6 - Maintenance143Readjustment of Boom - General InfoBefore 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 section as a minimum, as this is the heaviest boom part (up to 1000 kg).8. Set slanting angle to neutral position (horizontal).€ DANGER! No one is allowed under the boom, while the adjustment is carried out.Adjustment of hydraulic cylinders is to be carried out without pressure in the system. ATTENTION! For information on boom terminology, see “Boom and Terminology” on page 65.To check the boom alignment, you can use a spirit level, or you can measure the distance to the ground from similarpoints in both ends of the boom wing (this method is used for horizontal alignment and only on level ground). Whenusing the latter method, both distances should be equal to obtain a horizontal boom.Boom sections, which are not support during adjustment jobs, might fall down or be difficult to adjust.Adjustments are to be completed equally for both right and left boom wings.Boom Adjustment OrderCarry out adjustments in the following order:1. Trapeze suspension and centre section.2. Inner wing section.3. Outer wing section.4. Breakaway section.1234
