stellar labs 12621 - Chapter 3 - Troubleshooting

Stellar
®
Heavy-Duty Telescopic Crane Owner’s Manual | Page 27
Chapter 3 - Troubleshooting
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.
Prior to troubleshooting:
Always make sure the emergency brake is engaged, the PTO is engaged (if equipped),
and the main power switch of the control panel inside the cab is turned on.
To determine if there is an electrical or hydraulic problem, rst try to operate the crane
manually. This is done by turning the manual override knob on the ow valve, then
operating the individual solenoid valves located along the valve bank. If the crane
operates, there will be an electrical problem to trace. If the crane does not operate using
the manual overrides, there is a problem within the hydraulic circuit.
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.
• Make sure that the hydraulic pump is operating at its rated ow or GPMs. Check the
ow by using the ow 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 by radio remote.
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 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 properly. If the switch is defective, simply
replace it.
• Make sure that there is power going to the valve bank coil solenoid of the function that
MODEL NO.
SERIAL NO.
DATE
MADE IN THE U.S.A. BY STELLAR INDUSTRIES, INC.
PN C5942
®
PATENT INFORMATION
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