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313974-AA-B
NL4500G4 TRIDENT
Header
Troubleshooting
Symptom:
Reason:
Correction:
Spinner will not run
Defective Spinner Control
Valve
Replace spinner control valve cartridge and
coil.
No voltage at valve
Verify spinner switch is on.
Verify spinner enable is checked.
Verify controller has a target spinner RPM
entered.
Check WSM 7.5 amp fuse is not blown.
Verify spinner control harness is not damaged.
Verify system was con
fi
gured as Basic
independent.
No hydraulic
fl
ow
Verify hydraulics are on.
Pressure test pump - replace as needed.
System is going over relief - test & replace as
needed.
Spinner will not shut
off
Defective spinner control
valve
Replace spinner control valve cartridge.
Control valve is manually
overrode
Loosen jam nut on control valve cartridge and
back set screw out until spinner stops.
Spinner runs erratic
Defective spinner control
valve
Replace spinner control valve cartridge.
Spinner speed sensor
harness failure
Replace sensor harness.
Spinner speed sensor not
properly installed
Adjust sensor so that gap between sensor and
fi
n mounting bolt is less than 1/8”.
Spinner speed drops
off when turning
around
Improper control settings
Verify PWM control is set properly (HOLD for gear
pumps, CONTROL for variable displacement).
Spinner speed does
not hit target
Defective spinner control
valve
Replace spinner control valve cartridge.
Pump failure
Flow and pressure test pump.
Spinner speed sensor not
properly installed
Adjust sensor so that gap between sensor and
fi
n mounting bolt is less than 1/8”.
Hydraulic
fl
ow dropping off
Adjust settings and speed. Pressure test relief
(adjust or replace as needed).
Spinner speed sensor
harness failure
Replace sensor harness.
Spinner speed sensor failure Replace spinner speed sensor.