LTC Repair Lombardini Engine Troubleshooting - Wacker Neuson
LTC Repair Lombardini Engine Troubleshooting - Wacker Neuson
LTC Repair Lombardini Engine Troubleshooting - Wacker Neuson
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<strong>LTC</strong> <strong>Repair</strong> <strong>Lombardini</strong> <strong>Engine</strong> <strong>Troubleshooting</strong><br />
5.12 Checking Oil Pressure and Coolant Temperature Switches<br />
See Graphic: wc_gr003230<br />
5.12.1 If the engine starts but shuts down after approximately 10 seconds,<br />
check the following.<br />
5.12.2 Check the engine oil level and add oil if necessary. Also check the<br />
coolant temperature. If the coolant temperature is high, allow the<br />
engine to cool. Flush and fill the radiator with the correct coolant.<br />
5.12.3 Check the wiring of the oil pressure switch (a) and the coolant<br />
temperature switch (b) (903 engines) or (c) (1003 engines). If the<br />
wiring of either switch is shorted to ground, the engine will shut down.<br />
Be sure the switches are functioning—check each for continuity. The<br />
oil pressure switch is a normally closed (NC) switch that should have<br />
continuity when the engine is off. If the switch has no continuity when<br />
the engine is off, the switch is faulty; replace it.<br />
The high coolant temperature switch is a normally open (NO) switch.<br />
This switch should have no continuity when the engine is off. If this<br />
switch has continuity when the engine is off, it has shorted and is faulty;<br />
replace it.<br />
c<br />
a<br />
67<br />
b<br />
wc_gr003230
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