Snorkel AB60J Operator's Manual page 67

Symptom
Constant tone alarm sounds and
engine shuts off.
All functions stop working.
Lower controls do not work.
Upper controls do not work.
Upper and lower controls do not work
– machines with bumpguard system
option only.
Boom and drive functions seem
sluggish.
Turntable and main boom func-
tions do not work from the upper
controls.
Riser and/or main boom drifts
down.
Platform will not raise and alarm is
sounding.
AB60J – 0181972
Possible Cause
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.
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.
The bumpguard has come into
contact with a stationary object and
one or both of the light beams are
broken.
Hydraulic oil is cold and thick.
Boom speed knob set too slow.
The emergency lowering valve is
open.
Hydraulic system malfunction.
Machine not on a level surface.
Chapter 11 – Troubleshooting
Corrective Action
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 for 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 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 controls
position.
Step down on platform foot switch
while operating controls.
At the upper controls, hold the prox-
imity override switch up. Use the
controls to move the platform away
from the stationary object. Return the
proximity override switch to normal
operation.
Use cold weather hydraulic oil as
recommended for weather condi-
tions. Warm oil before operating the
machine.
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 platform and drive to a
level surface.
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