Snorkel TB85J CE - Manual (Page 65)

Chapter 11 – Troubleshooting
TB80/TB85J – 0112622EE 61
Symptom
Drive functions do not work.
Can not reach maximum drive
speed of 4.8 km/h (3 mph).
Wheels will not turn when winch-
ing.
Steer wheels do not turn when the
drive joystick is moved to the right
or to the left.
Steer wheels do not turn right or
left – machines with tow option.
Tilt alarm does not work.
Circuit breaker will not reset.
Electrical outlet does not work.
Improper AC generator output
voltage.
Hydraulic fluid temperature 93°C
(200°F) or more.
Severe hydraulic leak.
Possible Cause
Platform overload sensor is tripped.
Booms are not retracted and lowered.
Drive range switch is in LO.
High range speed selector knob is
in the low speed position (down) –
four wheel drive machines only.
Drive hubs are engaged.
The drive joystick must be in the for-
ward or reverse position for the steer-
ing wheels to turn.
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.
Machine/generator switch not in the
generator position.
Hydraulic oil is cold and thick.
Prolonged boom operation or driving.
High pressure fluid return to reser-
voir caused by kinked or twisted
hose.
Hydraulic system component failure.
Failure of hose, tube, fitting, seal,
etc.
Corrective Action
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.
Fully retract and lower the boom.
Place the switch in the HI position.
Place the knob in the high speed
position (up).
Turn drive wheel disconnect plates
around so nipples point inward.
Push the drive joystick slightly for-
ward or backward when operating
steer right or left.
Close the steering float valve.
Normal operation. The tilt alarm is op-
erational when the booms are near
horizontal.
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 the power cord into the power-
input connector on the generator.
With engine running, place the ma-
chine/generator switch in the genera-
tor position.
Use cold weather hydraulic oil as rec-
ommended for weather conditions.
Warm oil before operating the ma-
chine.
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.