Snorkel TB47J - Manual (Page 62)

Chapter 11 – Troubleshooting
58 TB47J – 0075182
Symptom
Lower controls do
not work.
Upper controls do
not work.
Boom and drive functions seem
sluggish.
Boom jerks while it is extended.
Tip boom extend/retract, jib, and
platform rotate functions do not
work from the upper controls.
Booms drift down.
Drive functions do
not work.
Wheels will not turn when winch-
ing.
Only slow drive speed works.
Steer wheels do not turn right or
left on machines with tow option.
Tilt alarm does not work.
Possible Cause
Controls switch is in the platform po-
sition.
Ground operation switch not held in
the on position.
Battery disconnect switch turned off.
Emergency stop switch at lower and
upper controls is in the off position.
Control selector switch at lower con-
trols is in the ground position.
Platform foot switch not engaged.
Hydraulic oil is cold and thick.
Wire ropes are loose.
Boom speed knob set too slow.
The emergency lowering valve is open.
Hydraulic system malfunction.
Machine on too steep a grade.
Drive hubs are disengaged.
Low hydraulic system pressure.
Drive hubs are engaged.
The booms are elevated. High range
not selected.
Tow kit steering float valve is open.
Booms are stowed.
Corrective Action
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.
Place the emergency stop in the on
position.
Place switch in the platform position.
Step down on platform foot switch
while operating controls.
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 knob toward fast.
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.
Turn drive wheel disconnect plates
around so nipples point inward.
Completely lower the booms. Place
the drive range switch in the high po-
sition.
Close the steering float valve.
Normal operation. The tilt alarm is not
active until the booms are elevated.