Repair Manual Mobile Generator - Wacker Neuson

G 70 Output Voltage Troubleshooting
Continued from the previous page.
5. Measure the voltage between the two yellow wires and ground.
Is at least 9.8 VDC measured?
Yes ____ No ____
The main circuit Check condition/connection of yellow wire between the main
breaker has failed; circuit breaker and the terminal strip. There must be more than
replace it. 9.8 VDC between the wire and ground. When voltage exists,
repeat step 4.
6. Place the key into the lug door switch.
7. With the main circuit breaker in the ON position, check for continuity (continuity
equals 0.0–1.0 Ohms) between L1 of the main circuit breaker and Lug 1. Also
check between L2 and Lug 2, and L3 and Lug 3.
Is there continuity for each check?
Yes ____ No ____ Your reading
Continue. The main circuit breaker has
failed; replace it. ____; _____; _____
8. With the main circuit breaker in the OFF position, check for continuity between
L1 of the main circuit breaker and Lug 1. Also check between L2 and Lug 2, and
L3 and Lug 3.
Is there continuity for any of the checks?
9. Reconnect the yellow (Y) wires and lug door key.
The main circuit breaker has now been checked. Continue with Section 8.5
Checking the Voltage Adjusting Rheostat.
wc_tx000958gb.fm 71
Yes ____ No ____
The main circuit breaker has failed;
replace it.
The main circuit breaker is functioning
properly.