Snorkel AB80J - Manual (Page 70)

Chapter 11 – Troubleshooting
66 AB80J/AB85J – 0420453
Symptom
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.
Riser and/or main boom drifts
down.
Drive functions do
not work.
Can not reach maximum drive
speed of 3 mph (4.8 km/h).
Wheels will not turn when
winching.
Possible Cause
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 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.
Hydraulic oil is cold and thick.
Boom speed knob set too slow.
Hydraulic system malfunction.
Load capacity exceeded.
Machine on too steep a grade.
Drive hubs are disengaged.
Low hydraulic system pressure.
Booms are not retracted and lowered.
Drive range switch is in LO or MID.
Drive hubs are engaged.
Corrective Action
Manually lower the boom using the
emergency lowering pump.
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.
Stow the machine and do not operate
until repairs are made.
Remove load from platform. Refer to
platform capacity placard for maxi-
mum capacity.
Lower the booms and drive to a level
surface.
Turn drive wheel disconnect plates
around so nipples point outward.
Stow the machine and do not operate
until repairs are made.
Fully retract and lower the boom.
Place the switch in the HI position.
Turn drive wheel disconnect plates
around so nipples point inward.