Snorkel AB60J - Manual (Page 67)

Chapter 11 – Troubleshooting
AB60J – 0181972 63
Symptom Possible Cause Corrective Action
Constant tone alarm sounds and
engine shuts off.
High engine temperature. Let the engine cool. Do not restart
the engine until the cause of over-
heating has been corrected.
Low oil pressure. 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.
All functions stop working. Low fluid level in reservoir. Check fluid level. Add correct type of
fluid if necessary.
Engine or pump failure. Manually stow the machine using the
emergency lowering knob.
Circuit breaker is tripped. Push circuit breaker button in to
reset.
Electrical system malfunction. Manually lower the boom using the
emergency lowering knob.
Lower controls do not work. Battery disconnect switch turned off. Place switch in the on position.
Emergency stop button at lower con-
trols is pushed in to the off position.
Pull the emergency stop button
outward.
Control selector switch is in the upper
control position.
Place the switch in the lower control
position.
Ground operation switch not held in
the on position.
Hold the ground operation switch in
the on position while operating the
control toggle switches.
Upper controls do not work. Battery disconnect switch turned off. Place switch in the on position.
Emergency stop button at lower and
upper controls is in the off position.
Pull the emergency stop buttons
outward.
Control selector switch at lower con-
trols is in the lower control position.
Place switch in the upper controls
position.
Platform foot switch not engaged. Step down on platform foot switch
while operating controls.
Upper and lower controls do not work
– machines with bumpguard system
option only.
The bumpguard has come into
contact with a stationary object and
one or both of the light beams are
broken.
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.
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.
Turntable and main boom func-
tions do not work from the upper
controls.
Boom speed knob set too slow. Turn knob toward fast.
Riser and/or main boom drifts
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.
Platform will not raise and alarm is
sounding.
Machine not on a level surface. Lower the platform and drive to a
level surface.