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 10 - Troubleshooting
10-1
Chapter 10 - Troubleshooting
Problem: Crane will not operate.
Solutions:
• Make sure that the parking brake is engaged.
• Make sure that the PT
O is engaged.
• 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 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 parking break is engaged.
• Make sure that the parking break switch is
working properly. Check the parking break
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
properly
. 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.
Problem: Winch brake will not hold.
Solutions:
• Check to see if the back pressure on the
return line of the winch is greater than 50 psi.
Try operating a function other than the winch.
Operate the function both ways and then stop.
Now operate the winch. If the brake still does
not hold, contact Customer Service at Stellar.
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