Repair Manual Mobile Generator - Wacker Neuson
Repair Manual Mobile Generator - Wacker Neuson
Repair Manual Mobile Generator - Wacker Neuson
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G 70 Troubleshooting Engine Start System<br />
7.6 Checking the Intake Air Heater Relay<br />
Prerequisites Battery voltage measuring 11–13 VDC<br />
Procedure Follow the procedure below to check the intake air heater relay.<br />
1. Locate the intake air heater relay.<br />
2. Measure the voltage between terminal 30 (red wire #11) of the intake air heater<br />
relay and ground.<br />
Is at least 9.8 VDC measured?<br />
Yes____ No____ Your reading<br />
Continue. <strong>Repair</strong> or replace red wire #11.<br />
3. Place the START/RUN switch in the ON position.<br />
4. Measure the voltage between terminal 86 (grey wire #65) and ground during the<br />
preheat cycle. Note: This cycle only lasts a few seconds.<br />
Is at least 9.8 VDC measured?<br />
Yes____ No____ Your reading<br />
Continue. <strong>Repair</strong> or replace grey wire #65.<br />
5. Check the connection to ground of black wire #13 at terminal 85.<br />
Is there a path to ground?<br />
Yes____ No____ Your reading<br />
Continue. <strong>Repair</strong> or replace wire #13.<br />
6. Place the START/RUN switch in the ON position.<br />
7. Measure the voltage between terminal 87 (red wire #12) and ground.<br />
Is at least 9.8 VDC measured?<br />
The intake air heater relay has now been checked.<br />
wc_tx000957gb.fm 63<br />
Yes____ No____ Your reading<br />
The intake air heater relay is<br />
OK.<br />
The intake air heater relay<br />
has failed; replace it.
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