise the cutter bar to the highest
position to prevent the driven sheave from
striking the ground.
THE OUTER END OF THE 9-FOOT CUTTER
BAR SHOULD BE TIED DOWN TO PREVENT
WHIPPING FOR ROUGH OR EXTENDED PERIODS OF ROAD TRAVEL.
Start
mower
the
operation by lowering the
to operating position, release the transfield
port latch and swing the cutter bar into operating position.
HANDS CLEAR OF THE AREA
BETWEEN GUARDS AND KNIVES
AT ALL TIMES.
KEEP
GROUND
SPEED
The normal ground speed range of the 451
and 456 Mowers is 3-8 mph depending on
ground and crop conditions. Do not exceed 10
mph ground speed while mowing.
It is necessary to reduce ground
speed while
maintaining the same P.T.O. speed in heavy or
lodged crops.
speeds can be
In
cutting operation.
18
light
crops higher ground
with satisfactory
maintained
CHILDREfl nuinv
AND SICKLE CRANK SHAFT SPEED
The rpm of the sickle drive crank should not
exceed 825 rpm with normal speed being 800
rpm.
P.T.O.
The drive sheave on the 451 and 456 Mowis a variable type by means of shims and
ers
reversible rear half.
The variable drive sheave enables the operspeed between
540 and 720 rpm. He then must select the
proper sheave setting as shown in the table
below to maintain an 800 rpm sickle drive crank
ator to select the tractor P.T.O.
speed.
SHEAVE SETTINGS FOR GIVEN
P.T.O.
Tractor P.T.O.
Side of rear half of
Speed
Sheave toward the belt
RPM
RPM
RPM
RPM
RPM
RPM
RPM
RPM
RPM
710-720 RPM
540
560
580
600
610
630
650
670
690
High
High
High
High
High
Low
Low
Low
Low
Low
Side
Side
Side
Side
Side
Side
Side
Side
Side
Side
19
SPEEDS
No. of shims to be placed
between sheave halves
0
1
3
5
6
1
(As shipped)
2
4
5
6
FIGURE
For example,
if
you desire
21
to run the tractor
540 rpm, enter the table at 540 rpm and
read to the right. It calls for no shims to be
installed between the sheave halves and have
the high side of the rear half next to the belt.
Figure 21 shows the variable drive sheave.
Figure 22 shows the low side of the sheave
turned towards the belt.
P.T.O.
The sheave adjustment is made by disassembling the sheaves and moving the shims
between the two halves of the sheave. The
FIGURE 22
more shims between the
halves, the smaller the
sheave diameter
slower knife speed.
effective
and
(KEEP GREASED)
LIFT SPRING ADJUSTING BOLT
GAG LINKAGE
ADJUSTMENT
'
•»
FIGURE 23
20
a
Remove the capscrews and remove or add
shims as required, and turn the required side
of the rear half of the sheave towards the belt.
Store the unused shims under the heads of the
capscrews. Tighten the bolts to 19 ft. lbs. of
torque. Adjust the drive belt as outlined in the
"Drive Belt" section of this manual.
BREAKAWAY
LATCH
CONDITIONER HITCH
(OPTIONAL)
therefore
TURNING CORNERS
TILT
The cutter bar should be run level with the
ground whenever possible. Should it be necessary to change the tilt of the cutter bar for short
Neat square corners can be made with the
mower without
When
raising the cutter bar.
using the fully mounted
to the left slightly
mower,
when approximately
a
ADJUSTMENT
turn
when hay
down by
is lodged, the guards can
loosening the bolt at A,
Figure 24, and rotating the push bar. If a higher cut is desired adjust the shoe runners to secure the proper height of cut.
cutting or
swath
be
from the corner and then turn sharply to the
right using the brake on the right tractor wheel.
BREAKAWAY latch
tilted
The cutter bar will swing back if a field obstruction is encountered. After the safety latch
releases and the cutter bar swings back, stop
the tractor and P.T.O. immediately. To reset,
back the mower into normal position. Do not
raise the cutter bar to relatch the break-away'.
in
The latch. Figure 23, is set at the factory and
most conditions will be satisfactory.
Check
if
for dull or
the latch releases
broken sickles and guards
normal mowing.
in
The latch can be tightened by increasing the
compression of the breakaway latch springs.
CAUTION: Do not tighten the breakaway latch
springs more than necessary for normal mowing. 400 lbs. pull at the end of the 7 ft. cutterbar and 310 lbs. pull at the end of the 9 ft.
cutterbar should open the latch.
FIGURE 24
the breakway latch is set too tight the
push bar may be bent if an obstruction is struck
by the cutterbar.
If
LOWER DRIVE HOUSING
»
;/•
Tf
(W/
^KNIFE HEAD BOLT-TIGHTEN TO 85-90 FT LBS.
TORQUE WITH KNIFE IN MID-POSITION
-mmr.
>
r-*»
FIGURE 25
21
ADJUSTABLE SHOE RUNNERS
The runners may be adjusted
to regulate the
cutting height by inserting their attaching bolts
in the desired hole. Loosen the front bolts in the
inner shoe before attempting to change the
inner shoe height. Be sure both the runners
are adjusted to the same height. On rough or
stony land, the cutting parts should be protected
by adjusting the runners to raise the cutter
See Figure 16 and Figure 36.
KNIFE
bar.
REMOVAL AND REPLACEMENT
Remove the knife head from the drive plates
by removing the I/2 " capscrew through the drive
plates and knife head indicated in Figure 25.
Always check the replacement knife to be
sure it is straight especially in area from the
knife head bushing to' 15-1 6 inches to the right
along the knife assembly.
WHEN A NEW
KNIFE
IS
SURE THE KNIFE HEAD BOLT
INSTALLED,
MAKE
TIGHTENED TO
85-90 FT. LBS. TORQUE WHEN THE KNIFE IS
IN THE CENTER OF ITS STROKE.
IS
OF TORQUE IS EQUAL TO 90 LBS.
OF FORCE APPLIED TO A WRENCH 12" FROM
THE CENTER OF THE BOLT.
90
FT. LBS.
If there is gummy trash on the wear plates
and guards, first operate mower slowly and
pour water on the bar. Do not let it harden.
When preparing the mower for storage, the
following should be done:
2.
The height of the swath divider on the outer
shoe may be adjusted by bolting its forward
end to any of the three holes, point A, Figure
26, in the swathboard. This adjustment should
be set depending on the height of the crop
being cut so the crop is most effectively pushed
aside, leaving a path for the inner shoe on the
next round.
The tension on the swathboard mounting
STORING
1.
SWATH-BOARD
Lubricate the mower completely and run
slowly for a few minutes.
Loosen the drive
belt.
spring, point B, Figure 6, should be set so that
the rods will deflect easily when an obstruction
is hit.
It should be tight enough, however, so
that the rods will not move around when the
mower
Remove
the knife from the cutter bar. Covgood rust preventive and
er knife with a
SAFE PLACE.
store in a
4.
Inspect for
worn and broken
with genuine
5.
parts. Replace
Holland service parts.
mower and
Clean the
retouch the bare or
Holland touch-up
enamel. Your New Holland dealer has selfspraying cans of New Holland red or
yellow.
rusted
6.
New
parts with
Remove
place
in
weather.
mower from the tractor and
dry place not exposed to the
the
a
New
being transported.
The grass rods can be bent to help get a
division between swaths in unusual
crop conditions.
cleaner
3.
is
ADJUSTMENT
& MAINTENANCE
CUTTER BAR
The cutter bar of the
mower corresponds
to
multiple set of shears. Just as with hand
shears the opposing edges (the knife section
and ledger surface) must be sharp and contact
each other if a smooth, clean cutting action is
a
to result.
in
The knife should fit in the cutter bar as shown
Figure 27. The following sections describe
means
the
of achieving this
fit.
90% OF MOWER PROBLEMS ARE A RESULT
OF IMPROPER ADJUSTMENT AND LACK OF
MAINTENANCE OF THE CUTTER BAR.
KNIFE
Before installing a knife be sure all sections
and properly sharpened. Figure 27
shows properly sharpened sections. Inspect for
wear on the knife head and be sure the rivets
are tight
are tight.
Inspect the knife back and
remove any bends
—
these will result in poor cutting
action and excessive wear. Failure of the knife
head bushing can be due to a bent knife head.
The knife head area must be perfectly straight.
or twists
TIGHTEN KNIFE HEAD BOLT TO 85-90
LBS. TORQUE.
It
is
desirable to use a "set" of knives,
FT.
in ro-
have uniform wear on each until they
are discarded. Setting the parts on the cutter
bar to one knife will then result in a proper
"fit" on the remaining knives.
tation, to
GUARD ALIGNMENT
very important operation. A new knife or a straight one not badly
worn should be used in aligning the guards.
Guard alignment
is
a
Worn wear
replaced to
plates
should
be adjusted or
take up wear on the knife back
down, by striking at the thickest part in front
of the ledger surface starting at the inner shoe.
Then set the low guards up to secure the knife
ledger surface relationship shown in Figure 27.
Tighten guard bolts before and after setting the
and reduce play of the knife back in the neck
of the guards as shown in Figure 27. In setting
the wear plates ahead, be sure there is enough
clearance in front of the sections to keep from
striking the guards. The front edges of all wear
plates should be in line to give the knife back
guard.
a straight
Insert the knife
and
first
set the high guards
Disregard the alignment of the points of the
guards, but keep them well pointed. Straighten
the guard wings, if necessary, so they are parallel to the knife back.
KNIFE CUPS
The knife hold down
WORN OR
DULL
clips
must be adjusted
so that they hold the knife sections down
against the ledger surfaces while mowing, but
allow the knife to move without binding. When
the knife clips are adjusted properly, the knife
Keep the guard lip well-raised above the
ledger plate to prevent binding of the knife.
REPLACE
bearing surface.
moved backward and forward through
without binding.
guards
the
can be
GUARDS PROMPT-
LY.
23
To adjust the field down clips disconnect the
drive from the knife head and remove the knife.
Adjust the
clip nearest the inner shoe and insert
the knife for testing. If the clip is too tight,
strike it on the flat section between the mounting bolts to raise it slightly. Continue the pro-
cedure
until all
dips are properly adjusted.
DRIVE BELT
The drive belt is properly adjusted when 25
pounds will deflect the belt lU", midway between the sheaves. See Figure 28.
FIGURE 29
Failure to maintain proper belt tension causes
STABILIZER OVER-CENTER LATCHES
excessive belt flop, poor cutting, and reduced
belt
The eye bolt in each latch should be adjusted
by means of the two VV‘ nuts so that the
handles snap firmly over-center. Shorten or
lengthen the eye bolt as necessary to remove
all lost motion.
See Figure 17.
life.
To adjust the belt, loosen pivot bolt A and
the jam nut on the adjusting J-bolt, Figure 28.
Tighten the J-bolt until the belt tension is correct. Lock the jam nut
the pivot bolt.
on the
J-bolt
and tighten
CUTTER BAR LEAD
The cutter bar should be at right angles to
the direction of travel, when mowing, for best
Adjust the two belt guides on the Model 451
The belt guide at C, Figure 28A should dear
the back of the belt by 'U" to Vs". Move the
performance and reduced wear. The outer end
at B, Figure 28A, to
obtain this clearance. The belt guard at A, Figure 28A, should be adjusted to dear the belt
of the cutter bar should be ahead of (lead) the
inner end, when the mower is stopped. Pressure from the crop and drag on the shoe run-
or sheave by
ners will push the outer
belt shield
up
or
down
to Vs".
back
when mowing,
end of the
cutter bar
the cutter bar
right angles to the direction of travel.
until
is
at
Lead is built into the cutter bar and mower.
Shims should be added to the FRONT of the
pushbar bearing, if bearing endplay has reduced the lead.
The Models 451 and 456 Mowers should
have 3-1/16" lead with the 7' cutter bar, and
3-15/16" lead with the 9' cutter bar. See
Figure
16.
FIGURE 28
FIGURE 28 A
24
GAG
LINKAGE
and mower
Set the tractor
tion
on
level
in
operating posi-
ground.
The stop on the gag quadrant should clear
the top of the push bar Vz- 5h" as shown at E,
Figure 16. Lengthen or shorten the gag linkage to obtain this clearance.
The adapter
should be used
bracket
when
shown
Use adapter bracket on
Figure
in
a 9' cutter bar
is
29
installed.
The lift cable should have 3 inches of slack
checked by a 50 lb. pull half way between the
gag quadrant and the cable pulley when the
cutter bar and frame are in the operating position.
Adjust the bolt to the proper notch in the
cable adjusting straps, C, Figure 16, to obtain
this adjustment.
this application only.
LIFT
LIFT
SPRING
-
Tighten the
451 and 456
CABLE
-
MOWERS
lift
451
MOWER
Adjust the length of the
lift
the cutter bar above the ground
plete mower is raised.
-
456
MOWER
With the cutter bar down on level ground
and the lift cylinder completely retracted, the
lift cable can be checked for the right
amount
of slack by pulling up on it at a point midway
between the cable end at the lift quadrant and
the cable guide pulley, and measuring the deflection at this point. With an upward pull of
50 pounds, this deflection should be approximately 8". Adjustment is made the same as
on the 451 mower. The hitch height should be
about 15" when this adjustment is made.
spring bolt until the inner
shoe weight is about 90-100 lbs. and the outer
shoe about 20-35 lbs. See Figure 23.
LIFT
CABLE
cable to raise
the com-
when
BEARING ADJUSTMENT
CRANKSHAFT BEARINGS
The following procedure is suggested to
periodically adjust the crankshaft tapered roller
bearings, or when resetting them after repacking with grease.
a.
Remove
belt,
the lower belt guard, the drive
and the lower drive sheave.
b.
Detach the knife head to allow the crankshaft to turn freely.
c.
Tighten the slotted nut. Figure 30, until 2
to 6 in. lbs. of torque is required to turn
the crankshaft.
d.
Replace the drive sheave, aligning the roll
pin, Figure 30, in the hub of the sheave
with one of the slots in the slotted nut.
Replace the large flat washer and the Vz‘
grade 5 capscrew on the end of the crank-
^3553
shaft.
Torque
this
capscrew
to
95-100
FIGURE 30
IMPORTANT: MAKE SURE THE SPLINED
SHAFT AND THE BORE OF THE CRANK SHAFT
SHEAVE ARE CLEAN BEFORE INSTALLING THE
SHEAVE ON THE SHAFT. INSTALL THE 39856
WASHER ON THE Vs" x 114" GRADE 5 FINE
THREAD CAPSCREW AND TIGHTEN THE BOLT
ft.
TO 95-100 FT.
SHEAVE WITH
TORQUE, THEN RAP THE
RETIGHTEN
THE BOLT. REPEAT THIS UNTIL THE BOLT CAN
NO LONGER BE TURNED BY 95-100 FT. LBS OF
TORQUE.
the sheave next to the hub with
a heavy hammer to assure proper seating
of the splines and retighten the capscrew
to stated torque. Repeat this sequence
twice. This capscrew and the flat washer
lbs. Strike
FT. LBS. OF TORQUE IS EQUAL TO 100
OF FORCE APPLIED TO A WRENCH 12"
FROM THE CENTER OF THE BOLT.
100
are special hardware and should only be
replaced with New Holland Service Parts
in
the event of loss or
LBS.
A HAMMER AND
LBS.
damage.
Replace the belt and guard.
25
I
BEARING ADJUSTING NUT
DUST CAP
PIVOT LINK
COTTER
PIN
CONNECTING ROD
39856 SPECIAL WASHER
t
FRONT SUPPORT PLATE
A-KNIFE HEAD BOLT
FRONT DRIVE PLATE
SERVICING OF SICKLE DRIVE BEARINGS
To service the sickle drive area remove the
cutter bar
1
.
2.
3.
assembly from the
mower
FIGURE 30 A
frame.
Loosen the drive belt tension and remove
the belt, the inner shoe, and clevis pin M,
Figure 30A.
Remove two bolts H, Figure 16, and cotter
pin (and washer) indicated in Figure 30A.
4.
Remove
the front support plate by removing nuts B and C, Figure 30A. Then loosen
the four bolts K, Figure 30A, so that the
support plate can be removed from studs
5.
Install notched nut G and tighten to 10 footpounds and then loosen to align the cotter
6.
Attach the front drive plate and install nuts
D and E. Tighten nuts to 100 foot-pounds.
Be sure the adjusting nuts do not turn
when tightening nuts D and E.
7.
Place a spacer on studs C as indicated by
Figure 30A. Attach the front support plate
To service an individual pivot link bearing
remove the
D and
nuts
by removing
Then remove the respective
front drive plate
E.
bearing adjusting nuts.
5.
The crank connecting rod may then be removed by removing cotter pin, notched
nut G and the adjusting nut from stud E.
6.
Remove
nuts
pin hole.
H and move bearing mount-
ing pin forward for removal.
To assemble:
1.
2.
8.
Install the two pivot link bearing pins into
the rear support housing and secure with
nuts H, by tightening to 100 foot pounds.
With the bearings
the
G
with cotter pin.
I
and install nuts B and C. Tighten nuts C
100 foot-pounds.
Tighten four bolts K (cutter bar to rear sup-
port housing) to 100-foot-pounds. Remove
the runner for better access to bolts K for
proper tightening.
Place dust caps on pivot link pins C and on
the rear drive plate studs D and E. Also
install
Secure nut
to
9.
in
two pivot
the respective links,
links
Reassemble the cutter bar assembly
mower frame and
place larger dust cap on the crank pin G.
3.
t
the adjusting nuts to 30 foot-pounds, then
BACK OFF the adjusting nuts two flats or
1/ 3 of a turn.
C.
4.
BE SURE LUBE FITTINGS ARE
POSITIONED TO BE ACCESSIBLE.
Install a dust cap over ALL link and connecting rod bearings. Then intall an adjusting nut on studs C, D, and E. Tighten
necting rod.
and crank con26
to the
replace the drive belt.
f.-;
MOWER CONDITIONER
451
UPPER DRIVE BEARINGS
The upper drive tapered
be adjusted as follows:
HITCH INSTALLATION
roller
a.
Relieve the belt tension.
b.
Remove the cotter pin
versal joint, Figure 32.
bearings can
inside of the uni-
c.
Turn the slotted nut, Figure 32 with a box
end wrench until it takes an additional
2 to 6 in. lbs. of torque to rotate the sheave
assembly.
d.
Replace the cotter pin on shaft and readjust
the belt tension.
HITCH SUPPORT ASSEMBLY
Remove the bolts and strap at A, Figure 32 if
necessary and the %" capscrew at B. Discard
the heavy flat washer originally used at B, but
keep all the space washers in place.
Bolt the hitch support to the
mower with the
diameter capscrew at B, Figure 32. Install
two V2 " x 1!4" capscrews at X, Figure 33. Install three W' x 3%" grade 5 capscrews
and
flat washers at A, Figure 32, being sure to use
the two 1-13/16" spacers in the end holes
shown
MUST
at C.
WHEN
J
AND
K,
FIGURE 32,
WITH THE HEADS DOWN
USING A CONDITIONER HITCH. Use the
on
strap
BOLTS AT
BE INSTALLED
member
bolts J
is
and
set in the
K, Figure 32,
if
the cross
narrow wheel tread po-
sition.
LIFT
BAR
Attach the two adjusting straps to lift the bar
with two %" x 214 " capscrews and four flat
washers
at
D,
Figure 32.
DO NOT TIGHTEN
THESE BOLTS AT THIS TIME.
451
Attach the connector weld assembly to the
"
with a V2 x 114" capscrew
E, Figure 32. Attach the front
end of the lift bar to the left side of the connector weld assembly at F, Figure 32, with a
mower as shown
and LOCK NUT at
MOWER CONDITIONER
HITCH BUNDLE (#83855)
1
.
2.
3.
4.
V2 x 2%" capscrew, 1 14" long spacer and flat
washer. The lift bar goes on the left side of the
parking stand in the narrow tread position and
on the right side in the center and wide po-
Assembly
Weld Assembly
Lift Bar Assembly
Hardware Kit
Hitch Support
Hitch
sitions.
I
I
FIGURE 32
27
V
\\
FIGURE 33
HITCH WELD ASSEMBLY
Attach the hitch weld assembly to the hitch
support as shown with two V2 " x 2 %" capscrews and two spacers 1-11/16" long, at C,
FIGURE 34
456 MOWER CONDITIONER
HITCH BUNDLE - (#97956)
1. Hitch W. A.
2. Hardware Kit
Figure 32.
Install
the
pivot block
in
the post on the
weld assembly. Figure 32, with a 2-1/16"
"
spacer and a V2 x 3" capscrew at G.
hitch
Attach the lift bar to the pivot block at H,
Figure 32, with 114" spacer and a V2" x 21/2 "
capscrew. NOTE: USE THE END HOLES IN THE
WHEN THE MOWER IS SET FOR
NARROW WHEEL TREAD POSITION. USE
FRONT HOLES WHEN THE MOWER IS SET
STRAPS
It
at the hitch pin hole be NO MORE
17 inches above the ground when the
mower with conditioner is attached to the tractor. Use the large size tires such as 7:50 x 14
or 6:70 x 15 so that the conditioner hitch will
be 13 to 17 inches ABOVE THE GROUND when
LIMIT HEIGHT OF TRACTOR HYDRAULIC LIFT
SO THAT HITCH POINT "Y" DOES NOT RAISE
HIGHER THAN 22" WHEN CUTTER BAR IS
mower
is
attached to the tractor.
The conditioner P.T.O. shaft should be disconnected from the mower when cutting the first
swath. The cutter bar should be carried in the
RAISED. See Figure 33.
all
important that the top of the tractor
than
THE
THE
FOR
WIDER WHEEL TREAD POSITIONS.
Tighten
is
drawbar
nuts and bolts securely.
transport position
when
conditioning the back
swath.
A bumper
is
incorporated
in
the conditioner
on the 456 to prevent the conditioner U
joints from locking in the event the units jack
knife when the mower is backed up to clear the
INSTALLATION OF THE CONDITIONER HITCH
ON THE MODEL 456 MOWER
Remove the %" capscrew at A, Figure 35,
and discard the flat washer with the 34" diameter hole. Keep the space washers on the
shaft. Remove the two original bolts at B. Set
the hitch in place and install three 1/2" x 3 34"
grade 5 capscrews at A. Install two V2 " x U4"
capscrews at C. YOU MUST TIGHTEN THESE
BOLTS SECURELY. Remove the jack from the
cross member. Figure 19. Bolt the jack to the
hitch
cutter bar.
Care must be taken to avoid locking the conditioner P.T.O. universal joints
when
operating
Model 451 Mower when pulling a conditioner. The 451 does not have a bumper.
the
conditioner hitch, Figure 35.
28
t
FIGURE 35
A
may be turned while pulling
and when doing this the cutter
square corner
a conditioner
bar may strike the right conditioner
is normal.
tire
which
CAUTION: Most conditioners will wrap on
the lower roll if the mower is backed up more
than 3 feet when clearing the cutter bar. If it is
necessary to back up more than 3 feet to clear
the cutter bar, etc., shut off the P.T.O..
FIGURE 35
29
GENERAL SPECIFICATIONS
the following information, left and right are determined
facing the direction of travel.
In
by standing
at
the
rear of
the
mower and
ALL SPECIFICATIONS INCLUDE 7 FT. CUTTERBAR
(9 FT. CUTTERBAR ALSO AVAILABLE)
1.
Knife Speed:
800
cycles per minute, or
2.
Knife Stroke:
3%
inches.
3.
Knife Register: Maintained at any cutting angle.
4.
Mowing Speed: Up
5.
Guards: Mecfium-Carbon Forged Steel Double Guards.
6.
Cutter-bar Break-Away
7.
Mower
Drive:
1600
strokes per minute.
to 8 m.p.h.
Toggle linkage and
;
latch requires
no guiding device.
Heavy duty V-belt prevents overload to cutting components, remains engaged when mower is in break-away position. Driven sheave is adjustable
for PTO speeds from 540 to 720 rpm.
Is set at the factory for 640 rpm
PTO.
10.
Drive Bearings: Both the upper and lower drive shafts run on tapered roller bearings. The
connecting link and pivot link in the sickle drive operate on tapered roller
bearings. Knife head uses a rubber torsion bushing.
8.
P.T.O. Assembly: The universal joints are
rally shielded.
9.
Swath
L12N with needle
bearings; the drive
is
integ-
Divider: Spring steel dual fingered.
Cutting Width:
T
Cutterbar
9'
Cutterbar
-
7'3"
8'9"
MODEL
Weight
.
592
MODEL 456
451
718
lbs.
lbs.
Overall Dimensions
Length
Width
Width
.
.
in
Transport
in
Operation
.
.
.
.
.
.
46%"
73%"
90"
149"
159"
&7W
Heigfrt in Transport
73%"
(plus lifting range of
67V2" (6.40 x 15
tires)
tractor)
Height
in
39"
Operation
Capacity
39" (6.40 x
4 to 7 acres per hour
2 to 3
.
.
3 point Hitch
Category
1
—
and
plow
tractor
most
ASAE swinging drawbar
Remote control hydraulic
cylinder necessary.
Power-Take-Off Shaft —
Needle bearing yokes and
integral shielding on shaft.
Tire
Size
6:40 x 15
6:70 x 15
7:50 x 14
30
tires)
tractors.
Fits
II
5
4 to 7 acres per hour
Power requirement
Hitch
1
Practical
in
HOLLAND
design
•
dependable
in
action