LTC Repair Lombardini Engine Troubleshooting - Wacker Neuson
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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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Electrical Troubleshooting Procedures LTC Repair 6.5 Troubleshooting Flowcharts The troubleshooting flowcharts are designed to take you through the process of determining the source of a problem with engine starting or machine operation. Many of the tests involve live voltages and therefore should only be attempted by qualified personnel. Detailed procedures for carrying out the tests are included in this manual. All highlighted text within the flowcharts have matching sections in this manual. 74

LTC Repair Electrical Troubleshooting 6.6 Lights do not Illuminate—Flowchart 1A Light(s) Do Not illuminate Is/are circuit breaker(s) in closed position? Yes Are bulbs black or burnt? No Is wiring connected at quickdisconnects? Yes Check engine speed. See Checking Engine Speed. Is engine speed correct? Yes No Yes No No Close circuit breaker(s). Replace bulbs. Connect quick-disconnects. Check engine rpm with a photo tach or vibrotach (Sirometer (wire whip)). If rpm is low: 1. Change engine air and fuel filters. 2. If necessary, reposition speed control lever on injection pump. Check voltage from generator to the short terminal strip. See Checking Generator Voltage at the Short Terminal Strip. Is 120V±10% measured across each winding? No See Flowchart 1C 75 Yes See Flowchart 1B wc_gr003514

Electrical <strong>Troubleshooting</strong> Procedures <strong>LTC</strong> <strong>Repair</strong><br />

6.5 <strong>Troubleshooting</strong> Flowcharts<br />

The troubleshooting flowcharts are designed to take you through the<br />

process of determining the source of a problem with engine starting or<br />

machine operation. Many of the tests involve live voltages and<br />

therefore should only be attempted by qualified personnel. Detailed<br />

procedures for carrying out the tests are included in this manual. All<br />

highlighted text within the flowcharts have matching sections in this<br />

manual.<br />

74

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