Snorkel SB85J - Manual (Page 65)

Chapter 11 – Troubleshooting
SB85J Fixed Axle – 0112975 59
Symptom
Upper controls do
not work.
Boom functions do not work.
Boom and drive functions seem
sluggish.
Boom jerks while it is extended.
Turntable and main boom functions
do not work from the lower controls.
Booms drift down.
Drive functions do
not work.
Possible Cause
Battery disconnect switch turned off.
Emergency stop button at lower and
upper controls is in the off position.
Controls selector switch at lower con-
trols is in the lower control position.
Platform foot switch not engaged.
Platform overload sensor is tripped.
The horn is sounding and red over-
load light is blinking.
Platform overload sensor is in error
mode. The horn is sounding and red
overload light is constantly on.
The drive/boom switch is in the drive
position.
Hydraulic oil is cold and thick.
Wire ropes are loose.
Boom speed knob set too slow.
The emergency lowering valve is open.
Hydraulic system malfunction.
Machine on too steep a grade.
Drive hubs are disengaged.
Low hydraulic system pressure.
Platform overload sensor is tripped.
The horn is sounding and red over-
load light is blinking.
Platform overload sensor is in error
mode. The horn is sounding and red
overload light is constantly on.
Corrective Action
Place switch in the on position.
Pull the emergency stop buttons out-
ward.
Place switch in the upper controls
position.
Step down on platform foot switch
while operating controls.
Remove weight from the platform un-
til the load is at or below rated ca-
pacity.
Remove weight from the platform un-
til the load is at or below rated ca-
pacity. Cycle machine power off, then
on. If alarm continues, system may
need recalibration.
Place the switch in the boom posi-
tion.
Use cold weather hydraulic oil as rec-
ommended for weather conditions.
Warm oil before operating the ma-
chine.
Refer the problem to a qualified ser-
vice technician.
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 booms and drive to a level
surface.
Turn drive wheel disconnect plates
around so nipples point outward.
Stow the machine and do not oper-
ate until repairs are made.
Remove weight from the platform un-
til the load is at or below rated ca-
pacity.
Remove weight from the platform un-
til the load is at or below rated ca-
pacity. Cycle machine power off, then
on. If alarm continues, system may
need recalibration.