6 - Maintenance
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Adjustment of 3-Way Valve
The large ball valve (type S93) can be adjusted if it is too tight to operate
or if it is too loose (= liquid leakage).
• Correct setting is when the valve can be operated smoothly by one
hand.
Use a suitable tool and adjust the toothed ring inside the valve as shown
on the drawing.
ATTENTION! The small ball valves (type S67) cannot be adjusted.
Safety Valve Activation
To make the fluid system work perfectly over time, it is good practice to regularly provoke opening of the safety valve.
This prevents clogging and ensures proper function of the safety valve. Opening of the valve is done by turning the pressure
SmartValve to an unused function or “TurboFiller” (without activating it) when the pump is running. This is good practice for
all sprayers; particularly for sprayers without optional equipment.
Readjustment of Boom - General Info
Before beginning boom adjustments, 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 brakes for tractor.
5. Put wedges under the wheels to prevent rolling.
6. Unfold the boom.
7. Place strong supports below the center section and all boom sections to relieve the load from the hydraulic cylinders.
If you have a lifting crane, support the center section as a minimum, as this is the heaviest boom part (up to 2200 lb or
1000 kg).
8. Set tilt angle of both wings to horizontal position.
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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 “Spray Boom and Terminology” on page 37.
To check the boom alignment, you can use a bubble 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.
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.
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