Snorkel TB60 Operator's Manual page 74

Chapter 11 – Troubleshooting
Symptom
Boom and drive functions seem
sluggish.
Boom jerks while it is extended.
Tip boom extend/retract and plat-
form rotate functions do not work
from the upper controls.
Booms drift down.
Drive functions do
not work.
Can not reach maximum drive
speed.
Wheels won't turn when winching
or pushing.
Steer wheels do not turn right or left
– machine with tow option only.
Tilt alarm does not work.
Circuit breaker will not reset.
Electrical outlet does not work.
Improper AC generator output
voltage.
Hydraulic fluid temperature 200°F
(93°C) or more.
Severe hydraulic leak.
70
Possible Cause
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.
Booms are not retracted and low-
ered.
Drive range switch is in low.
Drive hubs are engaged.
Tow kit steering float valve is open.
Booms are stowed.
Electrical circuit has not had time
to cool.
Electrical system malfunction.
Power supply not plugged in.
GFCI is tripped
AC generator switch not in the gen-
erator position.
Hydraulic oil is cold and thick.
Prolonged machine operation or
driving.
High pressure fluid return to reservoir
caused by kink or twisted hose.
Hydraulic system component failure.
Failure of hose, tube, fitting, seal,
etc.
Corrective Action
Use cold weather hydraulic oil as
recommended for weather condi-
tions. Warm oil before operating the
machine.
Refer the problem to a qualified
service 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.
Fully retract and lower the booms.
Place the switch in the high position.
Turn drive wheel disconnect plates
around so nipples point inward.
Close the steering float valve.
Normal operation. The tilt alarm is
not operational when the booms
are stowed.
Wait a minute or two for circuit to
cool, then push circuit breaker but-
ton in to reset.
Do not operate machine until repairs
are made.
Plug a source of power into the power-
input connector on the wiring box.
Push reset button on outlet.
With engine running, place the AC
generator switch in the generator
position.
Use cold weather hydraulic oil as
recommended for weather condi-
tions. Warm oil before operating.
Stop operation until fluid cools.
Remove the kink or twist from the
hose. Let fluid cool before operating.
Stow the machine and do not oper-
ate until repairs are made.
Do not operate machine until repairs
are made.
TB60 – 0083739