Snorkel AB46JRT - Manual (Page 61)

Chapter 11 – Troubleshooting
AB46JRT – 0260071 57
Symptom
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.
Boom and drive functions seem
sluggish.
Turntable and main boom func-
tions do not work from the upper
controls.
Possible Cause
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 button at lower con-
trols is pushed in to the off position.
Controls switch is in the upper con-
trol 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.
Hydraulic oil is cold and thick.
Boom speed knob set too slow.
Corrective Action
Turn the engine off. Do not restart the
engine until the cause of no alternator
current has been corrected or the fan
belt is replaced.
Let the engine cool. Do not restart the
engine until the cause of overheating
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.
Push circuit breaker button in to
reset.
Manually lower the boom using the
emergency power system.
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 controls
position.
Step down on platform foot switch
while operating controls.
Use cold weather hydraulic oil as
recommended for weather condi-
tions. Warm oil before operating the
machine.
Turn knob toward fast.