Carcruiser
New Member
I have a Onan 4BGEFA26101F 4KW Emerald I generator in my 1988 Winnebago Chieftain that stops running as soon as you let go of the start button. I have tried a new control board, but it did not help. I talked to a few people and was told that it could be the voltage regulator. I put a new Flight Systems one and it still won't run. I checked the A.C. voltage at the circuit breaker while holding the start button in and it was around 40VAC. I then cleaned the rotor slip rings and put in a new set of brushes. Still won't stay running. I saw a test that involved removing the voltage regulator and taking a 9V battery and connecting it to the wires of the brushes. The generator will run after I let go of the start button. But the output was around 40VAC. I found in the manual that when the DC voltage to the brushes goes up, the AC output voltage goes up. But even after connecting six 9V batteries in series for a total of 54 VDC, it only went up to 62 VAC. Next I got a set of wiring diagrams and a manual and I checked the rotor with a meter and got 21.9 ohms. The manual said it should be 21.8 ohms so I figured it is good. Next I pulled out the stator and got the following readings:
T1-T2 was .9 ohms, the manual said it should be .330 ohms +/- 10%
T3-T4 was .9 ohms, the manual said it should be .330 ohms +/- 10%
Q1-Q2 was 1.2 ohms, the manual said it should be 3.47 ohms +/- 10%
Does anybody know if this indicates a bad stator? And if it is bad, does anybody have any suggestions on where to get on at a reasonable price? Going by the manual, it says it is part number 220-4135-04.
Thanks in advance for the help!
Greg
T1-T2 was .9 ohms, the manual said it should be .330 ohms +/- 10%
T3-T4 was .9 ohms, the manual said it should be .330 ohms +/- 10%
Q1-Q2 was 1.2 ohms, the manual said it should be 3.47 ohms +/- 10%
Does anybody know if this indicates a bad stator? And if it is bad, does anybody have any suggestions on where to get on at a reasonable price? Going by the manual, it says it is part number 220-4135-04.
Thanks in advance for the help!
Greg