Commander T Series PB# 4100032
Rev.C 03/12
PowerBoss, Inc. Copyright 2011
Page 87
TROUBLESHOOTING CHART
PROBLEM
POSSIBLE CAUSE(S)
SOLUTION(S)
PowerBoss® creeps in neutral.
Directional control pedal return spring 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
Little or no vacuum in brush
compartment.
Filters clogged.
Clean filters.
Leak or clog in hose from impeller.
Repair leaks; clear obstructions or
replace hose.
Impeller failure.
Check and repair.
Scrubhead will not lower.
Fuse blown.
Replace fuse.
Loose scrubhead switch wires.
Connect wires.
Loose connection of plug at actuator.
Connect.
Defective actuator.
Replace actuator.
Defective scrubhead switch.
Replace switch.
TROUBLESHOOTING