LeeBoy 5300B - Heating Elements; Generator Speed Check; Generator Voltage Testing

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Maintenance
LeeBoy Model 5300B Compact Paver 5-25
Heating ElementsHeating Elements
Each heating element is sized to t properly and provide
sufcient heat to the screed plate. Elevated temperature
prevents mix from sticking to the lower surface of the
screed plate.
An element assembly consists of four main components:
• The element.
• The wire protector adapter.
• The wire protector.
• The two-pin wire plug at the end of the element
protector.
Each element is covered by a thin strip of insulation
to keep heat from escaping. A support bar and shield
protects the element assembly.
Each element is clamped onto the screed plate to
provide a positive and efcient connection. Enough
pressure should be applied to the element assembly
to sufciently hold it securely against the screed plate
surface.
To remove an element:
1. Remove top cover from the extension screed plate.
2. Loosen all the clamping studs over the element.
3. Remove and replace element.
4. After tightening the clamping stud, lock the clamp by
tightening the stud jam nut.
Generator Speed CheckGenerator Speed Check
This adjustment should only be
performed by an authorized LeeBoy dealer. Work
not performed by an authorized dealer can damage
machine and void the warranty.
The generator should never be
operated at a speed of 3800 RPMs or greater.
A voltmeter set to read frequency (Hz) can be used to
test generator speed. When the engine is running at
1800 - 2200 RPMs, the generator should operate at 60
Hz. Make certain that the paver engine is running at
1800 - 2200 RPMs and the hydraulic temperature is at
normal operating levels.
Generator Voltage TestingGenerator Voltage Testing
The generator is hydraulically driven. When the engine
is running at 2100 RPMs (paving speed), the generator
produces 240 VA. (Figure 5-22)
HIGH VOLTAGE. This procedure must
be performed by a qualied electrical technician
due to the danger of electrical shock, injury or even
death. See your authorized dealer.
Figure 5-22. Generator Voltage Testing
Test the generator voltage at the generator and at the
electric heat control box:
1. Use a volt meter to measure between the two main
input wires L-1 (black wire) and L-2 (white wire) at
the terminal block, which should measure 240 ± 5
VAC. (Figure 5-23) If you measure from L-1 to the
frame of the paver, or ground, the voltage should be
approximately 110 VAC.
2. If the voltage is lower, make certain the generator is
turning the correct speed by testing with a Hz meter
(valve should be 60 - 63 Hz.
3. If the voltage is still low, contact your authorized
LeeBoy dealer for generator speed tuning.