TROUBLESHOOTING GUIDE
5-9
Remote Control
Dock Leveler Hydraulics
PROBLEM
PROBABLE CAUSE
SOLUTION
NO FUNCTIONS WORK
Check that transmitter power is on.
Self-explanatory
Check that transmitter power is on
Self-explanatory
Check system wiring for power into the
system.
Tighten loose connections
Check LED status display for system
status.
Self-explanatory
Check for proper grounding of system’s
electrical circuit.
Self-explanatory
Check system’s hydraulic system.
Clean or replace as necessary.
CERTAIN FUNCTIONS DO NOT WORK
Check the wiring connection from the
system to the valve coil for the output
function that does not work.
Tighten loose connections
Check LED status display for possible fault
or error indication.
Self-explanatory
Check hydraulic system
Clean or replace as necessary.
Check electrical system
Tighten loose connections
FUNCTIONS OPERATE
INTERMITTENTLY
Loose connector at the valve coil
Tighten loose connections
Check LED status display for system
status
Self-explanatory
Check receiver antenna for any damage
and proper connection.
Service or replace.
Check hydraulic system.
Clean or replace as necessary.
PROBLEM
PROBABLE CAUSE
SOLUTION
FAILS TO LIFT SEMITRAILER
Insufficient hydraulic supply pressure
Adjust relief valve for 2400-2500 psi.
Worn hydraulic pump
Service or replace.
Insufficient volume to dock level circuit
Adjust flow divider to provide 2.5 to 3.1
GPM.
Too heavy a load
Reduce load on cylinders.
LOWERS UNEVENLY OR ERRATICALLY
Insufficient volume to dock level circuit
Clean system and new oil and filter.
Dirty oil in check valves
Use same procedure as above.
Summary of Contents for 425B Series
Page 2: ......
Page 6: ...iv F 543 1011 Edition...
Page 14: ...2 6 F 543 1011 Edition STANDARD SPECIFICATIONS...
Page 26: ...3 12 F 543 1011 Edition OPERATING INSTRUCTIONS Figure 3 7 Steps for Loading and Unloading...
Page 32: ...3 18 F 543 1011 Edition OPERATING INSTRUCTIONS Figure 3 12 Dock Leveler Operation...
Page 61: ...MAINTENANCE AND LUBRICATION 4 21 Figure 4 13 Axle and Brake Assembly...
Page 76: ...4 36 F 543 1011 Edition MAINTENANCE AND LUBRICATION Page Intentionally Blank...
Page 86: ...5 10 F 543 1011 Edition TROUBLESHOOTING GUIDE...
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