4 - Sprayer setup
4.15
ATTENTION! The system must not be pressurized during
adjustment.
DANGER! Test of the hydraulic system should be done very
cautiously. There may be air trapped in the system which can
cause violent movements of the boom.
The purpose of this adjustment is to align the 4 steering arms (A) to
level position. Adjustment of the pendulum device needs to be car-
ried out before putting the sprayer into operation for the first time.
Subsequent adjustment will be required very seldom.
Perform adjustments with the boom unfolded.
1. Support the pendulum with e.g. a crane.
2. Remove the bolt in the bottom end of the spring arrangement
and the big nut at the upper end of arrangement.
3. Lower the pendulum until spring arrangement clears the pendu-
lum.
4. Remove the spring arrangement.
5. Fix the ends of spring arrangement. Grasp around the spring and
rotate the whole spring arrangement to regulate the length of it.
Clockwise rotation: The spring arrangement becomes longer and
the steering arms are moved downwards.
Counterclockwise rotation: The spring arrangement becomes shor-
ter and the steering arms are moved upwards.
Use a level to inspect the alignment to make sure the 4 steering
arms are level. When correct position is obtained:
1. Refit the spring arrangement and tighten the big nut at the upper
end of arrangement.
2. Extra check that the spring arrangement is correctly refitted and
then release support from pendulum.
DANGER! Hydraulic leaks: Never use your fingers to locate a
leakage in any part of the hydraulic system. Due to high pres-
sure, hydraulic oil may penetrate the skin.
Adjustable restrictors for the regulation of boom folding and unfol-
ding speed, are located on the hydraulic distribution block (fitted at
the boom centre frame). It is important to adjust the valves to ensu-
re that the boom operates smoothly.
1. Adjust the 4 screws (A). They are screwed the whole way in
clockwise, and then 1 turn back. The system is now basically adju-
sted.
2. Unfold and fold the boom several times in order to heat the oil
and remove air from the system.
3. Adjust the screws (A) until the individual rams run with the speed
wanted (clockwise = less speed).
Boom folding speed adjustment - LPY only
Pendulum setup
Boom
