Snorkel TB50 - Manual (Page 76)

Chapter 11 – Troubleshooting
72 TB42/TB50 – 0074923
Symptom Possible Cause Corrective Action
Boom and drive functions seem
sluggish.
Hydraulic oil is cold and thick. Use cold weather hydraulic oil as
recommended for weather condi-
tions. Warm oil before operating the
machine.
Boom jerks while it is extended. Wire ropes are loose. Refer the problem to a qualified
service technician.
Tip boom extend/retract and plat-
form rotate functions do not work
from the upper controls.
Boom speed knob set too slow. Turn knob toward fast.
Booms drift down. The emergency lowering valve is
open.
Turn the emergency lowering knob
to close the valve.
Hydraulic system malfunction. Stow the machine and do not oper-
ate until repairs are made.
Drive functions do
not work.
Machine on too steep a grade. Lower the booms and drive to a level
surface.
Drive hubs are disengaged. Turn drive wheel disconnect plates
around so nipples point outward.
Low hydraulic system pressure. Stow the machine and do not oper-
ate until repairs are made.
Can not reach maximum drive
speed.
Booms are not retracted and low-
ered.
Fully retract and lower the booms.
Drive range switch is in low. Place the switch in the high position.
Wheels won’t turn when winching
or pushing.
Drive hubs are engaged. Turn drive wheel disconnect plates
around so nipples point inward.
Steer wheels do not turn right or left
– machine with tow option only.
Tow kit steering float valve is open. Close the steering float valve.
Tilt alarm does not work. Booms are stowed. Normal operation. The tilt alarm is
not operational when the booms
are stowed.
Circuit breaker will not reset. Electrical circuit has not had time
to cool.
Wait a minute or two for circuit to
cool, then push circuit breaker but-
ton in to reset.
Electrical system malfunction. Do not operate machine until repairs
are made.
Electrical outlet does not work. Power supply not plugged in. Plug a source of power into the power-
input connector on the wiring box.
GFCI is tripped Push reset button on outlet.
AC generator switch not in the gen-
erator position.
With engine running, place the AC
generator switch in the generator
position.
Improper AC generator output
voltage.
Hydraulic oil is cold and thick. Use cold weather hydraulic oil as
recommended for weather condi-
tions. Warm oil before operating.
Hydraulic fluid temperature 200°F
(93°C) or more.
Prolonged machine operation or
driving.
Stop operation until fluid cools.
High pressure fluid return to reservoir
caused by kink or twisted hose.
Remove the kink or twist from the
hose. Let fluid cool before operating.
Hydraulic system component failure. Stow the machine and do not oper-
ate until repairs are made.
Severe hydraulic leak. Failure of hose, tube, fitting, seal,
etc.
Do not operate machine until repairs
are made.