TROUBLESHOOTING
Publication: 0028607 7-11
7
Boom Boom not functioning No selection made on
control panel MODE
rocker switches
Enable WORK and VAC modes.
Work mode not enabled,
still in road mode
Use alternate controls — joystick,
pendant, or front control panel HMI
screen backup controls.
Boom speed too fast or
slow
No hydraulic pressure See “Hydraulics” function in Table 7-1:
Mechanical Troubleshooting.
Pinched, plugged, or
broken hydraulic hose
Electrical issue
Boom speeds affected by
variations in internal and
ambient temperatures
Go to valve settings HMI screen and
adjust each function either positive or
negative to compensate.
Vacuum system Vacuum pump does not
draw vacuum
Vacuum pump not
engaged
• Enable WORK and VAC modes.
• Make sure the transfer case is
shifted.
Transmission not enabled Shift transmission to D drive.
Display not showing
blower RPM
Speed sensor failure Repair or replace the speed sensor.
Vent door will not close Debris level sensor
shows body full of
material (liquid or solids)
Dump the load.
Control system in
Emergency Stop mode
See “Emergency stop” function in this
table.
Vacuum vent
door
Vacuum vent door will not
function
Vacuum pump not
engaged
Enable WORK and VAC modes.
Vacuum relief valve open
due to debris level sensor
sensing a full load
Dump the load or perform a debris
compaction function.
Air solenoid failure Check chassis air pressure. Run
engine until pressure rises.
Electric signal not present Locate and repair or replace.
Table 7-2: Electrical Troubleshooting (Continued)
Function Symptom Probable Cause Solution
To Next Page
Loading...