Goldacres MY17-19 Operator's Manual page 61

Delta Boom Adjustment
Vertical Boom Alignment -
Unfolded Position
When the boom is in the working position, the inner
and outer boom should be level or slightly increasing
in height from the centre section to give a consistent
and even spray application height. A new boom
may be susceptible to stretching or sagging as the
components are worn in. Several adjustment may be
required in the first 12 months of operation until the
boom settles.
INNER BOOMS
• The boom centre section must be level with the
chassis before any boom adjustments are made.
The centre of the centre section should line up
with the centre of the Paralift when look from
the rear. This can be done by either shortening or
lengthening the centre section adjuster bolt at the
top delta links, or by adding weight discs to the
cable drums.
• The inner booms must be adjusted first so
they are the same height as the centre section
or slightly increasing in height from the centre
section (to allow for boom stretch) .These
adjustments are made by lengthening or
shortening the tilt adjusters on the tilt cylinder..
• To lengthen or shorten the tilt adjusters, the
weight of both the booms will need to be
supported.
• When any adjustments are completed. Ensure the
lock nuts are tight.
Hydraulic Tilt Adjustment
Standard Tilt Adjustment
Prairie 1500-3000L Operator's Manual MY17-MY19 - REV 0
OUTER BOOMS
• The height of the outer booms in the working
position are adjusted by adding or removing shims
at the cable drum.
• The cable drum mounts are assembled in
manufacturing with 6-7 shims at the upper and
lower bearing blocks.
• If the outer boom hangs lower than the inner
boom, remove shims from the upper mount until
the booms are level. If the outer boom is too
high remove shims from the lower bearing block.
Retension the retaining bolts to 65 Nm when all
adjustments are complete.
• The boom cables may need to be loosened to
enable easier removal of the shims.
For 18-24 m booms:
1 shim added = 5-15 mm change at boom end
A Tilt adjustment
(use to raise/lower inner boom)
Tilt adjustment lock nut
B
A Tilt adjustment
(use to raise/lower inner boom)
B Tilt adjustment lock nut
Chapter 9 - Delta Boom - 55