Hardi NAVIGATOR 3000, Operator'S Manual, Page: 94 / 122

6 - Maintenance
92
Speed Transducer for Pump
The speed transducer, measuring rounds per minute (r.p.m.), is located
at the inner side of the P.T.O. shield. This sensor is an inductive type,
which requires metallic protrusions to pass by it to trigger a signal.
Adjustment
1. Adjust air gap (A) to 3/16” (4 mm). Use a feeler gauge or similar tool.
2. After adjustment, turn the pump shaft. Verify air gap variations less
than +/-0.02” (+/-0.5 mm). Check this for the entire circumference.
3. Verify transducer function:
• HC 6500/ISOBUS VT:
Monitor the menu [4.5.4.9.6 P.T.O. pump frequency].
Cone check/replacement for EFC distribution valve
Periodically check the distribution valves for proper sealing. Do this by
running the sprayer with clean water and open all distribution valves.
Cautiously remove the clip (A) and pull out the hose (B) for the return
line. When the housing is drained, there should be no liquid flow
through the return line. If there is any leakage, the valve cone (E) must
be changed. Remove the clip (C) and lift the motor housing off the valve
housing. Then unscrew the screw (D) and replace the valve cone (E).
Reassemble in reverse order.
Cone check/replacement for EVC distribution valve
Periodically check the distribution valves for proper sealing. Do this by
running the sprayer with clean water and open all distribution valves.
Cautiously remove the clip (A) and pull out the hose (B) for the return
line. When the housing is drained, there should be no liquid flow
through the return line. If there is any leakage, the valve cone (E) must
be changed. Remove the clip (C) and lift the motor housing off the valve
housing. Then unscrew the screw (D) and replace the valve cone (E).
Reassemble in reverse order.