LELY HIBISCUS 765 SD Vario User manual

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www.lely.com
Lely Industries N.V.
765 SD / 765 SD Vario
LELY HIBISCUS
Operator’s manual
R-H003.1002VT

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OPERATOR’S MANUAL
LELY HIBISCUS
765 SD / 765 SD Vario
Rh0031002en-tp.fm
English
HIBISCUS is a registered trademark. The right of exclusive use belongs to the companies of the LELY Group.
©2010. All rights reserved. Nothing from this publication may be reproduced and/or published by printing,
photocopying, microfilm or any other way without the prior written permission of LELY INDUSTRIES N.V.

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TABLE OF CONTENTS .......................................................................................................page
PREFACE .........................................................................................................................5
WARRANTY CONDITIONS .............................................................................................5
TYPE AND SERIAL NUMBER OF YOUR MACHINE ........................................................5
SAFETY INSTRUCTIONS..................................................................................................6
EXPLANATION OF SAFETY DECALS ON THE MACHINE ...............................................7
1 INTRODUCTION..............................................................................................................8
2 LINKAGE TO THE TRACTOR...........................................................................................9
3 TRANSPORT...................................................................................................................10
4 MACHINE ADJUSTMENTS.............................................................................................12
4.1 Procedure............................................................................................................12
4.2 Swath width........................................................................................................12
4.3 Working height ..................................................................................................13
4.4 Cam track adjustment ........................................................................................13
5 OPERATING THE HIBISCUS ...........................................................................................14
5.1 General instructions ...........................................................................................14
5.2 Forward speed and PTO speed ..........................................................................14
6 DISMOUNTING FROM THE TRACTOR ..........................................................................15
7 MAINTENANCE .............................................................................................................16
7.1 Maintenance after operation ............................................................................16
7.2 Lubrication..........................................................................................................16
7.3 Periodic maintenance.........................................................................................18
7.4 Changing oil in gearbox ....................................................................................19
Supplements:
A DELIVERY OF 1 OR 2 SWATHS (Vario) .........................................................................20
B HYDRAULIC DIAGRAM .................................................................................................21
B.1 HIBISCUS 765 SD .................................................................................................21
B.2 HIBISCUS 765 SD Vario .......................................................................................22
C OPTIONAL EXTRAS .......................................................................................................23
D TECHNICAL DETAILS .....................................................................................................24

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PREFACE
This Operator’s Manual is meant for personnel who operate the
machine and are responsible for its daily maintenance.
Kindly read this entire manual prior to starting work.
Instructions relating to your safety and/or that of others are
marked in the margin by a warning triangle containing an
exclamation mark. Always observe these instructions with
particular care and attention.
Instructions which may lead to serious material damage in
case of non-compliance or incorrect use are indicated in the
margin with an exclamation mark.
The machine described in this manual may contain components that
do not form part of the standard equipment but are available as
optional extras.
This is not indicated in all cases since standard specifications may
differ from country to country.
Furthermore, machines and optional extras may be adapted to
specific regional conditions and are also subject to permanent
research and innovation.
For this reason, the specifications of your machine may not be
consistent with the pictures in this manual.
WARRANTY CONDITIONS
For those parts which fail under normal operating conditions, the
factory will make replacement parts available, free of charge, for a
period of 12 (twelve) months from the date of purchase.
The warranty will not apply if the instructions mentioned in this
manual have not been followed, or if they have not been followed
completely or correctly.
Nor will the warranty apply if you or third parties modify the
machine without our foreknowledge and/or authorisation.
TYPE AND SERIAL NUMBER OF YOUR
MACHINE
The type/serial number plate is fitted to the front of the drawbar
above the pivot point of the three-point hitch.
Please specify the type and serial number of your machine in any
correspondence and when ordering spare parts.
Enter these numbers in the box below.
!
Type number
Serial number

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SAFETY INSTRUCTIONS
- Use the machine only for the purpose for which it was designed.
- Follow all prevailing safety regulations, including those laid down
in this manual and indicated on the machine.
- Operate this machine in a safe manner.
- The machine may only be operated by authorised persons.
- Be alert and observe all safety precautions.
- Ensure that all safety guards and protection devices are in place.
- Keep out of reach of moving parts.
- Stop the engine, PTO and moving parts before adjusting, cleaning
or lubricating the machine.
- Ensure that no-one is within the danger zone while the machine
is in operation, and ensure that people are kept well away from
the machine. This is especially important when working along
roads and near or on fields that are accessible to the public.
- Always use a tractor with a cab.
- Clear the field of any objects that could be thrown up by the
machine.
- Observe prevailing legislation for public road transport.
- Use flashing lights or other safety signs, when required.
- Do not stand on the machine.
- Use genuine LELY parts only.
- Depressurise the hydraulic systems before starting work on them
and/or before coupling/uncoupling hydraulic hoses.
- Use protective clothing, gloves, safety glasses and/or ear
protectors, if required.
- Clean the safety decals regularly so that they can be read at all
times.

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EXPLANATION OF SAFETY DECALS ON THE
MACHINE
-Read the operator’s manual carefully before operating the
machine. Observe instructions and safety rules during operation.
-Danger: folding parts.
Keep away from the folding areas of parts.
-Danger: risk of being trapped by moving parts!
Keep outside the movement range of parts for as long as they
have not been secured or prevented from moving in another
manner.
-Danger! Moving parts.
Stay clear of rotating machine parts.
- Ensure the tractor PTO speed never exceeds 540 r.p.m.
-Danger: moving parts!
Read the operating instructions of the PTO shaft.
Never use a PTO shaft without any protection.

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1 INTRODUCTION
The LELY HIBISCUS 765 SD (fig.1) is a pull-type, twin-rotor cam rake
for side delivery. The rake is equipped with 2 rotors with 13 tine
arms, each equipped with 4 double tines.
The tines provide a clean sweep and move the grass to the left side
in an airy swath.
The rotors of the HIBISCUS 765 SD rake are fitted to the carriage by
means of a 3-D system (fig. 2), allowing them to follow ground
contours independently of the carriage.
The rotors of the HIBISCUS 765 SD rake have a modular construction
so that any repairs to a tine arm shaft can be carried out quickly and
cost-effectively.
The 4-wheel assembly ensures excellent raking when working in
undulating fields as well.
The transport wheels of the machine are fitted with wheel steering
as standard, which ensures that the machine follows the tractor in
the same tracks.
The HIBISCUS 765 SD Vario rake has the following additional
features that allow it to be used for the most diverse applications:
The tine arms can be removed from the rotors. The combination of
the storage rack for removed tine arms and the foldable safety
frame around the rotors allows the height of the machine to be
lowered for transport or storage purposes.
The steering system of the HIBISCUS 765 SD Vario rake is equipped
with an adjustment ram, which allows the overlap between the
rotors to be increased (fig. 3).
The machine can therefore operate in a narrower working position
with large crop yields.
By rotating the steering plate and the adjustment ram, the HIBISCUS
765 SD Vario rake can produce one large swath or two small ones.
The transport wheel assembly can be adjusted hydraulically from the
tractor cabin, thereby eliminating the overlap between both rotors.
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2
3

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2 LINKAGE TO THE TRACTOR
Link the machine to the tractor as follows:
- Adjust the tractor’s three-point-hitch arms at an equal height.
- Fit the lower arms to the linkage pins (cat II) of the headstock (fig.
4)..
- Lift the drawbar slightly so that it is horizontal. Maintain this
height adjustment of the tractor lift during operation and
transport.
- Place the parking jacks in the raised position.
- Secure the tractor’s lower arms with stabilisation chains or rods to
eliminate any sideways movements.
- Place the wheel wedges in the supports on the front of the
machine.
- Check if the PTO shaft telescopes smoothly.
- Fit the PTO shaft to the tractor PTO.
During first assembly or when using another tractor, check
the minimum and maximum overlap of the PTO shaft halves
in all positions*.
- Fit the safety chain of the protection tube to a rigid part of
the tractor.
- Connect the thick (3/8”) hydraulic hose to a single-acting hydraulic
tractor valve with floating position.
Permitted maximum oil pressure: 21.0 MPa (210 bar).
- Connect the two thin (1/4”) hydraulic hoses for folding up the
machine to a double-acting hydraulic tractor valve.
Permitted maximum oil pressure: 21.0 MPa (210 bar).
Only HIBISCUS 765 SD Vario rake:
- Connect the two thin (1/4”) hydraulic hoses with the white
marking for operating the steering system to a double-acting
hydraulic tractor valve.
Permitted maximum oil pressure: 21.0 MPa (210 bar).
- Connect the thin (1/4”) hydraulic hose with the blue marking to a
depressurised return connection on the tractor.
- Place the end of the operating cord of the locking hooks in the
tractor cab.
- Insert the plug of the lighting cable into the tractor socket
and check if the lighting is operating correctly.
*. Consult the instructions supplied with the PTO shaft
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3 TRANSPORT
The HIBISCUS rake can be transported by the tractor after it has been
adjusted to the transport position. The transport width is 2.45 m.
Adjust the machine to the transport position as follows:
The tine arms can be removed and the safety guards can be folded
up in order to lower the transport height of the HIBISCUS 765 SD
Vario rake to 3.20 m.
- Fold up the safety guards and secure them by means of the locking
pin (fig. 5).
- Remove the outermost 5 tine arms from each rotor and stow them
away in the holder on top of the rotor (fig. 6).
- Operate the tractor's hydraulic valve to adjust the transport
wheels to such a position that the machine follows directly behind
the tractor.
- Connect the ball valve of the adjustment ram of the wheel
steering at the rear of the machine.
- Operate the single-acting tractor valve to adjust the machine to
the headland position.
- Operate the tractor's double-acting valve to fold the machine
further towards the transport position.
Continue operating the valve until the swath curtain has also
retracted completely.
- Check whether the support frames have been secured with the
locking hooks (fig. 7).
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6
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- Place the protective caps on the points of the tines protruding
outwards (fig. 8).
- Use all lighting and warning signals required by law (or
other regulations prescribed by the authorities).
- For transport on public roads, ensure that the front axle
weight is sufficient (fit front weights, if necessary) and
that the permitted maximum rear axle weight is not
exceeded.
The machine is now ready for transport.
Never allow the PTO shaft to rotate when the machine is in
the transport position.
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4 MACHINE ADJUSTMENTS
Ensure that no-one is near the machine when it is switched
from the transport position to the working position.
Put the machine into the working position as follows:
- Remove the protective caps from the tines and stow them away at
the front of the machine (fig. 9).
- Pull the locking hooks of the support frames upwards and lower
the machine carefully using the rams up to the headland position.
Continue operating the valve until the swath curtain has also
extended completely.
• Lower the rotors onto the ground carefully by operating the
tractor's single-acting valve.
Only HIBISCUS 765 SD Vario rake:
- Place the tine arms on the rotor (fig. 10).
- Unfold the safety guards and secure them by means of the locking
pin.
4.1 Procedure
The HIBISCUS 765 SD rake can only rake with the full working width,
during which a single swath is produced.
The HIBISCUS 765 SD Vario rake can be used in three ways:
1 Raking with the full working width, during which a single swath
is laid;
2 Raking with a narrower working width, during which a single
swath is laid;
3 Raking with the full working width, during which two small
swaths are laid;
- Connect the ball valve at the rear of the machine in order to use
the adjustment ram of the wheel steering.
- Adjust the desired working procedure using the ram of the wheel
steering. To lay down two small swaths, the steering plate of the
ram must be reversed (this is explained in supplement A).
4.2 Swath width
- The swath curtain automatically slides towards the outermost
position when the machine is folded out.
Operate the double-acting valve again if the ram has not
extended completely.
- The outermost position of the swath curtain can be adjusted by
attaching the end of the ram in one of the six holes of the fixation
plate (fig. 11).
The adjustment depends on the amount of crop and the adjusted
working width.
Select a position that allows the crop to flow through between the
rotor and the swath curtain properly and prevents the formation
of heaps.
NB: if one of the three innermost positions has been selected, the
safety guard will be blocked from folding up.
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11

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- During the delivery of two swaths (HIBISCUS 765 SD Vario), a
swath curtain can be attached to the A frame of the left rotor in
order to limit the swath of the right rotor (fig. 12).
4.3 Working height
- Adjust the rotor in a horizontal or slightly oblique (forward)
position by means of the height adjustment system of the front
swivel wheels.
If the required height cannot be obtained with the help of the wind
handle, the wheels can be adjusted to 6 height positions.
- Adjust the working height roughly by positioning the swivel
wheels (A, fig. 13).
The end piece can be fitted in the other one of the two parallel
rows of holes, which reduces the adjustment by half. As a result,
the rotors on the left side of the machine can be adjusted a half-
position lower, which allows a greater crop volume to be handled.
- Adjust the correct height using wind handle B. The tines should
only just touch the ground.
The wind handle is easier to operate when the rotors are lifted
slightly.
4.4 Cam track adjustment
The cam track determines the rise and descent of the tines fitted to
the tine arms. Rise and descent moments can be changed by
adjusting this system.
Correct adjustment depends upon crop/terrain conditions and
forward speed. The cam track can be adjusted by placing the
adjustment strip (fig. 14) in one of the holes.
12
13
AB
14

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5 OPERATING THE HIBISCUS
• Ensure no-one is near the machine at the moment the
PTO is engaged.
• Do not allow anyone to come within a 25-m radius of the
machine while it is operational.
• Stop the tractor engine before leaving the tractor cab.
• The safety guards and the swath curtain are essential
protective components of the machine. Consequently,
only operate the rake if these components have been
duly fitted.
5.1 General instructions
To enable turning on headlands, the rotors can be lifted (approx. 60
cm).
To do so, actuate the single-acting valves of the tractor.
- Lift the rotors up to the headland position.
- Engage the PTO at the lowest possible engine r.p.m.
- Increase the engine speed.
- Drive forward.
Never drive the machine through the crop while the rotors are on
the ground and are not rotating. This may damage the tines and
tine arms.
- Lower the machine into the crop.
- Place the single-acting valve of the tractor in the floating position;
the rams must telescope smoothly throughout the operation.
5.2 Forward speed and PTO speed
Select a forward speed and PTO output (450-500 r.p.m., max. 540
r.p.m.), which will ensure a good, clean swath.
If the rotor speed is too high, there is a risk that the crop will not be
released soon enough by the tines. As a result, lumps of material will
be scattered behind the machine. If so, reduce the PTO speed.
Lower the forward speed when a clutch is engaged due to overload.

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6 DISMOUNTING FROM THE TRACTOR
The machine can be dismounted from the tractor both in the
working and in the transport position.
Always place the machine on hard, even ground.
- Place the parking jacks in the bottom position.
- Place the wedges against the transport wheels in order to prevent
the machine from rolling away accidentally.
- Lower the tractor hydraulics until the parking jacks rest on the
ground.
- Switch off the tractor engine.
- Disengage the PTO shaft from the tractor PTO.
- Place the PTO shaft in the hook (fig. 15).
- Depressurise the hydraulic system and disconnect the hydraulic
hoses.
- Place the dust caps on the plugs and hang the plugs on the
supports on the drawbar (fig. 15).
- Remove the lighting plug from the tractor socket.
- Remove the control cord for the locking hooks from the tractor
cab.
- Disconnect the lower arms from the machine.
15

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7 MAINTENANCE
• Correct machine servicing is vital for ensuring reliable
and safe operation.
7.1 Maintenance after operation
- Clean the machine thoroughly.
- Check the tines and tine arms for tightness or any damage.
- Grease the machine with an anti-corrosion agent.
Pay special attention to the tines. Smooth tines without any rust
stimulate an unhampered crop flow.
- Grease the piston rods with an anti-corrosion agent if the machine
will not be used for a long period.
Remove the agent before using the machine again. If this is not
done, the seals of the rams may be damaged when the anti-
corrosion agent hardens.
7.2 Lubrication
All lubrication points of the machine can be greased with a
biodegradable grease (Total Biomultis SEP2), unless stated
otherwise.
- PTO shafts must be greased every 8 working hours via the grease
nipples on the cross assemblies, protection tubes and slip clutch
(fig. 16).
- Grease the profiled tubes of the PTO shaft every 8 working hours
(fig. 16).
- Gears in the gearbox over the rotor must be greased every 8
working hours (fig. 17). While greasing, keep turning the rotor bit
by bit to ensure the grease is distributed effectively all over the
gears.
- Grease the bearing blocks of the PTO extensions every 8 working
hours (fig. 18).
!
16
8 h
8 h
17
8 h
18
8 h

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- Apply grease to all nipples on the machine every forty working
hours, as depicted in figure 19.
- Grease or lubricate all remaining pivot points with a high-quality
grease or oil every 40 working hours.
19
40 h
4x, L+R
L+R L+R
L+R
L+R

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7.3 Periodic maintenance
Periodic maintenance must be carried out:
• at the start of the raking season;
• before prolonged storage of the machine;
• when the machine is used extensively during the season.
- Grease all points of the machine listed in § 7.2 “Lubrication”.
- Grease the spring-loaded locking pins of the yoke lock of the PTO
shaft.
- Check if the PTO shaft telescopes smoothly.
A damaged PTO shaft may cause excessive wear and tear to the
machine and tractor.
- Grease the cam track in the rotor every 1,000 hectares or once a
year with a high-quality grease (Molykote BR2Plus) via the
lubrication point on the tine arm axle.
- Grease the bearings of the transport wheel axles. To do so, remove
the caps from the wheel hubs in order to gain access to the
bearings.
- Check the machine for any damage and flaws. Repair or replace
damaged components.
- Check the hydraulic system for any leaks and damaged
components. Repair or replace damaged components.
- Check the gearboxes for any oil leaks and the oil level.
(Topping up/Changing oil: see § 7.4.)
- Check the tyre pressure (fig. 20).
- Check all bolts and nuts for tightness.
Pay particular attention to the bolts that secure the segments in
the rotors (fig. 21).
Tighten loose bolts/nuts to the torques specified below.
Tighten the wheel nuts that attach the transport wheels to the
axles with a torque of 270 Nm (27 kgm).
M6 M8 M10 M12 M14 M16 M20 M24
Nm 10 25 50 85 135 215 410 710
kgm 1.0 2.5 5.0 8.5 13.5 21.5 41.0 71.0
20
300 kPa (3 bar) 190 kPa (1.9 bar)
21