Snorkel TB85J CE - Manual (Page 64)

Chapter 11 – Troubleshooting
60 TB80/TB85J – 0112622EE
Symptom
Lower controls do
not work.
Upper controls do
not work.
Boom functions do not work.
Boom will not extend or raise above
horizontal.
Boom and drive functions seem
sluggish.
Boom jerks while it is extended.
Booms drift down.
Drive functions do not work.
Possible Cause
Battery disconnect switch turned off.
Emergency stop button at lower con-
trols is pushed in to the off position.
Controls selector switch is in the
platform position.
Ground operation switch not held in
the on position.
Battery disconnect switch turned off.
Emergency stop button at lower and
upper controls is in the off position.
Control selector switch at lower con-
trols is in the lower controls position.
Platform foot switch not engaged.
Platform overload sensor is tripped.
The drive/boom switch is in the drive
position.
Rear axles not properly extended.
Hydraulic oil is cold and thick.
Wire ropes are loose.
The emergency lowering valve is
open.
Hydraulic system malfunction.
Machine on too steep a grade.
Drive hubs are disengaged.
Low hydraulic system pressure.
Corrective Action
Place switch in the on position.
Pull the emergency stop button out-
ward.
Place the switch in the ground posi-
tion.
Hold the ground operation switch in
the on position while operating the
control toggle switches.
Place switch in the on position.
Pull the emergency stop buttons out-
ward.
Place switch in the upper controls
position.
Step down on platform foot switch
while operating controls.
If horn is sounding and red overload
light is on or blinking, remove weight
from the platform until the load is at
or below rated capacity.
Place the switch in the boom posi-
tion.
Extend the rear axles and properly
install the pin lock.
Use cold weather hydraulic oil as rec-
ommended for weather conditions.
Warm oil before operating the ma-
chine.
Refer the problem to a qualified ser-
vice technician.
Turn the emergency lowering knob
to close the valve.
Stow the machine and do not oper-
ate until repairs are made.
Lower the booms and drive to a level
surface.
Turn drive wheel disconnect plates
around so nipples point outward.
Stow the machine and do not oper-
ate until repairs are made.