Repair Manual Mobile Generator - Wacker Neuson

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Output Voltage Troubleshooting G 70 Continued from the previous page. 8. Reconnect the 4-pin connector and the green and black wires to the AVR. NOTICE: NEVER run the generator when the green and black wires are disconnected from the AVR and all other wires are connected to the AVR. Damage to the generator will occur. 9. Reconnect the bus bar. DO NOT run the generator with the bus bar disconnected. The AVR sensing wires have now been checked. Continue with Section 8.9 Flashing the <strong>Generator</strong>. wc_tx000958gb.fm 76
G 70 Output Voltage Troubleshooting 8.9 Flashing the <strong>Generator</strong> (checking the excitation system) Prerequisites Source of 12 VDC Procedure Follow the procedure below to flash the generator. 1. Open the large hinged panel and locate the Automatic Voltage Regulator (AVR). 1000 F 200 V 20 2 200m 2. Disconnect all the wires from the AVR except the rheostat wires and the white jumper wire. 3. Connect a multimeter (set to the 500 VAC (or higher) scale) to the green and black wires. 4. Start the engine. Then, connect the blue wire to the ground lug and the yellow wire to the B+ terminal strip. NOTICE: Only connect the wires to the machine when the engine is running. Otherwise, damage to the winding may occur. 5. Measure the voltage across the green and black wires. Is 270–320 VAC measured? 6. Shut down the generator. Then, reconnect all the wires to the AVR. 7. Start the engine and check the function of the generator. Does the generator now function properly? The excitation system has now been checked. Continue with Section 8.10 Checking the Stator Windings at the Lugs. wc_tx000958gb.fm 77 V- COM A WARNING Electric shock hazard. High voltage exists between the green and black wires when the engine is running. Electric shock can cause injury or death Do not touch the green and black wires when the engine is running. Yes ____ No ____ Your reading The excitation system is functioning properly. Continue. Check the exciter rotor winding. See Checking the Exciter Rotor Winding. Yes ____ No ____ The generator is OK. The AVR has failed; replace it.
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Mobile Generator Repair Foreword Th
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G 70 Table of Contents 1 Safety Inf
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G 70 Table of Contents 8.13 Checkin
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G 70 Safety Information 1 Safety In
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G 70 Safety Information 1.1.17 ALWA
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G 70 Safety Information 1.2.11 ALWA
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G 70 Safety Information 1.4 Towing
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Mobile Generator Theory of Operatio
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Mobile Generator Electrical Testing
Page 25 and 26: Mobile Generator Repair ECM Backgro
Page 39 and 40: G 70 ECM/Sensor Troubleshooting 5.1
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Page 45 and 46: G 70 ECM/Sensor Troubleshooting Con
Page 53 and 54: Mobile Generator Repair John Deere
Page 55 and 56: G 70 Troubleshooting Engine Start S
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Page 85 and 86: G 70 Disassembly and Assembly Conti
Page 87 and 88: G 70 Disassembly and Assembly 9.6 I
Page 93 and 94: G 70 Disassembly and Assembly 9.9 R
Page 99 and 100: G 70 Schematics 10.2 Engine Wiring
Page 101 and 102: G 70 Schematics 10.4 Generator Wiri
Page 103 and 104: G 70 Technical Data 11.2 Generator
Page 105 and 106: G 70 Technical Data 11.4 Dimensions
Page 107 and 108: Threadlockers and Sealants Threadlo
Page 109 and 110: Torque Values Torque Values (contin
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Repair Manual Mobile Generator - Wacker Neuson

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