Checking Ball Seat In Ec Controls; Checking The Valve Cone In Distribution Valves - Hardi EAGLE 3PT Boom Operator's Manual

8.8 Checking Ball Seat in EC Controls

If problems with on/off valve occurs (dripping nozzles when on/off valve
is closed), the ball and ball seat should be checked.
1. Remove the 2 bolts attaching the on/off-pressure valve unit to the
bracket.
2. Unscrew the union nut (A) (Fig. 36) and pull the on/off pressure valve
away from the distribution valves.
3. Check the ball for sharp edges and scratches and check the ball seat
for cracks and wear. Replace if necessary.

8.9 Checking the Valve Cone in Distribution Valves

Periodically check the distribution valves for proper sealing.
1. Flush the sprayer with clean water and
open master on/off and all distribution
valves. (Shut sprayer off)
2. Remove clip (A) (Fig. 37) and remove hose
(B) (Fig. 37) for the constant pressure
device. When the housing is drained make
sure everything is clear from part (B) (Fig. 37).
3. Start the sprayer, there should not be any
flow of liquid through the constant pressure
passage. If there is any leakage, the valve
cone (E) (Fig. 37) must be changed. (Shut
sprayer off.)
4. Remove clip (C) (Fig. 37), and pull the EC
motor off the valve housing.
5. Remove (D) (Fig. 37) screw and replace
the valve cone (E) (Fig. 37). Reassemble in
opposite sequence.
HARDI
A
Fig. 36
® EAGLE 3PT BOOM OPERATORS MANUAL
On/off pressure
valve unit
Fig. 37
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