45
PN 44024
Troubleshooting 45
This chapter will list a number of potential problems that may occur while operating the
crane. Most problems are easily solved using the solutions portion of this chapter. If
problems persist, please contact Customer Service at Stellar Industries 1-800-321-3741.
Chapter 9 - Troubleshooting
Problem: Crane will not operate.
Solutions:
• Make sure that the parking brake is
engaged.
•
Make sure that the PTO is engaged (If
applicable).
• Make sure that there is 12V power going
to the radio receiver. If there is no power
going to the receiver, trace back to the
power source and check for a blown
fuse or loose ground connection. Refer to
radio remote troubleshooting guide at
the end of this chapter.
• Make sure that the transmitter batteries
are fully charged. (Rechargeable
batteries are good for 11 months or 200
charges)
• Make sure that the hydraulic pump is
operating at its rated flow or GPMs.
Check the flow by using the flow meter
to determine the GPMs. It is possible that
the hydraulic pump is getting weak. If
this is suspected, contact Stellar
Customer Service.
Problem: Crane will operate manually but
will not operate electrically.
Solutions:
• Make sure that there is 12V power going
to the radio receiver. If there is no power
going to the r
eceiver, trace back to the
power source and check for a blown
fuse or loose ground connection. Refer to
radio remote troubleshooting guide at
the end of this chapter.
• Make sure that the parking brake is
engaged.
• Make sure that the parking brake switch
is working properly. Check the parking
brake switch by performing a continuity
test. If the switch is defective, simply
replace it.
Problem: Not all crane functions operate
using the radio remote transmitter or crane
operates intermittently.
Solutions:
• Make sure that the toggle switch is
working pr
operly. If the switch is
defective, simply replace it.
• Make sure that there is power going from
the valve bank coil solenoid or to the
function that will not operate. If no
power is going to the coil solenoid,
check wiring connections on wire
harness plug connector for broken wires,
loose connection or poor crimp. If power
is going to the solenoid valve, it may not
be opening to allow hydraulic oil to the
function that is not operating. Remove
stem valve, thoroughly clean, lubricate,
and reinstall valve. Do not over tighten.
If the valve will not close, simply replace
it.
Problem: Two functions operate at the same
time while only toggling one function.
Solutions:
• Make sure that the solenoid valves are all
in the center position.
• Determine the function that is operating
on its own. Check to see if there is power
going to the solenoid valve from a
function that should not be operating. If
voltage is present at the solenoid valve
without operating the function, the
toggle switch has failed and is stuck in
the “on” function. If no voltage is
present, the solenoid valve may be
partially open. Remove the stem valve,
thoroughly clean, lubricate, and reinstall
the valve. Do not over tighten. If valve
will not close, simply replace it.
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