6 - Maintenance
83
Readjustment of Boom - General Info
Before commencing adjustment jobs, please go through this check list.
1. The sprayer must be well lubricated (see the section “Lubrication”).
2. Connect the sprayer to the tractor.
3. Place tractor and sprayer on level and solid ground.
4. Activate parking brake for tractor.
5. Put wedges under the wheels to prevent rolling.
6. Unfold the boom.
7. Place strong supports below the centre section and all boom sections to relieve the load from the hydraulic cylinders.
If you have a lifting crane, support the centre sections as a minimum, as this is the heaviest boom part (up to 1000 kg).
8. Set slanting angle to neutral position (horizontal).
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DANGER! No one is allowed under the boom, while the adjustment is carried out.
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DANGER! Adjustment of hydraulic cylinders is to be carried out without pressure in the system.
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ATTENTION! For information on boom terminology, “Boom and Terminology” on page 26
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ATTENTION! To check the boom alignment, you can use a spirit level, or you can measure the distance to the ground
from similar points in both ends of the boom wing (this method is used for horizontal alignment and only on level
ground). When using the latter method, both distances should be equal to obtain a horizontal boom.
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ATTENTION! Boom sections, which are not support during adjustment jobs, might fall down or be difficult to adjust.
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ATTENTION! Adjustments are to be completed equally for both right and left boom wings.
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ATTENTION! The following types of arrows are used when describing the different boom adjustments:
Boom Lift Adjustment
If slack occurs (= backward and forward movements of the boom), the
slide arrangements (A) should be adjusted.
1. If there is too much space between the slide block (B) and the steel
frame, extra shims (C) should be mounted in between.
2. If the slide block (B) or the shims (C) are worn, they should be
replaced.
3. Loosen the bolts and nuts to separate the parts. Replace parts as
needed and tighten the bolts and nuts again.
4. Each slider arrangement should be adjusted, until the same
clearance has been reached at all 4 sliders.
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ATTENTION! It is very important that the boom carrier does not
run unequally in the H-frame. It is important that there is no play
in any of the sliders.
Point of adjustment Boom is adjusted upwards Boom is adjusted downwards Boom is adjusted away from you Boom is adjusted towards you
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