Page 20 | Stellar
®
Small OTR Service Crane Owner’s Manual
Crane operates
slowly.
Crane does not have proper
electrical power.
Check fuse and holder.
Verify good ground.
Verify good power supply.
Verify proper voltage.
Verify electrical wiring/connection integrity.
Ensure manual/remote switch is working
properly.
Verify engine speed control has been
activated.
Remote transmitter is in snail
mode.
Switch remote from snail mode to normal
mode.
Crane will operate
manually but will not
operate electrically.
Remote/Manual switch is in
the 'Manual' position.
Toggle the Remote/Manual switch to the
'Remote' position. Ensure the switch is working
properly.
Radio receiver displaying an
error code.
Refer to radio system manufacturer's manual
Transmitter is not properly
started.
Start up transmitter properly - Refer to mfg
manual.
Crane will operate
electrically but will
not operate manually
Remote/Manual switch is in
the 'Remote' position.
Toggle the Remote/Manual switch to the
'Manual' position. Ensure the switch is working
properly.
Not all crane
functions operate
using the radio
remote transmitter
or crane operated
intermittently.
Radio receiver displaying an
error code.
Refer to radio system manufacturer's manual
Cylinder drifts
outward or
downward.
Counter balance valves are
not functioning properly.
Contact Stellar Customer Service for support.
Air in hydraulic system.
Fully cycle the cylinder both directions (blow
past relief) to remove air from system.
Leak in hydraulic system.
Visually inspect. Repair/replace if necessary.
Defective cylinder piston
seals.
Visually inspect. Repair/replace if necessary.
Excessive load induced
through crane.
Verify capacity chart.
Valve bank not functioning
properly.
Verify oil quality.
Damaged cylinder.
Visually inspect. Replace if necessary.