8-2 LeeBoy Model 8510B Conveyor Paver
Troubleshooting
Troubleshooting Charts
The troubleshooting charts below identify the most
common symptoms of failure. Use these charts to help
identify the failed component and possible remedies.
If the problem persists, see your authorized LeeBoy
Dealer.
Electric Screed
Table 8-1. Electric Screed Troubleshooting
SYMPTOM CAUSE REMEDY
Electric Screed heating
system will not operate at
all.
Control box power switch not in
“on” position.
Ensure that the screed control box power
switch is “on”.
Breakers are in a tripped position
with no breakers showing a tripped
condition.
Ensure all element breakers are in their “set”
position with no breakers showing a tripped
condition.
Engine not operating at proper
throttle.
Ensure the paver is running. Set the throttle on
the paver to full engine RPM.
NOTE: Throttle positions less than full will still
produce screed heat, but at a drastically
reduced rate and temperature.
Generator malfunction. See generator voltage testing.
Electric Screed heats, but
one screed section does
not.
Screed section not plugged into
bottom of control box out puts.
Ensure the screed not heating is plugged into
the bottom of the control box out puts.
Element breakers for screed
section in a tripped condition.
Ensure the element breakers for that screed
section are not tripped.
Faulty element relay. See Testing element relays, or Testing element
resistance.
When starting the electric
heat system, it will not stay
running long, or at all.
Heat system timed out. See Testing system timer.
Electric Screed is heating,
but never gets hot enough
to pave.
Engine not operating at proper
throttle.
Ensure the paver is running. Set the throttle on
the paver to full engine RPM.
NOTE: Throttle positions less than full will still
produce screed heat, but at a drastically
reduced rate and temperature.
Elements improperly clamped. Go over proper element installation
procedures, and ensure elements are clamped
properly.
Generator malfunction. See Generator speed tuning.
See Generator voltage testing.
Electric heating system
seems to be working, but
the light isn’t on.
“Heat On” light is burned out. Replace the “Heat On” light.
Elements have been tested
but the breaker still trips.
Faulty element wiring. Test or inspect element wiring.
Faulty breaker. Replace defective breaker.
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