McHale 691 Manual De Instrucciones página 7

Performing maintenance:
 Maintenance and repair work should always be carried out
in accordance with this manual and only by qualified
persons or your McHale dealer.
 Before working on this device, or altering any setting,
ensure that the tractor has definitely stopped moving, the
hand brake is applied, the engine is stopped, and the
ignition key is removed.
 Support machinery properly. Where possible always lower
the attachment or implement to the ground first. Do not
work under a machine that is solely supported by a jack.
Never support with props that may break or crumble under
a continuous load.
 Tie long hair behind your head. Do not wear a necktie,
necklace, scarf or loose clothing when you work near the
machine or moving parts. If these items were to get caught,
severe injury could result.
 Wear heavy gloves when working with sharp objects.
 Always wear clothing and safety equipment that is fit for the
job at hand. In the event of loud noises, wear suitable
protective hearing devices.
 In the event of any accident, emergency equipment should
be kept close at hand. A first aid kit and fire extinguisher,
along with emergency phone numbers, should always be
available to machine operators.
ENVIRONMENT: Never spill oil or grease on the
ground, never pour it down the drain, never discard it
where it can pollute the environment. Always take
waste materials to a recycling centre.
5. Attachment
 Ensure that the correct brackets are fitted to the bale
handler and follow the loader manufacturer's guidelines for
this process (quick attachment brackets can be ordered
separately). Ensure the bale handler is mounted securely
onto the loader before moving or operating.
 When fitting the bale handler to the tractor front-end loader
or telescopic handler you will need: U-bolts, nuts and two
½" male quick-release couplings, powered by a double-
acting 3rd service hydraulic supply.
CAUTION: The bale handler is designed to take
loads via the two rails on the rear of the main frame;
all brackets must be clamped or welded to these rails.
 When fitting brackets to the loader, ensure the bolt centres
are 250 mm. The loads multiply rapidly with centres less
than 200 mm.
 If the bale handler is to be fitted to an exceptionally wide
loader, it may be necessary to acquire a bridging frame and
attach it to the two rails.
6. Hydraulics
 The bale handler requires a double-acting 3rd service on
the loader or telescopic handler, which provides a minimum
hydraulic flow of 10 l/min at 150 bar pressure.
WARNING: Never exceed 200 bar hydraulic
pressure. If this device is to be used on machines
capable of generating over 200 bar, such as
telescopic loaders, your McHale dealer should be
contacted. Quote pressure relief kit KST00054.
CAUTION: Do not work on hydraulic systems unless
you are qualified to do so.
 Hydraulic oil under pressure can be dangerous. Stop the
tractor and remove the key before connecting/
disconnecting hoses and operate the controls to release
the pressure in the system. Never start the tractor engine
when hoses are open.
 Always ensure the system is not under pressure before
working on the machine. Oil under pressure can penetrate
the skin and cause injury.
 If any hoses are removed or replaced ensure they are
marked and re-installed to the correct position during re-
assembly.
McHale 691
 Check hoses regularly for signs of leakage or wear. Use a
piece of card when checking for leaks. Fine jets of
hydraulic fluid can penetrate the skin. Never use your
fingers or face to check for leaks. If in doubt always
replace. The recommended maximum working life of hoses
should not exceed 5 years.
 To check for hydraulic leaks, lift a bale 150 mm (6") off the
ground and level the bale handler. Leave the tractor/loader
running at idle rpm. If the bale handler/bale drops, check
for hydraulic leaks.
 Ensure that the tractor has clean, good quality, hydraulic/
universal oil to avoid problems later on. The hydraulic filters
on the tractor should be changed regularly, according to
manufacturer's service intervals. Avoid getting dirt into the
hydraulic couplings.
7. Machine lifting guidelines
 Use safe lifting gear of sufficient capacity for machine
assembly. All chains and slings used must always be
certified and in good condition.
WARNING: Never go under a suspended machine,
or attempt to try and stop it, if it is moving erratically.
Death or serious injury may result.
 Be observant of people and objects around the suspended
machine and do not allow the machine to impact heavily on
the ground after suspension or movement.
 Take care when lifting sharp objects. Leave the protective
cover on these objects until the machine is fully assembled.
To lift the machine:
1. Remove the protective plastic cover from the machine.
2. Using a suitably certified lifting sling, lift the machine by the
main-frame.
3. Take up the slack on the lifting chains and move it to the
desired location.
8. Machine re-assembly
Refer to document CLT00577 for re-assembly instructions for
this bale handler.
9. Operation
The 691 bale handler is a very compact device, allowing full
visibility of the bale at all times.
1. Crown the bale handler towards the ground.
2. Ensure that the arms are fully opened.
3. As you approach the bale, ensure that the bale handler is
in the centre of the bale.
4. Lower and approach the bale centrally until the main-frame
touches the end of the bale. Do not push forward as this
will damage the wrapping.
5. Lower the arms until they are level and then power them
closed and tilt back to carry the bale.
Stacking bales:
1. Aim the bale for the position required (this requires practice
and judgement) and use the bale and the frame to judge
the distance.
2. The rollers will rise as the arms are opened and the tractor
will also rise due to the decrease in weight on the tyres. To
allow for this, lower the bale handler as you withdraw from
the bale.
3. It is vital to watch the bales under the bale handler as you
lower it, to ensure the wrapping does not get damaged.
4. Wet bales should only be stacked 2 high to prevent
deformation of the bales on the ground. This deformation
can cause the wrapping to allow air into the bale. Dry bales
can be stacked 3 high, but watch the lower bale for
deformation.
Handling straw bales:
Straw bales are lighter and more square than silage bales and
as they are not wrapped, the rolling sleeves can be removed
from the bale handler.
1. When spiking the first bale, aim for the centre of the bale
ensuring the tines are fully open.
2. Aim higher for the second bale. This will lift the first bale
slightly, preventing it from being pushed along the ground.
3. When both bales are spiked, use the hydraulics to squeeze
the two bales together, as this holds them firmly in place.
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