55Troubleshooting 55
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
Problem: Crane will not operate.
Solutions:
• Make sure that the parking brake is
engaged.
• Make sure that the PTO 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 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.
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.
T
ry 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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