Snorkel TB66JRT Operator's Manual page 73

Symptom
Engine starts from the upper con-
trols but no boom functions work
– machines with AC generator op-
tion only.
Engine dies when the control selector
switch at the lower controls is placed
in the upper control position.
Constant tone alarm sounds while
the engine is running.
Constant tone alarm sounds and
engine shuts off.
All functions stop working.
Lower controls do not work.
Upper controls do not work.
TB66J – 0083740
Possible Cause
The AC generator switch is in the
generator position.
Upper controls are not set-up prop-
erly.
High engine temperature.
Low oil pressure.
No alternator current/broken fan
belt.
High engine temperature.
Low oil pressure.
Low fluid level in reservoir.
Engine or pump failure.
Circuit breaker is tripped.
Electrical system malfunction.
Battery disconnect switch turned off.
Emergency stop switch at lower con-
trols is pushed in to the off position.
Control selector switch is in the upper
control 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 control position.
Platform foot switch not engaged.
Chapter 11 – Troubleshooting
Corrective Action
Place the switch in the machine posi-
tion to operate machine functions.
At the upper controls, pull the emer-
gency stop button upward and turn
the anti-restart master switch on.
Lower the platform and turn the
engine off and let it cool. Do not
restart the engine until the cause of
overheating has been corrected.
Lower the platform and turn the
engine off. Do not restart the engine
until the cause of low oil pressure
has been corrected.
Turn the engine off. Do not restart
the engine until the cause of no al-
ternator current has been corrected
or the fan belt is replaced.
Let the engine cool. Do not restart
the engine until the cause of over-
heating has been corrected.
Do not restart the engine until the
cause of low oil pressure has been
corrected. The engine can be re-
started with low oil pressure, but it
will only run a few seconds before it
shuts off again.
Check fluid level. Add correct type
of fluid if necessary.
Manually stow the machine using
the emergency power system or the
emergency lowering knob.
Push circuit breaker button in to
reset.
Manually lower the boom using the
emergency lowering knob.
Place switch in the on position.
Pull the emergency stop button
outward.
Place the switch in the lower control
position.
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
outward.
Place switch in the upper control
position.
Step down on platform foot switch
while operating controls.
69