LTC Repair Lombardini Engine Troubleshooting - Wacker Neuson
LTC Repair Lombardini Engine Troubleshooting - Wacker Neuson
LTC Repair Lombardini Engine Troubleshooting - Wacker Neuson
You also want an ePaper? Increase the reach of your titles
YUMPU automatically turns print PDFs into web optimized ePapers that Google loves.
Electrical <strong>Troubleshooting</strong> Procedures <strong>LTC</strong> <strong>Repair</strong><br />
6.11 Checking the Excitation Winding<br />
See Graphic: wc_gr003519<br />
WARNING<br />
Electric shock hazard. Only qualified personnel should conduct this<br />
test.<br />
The stator consists of three separate windings. Two of the windings<br />
are tapped for power. The third provides excitation to the rotor. This<br />
third winding is known as the excitation winding.<br />
To check the excitation winding, carry out the following procedure:<br />
6.11.1 Turn off the lights and shut down the machine.<br />
6.11.2 Remove the screws that secure the control panel cover to the control<br />
box. Remove the control panel cover and place it securely on the<br />
fender of the trailer.<br />
6.11.3 Disconnect the wires from the excitation capacitor (a). These are the<br />
excitation winding leads.<br />
6.11.4 Using the Ohms scale on a multimeter, measure the resistance across<br />
the two wires. There should be 2.2±0.5 Ohms measured.<br />
If 2.2±0.5 Ohms is not measured, the winding has failed; replace<br />
the stator.<br />
If 2.2±0.5 Ohms is measured, continue.<br />
6.11.5 Measure the resistance (continuity) between each winding lead (wire)<br />
and a common ground.<br />
If resistance (continuity) to ground exists, the winding has failed;<br />
replace the stator.<br />
If there is no continuity (resistance) to ground, the winding is OK.<br />
84