Nautilus Hi-Dump Rider Scrubber/Sweeper #988752UM Rev. * 03/16
© 2014-2015 Minuteman International, Inc.
Page 93
TROUBLESHOOTING CHART
PROBLEM
POSSIBLE CAUSE(S)
SOLUTION(S)
Nautiilus Hi-Dump® machine
creeps in neutral.
Directional control pedal, Propulsion Pump
Neutral Setting is out of adjustment.
Perform the adjustment procedures.
Brushes do not turn or turn very
slowly.
Hydraulic system problem:
See Hydraulics System Problems in
this section.
Motor
Control valve
Gear pump
Relief valve
Brush switch not on.
Press to on position.
Foot pedal not depressed.
Press to forward position.
Scrub head will not lower.
Fuse blown.
Replace fuse.
Loose scrub head switch wires.
Connect wires.
Loose connection of plug at actuator.
Connect.
Defective cylinder.
Replace cylinder.
Defective scrub head switch.
Replace switch.
Defective solenoid valve.
Replace solenoid valve or coil.
TROUBLESHOOTING