Boom Features - Goldacres Crop Cruiser G6 Operator's Manual

Boom Features

Centre Section
The TriTech centre section is made up of two
components, the Paralift rear and the boom centre
section. The two are held together by delta links.
These links allow the boom to be suspended in
order to provide roll and yaw suspension.
Roll suspension is when the boom pitches up and
down at the tips. Yaw suspension is when the boom
moves fore and aft at the tips. If the boom did not
feature yaw suspension there would be excessive
stresses exerted on the booms and centre section
when cornering or corrections of line are made. The
yaw suspension allows the chassis of the sprayer to
move left and right without any movement being
transferred to the boom. The Paralift rear will move
with the sprayer while the boom centre section will
remain static or level as it rotates around the delta
links connecting it to the Paralift rear.
Two hydraulic cylinders with individual nitrogen filled
accumulators connected to each, centre and dampen
the yaw movement. The overall yaw travel is limited
by rubber bumpers mounted to the Paralift rear. If
the boom centre section yaws excessively the centre
section will contact these and cushion the travel by
collapsing the block. If the block collapses totally the
yaw travel will be stopped. If the boom is continually
yawed excessively this block will wear out and
require replacement.
Hydraulic Raise & Lower
The Paralift enables the boom to be raised and
lowered to maintain a consistent boom height above
the target.
Crop Cruiser feature a Paralift rear which uses
two hydraulic cylinders to perform the lift, while
also acting as a component providing the vertical
suspension. Each hydraulic cylinder has a nitrogen
charged accumulator which also assists in improving
the boom ride. The boom limit height switch allows
the operator to adjust the minimum ride height of
the boom. Boom maintenance information can be
found in the Chapter 10 'Lubrication & Maintenance'.
The hydraulic lift also enables the boom to be raised
prior to folding and then used to lower the boom
onto the boom rests.
100 - Chapter 9 - Boom
Hydraulic Fold
The Crop Cruiser booms have a hydraulic fold
feature, allows the boom to opened and closed from
within the cabin.
Hydraulic cylinders with flow dividers are used in
the folding operation of the boom. This ensures that
both sides of the boom are synchronised and open
and close together so that the weight distribution is
the same for both sides of the boom.
See Chapter 11 'Troubleshooting' for help with
calibrating the boom folding action.
Boom Balance
The boom suspension system causes the boom to
adopt the same plane as the spray tanker. If one
side is heavier than the other, the boom will tend to
hang lower on the heavy side, so both sides need to
be balanced for the boom ends to be of the same
height.
To achieve this, a boom drum weights can be
included on the boom and placed strategically so
that it compensates and balances the boom. The
boom can have more weight added and/or be
moved to balance the boom correctly.
Before adding any boom weights, it is advised
that the boom is adjusted correctly. As per the
instructions following in this chapter.
Boom Cables
Boom cables are a critical part of the Crop Cruiser
booms and it is important to ensure that boom
cables are correctly adjusted prior to operation.
Loose boom cables can cause boom damage by
allowing the outer boom section to hang out of
alignment or to "break away" too easily. This can
shorten the sprayers life by placing unnecessary
stresses on the boom, lift and chassis.
The cable tension can be checked by inspecting
the cable springs, Further information on boom
adjustment and alignment can be found in this
chapter.
Boom Protection Brackets
Stainless steel boom protectors are fitted on the
boom to protect the boom when resting on the
boom rests for transport. It is important to ensure
that the boom protection brackets are fitted
correctly.
G4.7, G5, G6 Crop Cruiser Operator's Manual MY19 - REV 0
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