LeeBoy 8520C - Troubleshooting Operational Issues; Feeder, Power, and Heating System Issues

SYMPTOM CAUSE REMEDY
Feeder does not work on
one or both sides.
Defective switch. Adjust or replace switch.
Solenoid defective. Replace solenoid.
Feeder drive chain broken. Adjust or repair chain.
Defective conveyor motor. Replace motor.
Rear conveyor shaft broken. Replace conveyor shaft.
Feeder ight bars don’t
function properly.
Flight chains too loose. Adjust.
Feeder drive chain too loose. Adjust.
Loss of power to drives.
Relief out of adjustment. Check pressure and adjust if needed.
Piston groups worn. Replace.
No charge pressure. Check that charge pressure is 320 PSI.
Electric screed heating
system will not operate.
Control box power switch not in
ON position.
Ensure that the screed operator control box
Power switch is ON.
Breakers are in a “tripped”
position.
Ensure all element breakers are in the proper set
position.
Generator malfunction.
Check voltage and frequency. Rebuild or replace
if needed.
Only part of the electric
screed heats.
Screed section not plugged into
bottom of the control box.
Replug.
Element breakers for screed
section in a “tripped” condition.
Ensure the element breakers for that screed sec-
tion are not “tripped.”
Electric screed heat system
doesn’t start, or starts and
doesn’t run very long.
Heating system timed out. Check timing relay. Adjust or replace.
Electric Screed is heating,
but never gets hot enough
to pave.
Elements improperly clamped. Ensure elements are clamped properly.
Generator malfunction.
Ensure generator is “spinning.” Check voltage and
frequency. Rebuild or replace if needed.
Elements have been tested,
but the breaker still trips.
Faulty element wiring. Inspect and test element wiring.
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LeeBoy 8520C Conveyor Paver 5-55
Maintenance